LG KG920 - KEY Backlight

3. TECHNICAL BRIEF
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3.20 KEY backlight
This phone has 21 backlight units. AD6527 controls backlights by PWM method.
Figure 3-41.
(GPO_22)
SIDEKEY LED
470
R302 R303
470
KRC402V
Q301
B
C
E
LD301
LEBB-S14H
NA
R306
VBATVBAT
LEBB-S14H
LD302
KEY_BACKLIGHT
KEY BACKLIGHT
390
R105
LD110
LEBB-S14H
LD113
LEBB-S14H
LD106
LEBB-S14H
4.7K
R123
390
R112
LD101
LEBB-S14H
390
R118
390
R117
LD107
LEBB-S14H
LD104
LD118
LEBB-S14H
LEBB-S14H
LD117
LEBB-S14H
390
R110
390
R116
LEBB-S14H
LD109
R108
390
R107
390
LD111 LD115
LEBB-S14H LEBB-S14H
LD103
LEBB-S14H
LD116
LEBB-S14H
R122
4.7K
LEBB-S14H
LD114
LEBB-S14H
LD102
Q101
UMT2222A
390
R113R111
390
390
R103
390
R121
LD108 LD105
LEBB-S14H
R115
390
LEBB-S14H
390
R114 R120
390
R109 R119
390
LEBB-S14H
390
LD112
R104
390
VBAT
390
R106
LEBB-S14H
LD119
KEY_BACKLIGHT