Brother International 8250P Service Manual - Page 181

C OV E R, T N OR, L OC K, R OM2, MT D I, V OL 3, S A MP, S OT H R, CC104, R A M U WE

Page 181 highlights

1 2 3 4 5 6 A S I C MF C 2 A +5V 74C 73B 71C RI NG TEL MU T E 76 RI NG 74 TEL 91 SEN3 93 SEN5 75 S P ON 122 P7 1 F AN1 S P ON RNG 55D 75B 75C 51C 44B 45C HAI SI MC E MR S T 94 SEN6 39 MC E 41 MR S T 65 PA3 29 P M1 30 P M2 MS I L P M1 P M2 55A 55A 55A 53B L OCK 1 1 3 PB5 18 RVDD RVDD 66B A BD 55C R1 4 1 0 1 0 0 BD C9 9 2 2 B, 2 2 D R OM2 1 3 1 E R OM2 CC1 0 4 RESI 1 2 1 R1 4 0 22K 72B 73C TL SW DAREC 90 SEN2 68 P WM 3 208 D1 5 33C 33D PCL K S DOUT 44 PCL K 46 S DOUT 31 P M3 32 P M4 P M3 P M4 55A 55A 51C 51C T CS 1 2 5 COV E R 1 2 6 P7 0 P7 4 RT CCON S0 V 19 10 RS 11C 71C ADL C 72D DAST 82 AN0 67 P WM 2 207 D1 4 206 D1 3 33D 34C SDI N CI SCL K 45 SDI N 56 S MP C 33 C MP P A C MP P B 3 4 HOOK RSEN 55C 33D 51C 53A P7 5 T NOR 1 2 7 P7 6 S OT HR 8 3 BAVDD +5B C9 8 CC1 0 4 72C DASEND 6 6 P WM 1 205 D1 2 53C C MP R A 35 C MP R A S OL 3 7 S OL 56C 51D HET H AN1 85 72A C6 3 CC1 0 4 72D 72A 72D P OL C1 T L OF EAT 88 SEN0 7 7 C1 89 SEN1 95 SEN7 204 D1 1 D1 0 2 0 3 202 D9 199 D8 CL K2 4 35C R1 1 4 L7 200 53C LL241 34C 36C C MP R B CSI P PD 36 C MP R B 42 CL K2 4 55 CSI P 47 I PD0 SCN 101 CL K DRI VE 1 0 2 VDO 9 8 L DON 9 9 SCCK DRI V SCDT L DON 53B 53B 55B 51A 51B 53C R M1 R M2 AN3 84 AN2 110 L ASP 25 R M1 26 CK3 2 S0 V 13 R1 1 0 C9 7 CC1 0 2 100 72D S0 V 71A 7 2 A, 7 3 C DPS PL S C ML H 72 DPS 73 PL S 71 C ML 198 D7 197 D6 48 I PD1 49 I PD2 50 I PD3 103 HVT P 104 HVT N 105 HVCH T ENH T ENL TAI D 51A 51A 51A 53C 53C 53C R M3 R M4 MT I 0 R M2 27 R M3 28 R M4 115 11 BACL K BAENB 1 2 S0 V 44C MI N T 40 MI N T 196 D5 195 51 I PD4 52 106 HV GZ 107 GE NZ VCL N 51A 53C 53D MT I 1 PA0 78 PA1 * R1 2 3 0 +5B 2 4 A, 2 4 A, 2 4 C R1 3 8 6 8 UCAS 6 UCAS D4 194 D3 I PD5 53 I PD6 HVCL ERASE 1 0 9 51B EL 53B 26B XSEN 1 3 4 P8 5 ( ) B 2 4 A, 2 4 B, 2 4 C 2 4 A, 2 4 A, 2 4 C 56D F ANCNT 1 2 4 P7 3 23D R A MR D ESD R1 3 7 133 EEDAT 10 7 R A MR D CAS R1 3 9 6 8 5 L CAS # 5 24A RAS3 4 RAS3 24A RAS2 3 RAS2 193 D2 192 D1 191 D0 RD 1 6 7 163 H WR 166 WR DBUS R1 3 4 1 0 RD R 1 3 5 1 0 L WR 2 2 B, 2 2 D, 2 6 A 