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bizhub C4000i/C3300i
• Control signal: BASEB CN22EA-3 (ON)
• Location of electrical component: 12-C
4.
Replace CL4.
5.
Replace BASEB.
3.11.7 C720B
Contents
Trouble type
C720B: 1st transfer pressure clutch failure
Rank
C
Trouble detection condition After starting the clutch, an error is detected for the malfunction detection signal.
Trouble isolation
-
Relevant electrical parts
Procedure
1. Check the connector between CL1-relay CN13-BASEB CN18E for proper connection and correct as necessary.
2. Check the connector of CL1 for proper drive coupling and correct as necessary.
3. CL1 conduction check
• Control signal: BASEB CN18E-4 (ON)
• Location of electrical component: 2-C
4.
Replace the main drive unit.
5.
Replace BASEB.
3.11.8 C720D
Contents
Trouble type
C720D: ADU transport clutch failure
Rank
C
Trouble detection condition After starting the clutch, an error is detected for the malfunction detection signal.
Trouble isolation
-
Relevant electrical parts
Procedure
1. Check the connector between CL5-relay CN47-BASEB CN23E for proper connection and correct as necessary.
2. Check the connector of CL5 for proper drive coupling and correct as necessary.
3. CL5 conduction check
• Control signal: BASEB CN23E-12 (ON)
• Location of electrical component: 9-K
4.
Replace CL5.
5.
Replace BASEB.
3.11.9 C720E
Contents
Trouble type
C720E: ADU forward rotation clutch failure
Rank
C
Trouble detection condition After starting the clutch, an error is detected for the malfunction detection signal.
Trouble isolation
-
Relevant electrical parts
Procedure
1. Check the connector between CL6-relay CN11-BASEB CN18E for proper connection and correct as necessary.
2. Check the connector of CL6 for proper drive coupling and correct as necessary.
3. CL6 conduction check
• Control signal: BASEB CN18E-6 (ON)
• Location of electrical component: 2-C
4.
Replace CL6.
5.
Replace BASEB.
3.11.10 C720F
Contents
Trouble type
C720F: ADU reverse rotation clutch failure
Rank
C
Trouble detection condition After starting the clutch, an error is detected for the malfunction detection signal.
Trouble isolation
-
Relevant electrical parts
• 1st transfer pressure clutch (CL1)
• Base board (BASEB)
• ADU transport clutch (CL5)
• Base board (BASEB)
• ADU forward rotation clutch (CL6)
• Base board (BASEB)
• ADU reverse rotation clutch (CL7)
• Base board (BASEB)
L TROUBLESHOOTING > 3. TROUBLE CODE
L-38
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