Ricoh M047 Service Manual page 153

Code No.
Fusing lamp stays on
The fusing lamp stays on more than
545 A
12 seconds after the main motor has
been turned off.
Zero cross signal malfunction
Zero cross signals are already
detected for 0.15 seconds before the
547 B fusing relay-on.
Zero cross signals are not detected
for 3 seconds or the machine cannot
detect a frequency.
Fusing jam error: 3 counts
At the fusing exit sensor the paper
559 A
jam is detected late for three pulse
counts (lag error) when SP1913-001
is set to "1: Yes".
Communication error - GAVD
620 B
The engine board detects an
unknown device.
Communication error - PFU
Three consecutive errors are
622 B
detected during polling after the PFU
is successfully detected by the
machine.
SM Appendix
CÓPIA NÃO CONTROLADA
Symptom
2-5
CÓPIA NÃO CONTROLADA
Service Call Conditions
Possible Cause
Fusing thermistor defective
Power supply board defective
Defective connection of the
fusing unit
Power supply board defective
Unstable main power supply
condition
Obstacle in the paper transport
path
Fusing unit installed incorrectly
Fusing unit defective
Engine board defective
Noise
Harness connection
disconnected between the
machine and PFU
M047