Ricoh M080, Service Manual

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Service Call Conditions
M080 2-4 SM Appendix
500 B
Main motor error
ƒ
Main motor defective
ƒ
Mechanical overload on the
drive mechanism
The machine does not detect a main
motor lock signal within 700 ms after
the main motor started to rotate.
-or-
The machine detects a main motor lock
signal within 500 ms after the main
motor started to rotate, after that, the
main motor lock signal does not detect
within 200ms.
-or-
The machine does not detect a main
motor lock signal within 200 ms after
the main motor switched off.
541 A
Fusing thermistor error
ƒ
Thermistor disconnected,
defective
ƒ
Fusing lamp disconnected,
defective
ƒ
Fuse blown
ƒ
Power supply board defective
ƒ
Fusing unit connected
improperly
The fusing temperature did not rise
higher than 20°C within 10 sec. after
the main motor switched off.
-or-
The fusing temperature was detected
lower than 0
o
C for over 1 sec. after the
power relay switched on.
542 A
Fusing temperature warm-up error
ƒ
Thermistor defective
ƒ
Fusing lamp open
ƒ
Fusing thermostat open
ƒ
Power supply board Defective
ƒ
Defective connection of the
fusing unit
Just before reaching warm-up
temperature, the fusing temperature
did not rise above 80°C within 15.5 sec.
after the power relay switched on.