Apogee Electronics
Product Service Manual - May 2013
CONFIDENTIAL
1
Table of Contents
Overview!.........................................................................................................3
Duet 2!..............................................................................................................5
Common Software Issues!
Updating Firmware !
Disassembling Duet 2!
Common Hardware Issues!
5
6
7
10
Symphony I/O!...............................................................................................19
Common Software Issues!
Updating Firmware !
Common Hardware Issues!
19
20
23
AD16X Technical Documents!......................................................................36
DA16X Technical Documents!......................................................................48
Rosetta 800 Technical Documents!.............................................................59
Big Ben Technical Documents!....................................................................65
2
Apogee Service Manual - Overview
Overview
CONFIDENTIAL!
The information presented in this Service Manual is strictly confidential and shall be under no circumstances shared with
or distributed to any third party. More specific restrictions are detailed in the Non-Disclosure Agreement that all Apogee
distributors and service centers have signed; note that the Non-Disclosure Agreement holds signatories responsible for
their personnel, both hired and contracted.
Introduction
This Service Manual provides detailed software and hardware troubleshooting instructions for current and legacy Apogee
products, as well as test procedures to verify the proper operation of the repaired product.
Apogee Service Center Requirements
The following requirements must be fulfilled by factory authorized Apogee Service Centers.
Required Practices
English Language Proficiency - The documentation, tools and support resources provided by Apogee are only
guaranteed in English. Thus, it is essential that service personnel working with Apogee are proficient in written and verbal
English.
Apogee RMA and QuickCare Procedures - All activities performed by the service center shall be in accordance with
Apogee procedures. They include the following:
• Apogee has created the QuickCare program to assist distributors with technical issues. Rather than provide a
single point of contact, the QuickCare group consists of some of the most knowledgeable people at Apogee.
• Communication with the QuickCare team must be conducted through Apogee’s Support portal found here:
http://www.apogeedigital.com/contact-support.php. Distributors will be sent a user name and password that
allows them to create a support ticket without registering a product, and ensures that their ticket is directed to
the QuickCare team.
ESD - All work areas must include protective measures against electrostatic discharge that can damage sensitive
electronics components such as those found in all Apogee products.
SMD (Surface Mount Technology) - Apogee Service Centers must be highly skilled at removing and replacing fine-pitch
surface mount components so that repairs are essentially undetectable, i.e. with no damage or residue to surrounding
parts or the circuit board.
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Apogee Service Manual - Overview
Required Equipment
Basic Tools for the disassembly and repair of all Apogee products - Phillips, Slot screwdrivers, needle nose pliers,SAE
and metric nut drivers.
Electronic Test Equipment - multimeter to measure AC and DC voltages, measure resistance and detect shorted and
open circuits; oscilloscope strongly suggested, at least 100mHz. (Preferred) - Audio Precision system, or equivalent, to
verify analog and digital circuit performance.
Soldering - temperature-controlled 50watt soldering iron; SMT (surface mount technology) soldering tools, including
heat guns, tweezers, solder flux, magnifying equipment and circuit board cleaning supplies.
Apple Macintosh Computers - One Apple Mac computer equipped with Firewire, USB 2 and Thunderbolt ports. Mac
Pro for testing PCIe cards. (Preferred) - Avid Pro Tools HD system.
Apple iOS Device - iPad 2 or greater
Audio Cabling - XLRM-XLRF, XLRM-TRS, XLRF-TRS, TS-TS, 1/8” stereo-TS, DB25-XLRM, DB25-XLRF
Apogee Specific Cables - Breakout cables for ONE, Duet FW, Duet USB, MIC/Jam, Honda - 30-pin.
Audio software - Apple Logic Studio, Apple Garageband, Avid Pro Tools.
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4
Apogee Service Manual - Duet 2
Duet 2
Common Software Issues
Before Attempting Hardware Repairs!
Before attempting hardware repairs described in this Service Manual, it is crucial that Duet 2 firmware is updated to the
latest version found here:
http://www.apogeedigital.com/company/support.php
Issues resolved by updated firmware include:
•
•
•
Duet not recognized by the Mac or iPad - a purple “A” is constantly displayed on the OLED. In some cases Duet
isn’t recognized because of older firmware, but the firmware can’t be updated until Duet is recognized. By
following the firmware update procedure below with some persistence, it is possible to get the unit recognized
and updated.
Duet recognized by the Mac but not in Apogee Maestro 2 software
The encoder appears to operate (i.e. changes in output level are displayed on the OLED) but the actual output
level doesn’t change.
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Apogee Service Manual - Duet 2
Updating Firmware
To update Duet 2 firmware, follow these instructions in the precise order shown:
1. Trash any previous Duet installer packages and/or firmware updaters from your computer, whether they are on
the desktop or in a downloads folder, then empty the trash.
2. Download the latest Duet installer package from our website - as of May 2013, the latest version may be found
here:
http://www.apogeedigital.com/drivers/DUET2/Duet_April_2013.dmg
3. Open the Duet installer package and run the 'Duet USB Uninstaller'. Restart the computer.
4. Plug Duet directly into the Mac via USB (be sure to use the supplied Apogee USB cable plugged directly into a
Mac USB port - do not connect via a USB hub.
5. Open up System Information by choosing Apple > About This Mac, then click More Info.
6. In the About This Mac window, click System Report...
7. In the System Report window, click USB. Duet should be listed in the USB Device Tree.
8. If Duet is not listed in the USB Device Tree, follow these steps until Duet is recognized:
1. Unplug then re-plug Duet’s USB connection, typing Command-R to refresh the USB Device Tree display.
Repeat several times.
2. If Duet isn’t recognized, try a different USB port on the Mac.
3. If Duet still isn’t recognized, be sure to try a different USB 2.0 cable.
4. Once Duet is recognized, proceed to the next step.
9. Launch the 'Duet USB Firmware Updater' and update the firmware. If the update fails, quit the updater, go back
to the previous step and then once the Duet is recognized, launch the firmware updater again and try the update.
10. After the firmware has successfully updated, launch the 'Duet Software installer' and run it. Restart the computer
when it's complete.
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Apogee Service Manual - Duet 2
Disassembling Duet 2
1. Add a thick rubber band (wrapped twice) around the knob.
1. Put towel over the unit to protect the unit
and pull the knob off using a crescent
wrench.
1. Remove Nut/Washer on the encoder.
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Apogee Service Manual - Duet 2
1. Carefully lift the rubber backing at the
indicated locations with a flat wood stick
to reveal the 4 rear panel screws.
Remove the 4 screws
5. Remove the back panel, then partially lift the Main PCBA
to reveal the ribbon cable connecting the OLED riser
board to Main PCBA
6. To disconnect the ribbon cable, locate connector J6
(indicated in the photo), lift the connector’s “collar”, then
gently remove the ribbon cable.
5. Remove the 6 screws indicated in the photo, then lift out
the metal support bracket.
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Apogee Service Manual - Duet 2
5. Locate J1 on the OLED riser board. Gently lift up on the
connector’s black lever to unlock the connecter.
5. Pull the OLED’s ribbon cable out of J1. Install a new
OLED and insert the new OLED’s ribbon cable in J1.
Once inserted, gently press down on the black lever to
re-lock the connector.
5. Do not bend the OLED ribbon cable - don’t tuck the
ribbon cable under the riser board.
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Apogee Service Manual - Duet 2
Common Hardware Issues
Common Faults List
Fault Code
Description
DUSB001
Unit restarts continuously when plugged into host
DUSB002
Unit does not power on when connected to host
DUSB003
OLED display does not work
DUSB004
OLED Display shows a visible defect
DUSB005
Unit shuts down or restarts when knob is touched
DUSB006
Unit powers on but is not recognized
Required Parts
Fault Code Qty
Apogee Part
Number
Description
DUSB001
1
1260-0025-0000
IC, TLC7703, Voltage Supervisor, TSSOP-8
DUSB002
1
1260-0024-0000
IC, TPS2113A, Power Mux, TSSOP-8
DUSB002
1
1260-0023-0000
IC, TPS2115A, Power Mux, TSSOP-8
DUSB002
1
1040-0000-0000
TVS Diode, 6V, 600W, DO-214AA (SMB)
DUSB003
1
0391-2038-0000
Internal FFC Cable (Main to Riser)
DUSB003
1
0900-0273-3406
Ceramic Capacitor, 10uF, 25V, 20% X5R 0805
DUSB003/
DUSB004
DUSB005
1
1445-0005-0000
OLED Display Module
1
2607-0008-0000
Encoder Knob with Built-in Kapton Tape
DUSB006
1
1190-0057-0252
IC, USB PHY, QFN-24
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Apogee Service Manual - Duet 2
Fault code DUSB001: Unit restarts continuously when plugged into host
How to identify defect:
At top assembly level: OLED display flickers purple A constantly when plugged in.
How to fix defect:
Open unit (see Disassembling Duet 2) and replace U7 on Main PCBA with (APN 1260-0025-0000) as depicted below:
How to test fix:
Ensure that unit is recognized in Maestro/AMS when connected to Mac host and OLED maintains a steady image with
no flickering.
Total repair time: 45 mins
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Apogee Service Manual - Duet 2
Fault code DUSB002: Unit does not power on when connected to host
How to identify defect:
At top assembly level:
Unit is not recognized in Maestro/AMS when plugged into Mac host and OLED does not turn on
At Main board level:
Any or all of the following components will be visibly damaged: Q1, Q18, D37
How to fix defect:
Open unit (see Disassembling Duet 2) and replace the following parts on Main PCBA:
Q1 (APN 1260-0024-0000)
Q18 (APN 1260-0023-0000)
D37 (APN 1040-0000-0000)
How to test fix:
Ensure that unit is recognized in Maestro/AMS when connected to Mac host and OLED maintains a steady image (no
flickering).
Total repair time: 1 hour
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Apogee Service Manual - Duet 2
Fault code DUSB003: OLED display does not work
Defect Symptom (What happens?)
Display does not work.
How to identify defect:
Unit is recognized in Maestro/AMS when plugged into Mac host, but OLED does not turn on.
