Ricoh M0AJ SPC840DN

Cause

• TM (ID) sensor connector missing/connection error
• TM (ID) sensor detection window dirt
• TM (ID) sensor malfunction
• Undulation in the ITB, or belt slippage

Solution

Check if the SC occurs by turning the power OFF then ON. If the SC occurs again, do the following steps.

1. Check if all connectors related to TM/ID sensor are connected securely. Reconnect the connectors if they are disconnected, or loose.
2. If TM/ID sensor is contaminated, clean it with a damp cloth (never use a dry cloth or alcohol). Check if there is an abnormality on the image transfer belt surface.
3. If any abnormalities are found on the image transfer belt surface, replace the image transfer belt.
   • Belt scratched
   • Belt corrugation, belt skew
   • Cleaning failure
   • Background stains
   • Filming
4. Check the TM/ID sensor for malfunctions, and repair or replace it if there are any defects.
5. Check the harness. Replace the harness if it is damaged; connect it if it is disconnected.
6. If the SC is not cleared even after performing steps 1 to 5, replace the BCU.

Recovery Check Procedure

1. Execute Vsg adjustment with SP3-320-001(Vsg Adj: Execute :P Sensor).
2. Execute SP3-323-001 (Vsg Adj OK?: Latest) to check the code.
   • If the code is "1": Recovered
   • If the code is not "1": Not recovered

Adjustment after Recovery

After performing recovery for SC370, execute the following adjustment procedure.

1. Execute SP2-111-004 (Forced Line Position: Adj. Mode d).
2. Execute the following SPs and check the results:
   • SP2-194-007 (Execution Result)
   • SP2-194-010 (Error Result: C)
   • SP2-194-011 (Error Result: M)
   • SP2-194-012 (Error Result: Y)
   Execution result examples
   Factory default: 0
   Success: 1
3. Execute SP3-011-001 (Manual ProCon :Exe).
4. Execute the following SPs and check the results.
   • SP3-012-001 to 010 (Front)
   • SP3-012-011 to 020 (Center)
   • SP3-012-021 to 030 (Rear)
   Execution result examples (in order of YMCK from left)
   • Factory default: [00,00,00,00]
   • Starting adjust: [99,99,99,99]
   • Fail Vsg adjust (Y): [21,99,99,99]
   • Error of Development gamma Max (C): [99,99,55,99]
   • Success: [11,11,11,11]