Ricoh MP C6502SP Field Service Manual page 1170

5. Troubleshooting
SC No.
SC No.
SC664-01
SC664-02
SC664-03
1168
Level Error Name/Error Condition/Major Cause/Solution
ASAP communication protocol error
• A BREAK signal was detected at power-on.
• Non-response (100 ms) was detected 3 times consecutively during
normal operation.
• NAK was received 3 times before ACK was received during normal
operation.
• A BREAK signal was detected during normal operation.
• TSB defective
• IOB defective
• Harness between TSB and IOB broken
• Connecter between TSB and IOB disconnected
• Unintended electrical noise
• Replace the TSB.
• Replace the IOB.
• Replace the harness between TSB and IOB.
• Replace the connector between TSB and IOB.
Level Error Name/Error Condition/Major Cause/Solution
D
D VODKA SRAM program expansion error
D
VODKA1
SC664-01: VODKA SRAM access permission error (Write permission
denied)
SC664-02: VODKA SRAM write error (write result abnormal)
SC664-03: VODKA program startup error
• Electric noises and hardware defect
• IOB replacement, harness check