Xerox WorkCentre Pro 423 Service Manual

Also see for WorkCentre Pro 423: Scanner guide Fax guide Brochure & specs Fax guide User guide

WorkCentre Pro 423/428 2-178 CHAPTER 2 TROUBLESHOOTING03/02 How to use the Diagnostic C/E Mode2.4.9.10 Automatic DiagnosticChain Function Description Object PWB53 1 G/A MSBC Register Read/Write Check MAIN-SYS53 2 DRAM(LM) Address/Data Bus Check MAIN-SYS53 3 DRAM(WM) Address/Data Bus Check MAIN-SYS53 4 DRAM(OM) Address/Data Bus Check OM53 5 DRAM(LM) March Pattern Test MAIN-SYS53 6 DRAM(WM) March Pattern Test MAIN-SYS53 7 DRAM(OM) March Pattern Test OM53 8 OP-MOTO Address/Data Bus Loop Back Test OP-MOT53 20 BP-F Register Read Test BP-F53 21 BP-F Register Read/Write Test BP-F53 22 BP-F DRAM Address/Data Bus Test BP-F53 23 BP-F DRAM Pattern Read/Write Test BP-F53 24 BP-F DMA Test BP-F53 25 BP-F CODEC Test BP-F53 26 BP-F EXPRED Test BP-F53 27 BP-F CLIPPER Test BP-F53 40 EPROM MMB53 42 EEPROM MMB53 43 SRAM Address/Data Bus Check MMB53 44 SRAM March Pattern Test MMB53 45 RTC MMB53 84 HDD status check HDIF/HDD53 100 DRAM/SRAM G3M053 101 DP-RAM G3M053 102 ROM G3M053 103 G/A DPMC1 G3M053 104 CODEC & G/A RCNV G3M053 105 MODEM Register, AM Check G3M053 106 MODEM Loop Back Test G3M053 107 EEPROM G3M053 110 Loop Back (ISDN ch0) G3M0/ICM53 111 Loop Back (ISDN ch1) G3M0/ICMChain Function Description Object PWB53 152 DPRAM G4M053 153 CODEC G4M053 155 G/A G4M053 161 G4 Loop Back G4M0/ICM53 200 Panel Diagnostic PANEL53 210 MCPP, LCTC Register R/W Check PANEL53 211 ROM PANEL53 212 DRAM Address/Data Bus Check PANEL53 213 DRAM Match Pattern Test PANEL53 214 VRAM(SRAM) PANEL53 215 LED Test PANEL53 216 Tonch & LCD Test PANEL53 217 Key Test PANEL53 250 ROM ICM53 251 SRAM ICM53 252 DPRAM ICM53 253 ST Transceiver ICM53 260 Receive a Digital Signal Pattern (Channel D) ICM53 261 Receive a Digital Signal Pattern (Channel B1) ICM53 262 Receive a Digital Signal Pattern (Channel B2) ICM153 100 DRAM G3M1153 101 DP-RAM G3M1153 102 ROM G3M1153 103 G/A DPMC1 G3M1153 104 CODEC & G/A RCNV G3M1153 105 MODEM Register, RAM Check G3M1153 106 MODEM Loop Back Test G3M1153 107 EEPROM G3M1153 110 Loop Back(ISDN ch0) G3M1/ICM153 111 Loop Back(ISDN ch1) G3M1/ICM153 150 ROM G4M1153 151 SRAM G4M1153 152 DPRAM G4M1