05/2014
2-67
DC SC2020
Troubleshooting
CHAIN 42
Version 1.1
042-313 IOT Fan Motor Failure
BSD-ON:CH10.4
Abnormality in Fusing Exhaust Fan.
Procedure
Enter CE Mode and turn Digital Output[042-010] ON. Does the Fusing Exhaust Fan rotate?
YN
Check the power supply line of the Fusing Exhaust Fan (+24VDC). Is the Fusing Exhaust Fan
power supply normal?
YN
Check the power supply circuit to the Fusing Exhaust Fan.
Turn OFF the power and check the following:
• Disconnection, shortage or contact failure of wire between the Fusing Exhaust Fan and DRIVE
PWB J202.
• Disconnection, shortage or contact failure of wire between DRIVE PWB J1 and ESS PWB J6.
• Load towards the Fusing Exhaust Fan.
If no problem is found, replace the following parts in sequence:
• Fusing Exhaust Fan (PL 4.1)
• DRIVE PWB (PL 18.2)
Press [Stop] and turn OFF the power. Check for disconnection, shortage or contact failure of wire
between the Fusing Exhaust Fan and DRIVE PWB J202-3.
If no problem is found, replace the following parts in sequence:
• DRIVE PWB (PL 18.2)
• ESS PWB (PL 18.2)
• Fusing Exhaust Fan (PL 4.1)
042-325 (01h) Main Motor Fail
BSD-ON:CH4.1
Rotation abnormality of the Main Motor.
Procedure
Enter CE Mode and turn Digital Output[042-001] ON.. Does the Main Motor rotate?
YN
Check the power supply line of the Main Motor (+24VDC).. Is the Main Motor power supply nor-
mal?
YN
Check the power supply circuit to the Main Motor.
Turn OFF the power and check the following:
• Disconnection, shortage or contact failure of wire between Main Motor J208 and DRIVE PWB
J411.
• Disconnection, shortage or contact failure of wire between DRIVE PWB J1 and ESS PWB J6.
• The Drive Gear for wear, damage, and bearing blockage.
• Load towards the Main Motor.
If no problem is found, replace the following parts in sequence:
• Main Motor (PL 3.4)
• DRIVE PWB (PL 18.2)
Press [Stop] and turn OFF the power. Check for disconnection, shortage or contact failure of wire
between Main Motor J208-6 and DRIVE PWB J411-1.
If no problem is found, replace the following parts in sequence:
• DRIVE PWB (PL 18.2)
• ESS PWB (PL 18.2)
• Main Motor (PL 3.4)
042-325 (02h) YMC Link Sensor Fail
BSD-ON:CH9.9
Abnormality in YMC Link Sensor detection (Malfunction in switching drive between Color Mode and BW
Mode).
Procedure
Remove the Rear Cover. Enter CE Mode and turn Digital Output[042-009] (1st BTR Initialize) ON. The
FC/BW Drive Switch operation will be turned on.. Is the Operating Link Bar moving Up (or Down)?
YN
Turn OFF the power and check the following:
• Disconnection, shortage or contact failure of wire between DRIVE PWB J416 and YMC LINK
SOLENOID P211.
• Wear, damage of Gear type of the DRIVE, Link Bar.
If no problem is found, replace the following parts in sequence:
• DRIVE ASSEMBLY (PL 3.1)
• DRIVE PWB (PL 18.2)
• ESS PWB (PL 18.2)
Turn OFF the power and check the following:
• Dislocation, poor assembly of YMC LINK SOLENOID.
• Disconnection, shortage or contact failure of wire between DRIVE PWB J409 and YMC LINK SEN-
SOR P109.
If no problem is found, replace the following parts in sequence:
• DRIVE ASSEMBLY (PL 3.1)
• DRIVE PWB (PL 18.2)
• ESS PWB (PL 18.2)
042-326 Sub Motor Fail
BSD-ON:CH4.2
A
A
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