HP FAX-750 Service Manual - Page 174

1 2 3 4 5 6 7 8 +5V Q5 RH5 VA4 3 R6 2 RST L 1 6 A, 4 7 B #5 1. 5K T 7 D9 6 VCC OUT 45 RST 27 RT CCON RST L 1 4 A 28 A GND C5 3 RVDD 30 RVDD A CC1 0 4 R7 1 1 0 0 REXT 70 29 2 6 D RAS RAS0 RX T GND 2 6 D CAS 2 6 D, 2 7 A RMRD R7 0 R9 2 100 100 71 RA S 1 74 CAS 83 ME MR D 26 CK1 HZ 3 TXD TXD XT 1 C- 0 0 1 R 2 6 D R M WE 84 M E M WR 4 RXD RXD +25V +5V 2 7 B R OMC R9 3 1 0 0 85 R OMC 46 I ORD 5 CT S 6 RT S CT S RT S C5 6 CC1 5 P C6 7 CC1 5 P 47 I O WR 7 CRXD CRX D PBUS 1 7 B L12 L102B PANEL 1 6 2 3 R3 9 100K 2 5 B EPDO 2 5 B EPCK 134 135 EEDAT EECL K R3 7 2 7 0 R3 1 4 7 0 137 138 PCL K SDI N 16 S OL 17 P M1 20 P M2 21 P M3 22 P M4 S OL 2 3 F MM1 MM2 MM3 MM4 GND +5V L5 L102B PCI 1 B GND FG 4 139 S DOUT 23 MT I 0 MT I 0 L8 L102B B 7 R3 8 1 0 0 24 MT I 1 MT I 1 1 6 B PBUS RT S 6 MB U S 2 3 C 5 F RNT 128 SEN1 75 D0 D0 TXD L6 L102B 129 76 D1 3 3 7 C REAR SEN2 D1 P9 C2 8 C2 7 C2 6 C2 5 3 7 D CSEN 130 SEN3 77 D2 D2 * * * CC1 0 1 3 7 A FSEN 131 SEN4 78 D3 D3 L7 L102B RX D 5 GND 3 7 B RSEN 3 7 C RI BN 132 133 SEN5 SEN6 79 D4 80 D5 81 D6 82 D7 D4 D5 D6 D7 DBUS 2 6 E L9 L102B CT S 7 L10 L102B CRXD 8 32A TG 8 TG 48 A0 A0 9 CL 1 49 A1 A1 2 10 CL 2 50 A2 A2 11 51 A3 32A RB RDCK1 A3 4 12 52 A4 C R6 3 RDCK2 A4 13 53 A5 10K 3 3 C C L MP RDCL P A5 C GN D 14 56 A6 P6 3 3 B L I GT P WM L E D A6 B8 B- PH 15 57 A7 3 3 C C P WM P WM C L P A7 WH I T E 58 A8 A8 C5 5 CC1 0 4 32E 32E ST1 ST2 95 ST1 94 ST2 59 A9 60 A1 0 A9 A1 0 32E HDC 93 HDC 61 A1 1 A1 1 #5 T 7 D9 6 GND 3 2 E DOUT 32E DI N 92 DOUT 89 DI N 62 A1 2 63 A1 3 A1 2 A1 3 3 2F LATC 88 L ATC 65 A1 4 A1 4 4 2 F DASND 4 3 D DAREC R5 4 R5 5 10K 103 102 P WM S N D P WM R E C D P D MC K A P D MC K D P D MD T 110 111 112 20 0X3 R5 1 R5 3 R5 2 D MK A MK D MT 3 5 E P WO N GND R6 4 * 87 P WO N 25 P I O5 86 P I O6 66 A1 5 67 A1 6 68 A1 7 69 A1 8 A1 5 A1 6 A1 7 A1 8 R9 0 * 4 7 E S P ON 4 6 E VOL 1 140 141 S P ON V OL 1 ( OD) A P D MD T C3 113 114 A MT C3 4 1 F DAST 104 143 P I O7 P WM 4 42 TST1 L5V ABUS 2 6 E D C4 5 C3 9 4 6 E VOL 2 142 V OL 2 ( OD) 115 C4 C4 R8 8 43 T ST 2 D CC1 0 4 4 6 E VOL 3 144 V OL 3 ( OD) 117 C5 118 C5 MU T C7 8 MU T E 3 5 F , 4 3 C CML H 119 C ML T BUS 4 8 B 4 3A TELL 120 TEL 106 ME X T L GND 4 6 D RNGL 4 5 E RNGO 43E PL S 4 2 E RDPS 121 122 101 100 RNGL RI NG PL S DPS MT X L MC L K 108 105 XT 2 2 0 . 7 3 6 MHZ R5 6 150 GND +5V 42E EAT 4 2 D OT O 4 5 A HRAD 99 123 124 EAT OT O HRA D( OD) C4 3 CC1 0 P R9 1 150 C4 4 CC2 0 P D1 MA 7 0 0 4 5 B F OGM 125 F OGM( OD ) 3 7 E HOOK 127 HOOK 42F CI 98 CI GND +5V 4 2 F T L OF 97 T L OF E 4 2 F T L O2 96 T L OF 2 +25V 2 VDD 18 VDD L3 L11 C4 0 R5 7 75K 54 VDD 72 VDD 90 VDD * * 109 VDD L5V +5V R5 8 1 0 KF C4 8 CC1 0 4 3 2 D CP3 I 4 2 F ADL C 32B VI D 32 C MP L C 35 C MP R D 34 C MP T H 126 VDD 1 VSS R5 9 75F GND GND 33 C MP V L 36 CPNN 19 VSS 44 VSS 55 VSS 38 RDA 6 64 VSS C3 8 C4 1 C4 2 C4 6 C4 7 C5 2 C5 4 C6 4 R6 0 +5V 37 AVDD 73 VSS CC1 0 4 CC1 0 4 CC1 0 4 CC1 0 4 CC1 0 4 CC1 0 4 CC1 0 4 CC1 0 4 100F 39 REF H 91 VSS 40 107 REF L VSS F 31 116 A GND VSS R6 1 C5 0 C5 1 C6 5 C4 9 41 136 75F CC1 0 4 CC1 0 4 CC1 0 4 CC1 0 4 A GND VSS RVDD R8 1 C6 8 1K CC1 0 4 E C3 GND GND F GND GND GND Main PCB 1/5 A (FAX750/FAX770/FAX-910/ FAX-920/FAX-921/MFC-925) 1 2 3 4 5 6 7 8