Toshiba 1550 Service Manual page 175

Logic Circuit (PWA-F-LGC) 8/8
1
A
53313-24V
J10 1
2
3
4
5
6
7
8
9
B
10
11
12
13
14
15
16
17
18
19
20
21
22
23
C
24
17513218V
J6 1
2
3
4
5
D
6
7
8
9
10
11
12
13
14
15
16
17
18
E
F
1
1550/1560 CIRCUIT DIAGRAMS
2 3
VDD +24V
53324-9
MOT-FG
[MOT-FG] J1 1
2
MOT-DIR
[MOT-DIR] 3
PLL-OK
[PLL-OK] 4
MOT-BRK
[MOT-BRK] 5
MOT-ON
[MOT-ON] 6
7
8
EXP-PWM
[EXP-PWM] 9
EXP-ON
[EXP-ON]
SP-VREF 53324-10
[SP-VREF]
HVT-SP-ON
[HVT-SP-ON]
J2 1
HVT-GB-ON
[HVT-GB-ON]
2
TR-VREF
[TR-VREF]
3
HVT-TR-ON
[HVT-TR-ON]
4
5
6
G-VREF
[G-VREF]
7
HVT-M-ON
[HVT-M-ON]
8
M-VREF
[M-VREF]
9
10
GND DG
+24V
+5VSW VDD +24V
DR-SW2
[DR-SW2]
EMP-SW2
[EMP-SW2]
FED-SW2
[FED-SW2]
DG
VDD
MOT-ON2
[MOT-ON2]
CST2
[CST2]
SIZ10
[SIZ10]
SIZ11
[SIZ11]
SIZ12
[SIZ12]
SIZ13
[SIZ13]
GND
FED-CLT2
[FED-CLT2]
PKUP-CLT2
[PKUP-CLT2]
RGT-CLT2
[RGT-CLT2]
GND DG
2 3
HINT
How to search for where a signal in a
circuit diagram has jumped to.
4 5
VDD
SACK
[SACK]
S-REQ
[S-REQ]
REQ-S
[REQ-S] 1p
S-CNT
[S-CNT]
SRXD 1
[SRXD] C59
CC0.1/25 CC0.1/25
2 C
STXD
[STXD]
ACKB-S
[ACKB-S]
GND
GND
VDD
DFACK
[DFACK]
90p
DF-REQ
[DF-REQ]
REQ-DF
[REQ-DF]
1
C61
DF-CNT
[DF-CNT]
CC0.1/25 CC0.1/25
2 C
DFRXD
[DFRXD]
DFTXD
[DFTXD]
ACKB-DF
[ACKB-DF] GND
GND VDD
14p
1 1 1
C6 C66
C16
CC0.1/50 CE47/35 CC0.1/25 CC0.1/25
2 C 2 C
2
7p
GND
VDD
IC-
1
1
C38 C4
MPU
CC0.1/25 CE47/16
2 C 2
36p
1
C29
CC0.1/25 CC0.1/25
2 C
GND
7407M
3 4
IC18
7407M
5 6
IC18
GND
4 5
6 7
10p 20p 40p 47p 67p
1 1 1 1 1
C45 C60 C50 C51 C46
CC0.1/25 CC0.1/25 CC0.1/25 CC0.1/25
2 C 2 C 2 C 2 C 2 C
100p 110p 120p 130p 150p
1 1 1 1 1
C47 C56 C43 C44 C62
CC0.1/25 CC0.1/25 CC0.1/25 CC0.1/25
2 C 2 C 2 C 2 C 2 C
14p 14p 14p 14p 14p
1 1 1 1 1
C35 C30 C36 C68 C9
CC0.1/25 CC0.1/25 CC0.1/25 CC0.1/25
2 C 2 C 2 C 2 C 2 C
7p 7p 7p 7p 7p
MPU
77p
1 1 1 1 1
C18 C15 C48 C65 C63
CC0.1/25 CC0.1/25 CC0.1/25 CC0.1/25
2 C 2 C 2 C 2 C 2 C
6 7
8
A
81p
1
C42
CC0.1/25
2 C
B
C
14p
1
C20
CC0.1/25
2 C
7p
D
1
C57
CC0.1/25
2 C
E
F
8
8
8
14 - 8 Mar. 1998 © TOSHIBA