Ricoh MP C2504 Field Service Manual page 936

Service Call 816-899
No. Type Error Name/Error Condition/Major Cause/Solution
SC834-00 D Self-diagnostic error: Optional memory
[5101] Engine I/F optional memory verify error
An error occurs after write/verify check for optional RAM on the engine
I/F board (mother board).
Defective memory device
Replace the Engine I/F board (mother board).
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