Toshiba 1550 Service Manual page 171

Logic Circuit (PWA-F-LGC) 4/8
1
A
RN1401
4700
EXT-H/L 1
[EXT-H/L]
4700
B
4700
EXTON 1
[EXTON]
4700
RN2401
C
RN1401
D
4700
OPT-H/L 1
[OPT-H/L]
4700
4700
OPTON 1
[OPTON]
E
4700
RN2401
F
1
1550/1560 CIRCUIT DIAGRAMS
2 3
+24V
R111
1/10W4700
R2
F-1W56
2
R110 1/10W10K
3 1 2 1 Q17
RTP
2SA1313Y
EXT-FAN1
Q15 3
2
D10
EXT-FAN2
1 DUMMY 2
1SS193 E5
GND
+24V
DG
+5VSW
D11
1SS193
2
Q18 EXT-F-ON
2
3 R109 1/10W1000 1 Q16
1 RTP 2
2SC2873Y
3
R112
1/10W4700
DG
+24V
R104
1/10W4700
R3
F-1W56
2
R103 1/10W10K
3 1 RTP 2 1 Q14
2SA1313Y
OPT-FAN-R
Q13 3
2
D9
1 DUMMY 2 OPT-FAN-F
1SS193 E3
GND
+24V
DG
+5VSW
D8
1SS193
2
Q12
OPT-F-ON
2
R100
3 1/10W1000 1 Q11
1 2
RTP
2SC2873Y
3
R101
1/10W4700
DG
2 3
HINT
How to search for where a signal in a
circuit diagram has jumped to.
4 5
+5VSW
4700
2
MRR-CHG 1 Q10 RN1401
[MRR-CHG]
4700
4700 3 1
[EXT-FAN1]
RN2401
4700
[EXT-FAN2]
+5VSW
[EXT-F-ON]
4700
2
TNRMOT 1 Q20
[TNRMOT]
R163
4700 3
RN2401
ATS-VIN
[ATS-VIN]
[OPT-FAN-R]
R114
[OPT-FAN-F]
ATSVREF
[ATSVREF]
R113
1 RTP 2
1/10W10K
[OPT-F-ON]
GND
4 5
6 7
+24V
R82
1/10W4700
2
R83
3 1 RTP 2 1 Q6
2SA1313Y
MRR24V
Q7 3 [MRR24V]
1/10W10K
2
D6
1SS193
GND
DG
+24V
D13
1SS193
TNR-MOT
2 [TNR-MOT]
1/10W1000
1 2 1 Q19
RTP
2SC2873Y
3
R162
1/10W4700
DG
+24V
8
R115 1/10W10K 358M
1 2 3
RTP
1 ATSVIN
[ATSVIN]
2
IC1
1
C53
4
CC0.1/50
2 C
1/10W15K
1 RTP 2
+24V
DG
8
358M
5
ATS-VREF
7
[ATS-VREF]
6
IC1
4
DG
6 7
8
A
B
C
D
E
F
4
8
8
14 - 4 Mar. 1998 © TOSHIBA