d-Color MF4003/MF3303
L TROUBLESHOOTING > 3. TROUBLE CODE
L-48
2.
Check the connector of CL2 for proper drive coupling and correct as necessary.
3.
CL2 conduction check
• Control signal: BASEB CN23E-10 (ON)
• Location of electrical component: 9-K
4.
5.
3.13.6 C720A
Contents
Trouble type
C720A: Registration 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
• Registration clutch (CL4)
• Base board (BASEB)
Procedure
1.
Check the connector between CL4-relay CN45-BASEB CN22E for proper connection and correct as necessary.
2.
Check the connector of CL4 for proper drive coupling and correct as necessary.
3.
CL4 conduction check
• Control signal: BASEB CN22EA-3 (ON)
• Location of electrical component: 12-C
4.
5.
3.13.7 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
• 1st transfer pressure clutch (CL1)
• Base board (BASEB)
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.
5.
3.13.8 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
• ADU transport clutch (CL5)
• Base board (BASEB)
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.
5.
3.13.9 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
-
Service Manual
Y119930-3
Summary of Contents for d-Color MF 4003
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