LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 66 -
4.13 KEY backlight Trouble
Check Points
-Control IC is working properly
-Passive Parts soldering Status
TP1
R229
R231
Q200
KEY_BACKLIGHT
OFF
KEY_BACKLIGHT
ON
TEST POINT
WAVE FROM
LD200
LD201
LEWW-S14
LEWW-S14
100ohm
R223
C218
1u
LD205
LEWW-S14
R229
10K
R222
100ohm
LEWW-S14
LD208
LEWW-S14
LD209
R220
100ohm 100ohm
R221
100ohm
R216
R224
100ohm
100ohm
R219
LEWW-S14
LD206
C219
1u
R217
100ohm
R215
100ohm
1
2SC5585
Q200
2
3
LEWW-S14
LD204
100K
R231
VBAT
LEWW-S14
LD207
R218
100ohm
LD202
LEWW-S14
LEWW-S14
LD203
KEY_BACKLIGHT
CIRCUIT
TP 1
Содержание CP150
Страница 1: ...Service Manual Model CP150 Service Manual CP150 Date August 2008 Issue 1 0 Internal Use Only ...
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