Circuit Description
WorkCentre Pro 412
Launch Issue
5-22
August 2001
5-4 Host Interface
Referred to IEEE 1284 standard.
5-4-1. Host Interface
PARALLEL PORT INTERFACE PART KS32C61200 enables the parallel interface with the PC. This part is
connected to the PC through a Centronics connector. It generates major control signals that are used to actu-
ate parallel communication. It is comprised of/ERROR, PE, BUSY, /ACK, SLCT, /INIT, /SLCTIN, /AUTOFD
and /STB. This part and the PC data transmission method support the method specified in IEEE P1283
Parallel Port Standard (http://www.fapo.com/ieee1284.html). In other words, it supports both compatibility
mode (basic print data transmitting method), the nibble mode (4bit data; supports data uploading to PC) and
ECP (enhanced capabilities port: 8bits data - high speed two-way data transmission with PC). Compatibility
mode is generally referred to as the Centronics mode and this is the protocol used by most PCs to transmit
data to the printer. ECP mode is an improved protocol for the communication between PC and peripherals
such as printer and scanner, and it provides high speed two-way data communication. ECP mode provides
two cycles in the two-way data transmission; data cycle and command cycle. The command cycle has two for-
mats; Run-Length Count and Channel Addressing. RLE (Run-Length Count) has high compression rate (64x)
and it allows real-time data compression that it is useful for the printer and scanner that need to transmit large
raster images . Channel Addressing was designed to address multiple devices with single structure. For
example, like this system, when the fax/printer/scanner have one structure, the parallel port can be used for
other purposes while the printer image is being processed.This system uses RLE for high speed data trans-
mission. PC control signals and data send/receive tasks such as PC data printing, high speed uploading of
scanned data to PC, upload/download of the fax data to send or receive and monitoring the system control
signal and overall system from PC are all processed through this part.
Compatibility Hardware Handshaking Timing
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...