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C3737 (bizhub C759/C659)
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Contents
| Trouble type | C3737: -Fusing abnormally high temperature detection hard protector (Center of the heating roller) -Fusing unit for incorrect marketing area (The fusing unit for incorrect marketing area is installed) |
| Rank | A |
| Trouble detection condition | -An abnormally high temperature is detected on the hard protector circuit (edge of the heating roller). -An abnormally high temperature is detected on the hard protector circuit (middle of the heating roller). -An abnormally high temperature is detected on the hard protector circuit (center of the heating roller). |
| Trouble isolation | – |
| Relevant electrical parts | -Fusing unit -Heating roller thermistor/1 (TH1) -MFP board (MFPB) |
Procedure
- Check the fusing unit for correct installation (whether it is secured in position).
- Check the open/close operation of the upper right door.
- Check the connector between the fusing unit-relay CN261-MFPB CN21E for proper connection and correct or change as necessary.
- Check the connector between TEMS2, TEMS3-relay CN512-MFPB CN31E for proper connection and correct as necessary.
- Replace the fusing unit. (Part# A8JER70222)
- Replace TEMS2, TEMS3. (Part# A796M50000)
- Replace MFPB. (Part# A8JEH02002)
L.3.10.10 (Link to the Field Service Manual)