Circuit Description
WorkCentre Pro 412
Launch Issue
5-17
August 2001
5-2-6 FS781 (Frequency Attenuator)
This system used FS741 for the main clock for EMI suppression.
It spreads the source clock in a consistent bandwidth to disperse the energy gathered in order to attenuate the
energy.
The capacitor value of the loop filter (PIN 4) is set depending on the source clock used or the spread band-
width. Refer to FS781 Spec. for detail.
5-2-7 USB (Universal Serial Bus)
NS’s USBN9602 is used as the interface IC and 48MHz clock is used.
When the data is received through the USB port, EIRQ1 SIGNAL is activated to send interrupt to CPU, then
it directly sends the data to DRAM by IOCS4* & DRAMA(11) SIGNAL through DRAMD (24;31).
5-2-8 SRAM; 32KB SRAM
It stores a variety of option data.
5-2-9 FAX Transceiver
5-2-9-1. General
This circuit processes transmission signals of modem and between LIU and modem.
5-2-9-2. Modem (u44)
FM336 is a single ship fax modem. It has functions of DTMF detection and DTMF signal production as well as
functions of modem. TX A1, 2 is transmission output port and RX IN is received data input port. / POR signal
controlled by MFP controller (U3:KS32C61200) can initialize modem (/M_RST) without turning off the system.
D0-D7 are 8-bit data buses. RS0-RS4 signals to select the register in modem chips. /RS and /WR signals
control READ and WRITE respectively. /IRQ is a signal for modem interrupt.
Transmission speed of FM336 is supported up to 33.6k.
The modem is connected to LINE through transformer directly.
FAX TRANSCEIVER
Содержание WorkCentre Pro 412
Страница 18: ...Introduction WorkCentre Pro 412 August 2001 1 14 Launch Issue This page intentionally blank...
Страница 22: ...Precautions WorkCentre Pro 412 Launch Issue 3 2 August 2001 This page intentionally blank...
Страница 82: ...Disassembly and Reassembly WorkCentre Pro 412 Launch Issue 6 18 August 2001 This page intentionally blank...
Страница 99: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 17 August 2001 No Image...
Страница 100: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 18 August 2001...
Страница 101: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 19 August 2001 All Black...
Страница 102: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 20 August 2001 Vertical White Line Band...
Страница 103: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 21 August 2001 Dark Image...
Страница 104: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 22 August 2001 Background...
Страница 105: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 23 August 2001 Ghost...
Страница 106: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 24 August 2001 Black Dot...
Страница 107: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 25 August 2001 Horizontal Band...
Страница 108: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 26 August 2001 Irregular Density...
Страница 109: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 27 August 2001 White Spot...
Страница 111: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 29 August 2001 Poor Fusing...
Страница 114: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 32 August 2001 No Power No LCD or LEDs...
Страница 115: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 33 August 2001 Fuser Error...
Страница 116: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 34 August 2001 Paper Jam Mis feeding...
Страница 117: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 35 August 2001 Paper Jam Jam 1...
Страница 118: ...Maintenance Troubleshooting WorkCentre Pro 412 Launch Issue 7 36 August 2001 Engine Error...
Страница 122: ...Exploded View Parts List WorkCentre Pro 412 Launch Issue 8 4 August 2001 8 2 Platen Ass y Exploded View Parts List...
Страница 127: ...Exploded View Parts List WorkCentre Pro 412 Launch Issue 8 9 August 2001 This page intentionally blank...
Страница 131: ...Exploded View Parts List WorkCentre Pro 412 Launch Issue 8 13 August 2001 This page intentionally blank...
Страница 150: ...Exploded View Parts List WorkCentre Pro 412 Launch Issue 8 32 August 2001 This page intentionally blank...
Страница 163: ...Block Diagram WorkCentre Pro 412 Launch Issue 10 1 August 2001 10 Block Diagram...
Страница 164: ...Block Daigram WorkCentre Pro 412 Launch Issue 10 2 August 2001 This page intentionally blank...
Страница 165: ...Connection Diagram WorkCentre Pro 412 Launch Issue 11 1 August 2001 11 Connection Diagram...
Страница 166: ...Connection Diagram WorkCentre Pro 412 Launch Issue 11 2 August 2001 This page intentionally blank...
Страница 168: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 2 August 2001 12 2 Main Circuit Diagram 2 of 14...
Страница 169: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 3 August 2001 12 3 Main Circuit Diagram 3 of 14...
Страница 170: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 4 August 2001 12 4 Main Circuit Diagram 4 of 14...
Страница 171: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 5 August 2001 12 5 Main Circuit Diagram 5 of 14...
Страница 172: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 6 August 2001 12 6 Main Circuit Diagram 6 of 14...
Страница 173: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 7 August 2001 12 7 Main Circuit Diagram 7 of 14...
Страница 174: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 8 August 2001 12 8 Main Circuit Diagram 8 of 14...
Страница 175: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 9 August 2001 12 9 Main Circuit diagram 9 of 14...
Страница 176: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 10 August 2001 12 10 Main Circuit Diagram 10 of 14...
Страница 177: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 11 August 2001 12 11 Main Circuit Diagram 11 of 14...
Страница 178: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 12 August 2001 12 12 Main Circuit Diagram 12 of 14...
Страница 179: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 13 August 2001 12 13 Main Circuit Diagram 13 of 14...
Страница 180: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 14 August 2001 12 14 Main Circuit Diagram 14 of 14...
Страница 181: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 15 August 2001 12 15 LIU Circuit Diagram...
Страница 182: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 16 August 2001 12 16 OPE Circuit Diagram...
Страница 183: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 17 August 2001 12 17 HVPS Circuit Diagram 1 of 2...
Страница 184: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 18 August 2001 12 18 HVPS Circuit Diagram 2 of 2...
Страница 185: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 19 August 2001 12 19 SMPS 110 Circuit Diagram...
Страница 186: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 20 August 2001 12 20 SMPS 220 Circuit Diagram...
Страница 187: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 21 August 2001 12 21 ADF Circuit Diagram...
Страница 188: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 22 August 2001 12 22 Flat Circuit Diagram...
Страница 189: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 23 August 2001 12 23 PTL Circuit Diagram...
Страница 190: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 24 August 2001 12 24 Sensor Circuit Diagram...
Страница 191: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 25 August 2001 12 25 Toner RX Circuit Diagram...
Страница 192: ...Schematic Diagrams WorkCentre Pro 412 Launch Issue 12 26 August 2001 12 26 Toner TX Circuit Diagram...