C7633 (bizhub 4750i/4050i)

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Contents

Trouble type	C7633: Supply power line 3 error
Rank	C
Trouble detection condition	All of the fuse detection units of the same supply power line (24V20) detected an error for a predetermined time.
Trouble isolation	–
Relevant electrical parts	-DC power supply (DCPS) -Base board (BASEB)

Procedure

1. BASEB F8E, F11E, F18E, F19E conduction check
2. Check the connector between DCPS CN4-BASEB CN3E for proper connection and correct as necessary.
3. Check the connector between DCPS CN6-BASEB CN1E for proper connection and correct as necessary.
4. Check the connector between SW2, SW5-relay CN36-DCPS CN3 for proper connection and correct as necessary.
5. Replace DCPS. (Part# AAJRR70600)
6. Replace BASEB.
   4750i (Part# ACT9H02013)
   4050i (Part# ACT9H02002)

(Link to the Field Service Manual)