How to fix defect:
Open unit (see Disassembling Duet 2) and try each of the following steps in this order to diagnose failure. After each
step, connect unit to Mac host to verify if the OLED begins working:
1. Ribbon cable connecting Main board to Riser is present and undamaged (APN 0391-2038-0000).
2. Ribbon cable is seated correctly on both ends (J6 on Main board and J6 on Riser board) with correct polarity as
shown below:
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Apogee Service Manual - Duet 2
3. OLED connection is oriented correctly and latch on J1 is closed.
4. Using DMM, check for short across C1 on Riser PCBA. Replace with (APN 0900-0273-3406) if failed.
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Apogee Service Manual - Duet 2
5. Replace OLED module with (APN 1445-0005-0000) (refer to Appendix A). Make sure to remove protective film by
pulling green tab as shown below.
How to test fix:
After unit is reassembled, ensure that unit is recognized in Maestro/AMS when connected to Mac host and OLED
maintains a steady image with no flickering.
Total repair time: 1 hr
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Apogee Service Manual - Duet 2
Fault code DUSB004: OLED Display shows a visible defect
How to identify defect:
Visual inspection of OLED when unit is plugged in. Defects can range from line of persistent or dead pixels or an
otherwise corrupt image. Here is an example of a persistent blue line:
How to fix defect:
Open unit (see Disassembling Duet 2) and replace OLED module connected to Riser PCBA with (APN 1445-0005-0000).
Make sure to remove protective film by pulling green tab as shown below.
Refer to included assembly instructions or “how to fix” section of Fault code DUSB003 to see proper installation
instructions.
How to test fix:
After unit is reassembled, ensure that unit is recognized in Maestro/AMS when connected to Mac host and OLED
maintains a steady image with no flickering.
Total repair time: 45 mins
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Apogee Service Manual - Duet 2
Fault code DUSB005: Unit shuts down or restarts when knob is touched
How to identify defect:
2 ways to identify:
#1: Applying ESD (using a tester if available) to knob reproduces issue
#2: Inspect knob. Any knob missing kapton tape (as shown below) needs to be replaced:
How to fix defect:
Replace old knob with new knob (APN 2607-0008-0000) (Disassembling Duet 2) which can be identified by Kapton tape
inside hole.
How to test fix:
If ESD tester is available, apply ESD to knob while unit is connected to Mac host and ensure that operation is not
interrupted.
Total repair time: 20 mins
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Apogee Service Manual - Duet 2
Fault code DUSB006: Unit powers on but is not recognized.
How to identify defect:
OLED turns on but unit does not appear in Maestro/AMS.
How to fix defect:
Open unit (see Disassembling Duet 2) and replace U66 (APN 1190-0057-0252)
How to test fix:
Ensure that unit is recognized in Maestro/AMS when connected to Mac host and OLED maintains a steady image with
no flickering.
Total repair time: 1 hour
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Apogee Service Manual - Symphony I/O
Symphony I/O
Common Software Issues
Before Attempting Hardware Repairs!
Before attempting hardware repairs described in this Service Manual, please be sure to update firmware and software to
the latest release found here:
http://www.apogeedigital.com/company/support.php#SYMIO
Only the very latest firmware and software provide the Symphony system’s complete feature set.
Issues resolved by updated firmware include:
• Audio artifacts while in USB Audio mode;
• Stability issues when using an Avid HD Native card.
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Apogee Service Manual - Symphony I/O
Updating Firmware
Overview
This document explains in detail the procedure for updating Symphony I/O firmware. Troubleshooting tips are also
provided.
PLEASE NOTE
•
•
The Symphony I/O Firmware Updater is not compatible with early versions of OS X Mountain Lion. If your Mac is
running the Mountain Lion OS, please update to version 10.8.3.
The Symphony I/O Firmware Updater is not compatible with USB3 ports found on the most recent Macs.
Workaround - Connect a USB 2 hub to your Mac, then connect Symphony I/O to the USB 2 hub. Note that the
USB ports in the Apple Keyboard and Displays are USB 2.
Before you update
•
•
•
Complete retention of all Symphony I/O’s software parameters can’t be guaranteed across a firmware update,
thus it’s recommended to note critical Maestro settings such as Trim levels before performing an update.
Unplug headphones and mute speaker volume before updating firmware.
RECOMMENDED - unplug all other USB devices and hubs.
To update
1. Connect Symphony I/O’s USB port to an Intel Mac’s USB port, using the USB cable included with Symphony I/O.
If updating from Release 3 or later, it’s possible to connect multiple Symphony IOs to your Mac.
2. Double-click the Symphony I/O Firmware Updater icon to launch the updater application. The following window
should be displayed. If you’re updating multiple Symphony I/Os, select the first unit.
3. Click “Update”.
4. Once the update is complete, the message “Would you like to continue updating other unit(s)? is displayed. Click
“Continue” to choose another Symphony I/O or “Quit” to quit the Firmware Updater application.
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Apogee Service Manual - Symphony I/O
•
•
If the Firmware Updater displays the message “Could not find a Symphony I/O connected”, please see the related
entry in the Troubleshooting section of this document.
If the message “Failed to Update” is displayed, simply click “Yes, try again”. If the update fails after 3 attempts,
see the related entry in the Troubleshooting section of this document.
After updating
After updating, it’s suggested to verify the following settings;
• Audio Interface Mode - press and hold the righthand encoder to verify that Symphony I/O is set to the desired
audio interface mode.
• If using multiple Symphony I/Os in Symphony audio interface mode, verify that the Source setting (found in the
Maestro > System Setup tab) is set PCI Card 1, Ports 1-2 (Chs 1-64).
• Check that Output settings such as Speaker setting and level and headphone level and mute are set as
expected.
Troubleshooting
“Could not find a Symphony I/O connected”
1. Check that Symphony I/O is detected in the Mac System Profiler:
2. Under the Mac’s Apple menu, choose “About This Mac”. In the About This Mac window, click “More Info…” to
open the System Profiler application.
3. In the System Profiler window, click on the Hardware disclosure triangle to display the hardware list, then click on
“USB”.
4. In the USB Device Tree window, look for the entry “Symphony I/O: AIM (where AIM is the unit’s current audio
interface mode).
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Apogee Service Manual - Symphony I/O
5. If Symphony I/O is not detected in the USB Device Tree:
6. Be sure to use the USB cable included with Symphony I/O. Alternatively, use a cable that is USB 2.0 Certified.
7. Connect Symphony I/O to another USB port. If you’re using a Mac Pro’s rear USB ports, try the front ports.
8. Power cycle the Symphony I/O and the Mac.
9. After each step, choose View > Refresh in System Profiler to rescan the USB bus.
Firmware Updater doesn’t successfully complete
If the Firmware Updater displays the message “Failed to Update”:
1. Click “Yes, Try Again” to run the Firmware Updater again.
2. Be sure to use the USB cable included with Symphony I/O. Alternatively, use a cable that is USB 2.0 Certified.
3. Quit and re-start the Firmware Updater application to verify if firmware wasn’t actually updated. If the message “All
Firmware Up to Date” appears in the lower lefthand corner of the Firmware Updater window, then the update has
occurred successfully.
4. If possible, try updating using another Macintosh computer.
After updating, no front panel indications
If there are no front panel indications after performing the firmware update, the update didn’t successfully complete - see
Firmware Updater doesn’t successfully complete above.
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Apogee Service Manual - Symphony I/O
Common Hardware Issues
Fault Code
Description
SIO001
Symphony I/O doesn’t power on
SIO002
No characters (or corrupted characters) on OLED
SIO003
64-pin Ribbon Cable cause glitches
Fault Code Qty
Apogee Part Number
Description
SIO001
Power Supply
0200-0001-0000
SIO002
64 pin ribbon cable
0491-0032-0008
SIO003
Front panel OLED
1445-0002-0000
Fan Modification Kit
0101-0001-0000
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Apogee Service Manual - Symphony I/O
Fault Code SIO001: Symphony I/O doesn’t power on
Overview
This section shows you how to resolve issues when Symphony I/O doesn’t appear to power on.
Reported Symptoms
Symptoms reported include:
• When the AC cable is connected to Symphony I/O, the front panel “A” logo doesn’t light up; pressing the power
switch doesn’t power on the unit.
• When the AC cable is connected, the front panel “A” logo does come on, but pressing the power switch doesn’t
power on the unit. Also, the front panel OLED may be blank or display Firmware Update Mode.
Resolving Power On Issues
Power on issues can usually be resolved by checking for these four conditions:
• Unfinished firmware update
• Improperly seated cables
• Faulty power supply
• Shorted circuit board
Use the Front Panel “A” to Troubleshoot
When the Symphony I/O is working properly, the front panel “A” logo will light as soon as AC is connected to the rear
panel AC inlet - it’s not necessary to power on the unit. If AC is connected and the “A” logo doesn’t light, this provides
important clues for troubleshooting, described below.
Unfinished Firmware Update
If, during a firmware update, Symphony I/O loses power or the USB connection is interrupted, the unit will power on
directly in firmware update mode. In this case, the “A” logo lights and Firmware Update Mode may be displayed on the
front panel OLED, or the OLED may be blank.
This issue may be simply resolved by connecting Symphony I/O to the Mac and using the firmware updater to re-load
the firmware. Please see the previous section entitled Updating Firmware.
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Apogee Service Manual - Symphony I/O
Improperly Seated Cables
If, after connecting AC, the “A” logo doesn’t light, its possible that internal cables have become unseated. To resolve this
issue, disconnect the AC cable if connected, remove the top cover and verify that the cables shown below are firmly
seated in their mating connector.
1. AC back panel inlet to power supply
2. 2 cables from power supply to Main board
3. Main board to front panel display board
While checking the internal cables, check the 64-pin ribbon cable between the Main board and the I/O Module(s) as
described in the section “Fault Code SIO003: 64-pin Ribbon cables cause glitches”.
Once cables are re-seated, re-connect the AC cable and verify that the front panel “A” logo lights up. If it doesn’t,
proceed to the next step.
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Apogee Service Manual - Symphony I/O
Faulty Power Supply
If, after re-seating cables, the “A” logo still doesn’t light, then either the power supply is faulty or another circuit board is
shorted, causing the power supply’s output to be pulled down. The quickest way to determine the faulty part requires a
simple voltmeter:
1. Set the voltmeter to read DC volts; select a range that includes +24 volts.
2. Disconnect the AC cable, then disconnect the 8-pin connector between the power supply and the Main board
shown below.
