Brother FAX-921 Fax Machine User Manual


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PI O 1
SEO N( O D )
SPSL ( SM C)
CI
TL O F
HO OK
STD
CM L
DPS
PL S
L N CR( C O M P)
TEL
RST
SO L ( OD)
SEN2
SEN3
SEN4
SEN5
SEN6
SEN7
SEN8
EXT L
XTL
I O R D
I O WE
PI O 2
EI T1
AVDD
CP1 I
CP3 I
CP4 I
CPNN
RDA6
REF H
REF L
AVDD
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A1 0
A1 1
VDD
VDD
VDD
VDD
VDD
VDD
PI O 5
E2 CS
RDAT
T G
DI F
CL 1
CL 2
RB
RDA6 1
ST 1
ST 2
HDC
DI N
DOUT
RM 1
CT XD
L I G T( PWM )
PI O 6
PI O 4 ( OD)
PI O 3 ( S RA M)
P0 3 ( OD)
PCL K
SDOUT
RAS 0
CAS
RM RD
RM WE
ROM C
CRXD
CKS
T X D
RXD
CT S
PWO N
RT C CON
RVDD
DM T
DM K
ADM D
AAM D
C0
C1
C2
AM UT
D0
D1
D2
D3
D4
D5
D6
D7
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
VSS
# 8
T 7D9 8
44
14 3
14 1
70
75
12 4
12 3
12 2
17 7
17 6
17 5
12 1
18 4
16 6
16 7
18 3
88
19 3
19 4
19 2
19 5
18 7
18 8
18 9
57
19 1
80
10 7
82
83
18
17
20 8
23
20
20 4
26
20 3
10 3
69
41
10 8
18 6
92
91
94
90
10 2
10 4
10 1
98
95
10 0
52
18 2
51
56
55
54
53
50
49
48
58
15
38
60
81
96
10 5
11 9
14 2
10
43
97
11 4
13 2
20 1
12 7
12 8
12 9
13 0
13 1
13 3
13 4
13 5
13
12
11
16
14
6
5
13 6
13 7
13 8
13 9
14 8
14 9
15 0
15 1
15 2
15 3
15 4
15 5
15 7
15 8
15 9
16 0
16 1
16 2
16 3
45
46
16 9
17 1
17 0
16 8
17 2
17 3
17 4
12 5
12 6
14 5
14 6
14 0
14 4
64
61
20 2
19 9
19 6
19 7
19 8
ABUS 2 6 B, 3 4D
T B US 48 A, 5 8 D
G ND
G ND
AM UT E
DA1
DA2
DA3
DA4
DA5
DA6
DA7
DA8
DA9
D0 0
D0 1
D0 2
D0 3
D0 4
D0 5
D0 6
D0 7
TST B
I N T
BSRQ
BSAK
NM I
WAI T
RF S H
M 1
I O R Q
M R E Q
RD
WR
CK1 6
CK8 M
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A1 0
A1 1
A1 2
A1 3
A1 4
A1 5
M A1 6
M A1 7
M A1 8
T S T A
+ 5B
2 7 B R M RD
4 6 D RNG L
3 3 C CL M P
3 2 A , 3 4C T G
3 2 E S T1
3 2 E S T2
4 1 F DAST
E5 V
3 2B VI D
3 2 D CP3 I
4 3 A TE LL
1 6 B PCL K
4 2 F TL O F 2
3 7 B FS E N
3 7 D CSEN
4 1 E E A T
4 2 D O T O
2 5 B EPCK
SPO N
40
E1 CS
10 6
4 2 F TL O F
XT 1
CST 16 M XW
XT 3
C- 00 1 R
O DPI O 0
O DPI O 1
O DPI O 2
F C S2
17 8
17 9
18 0
37
RST L 1 4A
2 3 F SO L RM 3
28
RM 4
29
39
RI N G
C6 2
CC1 0 4
C7 0
CC1 5 P
L 1 0
C8 4
CC1 0 4
C5 5
CC1 0 4
C5 6
CC1 0 4
C6 0
CC1 0 4
89
PO 1
VDD
14 7
VDD
16 5
47
AG ND VSS
15 6
PO 2
M O NM DCK
M I O 3
M I O 1 1
M VSS
DA0
C1
C2
AAPDM D
ADP D M D
DPDM CK
DPDM DT
M I O 0 ( PW M )
M I O 1 ( PW M )
18 5
76
77
78
79
30
31
32
10 9
11 0
11 1
11 2
11 3
11 5
11 6
11 7
11 8
12 0
C6 8
