C3103 (bizhub 650i/550i/450i)

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Contents

Trouble type	C3103: Pressure roller release failure
Rank	B
Trouble detection condition	The fusing pressure home sensor (PS38) is not turned OFF (unblocked) even after the lapse of a predetermined period of time after the fusing pressure motor (M11) has started rotating during retraction of the pressure roller.
Trouble isolation	–
Relevant electrical parts	-Fusing unit -Fusing pressure motor (M11) -Fusing pressure home sensor (PS38) -Expansion control board (EXCB) -CPU board (CPUB) -Base board (BASEB)

Procedure

1. Check the connector between M11-relay CN112-EXCB CN14EX for proper connection and correct as necessary.
2. Check the connector between the fusing unit-relay CN95, CN96-BASEB CN4E for proper connection and correct as necessary.
3. Check the connector between EXCB CN2EX-BASEB CN12E for proper connection and correct as necessary.
4. Check CPUB for proper installation and correct as necessary.
5. PS38 I/O check, sensor check
   • Control signal: BASEB CN4E-3 (ON)
   • Location of electrical component: 7-C
6. M11 load check
   • Check code: 45
   • Multi code: 7, 8, 9
   • Control signal: EXCB CN14EX-11 to 14
   • Location of electrical component: 18-P
7. Replace M11. (Part# A161M10300)
8. Replace the fusing unit.
   650i (Part# AA7NR70200)
   450i/550i (Part# AA7RR70700)
9. Replace EXCB. (Part# AC74H00501)
10. Replace CPUB.
    650i/550i(Part# AC74H02P03)
    450i (Part# AC76H02P02)
11. Replace BASEB. (Part# AC74H02101)

(Link to the Field Service Manual)