3. Re-connect the AC cable and CAREFULLY measure for +24 volts DC between any red cable and any black cable
on the power supply side of the 8-pin cable.
4. If 24 volts isn’t present, then the power supply is faulty and must be replaced.
5. If 24 volts is present, then proceed to the next step.
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Apogee Service Manual - Symphony I/O
Shorted Circuit Boards
If the power supply measures +24 volts while disconnected, it is most likely operating properly. Now, test the power
supply when loaded by all internal circuit boards.
1. Disconnect the AC cable, re-connect the 8-pin cable to the Main board and re-connect the AC cable.
2. Check the “A” logo. If it doesn’t come on with the circuit boards connected, then one of the circuit boards has
shorted.Follow these steps to determine which circuit board has shorted:
3. Disconnect the AC cable, disconnect the 64-pin ribbon cable(s) between the IO Module(s) and the Main board
(shown below), re-connect the AC cable.
4. Check the “A” logo. If it lights when the IO Module is disconnected, then the IO Module is shorted and must be
replaced. If 2 IO Modules are installed, connect each one at a time to determine the faulty module.
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Apogee Service Manual - Symphony I/O
5. If after disconnecting the IO Modules the “A” logo still doesn’t light, disconnect the AC, disconnect the cable
between the front panel and the Main board (shown below), and re-connect the AC.
6. Since you’ve just disconnected the front panel, the “A” logo can’t light. In order to confirm if the power supply is
functioning, measure for 24 v DC at the red & black wires again.
7. If the power supply doesn’t measure 24 volts DC, then the Main board is faulty and should be replaced. Here’s the
logic we followed to arrive at this conclusion:
The power supply worked when disconnected.
The power supply didn’t work when all the circuit boards were connected
The power supply still didn’t work when the IO modules and the front panel were disconnected but the Main
board was connected.
Conclusion - the Main board is shorted, thus shorting out the power supply’s +24 volt output.
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Apogee Service Manual - Symphony I/O
Replacing the Main PCBA or Power Supply
Overview
This section shows you how to replace Symphony I/O’s Main board or power supply after you’ve determined that they’re
faulty.
Remove/Replace the Power Supply
Even if you’re replacing the Main board, you should remove the power supply in order to more easily maneuver the Main
board.
1. Disconnect the following cables (indicated in yellow in figure 1) from the power supply:
The cable between the rear panel AC inlet and the power supply
The yellow and black cable to the Main board
The red and black cable to the Main board.
2. Disconnect the Main to Display cable at both ends and remove - it makes removal of the power supply much
easier.
3. Unscrew the four screws at each corner of the power supply (indicated in red in figure 1) and set them aside.
4. Gently lift the power supply out of the Symphony I/O chassis.
Figure 1
If you’re replacing the power supply, continue with these steps; if you’re replacing the Main board, skip to Replacing the
Main board on the next page.
5. Drop in the replacement power supply so that its four mounting hole line up with the four PEM nuts in the
Symphony IO chassis bottom.
6. Re-install the four roundhead screws.
7. Re-connect the AC inlet cable, the 2 Main board cables, the Main to headphone cable and the Main to Display
cable.
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Apogee Service Manual - Symphony I/O
Replacing the Main board
Before Starting
Note that the Main board and the rear panel fan insert are connected as one unit. We suggest that you remove the Main
board and rear panel insert together, then connect the new Main board to the original rear panel insert.
1. Remove the power supply as described above.
2. Disconnect 64-pin ribbon cables to the IO Module(s). Disconnect the headphone cable. Cables are indicated in
yellow in Figure 2.
3. Unscrew the 8 roundhead screws indicated in red in Figure 2.
Figure 2
!
4. Unscrew the 7 flathead screws on the rear panel indicated in red in Figure 3.
Figure 3
!
!
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Apogee Service Manual - Symphony I/O
5. Looking at the rear of the unit, lift the Main board up just a millimeter or two, tilt the front edge of the Main board
up and lift the board and rear panel insert up and out (see Figure 4). Maneuver the board carefully, taking
precautions not to scrap the bottom of the board against the chassis PEMs (screw receptacles).
Figure 4
!
!
!
6. To separate the rear panel insert from the Main board, disconnect the fan power connector from the Main board.
7. Unscrew the 4 screws fastening the 2 PC-32 connectors to the rear panel insert.
8. Pull the rear panel insert straight off the old Main board.
9.
10.
11.
12.
13.
14.
Place the rear panel insert on the new Main board
Re-install the 4 PC-32 screws
Re-connect the fan power connector.
Slide the new Main board and rear panel insert assembly into the Symphony I/O chassis, Re-install all screws.
Re-install the power supply.
Re-connect the AC inlet cable, PSU to Main cables and 64-pin ribbon cables between the Main board and I/O
Modules.
15. Connect Symphony I/O’s USB port to a Mac and use the Symphony I/O Firmware Updater to verify firmware.
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31
Apogee Service Manual - Symphony I/O
Fault Code SIO002: No characters (or corrupted characters) on OLED
Overview
This section shows you how to resolve issues that may occur with the front panel OLED
Reported Symptoms
• No display of characters between the two front panel encoders, though all other front panel functions operate as
expected.
Checking the OLED ribbon cable
1.
2.
3.
4.
Unplug Symphony I/O’s AC input and remove the top cover
Remove the I/O Module(s)
Locate the OLED ribbon cable inside the unit, behind the front panel, in the center.
Check that the ribbon cable is fully inserted. If it isn’t, gently swivel UP the black retainer bar (indicated below) to
loosen the clamp, fully insert the ribbon cable, then push the black retainer bar back down.
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32
Apogee Service Manual - Symphony I/O
Replacing the OLED
If re-inserting the OLED ribbon cable doesn’t resolve the issue, then the OLED should be replaced.
1. Detach the OLED ribbon cable as described above.
2. On the Symphony I/O underside, loosen the two screws of the OLED removable sled.
3. Pull the sled out, carefully guiding the ribbon cable through the front panel.
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33
Apogee Service Manual - Symphony I/O
4. Place the new OLED in the sled and guide the ribbon cable back through the front panel.
5. Insert the ribbon cable into the connector and gently push down on the black retainer bar to secure the ribbon
cable (as shown above.
6. Re-connect the AC and verify that OLED characters are now displayed correctly.
7. Re-install I/O Modules and the top cover.
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Apogee Service Manual - Symphony I/O
Fault Code SIO003: 64-pin Ribbon Cable cause glitches
Overview
This section shows you how to resolve issues that may occur due to an improperly installed or faulty internal 64-pin IO
Module ribbon cable.
Reported Symptoms
When an I/O Module ribbon cable has become defective, users report one or more of the following symptoms:
• Random “spikes” observed on the front panel meters or on Maestro Input meters.
• Clicks, pops or distortion present in the audio signal even when the audio software buffer is set high.
• The audio signal becomes distorted over time.
Testing the IO Module Ribbon Cable
To test the IO Module ribbon cable, follow these steps. DO NOT PERFORM THIS TEST with A 16 x 16 Analog Input/
Analog Output module, damage to the I/O Module may result.
1. Unplug the AC cable and remove Symphony I/Oʼs top panel.
2. Re-seat both ends of the 64-pin ribbon cable (location shown below).
3. Re-connect the AC cable, then connect Symphony I/Oʼs USB port to a Mac. Power the unit on.
4. Press and hold the right encoder to set Symphony I/O to USB audio interface mode. Open
Maestro,click on the Input tab and adjust the window to see all meters.
5. Lightly manipulate the 64-pin ribbon cable that connects the I/O Module to the Main board, looking for spurious
meter spikes on the front panel and in Maestro. If two I/O Modules are installed, test each cable.
6. If any spurious signals are observed, replace the ribbon cable with an Apogee-approved cable.
7. Please see the Apogee Tech Bulletin video entitled “Symphony I/O Ribbon Cable
Troubleshooting” for an example of a faulty ribbon cable.
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35
Apogee Service Manual - AD16X
AD16X Technical Documents
Tech Notes + QuickTest
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36
ApogeeTechNotes:
AD/DA16X Troubleshooting v 1.0
When troubleshooting the AD and DA16X, the first step should always be to verify the firmware of the
unit by powering off the unit, pressing and holding the PREV button and powering on the unit.
The latest version of firmware for the AD16X is 2.01
The latest version of firmware for the DA16X is 2.05
AD/DA16X firmware (and complete update instructions) are available at our website here:
http://www.apogeedigital.com/downloads/
Symptom -­ When I power up the AD/DA16X, I get “00.00” on the display.
Solution -­ There are several causes for such a symptom:
1) If no signal is connected to the selected clock source, the sample rate will indicate 00.00. Connect
a valid clock signal to the selected clock source.
2) If a faulty or unprogrammed X-­Option card is installed in the AD/DA16X Option slot, the AD/DA16X
won’t boot up correctly and will indicate 00.00. Verify by removing installed X-­Option cards. (If the AD/DA16X boots up correctly after removing an X-­HD card, the X-­HD card may need to be re-­programmed. Please see the TechNote entitled “X-­HD troubleshooting”.
3) If a MIDI update of the AD/DA16X has been attempted (or “Midi Update Mode entered accidentally) and “00.00” is displayed, the update has failed. It’s necessary to obtain another Mega8 EPROM chip from Apogee Support and re-­load the AD or DA16X firmware via MIDI.
Use the EPROM labelled EC7 in the AD16X
Use the EPROM labelled F7A in the DA16X
4) If the “00.00” display is encountered upon power up and none of the above cases applies, the Mega8 EPROM has failed. Again, it’s necessary to obtain another Mega8 EPROM chip from Apogee Support and re-­load the AD or DA16X firmware via MIDI.
Use the EPROM labelled EC7 in the AD16X
Use the EPROM labelled F7A in the DA16X
Under certain circumstances it’s possible to install an EPROM directly without the necessity of re-­
programming via MIDI. These circumstances are : a) The AD16X was previously programmed with
version 2.01 firmware, the DA16X was previously programmed with version 2.05 firmware; b) the
failure was not caused by a faulty X-­Option card or failed MIDI update attempt. If there is any doubt, better to install the EPROMs noted in step 3 and re-­program the unit via MIDI.
