Brother International IntelliFax-3550 Service Manual - Page 167
Main 4/7, Cc104, Cc15p, Cc102b, 3 6 Mh Z, Wu 0 4 F
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1 2 3 4 5 6 S0 V +5V +5 R6 2 L6 0 0 A A C6 C7 5 C7 6 M0 V M5 V 1 6 V/ 1 0 CC1 0 4 x 2 + - + - S0 V 74C 43C RI N C1 0 0 CC1 0 4 AREF R1 0 6 27K R1 6 6 27K C9 9 ( CC1 0 2 ) R1 0 5 1 2 0 K 13 12 14 #8 KI 3 2 4 R1 0 7 4. 7K PRI NG 74C D9 MZ 5 . 1 B B M0 V S0 V 11 DGND 10 DVDD 19 DGND 18 DVDD 25 24 DGND DVDD 32 31 DGND DVDD 41 40 DGND 49 DVDD 48 DGND DVDD 58 57 DGND DVDD 65 64 DGND DVDD 70 DGND 75 DGND 69 DVDD 74 DVDD ABUS L2 7 1 7 WU 0 4 F 2 6 21 FSI N 39 A1 A0 11C 470F #25 #25 +5V 20 F S OUT 38 A1 A2 R2 1 7 1 M 37 A3 A2 +5V 66 TEST1 16 TEST2 14 1 7 TEST3 TEST4 15 TEST5 13 MON 1 12 MON 2 36 A3 51 D0 50 D1 47 D2 46 D3 45 D4 44 D5 A4 D0 D1 D2 D3 D4 D5 DBUS 12B 8 2 0 . 7 3 6 MH Z XT3 #25 7 WU 0 4 F C1 5 0 CC1 0 4 4 B C5 7 9 MON 3 43 D6 D6 C5 9 CC1 8 P * R6 7 * R6 4 8 MON 4 7 MON 5 6 MON 6 42 D7 D7 22 CL K 5 3 #25 CC1 5 P C0 V C0 V +5 R5 1 7 5 0 M5 V M0 V R6 6 0 C8 5 CC1 0 4 R6 5 0 72B 75C 75C SDW V OL 1 V OL 2 76 HI P0 73 HI P1 7 2 HI P2 71 HOP 0 67 HOP 1 68 HI P2 S0 V C1 3 5 1 6 V/ 1 0 5 NC 30 NC 4 AVDD 77 AVDD 1 A GND 80 A GND 23 - RST 35 - CE 34 # 2 4 - RD 3 3 - WR 29 MP S E L 28 - I NT 27 - DREQ 26 - DACK 56 DT CK 59 RXD 60 TXD 61 - DCD 62 - CT S 63 - RT S MC E RD L WR 13A 13B 13B MI N T 11B MR S T 13A L9 0 S0 V C1 4 8 CC1 0 4 B R2 1 5 78 RXI NA 52 EYECKO R9 8 1K ) 79 RXI NB 53 EYECKI 75K 2 54 VBI AS EYEDAT C 3 T X OUT 55 EYESYC C C8 4 CC2 2 1 CH ( 1 0 / 1 6 V * R1 6 9 C1 4 9 CC1 0 3 B R2 1 6 1K C7 M0 V 41B 45C AREF C8 3 CC1 0 4 T C3 5 1 2 9 F C9 6 CC1 0 4 R1 0 4 56K C9 4 CC1 0 2 B R9 9 56K C1 4 7 CC2 2 1 CH 6 7 5 #8 KI 3 2 4 AREF 43C TXO 75A R9 7 4. 7K M0 V D D A MAIN 4/7 MFC4450 1 2 3 4 5 6