Brother International IntelliFax-3550 Service Manual - Page 168

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 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 14B 1 5 A, 2 6 A Q1 0 DT C1 1 4 YK 3 2 L DON S0 V +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 15C 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 P M4 23 I N3 22 #16 I N4 15 03 19 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 220x4 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 4 RET 2 3 A G1 D1 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 VCL N Q1 4 DT C1 1 4 YK 3 2 VCL NL 11A C1 4 4 C1 0 6 +5V +5V 2 Vr e f 3 Vs A 10 Rs A R1 5 2 2 4 RET 14B CC1 0 4 R2 1 0 R1 2 2 25 NC 26 Vs B 470F 1 2 4 RET 18K 27 C/ R 18 Rs B R1 R2 15B MT I 1 3 4 C EL 14B EL L L11 12A B L M1 1 A 2 0 S0 V C1 4 5 2 4 RET C1 1 0 332 S0 V 12 NC 14 NC LG 16 NC 17 NC PG 0. 62 1W 0. 62 1W 2 2 4 RET C 14B FAN Q1 3 DT C1 1 4 YK 3 2 F ANL 7B +5V 1 + 2 4 VRET 15A 1 5 A, 2 6 A 15A HAI SI RESI T CS R3 9 22K R4 0 1K R4 1 22K R4 2 22K R4 3 1K 7A L10 BL M 2A 1 1 A2 0 3B 15C 1 13 Q2 4 DT DG2 3 Y P V RCON 1 2 4 RET +24V MT D 2 0 0 3 BLM F AN2 1 1 A2 0 L13 1 2 L12 2 BL M 1 1 A2 0P1 8 14A B2 B- PH 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 13A 2 P8 B2 B- PH 3 2 4 RET RED +5V R1 2 8 22K HOOK * R1 3 2 ( ) () * C1 2 5 S0 V ) HOOK 1 2 * P1 1 ( 15A 15A COV E R T NOR S0 V R3 7 1M C3 5 CC1 0 1 S0 V 13A 6B S0 V ) HET H D 1 5 A, 5 3 B 13B R2 1 9 D 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 ( 2 4 RET C1 3 8 CC1 0 2 R1 9 1 1 0 KF S0 V S0 V 1A 1B 9A P1 3 2 6 PI N A MAIN 5/7 MFC4450 1 2 3 4 5 6