If the failed units were previously programmed with 2.01 (AD16X or 2.05 (DA16X):
Use the EPROM labelled E33 in the AD16X
Use the EPROM labelled 932 in the DA16X
Though earlier units may have been upgraded in the field, all AD16Xs beginning with s/n ADX0659
were programmed from the factory with v. 2.01. All DA16Xs beginning with s/n DAX0461 were programmed with v. 2.05 from the factory.
Please note that these EPROMs are re-­programmable; return of old EPROMs to Apogee is appreciated.
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ApogeeTechNotes:
AD/DA16X Troubleshooting v 1.0
Symptom -­ AD16X -­ I’m getting distortion or excessive noise on some or all AD16X channels; the symptom can occur when SOFT LIMIT is engaged.
Solution -­ Due to manufacturing tolerances on earlier production runs, instabilities have been observed on some AD16Xs which cause distortion on the analog inputs. This is resolved by replacing the 1.65k resis-­
tor at locations 105 to 1605 with a 2k resistor.The location of R 1605 is indicated below; to locate the other 15 resistors, identify the repeating pattern of component layout (which repeats for each of 16 channels) and locate the corresponding resistor placement. As with any surface mount component, care must be taken to ensure that the resistor is properly soldered on both sides and not damaged upon installation. We recommend inspecting the installed resistors under a microscope. This modification has been completed at the factory on AD16X s/n ADX0659 and above.
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ApogeeTechNotes:
AD/DA16X Troubleshooting v 1.0
Symptom -­ AD/DA16X -­ I’m getting erratic behavoir on the front panel, or some buttons don’t work correctly.
Solution -­ Due to a manufacturing process which has been since corrected, excess humidity under certain capacitors can cause shorts under the cap. To resolve the issue, it’s necessary to remove the capaci-­
tors indicated below and clean the solder pads with 90% isopropyl alcohol. Once the circuit board is completely dry, re-­install the capacitors. Remove, clean and replace C18, C13, C16, C9, C6, C7,C8, C19, C17, C2, C5, C1, C3, C4, and C12.
Symptom -­ AD/DA16X -­ The unit powers up inconsistently, or not at all.
Solution -­ There are two issues that may cause this s0ymptom:
1) A faulty X-­Option card is installed in the Option slot. Remove an installed Option card and verify if the symptom is resolved.
2) If the symptom persists with no Option card installed, replace capacitor C14 (.1uf) with a .01 uf capacitor. The location of C14 is indicated below. This modification has been completed at the factory on AD16X s/n ADX0659 and above and DA16X s/n 594 and above.
Symptom -­ AD16X -­ I’m seeing inconsistent conversion levels across the 16 A/Ds
Solution -­ A few firmware updates have been released to address inconsistent levels under various operat-­
ing conditions. Please be sure to verify that the AD16X has been updated to the latest firmware version,available from our web site here: http://www.apogeedigital.com/downloads/.
Symptom -­ AD16X -­ The AES Outputs are not working correctly.
Solution -­ Status bits in version 1.37 firmware are not correctly transmitted; update to the latest firmware ver-­
sion.Also, note that AES breakout cables for the Digidesign 192 are not compatible with the AD16X’s AES Out.
Symptom -­ AD/DA16X -­ When locked to an external 96Khz clock, the display reads “96.01”.
Solution -­ An indication of 96.01 is a rounding error in the sample rate display that has been resolved in the most recent firmware version.
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ApogeeTechNotes:
AD/DA16X Troubleshooting v 1.0
Symptom -­ AD/DA16X -­ Either one channel or a pair of channels no longer works.
Solution -­ By testing different digital output formats (on the AD) or different digital input formats (on the DA), it’s possible to determine whether faults are occuring in the digital or analog stage of the converter. When it’s been determined that the failure is in the analog section, the following troubleshooting hints apply.
As with any analog circuitry, best to start with the power supply. The “+” and “-­” 15 volt lines of each channel are “decouped” from the rest of the unit using “fuse” resistors, which will open when a short in the analog circuitry causes an excess flow of current. These resistors prevent the failure of the entire unit if a short occurs in one channel.
As these resistors are connected in the “+” and “-­” 15 volt lines of each channel, voltage should be measured on both sides of the resistors. If voltage is present on one side only, the resistor has “blown”, and usually indicates a short in the corresponding channel.
Once a resistor has blown, the short must be found and removed, and the resistor replaced.The AD16X uses 10 ohm resistors, while the DA16X uses 1 ohm resistors. As a general guideline, if only one power rail has blown, it’s most likely that a tantalum capacitor has shorted. Look for discolored components, and lightly touch components, looking for components that are excessively hot. If both power rails have blown, it’s most likely that an IC has failed. Again, look for discolored or hot components. The location of fuse resistors is indicated below for the AD16X and DA16X. The portions of circuitry shown are taken from the front of analog circuitry “block” (as depicted on p. 2 of this document). AD16X DA16X
-­15 v
15 v
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ApogeeTechNotes:
AD-­16X
Analog
Inputs
Symptom
-­
One
of
the
AD-­16X’s
Analog
Inputs
is
not
functioning.
For
this
channel,
the
+15V
and
-­15V
‘Fuse
Resistors’
are
blown.
Resolution
-­
Most
likely,
the
defect
is
resultant
of
a
failed
MAX4648EUT-­T
switch.
In
this
event,
following
the
below
listed
steps
will
resolve
the
product
defect.
1).
Power
down
the
AD-­16X
and
disconnect
AC
power
from
the
unit’s
IEC
input.
2).
Verify
the
value
of
the
defective
channel’s
+15V
and
-­15V
Fuse
Resistors,
removing
any
part
which
mea-­
sures
greater
than
10
Ohms.
The
locations
of
the
AD-­16X’s
Fuse
Resistors
are
detailed
on
page
2
of
this
document.
3).
Locate
and
remove
the
MAX4648EUT-­T
switch
for
the
defective
channel.
The
locations
of
the
AD-­16X’s
MAX4648EUT-­T
switches
are
detailed
on
page
2
of
this
document.
4).
Gently
clean
the
now
vacant
solder
pads
with
solder
wick
and
90%
isopropyl
alcohol.
Once
dry,
install
a
replacement
MAX4648EUT-­T
switch
(Apogee
Part
Number
0633-­2111-­0000),
paying
careful
attention
to
device
polarity
relative
to
the
Main
PCB
silk
screen.
Also
install
replacement
Fuse
Resistors
(Apogee
Part
Number
0820-­1100-­4402)
as
needed.
For
reference
purposes,
AD-­16X
Fuse
Resistors
are
10
Ohm,
1/8W,
5%
tolerance,
0805
package
size.
5).
Reconnect
and
power
the
AD-­16X.
Validate
the
fix
via
48
hour
thermal
test
with
the
AD-­16X
analog
inputs
loaded
and
passing
signal.
Channel
16
Fuse
Resistors
Channel
16
MAX4648EUT-­T
Channel
15
MAX4648EUT-­T
Channel
15
Fuse
Resistors
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ApogeeTechNotes:
AD-­16X
Analog
Inputs
Channel
16
Fuse
Resistors
Channel
16
MAX4648EUT-­T
Channel
15
MAX4648EUT-­T
Channel
15
Fuse
Resistors
Channel
14
Fuse
Resistors
Channel
14
MAX4648EUT-­T
Channel
13
MAX4648EUT-­T
Channel
13
Fuse
Resistors
Channel
12
Fuse
Resistors
Channel
12
MAX4648EUT-­T
Channel
11
MAX4648EUT-­T
Channel
11
Fuse
Resistors
Channel
10
Fuse
Resistors
Channel
10
MAX4648EUT-­T
Channel
9
MAX4648EUT-­T
Channel
9
Fuse
Resistors
Channel
8
MAX4648EUT-­T
Channel
8
Fuse
Resistors
Channel
7
MAX4648EUT-­T
Channel
7
Fuse
Resistors
Channel
6
Fuse
Resistors
Channel
6
MAX4648EUT-­T
Channel
5
MAX4648EUT-­T
Channel
5
Fuse
Resistors
Channel
4
Fuse
Resistors
Channel
4
MAX4648EUT-­T
Channel
3
MAX4648EUT-­T
Channel
3
Fuse
Resistors
Channel
2
MAX4648EUT-­T
Channel
2
Fuse
Resistors
Channel
1
MAX4648EUT-­T
Channel
1
Fuse
Resistors
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ApogeeQuickTest
:
AD16X
Connect
the
AD16X
in
the
manner
shown
below;
to
conduct
this
test
a
known
good
DA16X
is
required.
A
clean
sound
and
monitoring
system
may
be
used
in
lieu
of
an
audio
test
set.
AD-­16X
Analog
Out
Audio
Test
Set
(or
Audio
Sound
Source
and
Monitoring
System)
DA-­16X
WC
I/O
Set
the
AD-­16X
under
test
to
INT
and
the
DA-­16X
to
WC
Analog
In
Audio
Test
Set
(or
Audio
Sound
Source
and
Monitoring
System)
Test
1
:
ALL
LEDs
With
the
unit
powered
down,
hold
down
the
“Up”,
“Down”,
“Prev”,
and
“Next”
buttons
while
power-­
ing
up
the
unit.
All
LEDs
should
light.
If
the
test
passes,
power
down
the
unit,
hold
down
the
“Down”
button,
and
power
up
the
unit
to
reset
it.
Test
2
:
A/D,
Optical
I/O
Set
the
units
as
shown
below.
Sequentially
connect
analog
input/outputs
1-­8
to
the
test
set
(or
audio
system)
and
verify
that
signal
passes
cleanly.
Once
channels
1-­8
are
good,
connect
analog
input/out-­
puts
9-­16
to
the
test
set
and
verify
that
signal
passes
cleanly
on
those
channels
as
well.
For
all
channels,
if
inputting
a
19.5
dBu
1kHz
sine
wave,
output
level
should
measure
approximately
19.5
dBu;
output
THD+N
should
measure
<
-­95
dB.
