Brother International IntelliFax-3550 Service Manual - Page 177
MF C 7 6 5 0, Q2 5
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1 2 3 4 5 6 NCU1 +5V +24V 10 12 Q1 8 M5 V +24V M5 V C ML L 3 DT C1 1 4 YK 16 4 16 8 A 2 C ML H 11B #13 C1 2 9 #8 C9 8 #14 C1 3 3 A R8 7 1 K PL S 3 11B 1 7 4 HC4 0 5 3 CC1 0 4 KI 3 2 4 CC5 0 C1 0 4 7 4 HC4 0 5 3 CC1 0 4 678 11 678 R8 0 22K +5V R8 1 1K 2 4 RET M0 V M0 V M0 V +5V C1 5 6 . 3 V1 0 0 2 4 9 5 B 6 7 11 1 C P6 A B1 2 B- PH T L OF 11B S0 V * C1 2 1 CC1 0 3 B S0 V C1 C1 2 2 CC1 0 3 B 11A * R2 1 5 TL SL C9 0 R9 1 5 6 K 9 R9 2 1 0 K C9 1 CC1 0 4 - 8 24V R9 0 #8 + 10 KI 3 2 4 R1 8 9 TEL 10 CNT 1 15 C 0 11A 1 2 #14 7 4 HC4 0 5 3 - A () R1 8 5 1 . 5 K C1 4 0 MOV TXO 41B T ADH 12A 76C S P A MP +5V * R1 5 8 51K R1 5 9 51K C1 3 1 6 V/ 1 0 F * C1 3 0 CC1 0 3 B * #20 2 V+ 7 A+ i 8 A- i 6 B+ i 5 B- i 4 GND A- O1 3 B- O N J M2 0 7 3 L 8 B L M1 1 A 2 0 * L7 * R2 0 0 B L M1 1 A 2 0 SP 1 2 P1 6 B2 B- PH BL ACK RL 1 RL 2 73B 1K * R2 1 6 1/ 10W 73C * Q2 2 - 2 470 TL SW 5 15B 1 F MG- 5 A M0 V 73C MF C 7 6 5 0 4 M0 V 10K HSPL Y C D7 UDZ 9 . 1 B A MOV 11A 71B TL SL * R1 3 0 100K 9 * #13 31 5 CNT C4 0 RI N * R1 6 0 41B Q2 5 U MC 4 N * C1 3 1 CC1 0 4 3 2 4 M0 V * R2 0 4 0 6 4 V+ GND S0 V B Z D2 Z D3 2 . 0 B X2 S P ON C1 4 S0 V R9 5 1 . 5 K R9 6 4. 7K * R1 0 0 0 * C9 2 6 8 1 * R9 3 14 68K 13 - R9 4 C9 3 1 0 0 K CC8 2 2 12 11 14 C #8 + 12 KI 3 2 4 * #13 * R1 3 3 0 1 13 71B RL 1 0 12 71B RL 2 C ML H 11B 11 13 1 12 CNT C 14 0 #14 7 4 HC4 0 5 3 - A 43B * R1 3 6 0 PRI NG R1 3 7 5 1 M0 V * R1 3 5 * C1 2 8 0 CC1 0 4 3 5 - I N OUT * 7 #22 2 1 + I N GA I N 6 . 3 V/ 1 0 0 8 GA I N M0 V RNG N J M3 8 6 12A M0 V * R1 0 1 2K D G S * Q1 9 2 SK2 0 8 * R1 3 4 RL T L 1 2C 0 #18 T C4 S6 6 F 1 CNT 4. 7K * R1 3 8 * C1 4 3 44C 20 1 1 10 MS L C 15 #13 9 CNT MF C 7 6 5 0 31 S P A MP 5 0 #14 C4 75B * C R1 5 5 R1 5 6 220 470 46C AREF * C1 4 5 1 0 V/ 1 0 M0 V * 103 10K DAREC * C1 0 1 11A 4 MU T E M0 V 11A C1 3 2 * R1 6 1 CC1 0 4 RI NGO 150K 7 4 HC4 0 5 3 * Q2 2 - 1 2 44C 3 V OL 2 F MG- 5 A R1 5 4 1. 5K * R1 5 1 K 4. 3K ADL C 16 11A CC1 0 4 11A 4 M0 V M0 V M0 V S0 V +5V Q2 3 3 R8 9 DASEND MF C 7 6 5 0 18 11A 5 S0 V C1 2 3 44C 2 V OL 1 1 DT C1 1 4 YK C1 2 4 17 S0 V R1 9 0 R8 8 +24V DAST 11A #18 T C4 S6 6 F 3 M0 V +5V D D 13 DPS 11B M0 V R8 2 EAT 150K 14 11B 15 * P6 B B6 B- PH RED P OL 11A A MAIN 7/8 MFC4550plus/7650MC 1 2 3 4 5 6