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Panasonic PalmSight PV-L750 Service Manual page 239

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RELAY C.B.A.
LCD SHAFT UNIT
FROM
P2
P9001
P9002
POWER SUPPLY
REG+3.5V
BLOCK DIAGRAM
5
5
1, 2
(TO IC6001 (79))
P2
P9001
P9002
LCD PANEL (OPEN(H)/CLOSE(L))
11
11
14
P2
P9001
FP9002
UNREG
12
12
15, 16
FROM
POWER SUPPLY
BLOCK DIAGRAM
P2
P9001
FP9002
BL +4.5V
13
13
17, 18
LCD C.B.A.
L1201
FP1201
3,4
ON: OPEN
OFF: CLOSE
LCD
OPEN/CLOSE SW
D1201
FP1201
1
FP1201
2
LCD NORMAL/
REVERSE SW
ON: REVERSE
OFF: NORMAL
FP1201
16
L1203
FP1201
17, 18
IC1201 (PWM CONTROL)
4
Q1216
7
ERROR
1
AMP
L1207
3
VCC
L1202
FP1201
19,20,21
Q1203
Q1204
Q1202
Q1205
T1202
1
2
3
4
OSC
PWM
COMPARATOR
-
+
Q1217
DRIVE
5
+
SHORT
CIRCUIT
PROTECT
2
Q1210
Q1211
Q1213
Q1212
Q1208
Q1207
Q1209
ERROR
AMP
Q1206
Q1218
Q1219
ERROR
AMP
Q1221
Q1222
D1204
8
D1205
7
6
D1203
5
Q1220
Q1214
Q1215
REG+3.5V
LCD+3.V
LCD+12V
LCD+7.5V
D1206
LCD+5V
LCD-15V
BL+4.5V

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