Ricoh Aficio SP4210N Service Manual Page 85

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Service Call Conditions
SM 4-7 M001
Trouble-
shooting
620
B
GAVD communication error
Defective engine board
Defective ASIC
The machine detects an error data of
the ASIC.
622
Paper tray unit communication error
Disconnect harnesses
Three consecutive errors occur
during polling, after the paper tray
unit is successful I2C
communication.
641
BICU control data transfer abnormal Defective controller board
External noise
Defective engine board
1. Replace the controller board.
2. Replace the engine board.
A sampling of the control data sent
from the BICU reveals an
abnormality.
669 B
EEPROM Error
The EEPROM was not connected at
power on, or read/write operations on
the EEPROM failed.
EEPROM connected
improperly
EEPROM missing
670 D
Engine startup error
The BCU failed to respond within the
prescribed time when the machine is
turn on.
Connections between BCU and
controller board are loose,
disconnected, or damaged
Replace the BCU
Replace the controller board
Rev. 11/03/2009
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA
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