Only For Training And Service Purposes - LG KP235 Service Manual
Lg kp235/230 mobile phone service manual
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Also See for KP235:
- User manual (226 pages) ,
- User manual (146 pages) ,
- User manual (146 pages)
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CIRCUIT
VBAT
KEY_BACKLIGHT
CHECKING FLOW
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
KEY BACKLIGHT
(WHITE LED)
R317
0
C303
NA
START
Is the level Period at VA309
High Duty(30%)?
YES
Is the level Period at VA309
Low Duty(70%)?
YES
Are all LEDs
Working?
YES
Backlight will work properly.
- 67 -
4. TROUBLE SHOOTING
VA306
ICVS0505481FR
NO
Check U103
NO
Check U103
NO
Check the soldering
each R and LED
NO
Replace or resolder
component
VBAT
LGE Internal Use Only
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