Ricoh M001 Service Manual page 86

Service Call Conditions
Controller startup error
After power on, the line between the
controller and the operation panel did
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not open for normal operation.
After normal startup, communication
with the controller stopped.
PER-command error
The machine does not receive
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PAPI-PER command for specific
time, after PAPI-PES was issued.
PAPI-PES error
The machine does not receive
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PAPI-PES command after paper is in
registration.
Monitor error
This is a file detection and electronic
file signature check error when the
boot loader attempts to read the
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self-diagnostic module, system
kernel, or root system files from the
OS Flash ROM, or the items on the
SD card in the controller slot are false
or corrupted.
M001
Controller stalled
Controller installed incorrectly
Controller board defective
Operation panel harness
disconnected or defective
Defective controller
Defective controller
Poor communication
OS Flash ROM data defective;
change the controller firmware
SD card data defective; use
another SD card
4-8 SM