Brother International IntelliFax-3550 Service Manual - Page 170
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1 2 3 4 5 6 NCU1 +5V +24V +24V M5 V 10 4 16 12 Q1 8 #8 KI 3 2 4 C9 8 CC5 0 C1 0 4 #14 7 4 HC4 0 5 3 C1 3 3 CC1 0 4 C ML L 8 A 3 DT C1 1 4 YK 2 C ML H 11B 11 678 SP A R8 7 1 K PL S 3 11B 1 M0 V M0 V L 8 B L M1 1 A 2 0 1 2 R8 0 22K 2 +5V R8 1 1K 2 4 RET T L OF 94C R2 1 8 0 C9 0 R9 1 5 6 K 9 8 R9 2 1 0 K C9 1 CC1 0 4 24V TEL 10 CNT 1 15 C 0 11A 1 2 R1 8 5 1 . 5 K TXO 41B +5V C1 5 100 / 6. 3V R2 0 0 B L M1 1 A 2 0 S0 V P1 6 B2 B- PH BL ACK 4 C1 2 1 CC1 0 3 B C1 C1 2 2 CC1 0 3 B 11A C1 5 1 R9 0 1K 1/ 10W #8 + 10 KI 3 2 4 R1 8 9 10K #14 7 4 HC4 0 5 3 - A 6 4 S0 V S0 V 9 3 OGM 2 M0 V 94C C D7 UDZ 9 . 1 B A 72A TL SL S P A MP 76C V+ GND C1 4 3 5 100 / 6. 3V - I N OUT 5 B TL SL R2 2 0 TL SL R2 2 1 74B 1 Q2 6 M0 V MOV 7 #22 2 1 + I N GA I N B RL 1 6 73C SDW 43B R2 2 2 D G Q2 9 Z D3 Z D2 S 2 SK2 0 8 7 RL 2 73C ( ) D1 0 1 SS1 3 3 AC M0 V 8 GA I N N J M3 8 6 AREF D1 1 1 SS1 3 3 11 S0 V C1 2 8 R9 5 1 . 5 K 1 C9 2 6 8 1 R9 3 0 2 1 R9 4 100K C9 3 CC8 2 2 71B RL 1 RL 2 C ML H 11B 11 13 1 12 CNT C 14 0 RI N 43B 41B PRI NG R1 3 7 10K CC1 0 4 31 5 RNG 9 CNT C4 12A S P A MP 75B R9 6 R1 0 0 4. 7K 0 #8 + 3 D 2 KI 3 2 4 G 3 M0 V R1 0 1 0 1 S Q1 9 2 SK2 0 8 C 46C 71B RL T L 2C #14 7 4 HC4 0 5 3 - A 1 0 #18 11A RI NGO R1 6 1 33K C1 3 2 CC1 0 4 0 #14 7 4 HC4 0 5 3 43B V OL 2 R1 5 5 220 R1 5 4 1. 5K R1 5 6 680 R1 5 1 K 3. 3K 3 Q2 7 DT C1 1 4 YK 2 S P ON 12A C US Ve r AREF R1 0 3 T C4 S6 6 F DAREC 11A 1 CNT 4 M0 V M0 V M0 V 1 ADL C 16 98C C1 0 1 MU T E 43B V OL 1 Q2 8 M0 V S0 V R8 9 DASEND 18 11A 93B U MG5 N M0 V S0 V C1 2 3 +5V ) C1 2 4 17 19 S0 V R1 9 0 R8 8 +24V DAST 11A 5 #18 T C4 S6 6 F 3 ( 20 +5V D D 13 DPS 11B M0 V R8 2 EAT 150K 14 11B 15 P6 B2 0 B- PH P OL 94C A MAIN 7/7 MFC4450 1 2 3 4 5 6