3 5 C, 4 4 C 2 2 B, 2 6 A 3 2 B, 3 5 C TG 54 I PD7 108 HT O 58 RB 57 SH 59 CL 2 #5 24 EXVD 141 CB S ON 62 CL 1 160 HBUSY 63 T RG SEL I N 1 5 9 HT O XVDO HBUY SEL I N 51D 26A 65B 65B 26A +5V EXCS R1 2 4 2 2 K 2 2 EXCS1 * R1 2 2 22K VDD 26A +5V EXI NT R1 1 3 2 2 K 2 3 #5 EI NT 1 OUT Q2 3 B RH5 VA R1 5 6 C1 0 1 CC1 0 1 CK3 2 0 N 1 4 +5V SRAM 2 2 K S0 V 123 +5B GND 2 4 A, 2 4 B 24A RAS1 RAS0 2 RAS1 1 RAS0 111 SEN8 168 A2 0 V OL 2 75D 3 5 C, 4 3 B 32A L ED 64 PA2 201 VDD P R MI N T FLT 1 5 8 P R MI N T 157 FLT 65B 65B 34C 23D EECK 132 70 P7 2 EECK R1 1 2 S0 V 2 1 B, 2 1 D R OM1 162 R OM1 169 4 A1 9 5 R M WR R1 3 6 1 0 8 170 3 6 2 4 A, 2 4 A, 2 4 C R A M WR A1 8 190 VDD 165 VDD 156 SL CT 155 PPE SL CT PPE 65B 65B S0 V A M8 1 6 69 P WM 4 20 BKSL C1 1 2 C1 0 3 C1 1 3 C1 2 5 C1 2 0 C1 0 2 () () C9 5 XT2 N C 9 R A M U WE 17 RXT 16 REXT C- 0 0 1 R C9 6 171 2 A1 7 172 A1 6 1 173 4 A1 5 A1 4 1 7 4 3 175 2 A1 3 176 A1 2 1 DA1 11 7 7 4 7 RA1 8 68x4 5 6 7 RA2 8 6 8 X4 5 +5V CC1 0 4 x 6 147 VDD 114 VDD 97 VDD 61 VDD 43 VDD 21 VDD BUSY ACK STB DC7 DC6 DC5 DC4 153 152 161 143 144 145 146 BUSY ACK STB 65A 65A 65B +5V Q2 5 2 SC3 9 2 8 A 51B HVCR C1 4 1 CC1 0 4 R1 4 5 10K C1 1 5 CC1 0 4 R1 4 4 10K 76C 75C 55A 36C V OL 3 V OL 1 128 P7 7 120 PB6 129 CL K MT D I 1 9 2 SEN4 S A MP 1 1 2 SEN9 R1 1 1 0 S 0 V M5 V 81 AVDD C1 1 4 CC8 P CC1 2 P 178 3 6 DA1 0 148 DC3 80 CC1 0 4 179 2 DA9 7 RA3 +5V 181 1 DA8 8 68x4 S0 V 182 4 5 C1 2 3 R1 5 4 1 6 A, 2 6 A C CC1 5 4 Q1 2 1 . 5 K 3 4 C, 6 5 D DA7 183 3 6 DA6 ( 2125) 5 R1 5 5 1K 184 2 DA5 7 RA4 C1 2 4 S80942 1 RS 130 RST 185 DA4 1 8 68x4 15 GND 149 DC2 S0 V S0 V S0 V A GND ( 38 150 GND 60 GND 96 GND 119 GND 142 GND DC1 151 DC0 P8 4 1 3 5 138 CT S DCBUS 65C +5V R1 8 0 22K +5V R1 8 1 22K +5 V P2 B6 B- PH 1 CT S 4 116 TST1 79 TST2 86 TST3 87 M0 V C CC1 0 4 4 C1 2 2 R1 5 7 186 4 5 DA3 154 GND 137 RT S RT S 3 TST4 3 CC1 0 2 2 2 0 118 187 3 6 DA2 EXTL 188 2 7 RA5 DA1 S0 V R1 5 8 1M 189 DA0 1 8 68x4 ABUS 164 GND 180 GND 200 GND 139 RXD 140 TXD 136 P8 3 OP ON RX 5 TX 6 S0 V S0 V S0 V 117 EXTL 2 S0 V S0 V S0 V XT1 2 4 . 5 7 MH z S0 V PCBCH R1 0 0 R7 0 R1 6 5 ) C1 2 6 CC1 5 p C1 2 7 CC1 5 p S0 V FG FG FG S0 V RA1 2 150 x4 D7 R 4 5 D7 D6 R 3 6 D6 D5 R 2 7 D5 D D4 R 1 8 D4 D3 R 4 5 D3 D2 R 3 6 D2 D1 R 2 7 D1 DRBUS D0 R 1 8 D0 DBUS RA1 3 150 x4 D A Main PCB 1/8 1 2 3 4 5 6

