Xerox 8500DN Service Manual - Page 78
XX.6x Errors - IPC Program Faults
UPC - 095205022063
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Error Messages and Codes 3,0XX.6x Errors - IPC Program Faults There is a communication problem between the engine and PostScript regions. a. Reset NVRAM, and then retest. b. Replace the EEPROM chip. 4,0XX.4x Errors - Process Control System Fault 4,017.47: This fault code indicates a problem with the process control system. The ambient temperature is considered too cold to warm up the printer (less than 10o C). 4,018.48: This fault code indicates a problem with the process control system. The Printhead temperature dropped below the head cleaning needed threshold. 4,020.41: This fault code indicates a problem with the process control system. Declared when the printer is booted in FTTR (Fast Time to Ready) mode and the head/wiper contact flag is set in NVRAM. The printer cannot run in FTTR mode with the head/wiper in contact because it would be unwise to separate the two when the printer is cold (could tear wiper.) Service requested that this be a device fault in order to alert the service person to this condition. 4,021.42: This fault code indicates a problem with the process control system. Declared when the printer is booted in FTTR mode and the Drum is dirty. Cleaning the Drum when very cold could increase the chance of gluing media to the Drum surface around the stripper fingers. Service requested that this be a device fault in order to alert the service person to this condition. Troubleshooting Procedure for Process Control System Step Questions and Actions Yes No 1 1. Verify the temperature of the room where Complete. the printer is located (see "Environmental Specifications" on page 1-12). 2. Is the room temperature too cold? 3. Ensure the printer is acclimated to the room temperature. Did this correct the problem? 2 Run the Monitor Heaters tests with all heaters ON. Are the heaters operating correctly and within specification? Replace the Electronics Module. 3 Inspect the harness to the failed heater. Is the harness damaged? Replace the harness. Go to Step 2. Go to Step 3. Replace the problem component. 3-10 Phaser 8400/8500/8550/8560 Color Printer Service Manual