i9000s Maintenance Guide Book
1.Unable to boot up：
Fault analysis
Solution
Battery problem
Charging or change battery
Power button
Change power button
Screen problem：Indicator light keeps
Reset device (Flash firmware) or change
on, No Display on screen
screen
Main board： Both indicator light and
Reset device (Flash firmware) or change
screen doesn’t work
main board
2.4G Network problem
Fault analysis
Solution
Slot problem, Unable to recognize SIM
1.Check SIM if it Normally
card
2.Check slot if it intact
3.Flash the firmware；
4.Change the main board，
Signal and Network badly
1.Change SIM card；
2.Compare signal from mobile phone or
other devices；
3.Flash the firmware；
4.Change the 4G antenna，
5.Change the main board
APN problem：Unable to access internet
1.Check APN，
but have signal
2.Flash the firmware
3.Screen problem：
Fault analysis
Solution
Unable to tap or part of failure on screen
1.Flash the firmware (OS) again；
2.Change the screen
Display problem
1.Flash the firmware (OS) again；
2.Change the screen；
3.Change the main board；
4.Failure to swipe magnetic stripe cards：
Fault analysis
Solution
There is abrasion and cracks on card
Change another card
Wrong direction to swipe card
Redress the direction to swipe card
Magnetic head damaged
Change the magnetic head
Main board problem
1.Flash the firmware；
2.Change the main board
5.IC Card swipe card failure：
Fault analysis
Solution
There is abrasion and cracks on card
Change another card
Wrong direction to swipe card
Redress the direction to swipe card
Magnetic head damaged
Change the magnetic head
Main board problem
1.Flash the firmware
2.Change the main board
6.RF Card reading failure：
Fault analysis
Solution
Whether RF Card placed into reading
Placed the card into reading area
area
Too Far
Distance for reading card 0-3cm
Card overlap
Placed one card only every time
Antenna damaged
Change the antenna；
Main board problem
Change the main board
7.Printer printing abnormal：
Fault analysis
Solution
Printing empty
Check the roll paper if it is placed
correctly
Paper stop rolling
1.Check device’s printer cover if it
fasten down；
2.Flash the firmware；
3.Change the printer
Printing unclear
1.Set the grayscale of printer
2.Change the printer
3.Flash the firmware；
Unable to Print
1.Flash the firmware；
2.Change the printer；
3.Change the main board
8.WIFI Network problem：
Fault analysis
Solution
Signal problem
Adjust Route or connect again
OS problem
Flash the firmware
Module problem
Change the main board
9.Charging problem：
Fault analysis
Solution
Power adapter problem
Change the power adapter
OS problem
Flash the firmware
Port problem
Change the main board
10.Photo taking or scanning problem：
Fault problem
Solution
Lenses problem
Clean lenses or change the lenses
Barcode problem
Change the barcode
Barcode setting problem
Check this setting of barcode type
Lens/Scanner problem
Change lens/Scanner
Main board problem
Change the main board
11．Button Problem
Fault analysis
Solution
Button FPC’s problem
Change the button FPC
OS problem
Flash the firmware again
Main board problem
Change the main board