Ricoh B064 SERIES Service Manual page 461

SC No.
545 A Fusing lamp overheat error 2
After hot roller reaches the warm-
up temperature, the fusing lamps
continued full capacity output for 55
s without the hot roller rotating (for
a total of 45s).
547 D Zero cross signal malfunction
One of the following conditions is
detected 10 times:
• When the main switch is on, the
frequency measured by the
number of zero cross signals for
500 ms is larger than 66Hz or
smaller than 45 Hz.
• The interval between one zero
cross signal and the next is 7.5
ms or shorter 3 times
consecutively for 500 ms.
550 A Fusing Web End
Web end detected 5 times within
500 ms and web motor continues to
rotate 40 s. If web end is detected
for another 400 ms, then the SC is
logged.
590 D Toner collection motor error
The toner collection motor sensor
output does not change for 3
seconds while the toner collection
motor is on.
599 D 1-bin Exit Motor Error (should only occur in Japanese models)
The transport lock sensor output
does not change within 300 ms
after the motor switches on.
SM
CÓPIA NÃO CONTROLADA
Symptom
4-23
CÓPIA NÃO CONTROLADA
B064 SERIES SERVICE MODE
Possible Cause
• Fusing thermistor out of position
• Noise on the ac power line
• Web end (requires replacement)
• Web end sensor defective
Note: After replacing the web with a new
one, reset SP1902 001 to 0 to
release SC550.
• Toner collection motor defective
• Motor drive defective
• Toner collection motor sensor connector
defective
• Motor overload
• Motor overload
• Motor drive defective
B064 Series/B140 Series
/B246 Series/D052 Series