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C392A (bizhub C554/C454)
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
Contents
| Trouble type | Heating roller temperature sensor contamination (Main of the heating side) | |
| Trouble code | C392A | |
| Rank | A | |
| Detection timing | <bizhub C554> When the machine is in standby mode after a predetermined period of time after the warm-up stage is started, detected temperature of the heating roller temperature sensor (TEMS) lower than a given temperature for a given period of time consecutively. | |
| Trouble isolation | – | |
| Relevant electrical parts | -Fusing unit -Heating roller temperature sensor (TEMS) -Printer control board (PRCB) |
(2)Procedure
| Step | Action | Control signal | Location of electrical components |
| 1 | Wipe the TEMS clean of dirt if any. | – | – |
| <Cleaning procedure> -Clear away a dirt or a foreign object on the sensor with a cotton swab. -When a dirt is left even if you cleaned the sensor by above procedure, clear away a dirt or a foreign object on the sensor using a cotton swab dampened with the alcohol. And, wipe off the sensor with a dry cotton swab afterwards. | – | – | |
| 2 | Check the TEMS for installed position and proper connector connection. | – | – |
| 3 | Check the connection of the fusing unit. | – | – |
| 4 | Check the fusing unit and PRCB for proper connection and correct or change as necessary. | – | – |
| 5 | Replace the fusing unit (Part# A4FJR70344) | – | – |
| 6 | Replace PRCB (Part# A2XKH00104) | – | – |
- Link to the layout drawings for related parts by each trouble code (S.89. C392A)
K3.8.10 (Link to the Field Service Manual)