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bizhub C4000i/C3300i
6.
Replace CPUB.
7. BASEB F20E conduction check
8.
Replace BASEB.
3.7.3 C2350
Contents
Trouble type
C2350: Toner suction fan failure to turn
Rank
B
Trouble detection condition The fan lock signal remains HIGH for a predetermined continuous period of time while the fan is turning.
Trouble isolation
-
Relevant electrical parts
Procedure
1. Check the connector between FM2-relay CN10-BASEB CN18E for proper connection and correct as necessary.
2. Check the fan for possible overload and correct as necessary.
3. Check CPUB for proper installation and correct as necessary.
4. FM2 load check
• Check code: 42
• Multi code: 3
• Control signal: BASEB CN18E-12 (REM), BASEB CN18E-14 (LOCK)
• Location of electrical component: 3-C
5.
Replace FM2.
6.
Replace CPUB.
7.
Replace BASEB.
3.7.4 C2411, C2412, C2413, C2414
Contents
Trouble type
Rank
B
Trouble detection condition The status with the new unit is not cleared after the new imaging unit is set.
Trouble isolation
-
Relevant electrical parts
Procedure
1. Reinstall the imaging unit.
2. Check the connector between the imaging unit/C-relay CN5-BASEB CN14E for proper connection and correct as necessary. (C2411)
3. Check the connector between the imaging unit/M-relay CN8-BASEB CN14E for proper connection and correct as necessary. (C2412)
4. Check the connector between the imaging unit/Y-relay CN7-BASEB CN14E for proper connection and correct as necessary. (C2413)
5. Check the connector between the imaging unit/K-relay CN6-BASEB CN14E for proper connection and correct as necessary. (C2414)
6. Check CPUB for proper installation and correct as necessary.
7.
Replace the corresponding imaging unit.
8.
Replace CPUB.
9.
Replace BASEB.
3.7.5 C2551, C2553, C2555, C2557
Contents
Trouble type
Rank
B
Trouble detection condition When sampling data is determined in TC ratio calculation control, TCR sensor output is lower than a
predetermined value for a predetermined number of times in a row even though there is toner in the toner
cartridge.
Trouble isolation
-
Relevant electrical parts
Procedure
1. Perform image troubleshooting procedure if image density is low.
• Toner suction fan (FM2)
• CPU board (CPUB)
• Base board (BASEB)
• C2411: Imaging unit/C new article release
• C2412: Imaging unit/M new article release
• C2413: Imaging unit/Y new article release
• C2414: Imaging unit/K new article release
• Imaging unit/C,M,Y,K
• CPU board (CPUB)
• Base board (BASEB)
• C2551: Abnormally low toner density detected cyan TCR sensor
• C2553: Abnormally low toner density detected magenta TCR sensor
• C2555: Abnormally low toner density detected yellow TCR sensor
• C2557: Abnormally low toner density detected black TCR sensor
• Imaging unit/C,M,Y,K
• Toner supply motor/YM (M4)
• Toner supply motor/CK (M5)
• CPU board (CPUB)
• Base board (BASEB)
L TROUBLESHOOTING > 3. TROUBLE CODE
L-26
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