Ricoh G176 Service Manual page 76

Service Call Conditions
Note: SP1913 determines whether SC559 is issued. The default is off.
SC559 is not issued after three consecutive jams in the paper unit. If
SP1913 is set to on, turning the machine power off/on does not reset the jam
counter.
Fan motor error
The machine detected an error in the
590 B
fusing unit fan or the PSU fan. Either
or both fan motors started to rotate
within 10 sec. after power on.
Communication error - duplex unit
The engine board could not
communicate with the duplex unit.
610 B
(The duplex unit did not respond
within 1 sec. to a status request.)
Note: This SC is logged, not
displayed.
Communication error – GAVD I2C
The engine board detected an unknown
device on the I2C I/F bus (internal bus on
the engine control board).
650 B
The engine board detected an I2C I/F bus
error.
The number of devices connected to the
I2C bus exceeded 12.
G176/G177/G176L
Fan motor disconnected,
defective
Fan motor harness loose,
broken, defective
Defective connection between
engine board and duplex unit
Engine board defective
Duplex control board defective
Engine board defective
4-6
Rev. 10/27/2009
SM