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A
Main PCB
1/8
C MP R A
C MP R B
CLK24
CSI
P
I
PD1
I
PD2
P83
RVDD
P M1
P M2
P M3
P M4
C MP P A
C MP P B
S OL
DRI
VE
VDO
HVTP
HVTN
HVCH
H V GZ
HVCL
ERASE
EXVD
C B S ON
HTO
SELI
N
P R MI
NT
FLT
SLCT
BUSY
STB
ACK
CTS
RTS
TXD
RXD
48
57
82
33
34
111
24
163
160
144
145
148
149
150
151
65B
HBUY
75D
V OL 2
RSEN
H OOK
SEN6
MC E
MR S T
SDOUT
SDI
N
S MP C
ADLC
I
PD4
I
PD5
I
PD6
I
PD7
RB
SH
CL2
CL1
TRG
PA2
72A
51C
#5
94
SEN8
D3
D2
D1
D0
RD
H WR
WR
DA0
A19
A18
A17
A16
A15
DA11
DA10
DA9
DA8
DA7
DA6
DA5
DA4
DA3
DA2
D15
SEN5
S P ON
P71
D13
D12
D11
D10
D9
D8
D7
D6
D5
208
198
197
196
178
181
RI
NG
TEL
SEN2
P WM3
AN0
P WM2
P WM1
SEN0
SEN1
SEN7
DPS
PLS
C ML
MI
NT
CLK
UCAS
P73
EEDAT
LCAS
RAS3
RAS2
RAS1
RAS0
R OM1
R A M WR
R A M U WE
RXT
REXT
RST
EXTL
EXTL
112
6
124
133
67
66
17
16
130
#5
R154
1.
5K
+5V
#5
C103
XVDO
26A
179
DA1
A14
191
4
3
2
1
5
6
7
8
4
3
2
1
5
6
7
8
186
187
189
188
4
3
2
1
5
6
7
8
4
3
2
1
5
6
7
8
182
183
185
184
4
3
2
1
5
6
7
8
4
3
2
1
5
6
7
8
177
RA1
RA2
RA5
A12
A13
C122
CC102
S0V
S80942
S0V
3
2
1
Q1
195
192
R136
10
118
117
XT2
C96
C95
CC8P
S0V
C127
CC15p
R157
220
C126
CC15p
R A MR D
73C
DAREC
24A,
24B,
24C
9
7
71A
PLS
73
72A,
73C
C ML H
71
68
FANCNT
56D
ESD
23D
R137
10
R MWR
24A,
24A,
24C
8
R138
68
R A MR D
72C
DAST
72D
DASEND
24A,
24A,
24C
5
UCAS
24A,
24A,
24C
CAS
R139
68
74
71C
MU T E
91
TLSW
90
74C
72B
76
RI
NG
44C
MI
NT
40
89
T L OF
72A
C1
77
C1
72
72D
72D
DPS
EAT
95
72D
88
P OL
4
21B,
21D
R OM1
162
3
24A,
24B
RAS1
2
RAS0
1
24A
RAS2
RAS2
24A
RAS3
SEN3
141
A20
93
55D
FAN1
D4
168
R134
10
RD
167
166
R135
10
L WR
22B,
26A
35C,
43B
22B,
22D,
26A
35C,
44C
D14
175
169
170
171
172
173
176
174
207
206
205
204
199
203
202
193
194
11C
RS
122
75C
RNG
75
75B
S P ON
VDD
GN D
C102
C120
C125
C113
S0V
GN D
GN D
GN D
GN D
GN D
GN D
GN D
GN D
GN D
VDD
VDD
VDD
VDD
VDD
VDD
VDD
VDD
190
200
180
164
154
142
119
96
60
38
15
21
43
61
97
114
147
165
201
MC E
CSI
P
39
55
34C
44B
TG
LED
63
64
32A
59
62
I
PD3
HAI
SI
56
34C
58
54
53
52
51
50
49
47
36C
I
PD0
PD
132
