Xerox 3450B Service Manual - Page 61
Fuser Failure/Low Heat/or Overheat/ 0x56/ 0x57/0x58
UPC - 095205120011
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Fuser Failure/Low Heat/or Overheat/ 0x56/ 0x57/0x58 The printer's front panel displays "Fuser Failure, Engine Fuser Over Heat Error, or Engine Fuser Low Heat Error". The fuser has been removed, reseated, and locked into place. Any obstructions, media, or debris has been removed from the fuser paper path. Printer power has been cycled and the error still appears. Troubleshooting Reference Applicable Parts Fuser heat lamp Fuser overheat thermostat Thermistor Main Board Wiring and Plug/Jack Map References "Print Engine Interconnect Diagram" on page 10-2 Troubleshooting Procedure Steps Actions and Questions 1 Remove Fuser 2 Check resistance of overheat thermostat. Is thermostat open? 3 Check resistance of thermistor. Is thermistor open? 4 Check resistance of heat lamp. Is heat lamp open? Yes Go to Step 2. Replace Fuser. Replace Fuser. Replace Fuser. No - Go to Step 3. Go to Step 4. Replace Main Board. 3-14 Phaser 3450 Laser Printer Service Manual