Olivetti d-Color MF651 Service Manual page 768

18. MALFUNCTION CODE
Code
P-18 PC charge cleaning trouble 1
P-21 Color regist test pattern failure
P-22 Color regist adjust failure
P-27 Secondary transfer ATVC failure
P-31 K PC encoder sensor malfunction
P-32 Heating roller temperature sensor/1
temperature detection failure
708
Item
• Charging cleaner return sensor is not interrupted even
after the specified time has passed when the wire
cleaning material is moving forward.
* Under the situation above occurs, control will be
switched to the return operation after the warning is
given. When the charging cleaner home sensor is not
interrupted after the specified time has passed during
the return operation, trouble code C-2101 will be given.
• The number of points detected in the main scan direc-
tion is more or less than the specified value during
main scan direction registration correction.
• The number of points detected in the sub scan direction
is more or less than the specified value during sub scan
direction registration correction.
• The color shift amount is greater than the specified
range during main scan direction registration correction.
• The color shift amount is greater than the specified
range during sub scan direction registration correction.
• On the color shift test pattern, the maximum and mini-
mum deviations detected in the main and sub scan
directions go over the predetermined value.
• An abnormal average value is detected during an
adjustment of the second image transfer ATVC value.
• While the K PC drum motor is rotating at a stable pace
and lock signals are in an active (LOW=0) condition, an
abnormal encoder pulse width continues to be detected
over the predetermined period of time.
• During warm up, the temperature detected by the heat-
ing roller temperature sensor/1 exceeded the warm up
complete temperature of the heating roller for over the
predetermined value, and stayed for a predetermined
period of time.
• When the predetermined period of time had passed
after the warm up became complete, detected temper-
ature of the heating roller thermistor/1 exceeded the
temperature detected by the heating roller temperature
sensor/1 for over the predetermined value for more
than the predetermined period of time.
• While printing, temperature detected by the heating
roller thermistor/1 exceeded the temperature detected
by the heating roller temperature sensor/1 for more
than the predetermined value for a predetermined
period of time.
• This warning indicates that condensation dirt on the
heating roller temperature sensor/1 was detected, and
the alternate temperature control is being conducted.
With condensation, the warning is cleared when the
condensation is detected to be removed. When the dirt
on the sensor is detected, it is considered as a failure
and the trouble code C-392A is issued.
Service Manual
Field Service Ver. 2.0 Jul. 2009
Description
Y110571-1