SRAM
CI
SCLK
53C
36
C MP R B
53C
35
C MP R A
SDOUT
46
33D
PCLK
44
33C
MR S T
41
45C
PCLK
33D
SDI
N
45
37
56C
S OL
32
55A
P M4
31
55A
P M3
30
55A
P M2
29
55A
P M1
108
51D
HTO
101
53B
SCCK
102
53B
DRI
V
98
55B
SCDT
99
51A
L D ON
103
51A
TENH
104
51A
TENL
105
51A
TAI
D
106
51A
GE N Z
107
51B
VCLN
109
53B
EL
SCN
CLK
L D ON
146
157
65B
FLT
158
65B
P R MI
NT
159
65B
SELI
N
65B
SLCT
156
65B
PPE
155
65A
BUSY
153
65A
ACK
152
65B
OP ON
161
HBUSY
PPE
DC0
143
65C
DCBUS
DC7
DC6
DC5
DC4
DC3
DC2
DC1
ABUS
P84
R113
22K
135
138
137
139
140
136
+5V
CTS
RTS
RX
TX
1
4
3
5
6
2
P2
EI
NT1
PB5
126
51C
C OV E R
BD
E R OM2
P70
P74
P75
P76
127
AN1
83
53A
T N OR
AN3
85
51B
HETH
AN2
84
LASP
110
R M1
25
26
53C
R M2
R M2
27
53C
R M3
R M3
28
53C
R M4
R M4
115
53C
PA0
MT I
0
PB6
HVCR
134
26B
P85
XSEN
23
26A
EXCS1
EXI
NT
113
53B
L OC K
100
BD
131
R OM2
121
51C
RESI
125
51C
TCS
73B
TEL
22
*R123
+5V
+5V
CLK24
R114
200
42
35C
123
P72
EECK
A M8 1 6
70
78
53D
PA1
MT I
1
120
P77
69
P WM4
SEN9
C114
CC104
PA3
65
55A
MS I
L
S0V
BAVDD
18
RVDD
18
C99
CC104
RVDD
66B
S0V
RVDD
+5B
19
C98
CC104
10
RTCCON
13
CK32
BACLK
BAENB
11
12
14
CK320N
R112
+5B
20
BKSL
C101
CC101
M5 V
M0 V
AVDD
A GN D
R111
0
S0V
81
80
116
S0V
TST1
TST2
TST3
TST4
79
86
87
FG
S0V
FG
S0V
S0V
8
7
6
5
24A
RS
16A,
26A
34C,
65D
DBUS
32B,
35C
55C
33D
C-
001R
CC12P
S0V
S0V
68x4
68x4
CC104x6
0
129
SEN4
92
MT D I
1
128
76C
V OL 3
68X4
NC
R155
1K
R158
1M
(
)
S0V
53C
R M1
4
3
2
1
5
6
7
8
4
3
2
1
5
6
7
8
4
3
2
1
5
6
7
8
RA3
RA4
4
8
7
6
2
5
1
3
4
8
7
6
2
5
1
3
68x4
68x4
+5V
FG
S0V
PCBCH
B6B-
PH
S0V
+5B
RH5VA
VDD
GN D
Q2 3
(
)
*R122
22K
OU T
EECK
C97
CC102
S0V
R110
100
+5V
+5V
S0V
S A MP
+5V
26A
EXCS
+5V
R124
22K
V OL 1
S0V
C124
CC104
4
5
XT1
S OT H R
+5V
2SC3928A
51B
36C
55A
75C
23D
34C
22B,
22D
51D
55C
R140
C123
CC154
(
2125)
C112
R180
22K
R181
22K
C141
CC104
C115
CC104
R144
10K
Q2 5
R156
R141
0
R10
0
R165
R7
0
22K
22K
(
)
71C
S0V
C63
CC104
24.
5 7 MH z
S0V
(
)
S0V
L7
LL241
ASI
C MF C 2
R145
10K
STB
3
4
3
2
1
5
6
7
8
4
3
2
1
5
6
7
8
4
3
2
1
5
6
7
8
4
3
2
1
5
6
7
8
4
3
2
1
5
6
7
8
4
8
7
6
2
5
1
D7R
D6R
D5R
D4R
D3R
D2R
D1R
D0R
D7
D6
D5
D4
D3
D2
D1
D0
DBUS
DRBUS
RA13
150
x4
RA12
150
x4
A
B
1
2
3
C
D
1
2
3
5
6
A
B
C
D
6
4
4
5