Checking Flow
START
Turn on the phone
Is the voltage level +VPWR
(R301,R328,R307,R309,R310,R314,R325,R377~R386)
3.2-4.2V?
Check LEDs’ directions
Charge or Change Battery and try again
Check the soldering of each R or
Replace them.
Re-solder or replace LEDs
NG
No
NG
OK
Yes
OK
BACKLIGHT WILL
WORK PROPERLY
Check the signal level at
KYPD_EN=high?
Replace QSC
No
Yes
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Summary of Contents for LG-UD6100
Page 25: ...Circuit Diagram Z 3 X B O X C O M ...
Page 40: ...Test Points Circuit Diagram 4 3 5 UIM Trouble CON301 3 0V 3 2 1 Z 3 X B O X C O M ...
Page 46: ...Test points Circuit Diagram 4 3 8 MIC Trouble R371 C327 M301 MIC Z 3 X B O X C O M ...
Page 55: ...BACK_END_CLOCK M_CLOCK P_CLOCK VS DATA 0 Camera Locking Error Z 3 X B O X C O M ...
Page 62: ...Z 3 X B O X C O M 0 Ohm Pad 0 Ohm Pad DNI DNI ...
Page 63: ...Z 3 X B O X C O M 0 Ohm Pad 0 Ohm Pad DNI DNI ...
Page 64: ...Z 3 X B O X C O M ...
Page 65: ...Z 3 X B O X C O M ...
Page 66: ...Z 3 X B O X C O M ...