Tact Key - LG SNC4R Service Manual

3. TACT KEY

6
1 ~ 1.13 V
FIG 3-1. Press Power Key
6
0.424 ~ 0.485 V
FIG 3-3. Press VOL- Key
VD33ADAC
C526 10uF
R567
0 NC
R588
10K
6
3.3VA
VD33
C564
1nF
R521
4.7K
DGND
97
PWM_VREF
98
VD33ADAC
IC501
99
VS33ADAC
6
FIG 3-2. Press Function Key
6
FIG 3-4. Press VOL+ Key
RA04
RA05
750
RA00
SWA00 SWA01
CA00
100nF
POWER
DGND
3-27
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0.72 ~ 0.82 V
0 V
RA06
820
RA01 RA02 RA03
680 820 1K
SWA02 SWA03 SWA04
VOL+ VOL- FUNC.
Only for training and service purposes.
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