Xerox 4400DT Service Manual - Page 54
press i., Front Panel, Message, Diagnostic, Error Description, Troubleshooting, Procedure
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Error Message Summaries (cont'd.) Note: The messages listed in the "Diagnostic Message" column appear only in Service Diagnostics while printing Engine Test Prints. The code numbers in these messages also appear as part of the Help information displayed when you press i. Front Panel Diagnostic Message Message Error Description Troubleshooting Procedure Fuser Failure Press i. U4 Fuser Fail/Power Off I Low temperature trouble/Power off (Fuser temperature drops below the set temperature after the Fuser warm-up is complete). I Warm-up fail/Power off (Fuser warm-up does not complete within 110 seconds). I STS Disconnection fail/Power off (Thermistor circuit is detected to be open). I High Temperature trouble/Power off (Fuser temperature rises above the set temperature). I Continuous heat on/Power off (Heat rod is on for 10 seconds when the Main Drive Motor is stopped, after the Fuser warm-up is completed). Go to Fuser Failure. on page 2-49. Fan Failure Power Off Now Press i. U5 Fan Fail/Power Off Main Fan has failed. Check the Main Fan. Power Off and On. Go to Fan Failure; Power Off Now. on page 2-49. Engine Logic Board NVRAM Failure. Press i. U6 NVM Fail/Power Off 1. Read error detected during power-on. 2. Write Error detected. Power Off and On. Go to Engine Logic Board NVRAM Failure. on page 2-50). Phaser 4400 Laser Printer Service Manual 2-17
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