CC1 0 4
C6 7
CC1 0 4
PANEL
P1 3 1/ 2
+ 5V
G ND
1
2
4
6
5
R1 3 8 4 7 0
# 8
T 7D9 8
E0 V
C0
REX T
4
62
DAB U S
2 6 B, 2 5 E
DA0
DA4
DA5
DA6
DA7
DA8
DA9
20 7
G ND
XT 2
D1 4 . 4 M Hz
R6 8
4 7 0
C8 2
CC2 7 P
C5 4
CC2 7 P
M TX L
20 6
M EXT L
G ND
Q 5
RH5 VA4 3
VCC
O UT
G ND
RST L 1 6A , 1 6 B, 3 4 D , 4 7B , 57 E
DA3
DA2
DA1
R1 0 4
1 . 5K
C8 8
CC1 0 4
C8 9
CC1 0 4
C6 6
CC1 0 4
93
2 3 D M TI 0
DBUS 25 E, 3 6 D
R2 2
2 0 0
R2 4
C6 1
CC1 0 4
E5 V
G ND
4 3 B TA D H
4 2 E P LS
G ND
3 7 B R SEN
E0 V
3 3 C CPWM
3 2 F L AT C
3 5 E PWO N
3 6 C RDAT
27
RM 2
R4 3 2 70
3 4 C SM C
RX T
63
R1 3 0
R7 3 1 0 k
19
M I O 2 ( PW M )
3 7 C REAR
3 7 E H O OK
R1 0 51 0 0
2 5C RAS
2 5C CAS
R8 2 10 0
4 1 E R DPS
3 5 F, 4 2B CM L H
L 5 V
G ND FG
E0 V
R8 0
7 5 F
C6 5
CC1 0 4
R7 9
1 0 0F
3 2 E HDC
2 3 D M TI 1
3 2 A RB
3 4 C SRAM
4 6 E SPO N
2 5 C BARM RD
16 4
20 0
VSS
VDD
19 0
AG ND
59
C5
3
2
1
C4
C3
C5
C4
C3
1 4 A R ST L
4 6 E VO L 1
1 6 B SDOUT
1 2 B SDI N
1 2 B PCL K
1 2 B SDOUT
APDM DT
APDM CK
AM K
AM T
9
8
M UT E
7
M UT
R7 0
99
CL B
22
M I O 5
24
M I O 1 2
G ND
21
M I O 4
3 7 C RI BN
4 5 D HAF H
4 4 D T X SL
SDI N
2 5 C BARM WE
73
BAENB
66
CK3 2
68
BAKCL K
74
BAVDD
65
BAKSEL
72
BARM RD
25
M I O 1 3
20 5
M VDD
L 5V
RXD
RBUS 34 D
TXD
M M 1
M M 2
M M 3
M M 4
84
85
86
87
WR
CT S
71
BARM WE
+ 5V
O DPI O 3
18 1
O DPI O 4
42
F D CL K
33
F D O UT
34
F D I N
35
F C S1
36
67
CK3 2 O N
2 7 B R O M C
4 2 F ADL C
+ 25 V
G ND
R8 3
7 5 K
R8 1
1 0 KF
C7 2
VO L 2 4 6 E
CRXD
I O R Q
CK1 6
RD
PBUS 5 6 B
M R E Q
R1 0 2
4 5 A H RAD
C8 3
CC1 0 4
3 2 E D O UT
3 4 C SYCS
3 2 E DI N
L 5 V
G ND
R1 0 3 1 0 K
R6 9
R1 2 7 1 M
R1 1 8
2 00
RA2
2 00
L 5 V
G ND
+ 5V
R7 7 10 0
G ND
C6 4
CC1 0 4
4 5 E R NGO
RA1
2 00
C5 9
CC1 0 4
C1 1 1
C8 5
CC1 0 4
C8 6
CC1 0 4
L 1 5 L1 0 2 B
E5 V
R7 6
7 5 F
2 0 0
3 0 0
3 0 0
+ 5B
G ND
+ 25 V
C4 1
*
C1 0 9
CC1 0 4
4 6 E VO L 3
C7 1
CC1 0 P
M M 3
M M 2
M M 4
M M 1
M BUS 23 C
CKS
G ND
2 5 B EPDO
4 2 F C I
L 5 V
+ 5B
3 1 6 B SDI N
C3 9
CC1 0 1
C8 7
CC1 0 4
G ND
C6 3
CC1 0 2 B
L 1 2
0
L 1 1
E0 V
C6 9
CC1 0 4
L 9
+ 5V
C4 0
*
R1 0 1 *
G ND
R1 1 9 2 0 0
3 3 A LI G T
4 3 D DAREC
R7 4 1 0 K
4 1 F DASND
R7 1 1 0 k
C5 7
G ND
C5 8
CC1 0 4
R1 2 8 1 0 k
R7 5 1 0k
R1 2 9 1 0 k
+ 5V
R1 3 7
*
+ 5V
R4 4 0
R7 2
*
1 5 P 1 5 P
R7 8
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 1/6
(FAX870MC/MFC970MC/FAX-930/
FAX-931)
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