Brother FAX-921 Fax Machine User Manual


 
SPO N
CI
TL O F
HO OK
CM L
DPS
PL S
TEL
RST
VO L 1 ( O D)
SEN6
SEN1
TL O F 2
SEN4
SEN5
SEN3
SEN2
I O R D
RAS1
AVDD
CM PL C
CM PTH
CM PVL
CPNN
RDA6
REF H
REF L
AG ND
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A1 0
A1 8
VDD
VDD
VDD
VDD
VDD
RNG L
T G
CL 2
CL 1
PWM CL P
RDCK1
ST 1
ST 2
HDC
DOUT
L AT C
HRAD( O D)
F O G M ( O D )
EEDAT
PCL K
SDI N
SDOUT
RAS 0
CAS
M EM RD
M EM WR
ROM C
T X D
RXD
RT S
CRXD
EAT
RT C CON
RVDD
DM K
AM K
DM T
AM T
C3
C4
C5
M UT
D0
D1
D2
D3
D4
D5
D6
D7
VSS
VSS
VSS
VSS
VSS
VSS
VSS
# 5
T 7D9 6
45
70
74
83
84
85
13 7
13 8
13 9
12 1
46
71
98
97
12 7
11 9
10 0
10 1
12 0
14 0
99
14 1
10 2
10 3
12 4
12 5
13 4
95
94
92
88
8
10
9
15
11
25
37
32
34
33
36
38
39
40
41
1
55
64
73
91
10 7
13 6
2
18
54
72
12 6
75
76
77
78
79
80
81
82
11 8
11 0
11 1
11 2
11 3
11 4
11 5
10 5
48
49
50
51
52
53
56
57
58
59
60
61
62
63
65
66
67
68
69
42
43
27
28
3
4
5
6
7
M BUS 23 C
ABUS 2 6 E
T B US 48 B
G ND
G ND
+ 5V
M UT E
D0
D1
D2
D3
D4
D5
D6
D7
TST 2
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A1 0
A1 1
A1 2
A1 3
A1 4
A1 8
T S T 1
RVDD
2 6 D , 27 A RM RD
4 6 D RNG L
3 2 A T G
3 2 E S T1
3 2 E S T2
4 2 F DASND
+ 5V
4 2F ADL C
3 2 D CP3 I
4 3 A TE LL
4 6 E VO L 1
3 7 A FS E N
3 7 D CSEN
4 2 E E A T
4 5 A H RAD
4 5 B FOGM
VO L 3 ( O D)
14 4
4 2 F C I
4 2 F TL O 2
XT 1
C- 00 1 R
M M 2
SO L
PM 2
PM 3
M TI 1
16
20
21
24
RST L 1 4A
M TI 1
M M 3
87
12 2
RI N G
C5 6
CC1 5 P
C6 7
CC1 5 P
L 3
*
VDD
90
VDD
10 9
31
AG ND VSS
11 6
C4
C3
APDM DT
DPDM DT
APDM CK
DPDM CKPWM SND
PWM REC
13 3
12 8
96
13 1
13 2
13 0
12 9
+ 25 V
G ND
C5 1
CC1 0 4
R5 7
7 5 K
R5 8
1 0 KF
C6 5
CC1 0 4
PANEL
P9
G ND
1
2
3
4
7
R3 8 1 00
C2 6
*
# 5
T 7D9 6
G ND
C5
REX T
11 7
30
10 6
G ND
XT 2
2 0 . 7 3 6M HZ
C4 3
CC1 0 P
C4 4
CC2 0 P
M CL K
10 8
M EXT L
+ 5V
G ND
Q 5
RH5 VA4 3
VCC
O UT
G ND
RST L 1 6A , 4 7 B
R6 2
1 . 5K
C4 0
C4 9
CC1 0 4
93
DBUS 26 E
L 5V
R5 2
R5 1
R5 3
2 0 0X3
SO L 2 3 F
C5 3
CC1 0 4
4 7 E SPO N
4 3 E P LS
3 7 C RI BN
4 6 E VO L 3
3 5 E PWO N
3 2 E D O UT
13 5
EECL K
R3 1 4 7 0
C2 5
CC1 0 1
C7 8
3 2 F L AT C
RX T
29
R5 4
3 7 C REAR
3 7 E H O OK
R6 4 *
R7 0 10 0
2 6D RAS
2 6D CAS
R7 1 10 0
2 5 B EPCK
G ND
4 2 E R DPS
3 5F , 43 C C M L H
L 5 V
L 1 2 L1 0 2 B
G ND FG
TXD
RXD
CT S
RT S
CRXD
+ 5V
G ND
R6 1
7 5 F
C5 0
CC1 0 4
R5 9
7 5 F
R6 0
1 0 0F
3 2 E HDC
3 3 C CPWM
2 5 B EPDO
4 5 E R NGO
2 6 D RM WE
2 7 B R O M C
C2 8
*
C3 9
4 1 F DAST
R8 8
RV D D
+ 5V
D1
M A7 0 0
R8 1
1 K
G ND
C6 8
CC1 0 4
G ND
C3
A1 5
A1 6
A1 7
89
DI N3 2 E DI N
47
I O WR
3 2 A RB
RDCK2
12
3 3 C CL M P RDCL P
13
PWM L ED
14
A1 1
A1 2
A1 3
A1 4
A1 5
A1 6
A1 7
PM 4
22
M M 4
M TI 0
23
M TI 0
CT S
4 2 D O T O
12 3
O T O
PWO N
PI O 5
PM 1
17
M M 1
CK1 HZ
26
M TX L
3 2B VI D
35
CM PRD
VSS
44
VSS
19
86
PI O 6
10 4
PI O 7
14 3
PWM 4
+ 5V
P6
B8 B- P H
WHI TE
2
5
PCI
4
8
7
1
6
3
G ND
1 6 B P B US
CRXD
RT S
TX D
RXD
CT S
5
FRNT
3 7 B R SEN
PBUS 1 7 B
C2 7
*
+ 5V
R3 9
1 0 0K
L 10 L 1 02 B
6
+ 25 V
L 1 1
*
4 6 E VO L 2
14 2
VO L 2 ( O D)
C4 8
CC1 0 4
G ND
G ND
C4 5
CC1 0 4
4 3 D DAREC
R5 5 1 0 K
4 2 F TL O F
C3 8
CC1 0 4
C4 1
CC1 0 4
C4 2
CC1 0 4
C4 6
CC1 0 4
C4 7
CC1 0 4
C5 2
CC1 0 4
C5 4
CC1 0 4
C6 4
CC1 0 4
G ND
C5 5
CC1 0 4
3 3 B LI G T
R6 3
1 0 K
R5 6
1 5 0
G ND
R9 0
*
R3 7 2 7 0
L 5 L1 0 2B
L 8 L1 0 2B
L 6 L1 0 2B
L 7 L1 0 2B
L 9 L1 0 2B
R9 1
1 5 0
R9 3 10 0
R9 2 10 0
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 1/5
(FAX750/FAX770/FAX-910/
FAX-920/FAX-921/MFC-925)