Brother International IntelliFax-3550 Service Manual - Page 171

1 2 3 4 5 6 C6 3 C2 9 C2 7 C1 9 C5 4 ( C 2 3 ) ( C 2 2 ) ( C 2 1 ) ( C 2 0 ) ( C 2 4 ) () () 74C RI NGO 76 RI NG 93 SEN5 T ADH 74B 55C HOOK 94 SEN6 65 PA3 FAN 51C 73B TEL 74 TEL 75 S P ON MS I L 53C 47A MC E 39 MC E 29 P M1 P M1 53B L OCK 1 1 3 A B 73C 73B 72C 71C 71D 72D 72D MU T E HSPL Y DAREC ADL C DAST DASEND P OL 91 SEN3 90 SEN2 68 P WM 3 82 AN0 67 P WM 2 66 P WM 1 88 SEN0 122 P7 1 208 D1 5 207 D1 4 206 D1 3 205 D1 2 204 D1 1 C1 72A 7 7 C1 D1 0 2 0 3 72A 71D 71D 71A 7 2 A, 7 3 B T L OF EAT DPS PL S C ML H 89 SEN1 95 SEN7 72 DPS 73 PL S 71 C ML 202 D9 199 D8 198 D7 197 D6 46B MI N T 40 MI N T 196 D5 2 4 A, 2 4 C, 2 5 A R1 1 6 1 0 0 UCAS 6 UCAS 2 4 A, 2 4 C, 2 5 A 2 4 A, 2 4 C, 2 5 A 23D 23D R A MR D CAS R1 2 1 1 0 0 EECK ESD R1 2 0 124 P7 3 133 EEDAT 10 7 R A MR D 5 L CAS # 1 R1 1 2 25A 25A RAS3 RAS2 4 RAS3 3 RAS2 195 D4 194 D3 193 D2 192 D1 191 D0 RD 1 6 7 163 H WR 166 WR t o ROM 2 2 D t o FL ASH 2 2 B 2 4 C, 2 5 A 24C RAS1 RAS0 2 RAS1 1 RAS0 111 SEN8 168 A2 0 RNG 75C R1 9 1 0 RD R1 8 4 7 L WR R2 9 2 2 K +5V 47A 33D MR S T PCL K 41 MR S T 44 PCL K 30 P M2 31 P M3 33D S DOUT 46 S DOUT 32 P M4 33D SDI N 45 SDI N 33 C MP P A 35B S MP C 56 S MP C C MP P B 3 4 55B C MP R A 35 C MP R A S OL 3 7 35C CL K2 4 R5 4 55B C MP R B R2 0 1 200 34C CSI P L L 2 4 1 36 C MP R B 42 CL K2 4 55 CSI P SCN CL K DRI VE VDO 101 102 98 PD 36C 47 I PD0 L DON 9 9 48 I PD1 103 HVT P 49 I PD2 HVT N 1 0 4 50 I PD3 105 HVCH 51 I PD4 106 HV GZ 52 I PD5 107 HVCL 53 I PD6 ERASE 1 0 9 54 I PD7 108 HT O DBUS 2 1 B, 2 2 D, 2 6 A 3 5 C, 4 5 B 2 2 B, 2 6 A 3 5 C, 4 5 B 32A 32B 32B 32B 3 2 B, 3 5 C 32A RB SH CL 2 CL 1 TG L ED 58 RB 57 SH 59 CL 2 62 CL 1 63 T RG 64 PA2 #1 24 EXVD 141 CB S ON 160 HBUSY SEL I N 1 5 9 P R MI N T 1 5 8 201 VDD 157 FLT P M2 P M3 P M4 FSEN RSEN S OL SCCK DRI V SCDT L DON T ENH T ENL TAI D GE NZ VCL N EL HT ON XVDO HBUY SEL I N P R MI N T FLT 53B 53B 53B 33C 33C 54C 51A 51A 51A 51A 51B 51B 51B 51C 51C 51C 53A 26A 64B 64A 64A 64A t o ROM 2 2 D t o FL ASH 2 2 B R5 2 0 R1 0 2 51A 26A 26A 51D 51D 51D 51D 51D 55B 55B 55B 55B 55C 55C 26B PB5 R2 8 0 BD 100 BD R OM2 1 3 1 E R OM2 RESI 1 2 1 P7 0 T