SOURCE: My ricoh 2022 is giving me error code sc650 on my
Communication timeout error between
SBCU and duplex unit
650 B
The SBCU cannot receive a response
within 1 second from the duplex unit.
• Serial line connecting SBCU and
duplex unit unstable
• External noise
• SBCU board and duplex main board
connection defective or loose
• Duplex main board defective
• SBCU board defective
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