Olivetti d-Copia 600, Руководство по обслуживанию

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1-5-38
C7810 Short-circuited external thermistor
• The thermistor input value is 0.5 V or
less.
Poor contact in the
connector termi-
nals. Check the connection of connector YC13 on
the engine PWB and the continuity across
the connector terminals. Repair or replace if
necessary.
Defective humidity
sensor. Replace the humidity sensor.
C8010 Document finisher* paper conveying
motor problem
• The LOCK signal of the paper convey-
ing motor is detected for more than
500 ms while the paper conveying
motor is operating.
However, the first 1 s after the paper
conveying motor is turned on is
excluded from detection.
Loose connection
of the paper con-
veying motor con-
nector. Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective paper
conveying motor. Replace the paper conveying motor and
check for correct operation.
Defective finisher
main PWB. Replace the finisher main PWB and check
for correct operation.
C8020 Document finisher* punch motor
problem
• The LOCK signal of the punch motor is
detected for more than 500 ms while
the punch motor is operating.
However, the first 1 s after the punch
motor is turned on is excluded from
detection.
Loose connection
of the punch motor
connector. Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Defective punch
motor. Replace the punch motor and check for cor-
rect operation.
Defective finisher
main PWB. Replace the finisher main PWB and check
for correct operation.
C8030 Document finisher* upper paper con-
veying belt problem
• During initialization, the intermediate
tray upper sliding plate is not detected
in the home position within 3 s after
the belt returns to the home position.
JAM87 is indicated the first time this
problem occurs. If the problem reoc-
curs after initialization when the front
cover is opened and closed, the prob-
lem is in the upper paper conveying
belt.
• When the intermediate tray upper slid-
ing plate is operated from the home
position, the upper paper conveying
belt home position sensor does not
turn off within 1 s.
Phase shift of the
upper paper con-
veying belt. Correct the phase of the upper paper con-
veying belt and check for correct operation.
Malfunction of the
upper paper con-
veying belt motor. Replace the upper paper conveying belt
motor and check for correct operation.
Malfunction of the
upper paper con-
veying belt home
position sensor. Replace the upper paper conveying belt
home position sensor and check for correct
operation.
Loose connection
of the upper paper
conveying belt
home position sen-
sor connector. Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Incorrect insertion
of the intermediate
tray. Check whether the intermediate tray
catches are damaged.
Defective finisher
main PWB. Replace the finisher main PWB and check
for correct operation.
Code Contents
Remarks
Causes Check procedures/corrective measures
Service Manual Y104350-7