LG GX200 - Page 69

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4.6.3 Checking Flow
Start
Enter the Engineer Mode and
set Key LED ON
Check Voltage of
TP1,TP2 stauts ?
Re-work or change
J1401 Try again
Check Voltage of
TP3 stauts ?
Re-work or change
R1401 and around
component Try again
Check Voltage of
TP4 stauts ?
NO
YES
NO
YES
YES
NO
Check Sub Key Board
work properly ?
Change the Sub Key
Board and
Try again
NO
YES
Re-work or change
KD101 or KD102
and Try again
Sub Key Board LED
backlight will operate
properly
Re-work or change
CPU(U401) Try again
LED work properly?
NO
YES