C2152,C2153,C2155,C2157 (bizhub 950i/850i)

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 type– C2152: Transfer belt fault at initial position return

– C2153: Transfer belt spacing fault at K pressure switching

– C2155: Transfer belt contact fault after K pressure established

– C2157: Transfer belt spacing fault at all release switching
RankB
Trouble detection condition– C2152: The 1st transfer pressure sensor/K (PS51) does not detect “switch from retraction to pressure” or “switch from pressure to retraction” within the set period of time during an initial position return.

– C2153: The 1st transfer pressure sensor/K (PS51) does not detect “switch from retraction to pressure” within the set period of time after the pressure operation has stared.

– C2155: The 1st transfer pressure sensor/K (PS51) is unblocked even after the set period of time has elapsed when the pressure operation is complete.

– C2157: The 1st transfer pressure sensor/K (PS51) does not detect “switch from pressure to retraction” within a set period time after the retraction operation has started. Or the 1st transfer pressure sensor/K (PS51) is blocked even after the set period of time has elapsed when the retraction operation is complete.
Trouble isolation–
Relevant electrical parts– Transfer belt unit1st transfer pressure motor (M21)
– 1st transfer pressure sensor/K (PS51)
– CPU board (CPUB)
– Base board (BASEB)

Procedure

  1. Check the connector between M21-relay CN428-BASEB CN19E for proper connection and correct as necessary.
  2. Check the connector of M21 for proper drive coupling and correct as necessary.
  3. Check for proper sliding operation of the transfer belt unit transfer roller pressure gear and the proper roller operation. Correct as necessary.
  4. Check the connector between PS51-relay CN297-BASEB CN27E for proper connection and correct as necessary.
  5. Check CPUB for proper installation and correct as necessary.
  6. PS51 I/O check, sensor check
    • Control signal: BASEB CN27E<A>-1 (ON)
    • Location of electrical component: 14-C
  7. M21 load check
    • Check code: 24
    • Multi code: 1, 2, 3
    • Control signal: BASEB CN19E-5 to 8
    • Location of electrical component: 2-K
  8. Replace M21.
  9. Replace the transfer belt unit.
  10. Replace CPUB.
  11. BASEB F7E conduction check.
  12. Replace BASEB.

(Link to the Field Service Manual)