PASSED
PASSED
INT
96kHz
Soft
Limit
“Off”
/
AES
“Single”
WC
96kHz
AES
“Single”
/
Input
“ADAT”
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ApogeeQuicktest
:
AD-­16X
(cont.)
Test
3
:
AES
I/O
Set
the
unit
as
in
Test
2
except
for
the
‘Input’
source
on
the
DA-­16X,
which
should
be
set
to
AES
instead
of
ADAT.
Test
all
16
channels
as
in
Test
2.
Test
4
:
Soft
Limit
Engage
SOFT
LIMIT
on
the
AD-­16X
and
input
a
+22dBu
1kHz
sine
wave
to
each
of
the
unit’s
chan-­
nels.
Verify
that
no
red
OVER
LEDs
light.
Test
5
:
WC
Output
Toggle
the
AD-­16X’s
sample
rate
through
the
values
44.1-­192kHz.
Verify
that
the
DA-­16X
slaved
to
the
unit
NARROW
locks
at
the
corresponding
sample
rate
for
each
selection.
Test
6
:
WC
Input
Set
the
AD-­16X
to
WC
and
set
the
DA-­16X
to
INT.
Toggle
the
DA-­16X’s
sample
rate
through
the
values
44.1-­192kHz,
verifying
that
the
AD-­16X
NARROW
locks
at
the
corresponding
sample
rate
for
each
selection.
Test
7
:
PSU
Output
Voltage
PASSED
PASSED
0Vdc
24Vdc
Test
8
:
Main
PCB
Supply
Voltages
PASSED
Test
the
points
shown
below
for
the
indicated
voltages
+-­
0.2Vdc.
Check:
PASSED
PASSED
Test
the
points
shown
below
for
the
indicated
voltages
+-­
0.2Vdc.
Check
the
Molex
connector
J1
on
the
main
PCB
for:
Pin
6
(Blue)
:
0Vdc
Pin
5
(Yellow)
:
0Vdc
Pin
4
(Yellow)
:
0Vdc
Pin
3
(Red)
:
+24Vdc
Pin
2
(Red)
:
+24Vdc
Pin
1
(Brown)
:
+24Vdc
PASSED
C9:
+5Vdc
C3:
+5.5Vdc
on
the
side
closest
to
CR1
C8:
+15Vdc
on
the
side
closest
to
C17
C9:
+5Vdc
on
the
side
closest
to
C10
C3:
+5.5Vdc
C17:
-­15Vdc
C17:
-­15Vdc
on
the
side
closest
to
T1
C8:
+15Vdc
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ApogeeQuicktest
:
AD-­16X
(cont.)
Test
8
:
Main
PCB
Supply
Voltages
(cont.)
PASSED
Test
the
points
shown
below
for
the
indicated
voltages
+-­
0.2Vdc.
Check:
R15:
+5Vdc
on
both
sides
of
the
resistor
R18:
+3.3Vdc
on
both
sides
R18:
of
the
resistor
+3.3Vdc
R15:
+5Vdc
Test
9
:
Digital
Voltages
PASSED
Test
the
points
shown
below
for
the
indicated
voltages
+-­
0.2Vdc.
U11:
+3.3Vdc
Check:
U11
Pin
2:
+1.8Vdc
U11
Pin
3:
+3.3Vdc
U11
Pin
4:
+1.8Vdc
U11:
+1.8Vdc
U10
Y4
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ApogeeQuicktest
:
AD-­16X
(cont.)
Test
10
:
Digital
Voltages
(cont.)
PASSED
Test
the
points
shown
below
for
the
indicated
voltages
+-­
0.2Vdc.
Y2
Check:
U13
Pin
1:
+3.3Vdc
U13
Pin
3:
+3.3Vdc
U13
Pin
4:
+2.5Vdc
U14
U16
U13:
+2.5Vdc
U13:
+3.3Vdc
P11
U13:
+3.3Vdc
Test
11
:
A/D
Voltages
PASSED
Measure
both
sides
of
the
resistors
indicated
below
with
a
diagonal
hash
line
for
+15Vdc.
Measure
both
sides
of
the
resistors
indicated
below
with
a
solid
line
for
-­15Vdc.
Also
check:
U22
Pin
1:
+5.5Vdc
(Analog)
U22
Pin
5:
+5Vdc
(Analog)
Also
check:
U24
Pin
1:
+5.5Vdc
(Analog)
U24
Pin
5:
+5Vdc
(Analog)
U23
Pin
1:
+5.5Vdc
(Analog)
U23
Pin
5:
+5Vdc
(Analog)
U22:
+5Vdc
U22:
+5.5Vdc
U23:
+5.5Vdc
U26
Pin
1:
+5.5Vdc
(Analog)
U26
Pin
5:
+5Vdc
(Analog)
U24:
+5Vdc
U23:
+5Vdc
U24:
+5.5Vdc
U26:
+5Vdc
U26:
+5.5Vdc
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ApogeeQuicktest
:
AD-­16X
(cont.)
Test
12
:
A/D
Voltages
(cont.)
PASSED
Measure
both
sides
of
the
resistors
indicated
below
with
a
diagonal
hash
line
for
+15Vdc.
Measure
both
sides
of
the
resistors
indicated
below
with
a
solid
line
for
-­15Vdc.
Also
check:
Also
check:
U43
Pin
1:
+5.5Vdc
(Analog)
U45
Pin
1:
+5.5Vdc
(Analog)
U43
Pin
5:
+5Vdc
(Analog)
U45
Pin
5:
+5Vdc
(Analog)
U44
Pin
1:
+5.5Vdc
(Analog)
U44
Pin
5:
+5Vdc
(Analog)
U43:
+5Vdc
U43:
+5.5Vdc
U44:
+5.5Vdc
U46
Pin
1:
+5.5Vdc
(Analog)
U46
Pin
5:
+5Vdc
(Analog)
U45:
+5Vdc
U44:
+5Vdc
U45:
+5.5Vdc
U46:
+5Vdc
U46:
+5.5Vdc
P25
P4
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
!
!
!
47
Apogee Service Manual - DA16X
DA16X Technical Documents
Tech Notes + QuickTest
CONFIDENTIAL - Redistribution without consent strictly prohibited - Apogee Electronics Corporation - © 2013
48
ApogeeTechNotes:
AD/DA16X Troubleshooting v 1.0
When troubleshooting the AD and DA16X, the first step should always be to verify the firmware of the
unit by powering off the unit, pressing and holding the PREV button and powering on the unit.
The latest version of firmware for the AD16X is 2.01
The latest version of firmware for the DA16X is 2.05
AD/DA16X firmware (and complete update instructions) are available at our website here:
http://www.apogeedigital.com/downloads/
Symptom -­ When I power up the AD/DA16X, I get “00.00” on the display.
Solution -­ There are several causes for such a symptom:
1) If no signal is connected to the selected clock source, the sample rate will indicate 00.00. Connect
a valid clock signal to the selected clock source.
2) If a faulty or unprogrammed X-­Option card is installed in the AD/DA16X Option slot, the AD/DA16X
won’t boot up correctly and will indicate 00.00. Verify by removing installed X-­Option cards. (If the AD/DA16X boots up correctly after removing an X-­HD card, the X-­HD card may need to be re-­programmed. Please see the TechNote entitled “X-­HD troubleshooting”.
3) If a MIDI update of the AD/DA16X has been attempted (or “Midi Update Mode entered accidentally) and “00.00” is displayed, the update has failed. It’s necessary to obtain another Mega8 EPROM chip from Apogee Support and re-­load the AD or DA16X firmware via MIDI.
Use the EPROM labelled EC7 in the AD16X
Use the EPROM labelled F7A in the DA16X
4) If the “00.00” display is encountered upon power up and none of the above cases applies, the Mega8 EPROM has failed. Again, it’s necessary to obtain another Mega8 EPROM chip from Apogee Support and re-­load the AD or DA16X firmware via MIDI.
Use the EPROM labelled EC7 in the AD16X
Use the EPROM labelled F7A in the DA16X
Under certain circumstances it’s possible to install an EPROM directly without the necessity of re-­
programming via MIDI. These circumstances are : a) The AD16X was previously programmed with
version 2.01 firmware, the DA16X was previously programmed with version 2.05 firmware; b) the
failure was not caused by a faulty X-­Option card or failed MIDI update attempt. If there is any doubt, better to install the EPROMs noted in step 3 and re-­program the unit via MIDI.
If the failed units were previously programmed with 2.01 (AD16X or 2.05 (DA16X):
Use the EPROM labelled E33 in the AD16X
Use the EPROM labelled 932 in the DA16X
Though earlier units may have been upgraded in the field, all AD16Xs beginning with s/n ADX0659
were programmed from the factory with v. 2.01. All DA16Xs beginning with s/n DAX0461 were programmed with v. 2.05 from the factory.
Please note that these EPROMs are re-­programmable; return of old EPROMs to Apogee is appreciated.
Apogee Electronics • 1715 Berkeley Street Santa Monica, California 90404 • 310-­584-­9394 • service@apogeedigital.com
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49
ApogeeTechNotes:
AD/DA16X Troubleshooting v 1.0
Symptom -­ AD16X -­ I’m getting distortion or excessive noise on some or all AD16X channels; the symptom can occur when SOFT LIMIT is engaged.
Solution -­ Due to manufacturing tolerances on earlier production runs, instabilities have been observed on some AD16Xs which cause distortion on the analog inputs. This is resolved by replacing the 1.65k resis-­
tor at locations 105 to 1605 with a 2k resistor.The location of R 1605 is indicated below; to locate the other 15 resistors, identify the repeating pattern of component layout (which repeats for each of 16 channels) and locate the corresponding resistor placement. As with any surface mount component, care must be taken to ensure that the resistor is properly soldered on both sides and not damaged upon installation. We recommend inspecting the installed resistors under a microscope. This modification has been completed at the factory on AD16X s/n ADX0659 and above.
Apogee Electronics • 1715 Berkeley Street Santa Monica, California 90404 • 310-­584-­9394 • service@apogeedigital.com
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50
ApogeeTechNotes:
AD/DA16X Troubleshooting v 1.0
Symptom -­ AD/DA16X -­ I’m getting erratic behavoir on the front panel, or some buttons don’t work correctly.
