Brother International IntelliFax-3550 Service Manual - Page 169
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1 2 3 4 5 6 A +5V RA4 1 . 0 Kx 4 RA6 2 . 2 Kx 4 RA8 2 . 2 Kx 4 1 2 3 4 3 2 1 4 1 4 3 2 P1 5 5 7 L E4 0 3 6 0 10 11 12 13 32 31 36 14 1 9 B 8 7 6 5 4 3 2 16 17 19 20 21 22 23 C 24 25 26 27 28 29 30 S0 V 18 NC 2 6 5 8 5 8 7 6 5 6 7 8 C5 3 C5 2 C5 1 C5 0 C4 9 C4 8 C4 7 C4 6 CC4 7 1 C4 2 C4 4 C4 3 C4 5 C4 1 C4 0 C3 9 C3 8 C3 7 R7 1 5 0 8 1 6 3 RA5 7 2 100x4 5 4 5 4 6 3 RA7 100x4 7 2 8 1 5 4 6 3 RA9 100x4 7 2 8 1 R6 1 5 0 R8 1 5 0 S0 V CC1 0 1 x 1 6 R2 0 9 1 0 KF +5V R2 0 8 3 6 K R2 0 6 1 0 KF R2 0 5 4. 7K S OV 3 + 4 #23 1 - TA7 5 S0 1 F C1 4 2 CC1 0 4 +5V 5 2 #23 +5V R2 0 7 18K - ACK BUSY PPE - SL CT - FLT P R MI N T SEL I N HBUY STB DC7 14C 14C 14B 14B 14B 14B 14B 14B 14C DC6 DC5 DC4 DC3 DC2 DC1 DC0 DCBUS 14C D C1 4 1 CC1 0 4 S0 V A +5V 1 D3 MA 7 0 0 2 RVDD 16A B R1 2 1K C2 5. 5V 473F S0 V C D A MAIN 6/7 MFC4450 1 2 3 4 5 6