CS 1 2 5 COV E R 1 2 6 P7 4 P7 5 T NOR 1 2 7 P7 6 S OT H2 8 3 AN1 HET H 85 AN3 84 AN2 110 L ASP R M1 25 R M1 R M2 26 R M2 R M3 27 R M3 R M4 28 R M4 MT I 0 1 1 5 PA0 MT I 1 78 PA1 XSEN 1 3 4 P8 5 26A +5V EXCS R3 2 2 2 K 22 EXCS1 18 RVDD RVDD C6 2 CC1 0 4 66B S0 V 19 RS RT CCON 10 BAVDD +5B C6 4 CC1 0 4 CK3 2 S0 V 13 R5 3 1 0 0 C6 1 CC1 0 2 BACL K 1 1 12 BAENB S0 V * R3 4 0 +5B * R1 9 7 22K VDD +5V 26A EXI NT R3 3 2 2 K 23 #1 EI NT 1 +5V C3 0 CC1 0 1 CK3 2 0 N 1 4 R1 9 8 2 2 K S0 V OUT * RH5 VA +5B 11C Q7 A B R1 1 5 0 R OM1 2 4 A, 2 4 C, 2 5 A R M WR R5 0 R1 1 4 162 R OM1 68 8 R A M WR N C 9 R A M U WE 17 RXT 16 REXT 169 1 A1 9 170 2 A1 8 171 4 A1 7 172 A1 6 3 173 4 A1 5 8 7 5 RA1 0 6 100x4 5 190 VDD 165 VDD 147 VDD 114 VDD 97 VDD SL CT PPE BUSY ACK STB 156 155 153 152 161 SL CT PPE BUSY ACK STB 64A 64A 64A 64A 64B 23D 71B SA1 2 TL SW S0 V 123 P7 2 132 EECK 70 A M8 1 6 69 P WM 4 20 BKSL * R4 8 GND S0 V C2 5 0 XT2 Q8 3 PST5 9 3 1 C5 6 CC1 0 P C- 0 0 1 R C5 5 CC1 0 P +5V S0 V R2 5 1 6 A, 2 6 A 1. 5K 3 4 C, 6 6 D R1 9 4 RS 1K 130 RST A1 4 1 7 4 3 175 2 A1 3 176 A1 2 1 DA1 11 7 7 4 178 3 DA1 0 179 2 DA9 181 DA8 1 182 4 DA7 183 3 DA6 184 2 DA5 185 DA4 1 6 7 RA1 1 8 1 0 0 X4 5 6 7 RA1 8 68x4 5 6 7 RA2 8 8x4 +5V CC1 0 4 x 5 61 VDD 43 VDD 21 VDD 15 GND 38 GND 60 GND 96 GND 119 GND 142 GND DC7 DC6 DC5 DC4 DC3 DC2 DC1 DC0 143 144 145 146 148 149 150 151 P8 4 1 3 5 138 CT S DCBUS 64B R2 3 1 . 5 K 56C 51C R1 9 5 22K +5V +5V B L M1 1 A 2 0 R2 1 3 8 CT S 2 V RCON 1 2 8 P7 7 HAI SI 1 2 0 PB6 129 CL K MT D I 1 9 2 SEN4 S A MP 1 1 2 SEN9 R4 9 0 S 0 V M5 V 81 AVDD 80 A GND C2 8 CC1 0 4 116 M0 V CC1 0 4 C 2 4 S0 V C2 6 CC1 0 2 R3 8 220 S0 V 24. 54 R1 9 3 1M XT1 118 EXTL 117 EXTL 186 4 DA3 187 3 DA2 188 2 DA1 189 DA0 1 5 6 7 RA3 8 68x4 ABUS 154 GND 164 GND 180 GND 200 GND 137 RT S 139 RXD 140 TXD R 2 2 B L M1 1 A 2 0 R2 1 1 . 5 K R2 1 2 1 . 5 K R 2 0 B L M1 1 A 2 0 RT S RX TX 3 P1 4 6 TST1 79 TST2 86 TST3 87 TST4 C 136 P8 3 R2 4 1 . 5 K R2 1 1 1 . 5 K M/ L S E N 1 S0 V S0 V MH z C3 3 15p C3 2 15p S0 V R2 7 22K R1 9 6 22K 5 7 2 9 0 A- 8 8 S0 V S0 V S0 V +5V +5V S0 V 8 P MOD U R1 8 6 B L M1 1 A 2 0 * R5 0 * R1 0 8 S0 V FG FG D D A MAIN 1/8 MFC4550plus/7650MC 1 2 3 4 5 6