Solution -­ Due to a manufacturing process which has been since corrected, excess humidity under certain capacitors can cause shorts under the cap. To resolve the issue, it’s necessary to remove the capaci-­
tors indicated below and clean the solder pads with 90% isopropyl alcohol. Once the circuit board is completely dry, re-­install the capacitors. Remove, clean and replace C18, C13, C16, C9, C6, C7,C8, C19, C17, C2, C5, C1, C3, C4, and C12.
Symptom -­ AD/DA16X -­ The unit powers up inconsistently, or not at all.
Solution -­ There are two issues that may cause this s0ymptom:
1) A faulty X-­Option card is installed in the Option slot. Remove an installed Option card and verify if the symptom is resolved.
2) If the symptom persists with no Option card installed, replace capacitor C14 (.1uf) with a .01 uf capacitor. The location of C14 is indicated below. This modification has been completed at the factory on AD16X s/n ADX0659 and above and DA16X s/n 594 and above.
Symptom -­ AD16X -­ I’m seeing inconsistent conversion levels across the 16 A/Ds
Solution -­ A few firmware updates have been released to address inconsistent levels under various operat-­
ing conditions. Please be sure to verify that the AD16X has been updated to the latest firmware version,available from our web site here: http://www.apogeedigital.com/downloads/.
Symptom -­ AD16X -­ The AES Outputs are not working correctly.
Solution -­ Status bits in version 1.37 firmware are not correctly transmitted; update to the latest firmware ver-­
sion.Also, note that AES breakout cables for the Digidesign 192 are not compatible with the AD16X’s AES Out.
Symptom -­ AD/DA16X -­ When locked to an external 96Khz clock, the display reads “96.01”.
Solution -­ An indication of 96.01 is a rounding error in the sample rate display that has been resolved in the most recent firmware version.
Apogee Electronics • 1715 Berkeley Street Santa Monica, California 90404 • 310-­584-­9394 • service@apogeedigital.com
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51
ApogeeTechNotes:
AD/DA16X Troubleshooting v 1.0
Symptom -­ AD/DA16X -­ Either one channel or a pair of channels no longer works.
Solution -­ By testing different digital output formats (on the AD) or different digital input formats (on the DA), it’s possible to determine whether faults are occuring in the digital or analog stage of the converter. When it’s been determined that the failure is in the analog section, the following troubleshooting hints apply.
As with any analog circuitry, best to start with the power supply. The “+” and “-­” 15 volt lines of each channel are “decouped” from the rest of the unit using “fuse” resistors, which will open when a short in the analog circuitry causes an excess flow of current. These resistors prevent the failure of the entire unit if a short occurs in one channel.
As these resistors are connected in the “+” and “-­” 15 volt lines of each channel, voltage should be measured on both sides of the resistors. If voltage is present on one side only, the resistor has “blown”, and usually indicates a short in the corresponding channel.
Once a resistor has blown, the short must be found and removed, and the resistor replaced.The AD16X uses 10 ohm resistors, while the DA16X uses 1 ohm resistors. As a general guideline, if only one power rail has blown, it’s most likely that a tantalum capacitor has shorted. Look for discolored components, and lightly touch components, looking for components that are excessively hot. If both power rails have blown, it’s most likely that an IC has failed. Again, look for discolored or hot components. The location of fuse resistors is indicated below for the AD16X and DA16X. The portions of circuitry shown are taken from the front of analog circuitry “block” (as depicted on p. 2 of this document). AD16X DA16X
-­15 v
15 v
Apogee Electronics • 1715 Berkeley Street Santa Monica, California 90404 • 310-­584-­9394 • service@apogeedigital.com
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52
ApogeeTechNotes : DA16X v2.05 Firmware
`
This TechNote addresses issues experienced when updating a DA16X to v 2.03.
Symptoms : 1) When the DA16X is updated from 1.xx to 2.03, Optical ports no longer function correctly. 2) When calibrating an AD (such as the AD16X) so -­10dBV = -­12dBFs, it is not possible to calibrate the DA16X for unity gain (i.e. -­12 dBFs = -­10 dBV). Resolution : Install v 2.05 to resolve these issues. Also, connecting more than 1 Optical input usually resolves the Optical port issue when 2.03 is installed.
Minimum calibration level with v 2.05 is -­12 dBFs = -­10 dBV
Firmware is available from the Apogee website here:
Please excuse any inconvenience caused by this issue,
The Apogee Technical Support Team
service@apogeedigital.com
http://www.apogeedigital.com/downloads/
Apogee Electronics 3145 Donald Douglas Loop South Santa Monica California 310-­915-­1000 service@apogeedigital.com
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53
ApogeeQuickTest
:
DA-­16X
Connect
the
DA-­16X
in
the
manner
shown
below;
to
conduct
this
test
a
known
good
AD-­16X
is
required.
A
clean
sound
and
monitoring
system
may
be
used
in
lieu
of
an
audio
test
set.
AD-­16X
Analog
Out
Audio
Test
Set
(or
Audio
Sound
Source
and
Monitoring
System)
DA-­16X
WC
I/O
Set
the
AD-­16X
under
test
to
INT
and
the
DA-­16X
to
WC
Analog
In
Audio
Test
Set
(or
Audio
Sound
Source
and
Monitoring
System)
Test
1
:
ALL
LEDs
With
the
unit
powered
down,
hold
down
the
“Up”,
“Down”,
“Prev”,
and
“Next”
buttons
while
power-­
ing
up
the
unit.
All
LEDs
should
light.
If
the
test
passes,
power
down
the
unit,
hold
down
the
“Down”
button,
and
power
up
the
unit
to
reset
it.
Test
2
:
D/A,
Optical
I/O
Set
the
units
as
shown
below.
Sequentially
connect
analog
input/outputs
1-­8
to
the
test
set
(or
audio
system)
and
verify
that
signal
passes
cleanly.
Once
channels
1-­8
are
verified,
connect
analog
input/out-­
puts
9-­16
to
the
test
set
and
verify
that
signal
passes
cleanly
on
those
channels
as
well.
For
all
channels,
if
inputting
a
19.5
dBu
1kHz
sine
wave,
output
level
should
measure
approximately
19.5
dBu;
output
THD+N
should
measure
<
-­95
dB.
PASSED
PASSED
INT
96kHz
Soft
Limit
“Off”
/
AES
“Single”
WC
96kHz
AES
“Single”
/
Input
“ADAT”
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
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54
ApogeeQuicktest
:
DA-­16X
(cont.)
Test
3
:
AES
I/O
Set
the
unit
as
in
Test
2
except
for
the
‘Input’
source
on
the
DA-­16X,
which
should
be
set
to
AES
instead
of
ADAT.
Test
all
16
channels
as
in
Test
2.
Test
4
:
WC
Output
Toggle
the
AD-­16X’s
sample
rate
through
the
values
44.1-­192kHz.
Verify
that
the
DA-­16X
slaved
to
the
unit
NARROW
locks
at
the
corresponding
sample
rate
for
each
selection.
Test
5
:
WC
Input
Set
the
AD-­16X
to
WC
and
set
the
DA-­16X
to
INT.
Toggle
the
DA-­16X’s
sample
rate
through
the
values
44.1-­192kHz,
verifying
that
the
AD-­16X
NARROW
locks
at
the
corresponding
sample
rate
for
each
selection.
Test
6
:
PSU
Output
Voltage
PASSED
0Vdc
24Vdc
Test
7
:
Main
PCB
Supply
Voltages
PASSED
Test
the
points
shown
below
for
the
indicated
voltages
+-­
0.2Vdc.
Check:
PASSED
PASSED
Test
the
points
shown
below
for
the
indicated
voltages
+-­
0.2Vdc.
Check
the
Molex
connector
J1
on
the
main
PCB
for:
Pin
6
(Blue)
:
0Vdc
Pin
5
(Yellow)
:
0Vdc
Pin
4
(Yellow)
:
0Vdc
Pin
3
(Red)
:
+24Vdc
Pin
2
(Red)
:
+24Vdc
Pin
1
(Brown)
:
+24Vdc
PASSED
C9:
+5Vdc
C3:
+5.5Vdc
on
the
side
closest
to
CR1
C8:
+15Vdc
on
the
side
closest
to
C17
C9:
+5Vdc
on
the
side
closest
to
C10
C17:
-­15Vdc
on
the
side
closest
to
T1
C3:
+5.5Vdc
C17:
-­15Vdc
C8:
+15Vdc
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
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55
ApogeeQuicktest
:
DA-­16X
(cont.)
Test
8
:
Main
PCB
Supply
Voltages
(cont.)
PASSED
Test
the
points
shown
below
for
the
indicated
voltages
+-­
0.2Vdc.
Check:
R15:
+5Vdc
on
both
sides
of
the
resistor
R18:
+3.3Vdc
on
both
sides
R18:
of
the
resistor
+3.3Vdc
R15:
+5Vdc
Test
9
:
Digital
Voltages
PASSED
Test
the
points
shown
below
for
the
indicated
voltages
+-­
0.2Vdc.
Check:
U11
Pin
1:
+3.3Vdc
U11
Pin
3:
+3.3Vdc
U11
Pin
5:
+2.5Vdc
U11:
+3.3Vdc
U11:
+3.3Vdc
U11:
+2.5Vdc
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
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56
ApogeeQuicktest
:
DA-­16X
(cont.)
Test
10
:
Digital
Voltages
(cont.)
PASSED
Test
the
points
shown
below
for
the
indicated
voltages
+-­
0.2Vdc.
Check:
U13
Pin
1:
+3.3Vdc
U13
Pin
3:
+3.3Vdc
U13
Pin
5:
+2.5Vdc
Y2
U14
U16
U11:
+2.5Vdc
U11:
+3.3Vdc
U11:
+3.3Vdc
Test
11
:
D/A
Voltages
PASSED
Measure
both
sides
of
the
resistors
indicated
below
with
a
diagonal
hash
line
for
+15Vdc.
Measure
both
sides
of
the
resistors
indicated
below
with
a
solid
line
for
-­15Vdc.
