Brother FAX-921 Fax Machine User Manual


 
+ 25 V
+ 5V
RB 1 2 E
L AT C 1 6 D
HRL Y 3 4 E
CP3 I 1 2F
HDC 1 2 D
G ND
+ 5V
CI S
P6
B7 B- P H
1
2
8
4
3
ST 1 12 D
T M
3
1 0
P1 1
B1 0 B- PH
R8 9
3 3 K F
R9 0
1 0 0KF
TG 1 2E
+ 5V
G ND
R5 V
7
VI D 1 2 E
Q 6
2 SC3 92 8
G ND
Q 8
KRC1 0 7 S
R0 V
Q 1
2 SD1 8 5 8
R5
1 W
3 0
CPW M 1 6D
R1 0 6
2 . 2K
R0 V
R5 V
R1 0 7
1 0 K
R5 V
L I G T 1 1 C
R5 V
R0 V6
5
C9 1
CC1 0 4
C7 5
CC1 0 1
9
5
ST 2 12 D
DO UT 12 E
DI N 1 2 E
7
R8 8 10 0
R8 7 20 0
C7 6
*
6
4
2
1
G ND
R0 V
R9 1
1 0 KF
Q 7
2 SK1 3 9 9
Q 9
2 SC3 9 2 8
C5 1 6 V/ 1 0
R1 1 0 4 7 0
R1 1 1 2 7 0
R5 V
CL M P 1 6 D
R1 0 8 2 2 K
C9 0
CC1 0 4
R0 V
RST H VDD
VDD
VDD
TEM P
ATA P
PO RT 2
PO RT 3
T R I G
DGND
M T P
SD/ PD7
PD6
PD5
PD1
D0
D1
D2
D3
D4
D5
D6
D7
A0
A2
A3
A4
AG ND
AG ND
AVDD
42
40
41
35
34
31
43
10
24
56
9
17
26
49
64
47
48
50
54
59
36
46
20
18
16
15
8
7
6
5
4
3
2
1
R0 V
R5 V
R0 V
# 5
DBUS 14 E
11
12
A5
A6
A7
A8
14
13
19
A1
PD4
PD3
PD2
51
52
53
SAM P
RS
33
62
SH
CL K1
63
61
CL K2
60
PD0
55
DA C K
57
DREQ
58
RDAT 1 2E
+ 5V
30
29
28
27
23
22
21
25
32
I C L K
I O CS
M CS
I O E
M E
RD
WR
CL KI N
RES E T
1 6D SRAM
39
RST L
AI N
38
45
44
PO RT 0
PO RT 1
37
ADREF L
R0 V
C1 0 1C1 0 0
C1 0 3
C1 0 4C4
R1 2 2
R1 2 1
C1 0 5
A8
RD
WR
CK1 6
D7
D0
D1
D2
D3
D4
D5
D6
DGND
DGND
DGND
DGND
G ND
M R E Q
I O R Q
R5 V
1 7D ABUS
G ND
A5
A6
A7
A4
A0
A2
A3
A1
1 4A R STL
1 7C RBUS
1 2 E TG
1 2 E SM C
1 2E S YCS
3 2F H RL Y
+ 5V
PWO N 1 6D
CM L H 1 6 C
SW1
SPPB 51
+ 25 V
PI 2
RPI - 44 1
# 7
UM G 5 N
1
3
6
4
2
R1 1 3
1 00 K
G ND
P1
B4 B- P H
SENSOR
1
3
2
G ND
1 2D F SEN
1 6C HOO K
4 2E C M L L
R4 9
4 . 7K
+ 5V
G ND
CX2
C4 5
*
G ND
4
1 2D RSEN
1 2D REAR
+ 5V
1 2D RI BN
G ND
G ND
C9 3
*
PI 1
RPI - 44 1
G ND
P9
B2 B- P H
RED
1
HOOK
2
+ 5V
1 2D CSEN
G ND
C9 9
*
R1 1 4
1 00 K
R1 1 2
1 00 K
R1 2 0
4 . 7K
R1 2 6
1 00 K
+ 5V
G ND
G ND
+ 5V
L 1 6 L1 0 2 B
C9 2
*
R1 0 9
1 2 3 4 5 6 7 8
21 3 4 5 6 7 8
A
B
C
D
E
F
A
B
C
D
E
F
A
Main PCB 3/6
(FAX870MC/MFC970MC/FAX-930/
FAX-931)