Brother International IntelliFax-3550 Service Manual - Page 175

1 2 3 4 5 6 P1 3 CHUKEI +24V 9B 15A S0 V C3 4 CC1 0 3 +5V R1 9 2 4. 7K L OCK 2B 5B R0 V Q1 A SCCK 1 U MG5 N 5 14A SCCKL 4A L VPS +5V 4 A DRI V 3 14A 4 DRI VL 5A +24V 5 S0 V 3 S0 V 2 4 RET 2 () () () 14B L DON 14B T ENH 14B 2 R2 0 3 S C D T B L M1 1 A 2 0 C8 8 R8 5 1. 5K 4B 1 5 A, 2 6 A Q1 0 DT C1 1 4 YK 3 2 R4 5 S0 V B L M1 1 A 2 0 +5V S0 V +5 V C8 7 CC1 0 1 R8 3 BD 100 C3 6 CC1 0 1 R8 4 22K S0 V 3A 6A T ENSHAHL 11B 1 B Q9 14B T ENL DT C1 1 4 YK 3 2 T ENSHAL L 8A 1 14B TAI D T AI DENL 12B 14B GE NZ Q1 5 DT C1 1 4 YK 3 2 1 GE NZ OL 8B +5V 14A R1 4 7 1 KF HT ON R1 5 7 1 . 8 KF 51D HET H S0 V R1 7 0 75K #19 PC3 9 3 3 + 1 2 +5V 8 5 + 7 64 S0 V +5V R1 4 8 1. 5K C1 2 6 CC1 0 4 +5V 12A 14A 14A 14A MS I L 14A MT D I 1 +5V C1 1 1 104 S0 V 7 21 P M1 6 VCC VCC 9 I N1 01 P M3 5 I N2 11 02 P M2 23 I N3 15 03 P M4 22 #16 19 I N4 04 4 I0 8 V mA 24 I1 20 V mB C1 1 2 2 4 RET 3 2 1 +24V 1 Q2 1 DT C1 1 4 YK P7 B5 B- EH S0 V C1 1 9 CC1 0 4 +5V 8 #21 PC 393 4 2 4 RET 15B 15B 15B 15B R M1 R M3 R M2 R M4 10x4 R1 4 3 R1 4 0 R1 4 1 R1 3 9 C1 0 3 5 V/ 4 7 0 #17 4 AK2 9 2 G1 D1 2 4 RET 3 A 4 5 AB G2 D2 6 7 B G3 D3 8 9 BB G4 D4 P1 0 B6 B- PH BL ACK 3 4 1 5 6 2 +5V 1 S1 10 R1 5 0 S2 R1 4 9 2. 2K 2 100 B C MP R A 1 13A + - + - P9 B6 B- PH 2 5 1 13A +5V R1 4 4 2. 2K C MP R B 7 C1 2 7 3 CC1 0 3 #21 PC3 9 3 2 4 RET 6 C1 1 8 5 CC1 0 3 R1 4 2 R3 100 0. 47 1/ 2W R4 0. 47 1/ 2W +5V 2 4 RET 3 R1 4 6 4 2 4 RET 4 . 3 KF +24V 6 P MOT 15B MT I 0 1 Q2 U MG5 N R1 5 3 1 KF 5 C1 3 6 CC1 0 4 R1 4 5 240F 14B VCL N Q1 4 DT C1 1 4 YK 3 2 VCL NL 11A C1 4 4 C1 0 6 CC1 0 4 +5V R1 2 2 2 Vr e f 25 NC 3 Vs A 10 Rs A 26 Vs B R1 5 2 470F 2 4 RET 1 EL 14B EL L 12A 2 4 RET S0 V 18K C1 1 0 332 27 C/ R 12 NC 14 NC 18 Rs B 16 NC 17 NC R1 0. 62 1W R2 0. 62 1W 15B MT I 1 3 4 2 C L9 0 S0 V L G PG 2 4 RET C 14B FAN 15A 1 5 A, 2 6 A 15A Q1 3 DT C1 1 4 YK 3 2 +5V + 2 4 VRET HAI SI RESI 1 R3 9 22K R4 1 22K R4 0 1K T CS F ANL R4 2 22K R4 3 1K L10 0 7B 7A 2A 3B 15C 1 13 2 4 RET Q2 4 DT DG2 3 Y P +24V B L M1 1 A 2 0 MT D 2 0 0 3 L11 P1 8 F AN2 2 1 B2 B- PH 2 V RCON 1 L12 B L M1 1 A 2 0 14A S OL 3 2 4 RET WH I T E 2 4 RET +24V Q2 0 DT DG2 3 Y P 2 1 S OL 1 2 13A P8 B2 B- PH 3 2 4 RET RED +5V R1 2 8 1K HOOK R1 3 2 HOOK B L M1 1 A 2 0 1 C1 2 5 CC1 0 1 2 S0 V P1 1 B2 BPH BL UE 15A 15A COV E R T NOR S0 V R3 7 1M C3 5 CC1 0 1 S0 V 13A 6B HET H D D 1 5 A, 5 3 B 13B S OT H2 C8 9 CC1 0 2 C9 5 CC1 0 2 S0 V R8 6 1 0 KF 2 4 RET M0 V 10A 10B C1 3 8 CC1 0 2 S0 V R1 9 1 1 0 KF S0 V 1A 1B 9A P1 3 2 6 PI N A MAIN 5/8 MFC4550plus/7650MC 1 2 3 4 5 6