Also
check:
Also
check:
U43
Pin
1:
+5.5Vdc
(Analog) U49
Pin
1:
+5.5Vdc
(Analog)
U43
Pin
5:
+5Vdc
(Analog) U49
Pin
5:
+5Vdc
(Analog)
U44
Pin
1:
+5.5Vdc
(Analog) U44
Pin
5:
+5Vdc
(Analog) U51:
+5.5Vdc
U43:
+5.5Vdc
U51:
+5Vdc
U43:
+5Vdc
U48
U51
Pin
1:
+5.5Vdc
(Analog)
U51
Pin
5:
+5Vdc
(Analog)
U49:
+5.5Vdc
U44:
+5.5Vdc
U49:
+5Vdc
U44:
+5Vdc
U47
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
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57
ApogeeQuicktest
:
DA-­16X
(cont.)
Test
12
:
D/A
Voltages
(cont.)
PASSED
Measure
both
sides
of
the
resistors
indicated
below
with
a
diagonal
hash
line
for
+15Vdc.
Measure
both
sides
of
the
resistors
indicated
below
with
a
solid
line
for
-­15Vdc.
Also
check:
Also
check:
U53
Pin
1:
+5.5Vdc
(Analog) U59
Pin
1:
+5.5Vdc
(Analog)
U53
Pin
5:
+5Vdc
(Analog) U59
Pin
5:
+5Vdc
(Analog)
U54
Pin
1:
+5.5Vdc
(Analog) U54
Pin
5:
+5Vdc
(Analog) U61:
+5.5Vdc
U61:
+5Vdc
U53:
+5.5Vdc
U53:
+5Vdc
U61
Pin
1:
+5.5Vdc
(Analog)
U61
Pin
5:
+5Vdc
(Analog)
U59:
+5.5Vdc
U59:
+5Vdc
U54:
+5.5Vdc
U54:
+5Vdc
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
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58
Apogee Service Manual - Rosetta 800
Rosetta 800 Technical Documents
Tech Notes + QuickTest
CONFIDENTIAL - Redistribution without consent strictly prohibited - Apogee Electronics Corporation - © 2013
59
ApogeeTechNotes:
ROSETTA 800 Troubleshooting v 1.0
As of this writing (June 2005), there are no firmware updates for the Rosetta 800. Symptom -­ With an X-­HD card installed, my Rosetta 800 isn’t recognized by Pro Tools software. If I set Source To Digital Out or Source To Analog Out to Option, the LED blinks.
Solution -­ There are two causes for such a symptom:
1) If a faulty or unprogrammed X-­Option card is installed in the Rosetta Option slot, the Option LED will blink regardless of clock settings. If the blinking is constant, then the Symptom is most likely a faulty X-­Option card. If an X-­HD card is installed and this symptom is encountered, the card may need to be re-­programmed. Please see the TechNote entitled “X-­HD troubleshooting”.
2) If the Option card blinks intermittently, or occurs with a known good X-­HD card , it’s likely that the Option card header on the Rosetta 800 motherboard may have a short. a) Remove the Rosetta 800 motherboard by disconnecting the AC, then the power supply outpu-­
tand the front panel ribbon connector; unscrew the DB-­25 retaining screws on the back panel and the 9 screws holding the board to the chassis.
b) Flip the motherboard over and carefully inspect the underside of the Option connector; look for shorts between the solder pads in the area shown below.
c) Reinstall the motherboard.
Apogee Electronics • 1715 Berkeley Street Santa Monica, California 90404 • 310-­584-­9394 • service@apogeedigital.com
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60
ApogeeTechNotes:
ROSETTA 800 Troubleshooting v 1.0
Symptom -­ I’m getting erratic behavoir on the front panel, or some buttons don’t work correctly.
Solution -­ Due to a manufacturing process which has been since corrected, excess humidity under certain capacitors can cause shorts under the cap. To resolve the issue, it’s necessary to remove the capaci-­
tors indicated below and clean the solder pads with 90% isopropyl alcohol. Once the circuit board is completely dry, re-­install the capacitors. Remove, clean and re-­install C7, C19,C16,C12, C8, C11,C14,C6,C5, C3, C9, C2, C4, C1, C18, C17 and C 15 (as shown below).
Symptom -­ If SYNC is set to AES and no signal is present at the AES input, the front panel freezes, at which point the unit must be reset.
Solution -­ This is a known bug; it is recommended to ensure that an AES signal is present at the input before setting SYNC to AES
Symptom -­ AES I/O doesn’t seem to function at all.
Solution -­ Verify the format of the AES cable used; the cable format used for the AES I/O DB-­25 connector is commonly referred to as the Yamaha format, and is supported by several manufacturers. AES cables made for the Digidesign 192 AES DB-­25 connector are not compatible.
Apogee Electronics • 1715 Berkeley Street Santa Monica, California 90404 • 310-­584-­9394 • service@apogeedigital.com
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61
ApogeeQuickTest
:
Rosetta
800
Connect
the
Rosetta
800
in
the
manner
shown
below.
A
clean
sound
sound
and
monitoring
system
may
be
used
in
lieu
of
an
audio
test
set.
Analog
Out
Analog
In
Audio
Test
Set
(or
Audio
Sound
Source
and
Monitoring
System)
*
WC
Out
WC
In
Clock
Receiver/Generator
@
44.1-­192kHz
(for
example,
another
Apogee
interface)
*
Loop
4
AES
Out
XLRs
to
4
AES
In
XLRs
Set
A/D
and
D/A
jumpers
to
their
default
(+4dBu
=
-­16
dBFs)
position
(p.13
Rosetta
800
User’s
Guide).
Test
1
:
All
LEDs
With
the
unit
powered
down,
hold
down
the
“WC
I/O
SYNC
button
and
power
up
the
unit.
All
LEDs
should
light.
If
the
test
passes,
power
down
the
unit,
hold
down
the
SAMPLE
RATE
button
and
power
up
the
unit
to
reset
it.
Test
2
:
A/D,D/A,
Optical
I/O
Set
the
unit
as
shown
below.
Sequentially
connect
analog
input/output
1-­8
to
the
test
set
(or
audio
system)
and
verify
that
signal
passes
cleanly.
If
inputting
a
19.5
dBu
1kHz
sine
wave,
output
level
should
measure
approximately
19.5
dBu;
output
THD+N
should
measure
<
-­95
dB.
PASSED
PASSED
96kHz
Off
Analog
Off
24-­Bit
ADAT
S/MUX
Test
3
:
AES
I/O
Set
the
unit
as
in
Test
2
but
with
SOURCE
TO
ANALOG
OUT
set
to
AES.
Test
all
8
channels
as
in
Test
2.
Test
4
:
Soft
Limit
Engage
SOFT
LIMIT
and
input
a
+22
dBu
1kHz
sine
wave.
Test
all
channels,
verifying
that
no
red
OVER
LEDs
light.
Test
5
:
WC
Output
Set
the
Clock
Receiver/Generator
(for
example,
another
Apogee
interface)
to
lock
to
the
Rosetta
800.
On
the
Rosetta
800,
toggle
SAMPLE
RATE
through
the
values
44.1-­192kHz
(not
EXT).
Verify
that
the
Clock
Receiver
locks
at
the
corresponding
sample
rate.
PASSED
PASSED
PASSED
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
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62
ApogeeQuicktest
:
Rosetta
800
(cont.)
Test
6
:
WC
Input
Set
the
Clock
Receiver/Generator
to
Internal,
and
set
SAMPLE
RATE
on
the
Rosetta
800
to
EXT.
Toggle
the
Clock
Generator’s
sample
rate
through
the
values
44.1-­192kHz
and
verify
that
the
Rosetta
800
locks
at
the
corresponding
rate
and
that
the
WIDE
and
NARROW
LEDs
light.
Test
7
:
PSU
Voltage
Output
PASSED
Test
the
points
shown
below
for
the
indicated
voltage,
+-­.2
v
-­15Vdc +0Vdc +5Vdc
+15Vdc
Check
the
Molex
connector
from
the
PSU
for:
pin
6
(blue)
:
-­15
Vdc
5
(yellow)
:
0
Vdc
4
(yellow)
:
0
Vdc
3
(red)
:
+5
Vdc
2
(red)
:
+5
Vdc
1
(brown)
:
+15
Vdc
C46:
+5Vdc
Check
both
sides
of
L2
for
+15
Vdc
Check
both
sides
of
L3
for
-­15
Vdc
Check
C46
for
+5
Vdc
L2:
+15Vdc
L3:
-­15Vdc
L2:
+15Vdc
L3:
-­15Vdc
Test
8
:
Digital
Voltages
Test
the
points
shown
below
for
the
indicated
voltage,
+-­.2
v
PASSED
PASSED
U72:
+2.5Vdc
U72:
+5Vdc
Check
VR1
pin
1
:
+5
Vdc
VR1
pin
3
:
+3.3
Vdc
U33
pin
1
:
+15
Vdc
U33
pin
5
:
+12
Vdc
U72
pin
1
:
+5
Vdc
U72
pin
5
:
+2.5
Vdc
VR1:
+5Vdc
U33:
+12Vdc
VR1:
+3.3Vdc
U33:
+15Vdc
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
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63
ApogeeQuicktest
:
Rosetta
800
(cont.)
Test
9
:
A/D
Voltages
Measure
both
sides
of
the
resistors
indicated
below
with
a
diagonal
hash
line
for
+15
Vdc
Measure
both
sides
of
the
resistors
indicated
below
with
a
solid
line
for
-­15
V
dc.
Also
check:
Also
check:
U2
pin
1:
+5.5Vdc
(Analog)
U11
pin
1:
+5.5Vdc
(Analog)
U2
pin
5:
+5Vdc
(Analog)
U11
pin
5:
+5Vdc
(Analog)
U5
pin
1:
+5.5Vdc
(Analog)
U5
pin
5:
+5Vdc
(Analog)
U14:
+5Vdc
U14:
+5.5Vdc
U11:
+5.5Vdc
U14
pin
1:
+5.5Vdc
(Analog)
U14
pin
5:
+5Vdc
(Analog)
U5:
+5Vdc
U11:
+5Vdc
U2:
+5.5Vdc
U5:
+5.5Vdc
U2:
+5Vdc
Test
10
:
D/A
Voltages
Measure
both
sides
of
the
resistors
indicated
below
with
a
diagonal
hash
line
for
+15
Vdc
Measure
both
sides
of
the
resistors
indicated
below
with
a
solid
line
for
-­15
V
dc.
