LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 61 -
(10V,K,X7R)
KEY BACKLIGHT
LEBB-S14E
LD204
LD205
LEBB-S14E
ECZH0003103
C240
0.1u
0.1u
ECZH0003103
C239
LD201
LEBB-S14E
EDLH0004501
R220
100ohm
100ohm
R225
LD206
LEBB-S14E
LEBB-S14E
LD203
VBAT
LD202
LEBB-S14E
VBAT
R221
100ohm
100ohm
R229
R228
100ohm
R222
100ohm
nKEY_BACKLIGHT
Check soldering of
R220~222,R225,R228,R229
START
Check voltage C239,
C240 = 3.7V
NO
Check U101
YES
NO
YES
Check the soldering
Of LEDs
Backlight will work properly.
NO
Resolder the components
YES
Resolder the components
CIRCUIT
CHECKING FLOW
TP2
TP1
Содержание KP110
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