How Can We Help?

C3722 (bizhub C4050i/C3350i)

Posted
ByAdministrator Administrator
You are here:

Contents

Trouble typeC3722: Fusing abnormally high temperature detection (Edge of the heating roller)
RankA
Trouble detection conditionC3722: Detected temperature of the heating roller thermistor/Edg (TH1) goes beyond a given temperature for a given period of time consecutively.
Trouble isolation–
Relevant electrical parts• Fusing unit
• C3722: Heating roller thermistor/Edg (TH1)
• DC power supply (DCPS)
• CPU board (CPUB)
• Base board (BASEB)

Procedure

  1. Check the fusing unit for correct installation (whether it is secured in position).
  2. Check the open/close operation of the right door.
  3. Check the connector between the fusing unit-relay CN3-BASEB CN10E for proper connection and correct as necessary.
  4. Check the connector between the fusing unit-relay CN2-DCPS CN2 for proper connection and correct as necessary.
  5. Check CPUB for proper installation and correct as necessary.
  6. Replace the fusing unit. (Part# AAJRR70300)
  7. Replace CPUB. (Part# A93EH01004)
  8. Replace BASEB. (Part# A93EH02007)
  9. Replace DCPS. (Part# AAJRR70600)

Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.

L.3.8.3 (Link to the Field Service Manual)

Table of Contents