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C9404 (bizhub C360i/C300i/C250i)
Contents
| Trouble type | C9404: CIS LED lighting abnormally (When DF-714 is installed) |
| Rank | B |
| Trouble detection condition | After a scan job is completed, the machine detected that the average output of the CIS LED is greater than the specified value. |
| Trouble isolation | Scanner |
| Relevant electrical parts | • CIS cableCIS module (CIS) • CIS power supply (CISPU) • CPU board (CPUB) • Base board (BASEB) |
Procedure
- Check the back side scanning shading shaft for any stain, and clean up it as necessary.
- Check that the bushing of the back side glass cleaning roller unit is on the standby position.
- Correct the harness connection between CIS J221-BASEB CN5 if faulty.
- Correct the harness connection between CIS J222-CISPU J2 if faulty.
- Check CPUB for proper installation and correct as necessary.
- Measure the voltage of CISPU J1-1.
- Control signal: CISPU J1-1 (DC12V)
- Location of electrical component: DF-714 5-B
- Measure the voltage of CIS J222-1, J222-2 and J222-5.
- Control signal: CIS J222-1 (DC5V), CIS J222-2 (DC5V), CIS J222-5 (DC12V)
- Location of electrical component: DF-714 6-B
- For any abnormality in the measurement result, replace the CIS cable.
- CIS F1 or F2conduction check
- Replace CIS. (Part# AAMNM70000)
- Replace CISPU. (Part# A3CEPP4Y00)
- Replace CPUB. (Part# AA2JH02N06)
- Replace BASEB. (Part# AA2JH02005)
Please search Knowledge Base articles and Bulletins as they may contain relevant information and updated Part information such as Part numbers.
L.3.15.2 (Link to the Field Service Manual)