How Can We Help?

C2558 (bizhub 4750i/4050i)

Posted
ByAdministrator Administrator
You are here:

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

Contents

Trouble typeC2558: Abnormally high toner density detected black TCR sensor
RankB
Trouble detection conditionTC ratio in the imaging unit, which is determined by toner replenishing amount control mechanism, is a predetermined value or more for a given number of times consecutively.
Trouble isolation–
Relevant electrical parts-Imaging unit/K
-CPU board (CPUB)
-Base board (BASEB)

Procedure

  1. Reinstall the imaging unit.
  2. Check the connector between the imaging unit/K-relay CN6-EXCB CN14E for proper connection and correct as necessary.
  3. Check CPUB for proper installation and correct as necessary.
  4. Replace the imaging unit. IUP35K (Part# AAJV01D)
  5. Replace CPUB. (Part# ACT9H01003)
  6. Replace BASEB.
    4750i (Part# ACT9H02013)
    4050i (Part# ACT9H02002)

(Link to the Field Service Manual)

Table of Contents