Switch & Video Buffer Circuit Diagram - LG DP471B Service Manual

16. SWITCH & VIDEO BUFFER CIRCUIT DIAGRAM
VAA5
R40 R54
3.9K/F/0402 390/F/0402
TC9
2 1 B
VG
R34
22U/10V/1206 R36
150/F/0402
1K/F/0402
VAA5
R51 R62
3.9K/F/0402 390/F/0402
TC10
2 1 B
VB
R42
22U/10V/1206
150/F/0402 R46
1K/F/0402
VAA5
R30
R37
3.9K/F/0402 390/F/0402
Q7
TC11
PMBS3904
2 1 B
VR
R26
22U/10V/1206 R27
150/F/0402
1K/F/0402
LGE Internal Use Only
VCC_BIAS
R188
10K/F/0402
C78 10U/10V/0805
PANEL_VG
PANEL_VG
Q8
PMBS3904
VAA5
R59
100/F/0402 C207 C210
VCC_BIAS
R195
10K/F/0402
C82 10U/10V/0805
PANEL_VB
PANEL_VB
Q10
PMBS3904
VAA5
R68
100/F/0402 C219 C224
VCC_BIAS
R185
10K/F/0402
C63 10U/10V/0805
PANEL_VR
PANEL_VR
VAA5
R41 C200 C198
100/F/0402
R142 1K/F/0603
1 2
VIN_SYS PW_ON/OFF
GNDA
1 2
R109 1K/F/0603
C148 C147
VCC_BIAS
C222 C223
RF3.3V
PW_ON/OFF
R146
10K/F/0402
(14) PW_DET
R279
10K/F/0402
Q45
B 1 2
PW_KEEP
PMBS3904
VCC_BIAS C340
0.1U/25V/0402
C231 C235
GNDA
The Cover Limit Switch
SW1 A
C1
C
VCC_BIAS
GND_DC
C204 C208 GND_DC
3-51 3-52
OFF
1
SW3
SKB-12F03-G3-NS
2
3
POWER
ON
SWITCH
C146
GNDA
D17
1N4148
D18
EN_DISABLE
1N4148
R280
47K/J/0402
GNDA
COVER_SW
COVER_SW
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