Also
check:
Also
check:
U22
pin
1:
+5.5Vdc
(Analog)
U15
pin
1:
+5.5Vdc
(Analog)
U22
pin
5:
+5Vdc
(Analog)
U15
pin
5:
+5Vdc
(Analog)
U19
pin
1:
+5.5Vdc
(Analog)
U19
pin
5:
+5Vdc
(Analog)
U25:
+5Vdc
U25:
+5.5Vdc
U22:
+5Vdc
U22:
+5.5Vdc
PASSED
PASSED
U25
pin
1:
+5.5Vdc
(Analog)
U25
pin
5:
+5Vdc
(Analog)
U19:+5Vdc
U19:
+5.5Vdc
U15:
+5Vdc
U15:
+5.5Vdc
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
CONFIDENTIAL - Redistribution without consent strictly prohibited - Apogee Electronics Corporation - © 2013
64
Apogee Service Manual - Big Ben
Big Ben Technical Documents
Tech Notes + QuickTest
CONFIDENTIAL - Redistribution without consent strictly prohibited - Apogee Electronics Corporation - © 2013
65
ApogeeTechNotes:
Big Ben DSP Firmware
September 9, 2005
Apogee announces the availibility of new DSP firmware for the Big Ben Master Clock. This firmware resolves the following issue, which is quite rarely encountered:
• When Big Ben is locked internally (usually at 44.1kHz), the actual output frequency is 24.55kHz.
Most receiving devices will no longer lock to such a low frequency clock.
The issue is usually temperature dependent.
To update firmware, U50 must be replaced with a new DSP chip obtained from Apogee Electronics.
If U50 is in a socket:
1 2 3 4 5 6 7 Unplug the unit and remove the top cover.
Locate U50, as indicated in the diagram below.
Locate the diagonal notch at one corner of the chip, and note its orientation.
Carefully remove the DSP by gently prying each end of the chip until it may
be easily removed by hand. Take care not to damage the unit’s motherboard.
Gently place the new DSP on top of the socket, taking care to correctly orient the diagonal notch. After verifying the orientation of the chip, press it firmly into the socket.
Replace the top cover, plug the unit in, and verify the proper operation of the unit.
If U50 is soldered to the circuit board, do not attempt replacement unless equipped with appropriate surface mount
tools. Otherwise, the unit must be returned to Apogee for chip replacement.
U50
Apogee Electronics • 1715 Berkeley Street Santa Monica, California 90404 • 310-­584-­9394 • service@apogeedigital.com
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66
ApogeeTechNotes:
Big Ben Firmware v 2.0
July 25th, 2005
Apogee announces the availibility of new firmware for the Big Ben Master Clock. This firmware adds the following capabilities:
• When choosing AES as a clock source (and digital input source), it is now possible to set the AES input format differently than the AES output format, thus allowing conversion between single and double wire formats. • Support for the X-­Video Option card
The firmware also resolves the following issues:
• When Big Ben is locked to an external word clock, the actual output frequency was half
the displayed frequency. This issue was most frequently encountered when Big Ben was
locked to a 96kHz word clock.
• On some units, S/MUX/4 bit order was not correct.
To update firmware, EPROMs U6, U9 and U49 must be replaced with new EPROMs obtained from Apogee Electronics.
1 2 3 4 5 6 7 Unplug the unit and remove the top cover.
Locate U6,U9 and U49, as indicated in the diagram below.
Locate the semi-­circular notch at one end of each EPROM, and note its orientation.
Carefully remove the EPROMs by gently prying each end of the chip until it may
be easily removed by hand. Take care not to damage the unit’s motherboard.
Gently place the new EPROM on top of the socket, taking care to correctly orient the semi-­circular notch.
• Install the EPROM marked 7E4 in location U6
• Install the EPROM marked 239 in location U9
• Install the EPROM marked 935 in location U49 After verifying that all the EPROM’s legs are correctly inserted, firmly press the EPROM into the socket.
Replace the top cover, plug the unit in, and verify the proper operation of the unit.
U49
U9
U6
Apogee Electronics • 1715 Berkeley Street Santa Monica, California 90404 • 310-­584-­9394 • service@apogeedigital.com
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67
ApogeeQuickTest
:
Big
Ben
Connect
the
Big
Ben
in
the
manner
shown
below.
A
known
good
AD-­16X
or
DA-­16X
is
required
to
conduct
this
test.
A
clean
sound
and
monitoring
system
may
be
used
in
lieu
of
an
audio
test
set.
Big
Ben
AD/DA-­16X
WC
I/O
Set
the
Big
Ben
under
test
to
INT
and
the
AD/DA-­16X
to
WC
Test
1
:
ALL
LEDs
With
the
unit
powered
down,
hold
down
the
“Up”,
“Down”,
“Prev”,
and
“Next”
buttons
while
power-­
ing
up
the
Big
Ben.
All
LEDs
should
light.
If
the
test
passes,
power
down
the
unit,
hold
down
the
“Down”
button,
and
power
up
the
unit
to
reset
it.
PASSED
PASSED
Test
2
:
WC
Output
1
Toggle
Big
Ben’s
sample
rate
through
the
values
44.1-­192kHz.
Verify
that
the
AD/DA-­16X
slaved
to
the
unit
NARROW
locks
at
the
corresponding
sample
rate
for
each
selection.
Test
3
:
WC
Output
2
Connect
the
Big
Ben
as
indicated
below.
Toggle
Big
Ben’s
sample
rate
through
the
values
44.1-­
192kHz.
Verify
that
the
AD/DA-­16X
slaved
to
the
unit
NARROW
locks
at
the
corresponding
sample
rate
for
each
selection.
PASSED
Big
Ben
AD/DA-­16X
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
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68
ApogeeQuicktest
:
BIG
BEN
(cont.)
Test
4
:
WC
Output
3
Connect
the
Big
Ben
as
indicated
below.
Toggle
Big
Ben’s
sample
rate
through
the
values
44.1-­
192kHz.
Verify
that
the
AD/DA-­16X
slaved
to
the
unit
NARROW
locks
at
the
corresponding
sample
rate
for
each
selection.
PASSED
Big
Ben
AD/DA-­16X
Test
5
:
WC
Output
4
Connect
the
Big
Ben
as
indicated
below.
Toggle
Big
Ben’s
sample
rate
through
the
values
44.1-­
192kHz.
Verify
that
the
AD/DA-­16X
slaved
to
the
unit
NARROW
locks
at
the
corresponding
sample
rate
for
each
selection.
PASSED
Big
Ben
AD/DA-­16X
Test
6
:
WC
Output
5
Connect
the
Big
Ben
as
indicated
below.
Toggle
Big
Ben’s
sample
rate
through
the
values
44.1-­
192kHz.
Verify
that
the
AD/DA-­16X
slaved
to
the
unit
NARROW
locks
at
the
corresponding
sample
rate
for
each
selection.
PASSED
Big
Ben
AD/DA-­16X
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
CONFIDENTIAL - Redistribution without consent strictly prohibited - Apogee Electronics Corporation - © 2013
69
ApogeeQuicktest
:
Big
Ben
(cont.)
Test
7
:
WC
Output
6
Connect
the
Big
Ben
as
indicated
below.
Toggle
Big
Ben’s
sample
rate
through
the
values
44.1-­
192kHz.
Verify
that
the
AD/DA-­16X
slaved
to
the
unit
NARROW
locks
at
the
corresponding
sample
rate
for
each
selection.
PASSED
Big
Ben
AD/DA-­16X
Test
8
:
WC
Input
Set
Big
Ben
to
WC
and
set
the
AD/DA-­16X
to
INT.
Toggle
the
AD/DA-­16X’s
sample
rate
through
the
values
44.1-­192kHz,
verifying
that
Big
Ben
NARROW
locks
at
the
corresponding
sample
rate
for
each
selection.
Test
9
:
PSU
Output
Voltage
PASSED
Test
the
points
shown
below
for
the
indicated
voltages
+-­0.2Vdc.
Check
the
Molex
connector
J1
on
the
main
PCB
for:
Pin
6
(Blue)
:
0Vdc
*
Pin
5
(Yellow)
:
0Vdc
Pin
4
(Yellow)
:
0Vdc
Pin
3
(Red)
:
+5Vdc
Pin
2
(Red)
:
+5Vdc
Pin
1
(Brown)
:
0Vdc
*
PASSED
Also
Check:
C38:
+5Vdc
on
the
side
closest
to
K1.
C39:
+5Vdc
on
the
side
closest
to
K1.
C38:
+5Vdc
J1:
0Vdc
K1
C39:
+5Vdc
P16
J1:
+5Vdc
*
Some
early
serial
number
Big
Ben
units
were
shipped
with
a
different
switching
power
supply
that
output
+
and
-­
15V
to
pins
1
and
6
of
J1.
This
additional
voltage
does
not
pose
a
problem
to
Big
Ben
operation,
as
pins
1
and
6
are
“No
Connec-­
tion”
on
those
units.
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
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70
ApogeeQuicktest
:
Big
Ben
(cont.)
Test
10
:
Main
PCB
Voltages
PASSED
Test
the
points
shown
below
for
the
indicated
voltages
+-­0.2Vdc.
Check:
VR1
Pin
1:
+
5Vdc
VR1
Pin
3:
+3.3Vdc
Check:
U14
Pin
1:
+
3.3Vdc
U14
Pin
5:
+2.5Vdc
Check:
U8
Pin
1:
+
3.3Vdc
U8
Pin
5:
+2.5Vdc
U14:
+2.5Vdc
U8:
+3.3Vdc
U8:
+2.5Vdc
U7
Y1
VR1:
+5Vdc
U4
U14:
+3.3Vdc
VR1
VR1:
+3.3Vdc
Apogee
Electronics
1715
Berkeley
St,
Santa
Monica
California
90404
310-­584-­9394
service@apogeedigital.com
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71