I have a Savin Slp 38 that has a sc685 error.
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I did not find that SC code in the service manual.
The global knowledge base says 2 things: An HDD error, replace the HDD.
Or:
SBU-IPU communication errorSC685
During data transfer, a checksum error occurs.
During any operation except initialization, the SBU sends a hardware-reset acknowledgement to the IPU.
Loose connection between SBU and IPU
SBU board defective
IPU board defective
External noise
1. Turn the main switch off and on.
2. Shut out the external noise.
3. Check the cable connection of the scanner unit.
4. Replace the SBU board.
5. Replace the IPU board.
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