LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 74 -
KEY BACKLIGHT
R212
47
LD208
R209
47
R211
47
47
R210
VA203
EVL5M02200
LD200
LD201
R206
VBAT
47
LD205
R216
47
LD202
47
R215
LD204
LD207
R207
47
R217
47
47
R208
LD209
R213
47
R214
47
LD206
LD211
LD210
LD203
VA201
VA202
KEY_BACKLIGHT
CIRCUIT
Is the level Period at VA203
Low Duty(70%)?
START
Is the level Period at VA203
High Duty(30%)?
NO
Check U102
YES
Are all LEDs
Working?
NO
YES
Check the soldering
each R and LED
Backlight will work properly.
NO
Replace or resolder
component
NO
Check U102
YES
CHECKING FLOW
TP1
Содержание KP210
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Страница 138: ...Note ...
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