Key Backlight Trouble - LG GS155 Service Manual
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Also See for GS155:
- Instructions manual (113 pages) ,
- User manual (79 pages) ,
- Getting to know manual (58 pages)
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4. TROUBLE SHOOTING
4.12 KEY backlight Trouble
TEST POINT
CIRCUIT
KEY_BACKLIGHT
LGE Internal Use Only
Figure 4.12.1
VBAT
KEY BACKLIGHT
R221
R224
R228
C246
1u
LD201
LD202
LD203
3
R229
Q202
2
KTC4075E_RTK-H
10Kohms
1
EQBN0020501
C283
2.2u
85/140
- 86 -
4. TROUBLE SHOOTING
C258
R222
R227
R230
1u
LD204
LD205
LD206
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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