Olivetti d-copia 1800 Service Manual page 127

Code
C4000 Polygon motor synchronization prob-
lem
The polygon motor does not reach the
stable speed within 20 s of the START
signal turning on.
C4010 Polygon motor steady-state problem
Stable OFF is detected for 5 s continu-
ously after polygon motor stability.
C4200 BD steady-state problem
ASIC detects a BD error for 600 ms after
the polygon motor rotation has been sta-
bilized.
C6000 Fuser heater break
The temperature does not reach 70 C/
158 F in 15 s before secondary stabiliza-
tion.
Temperature rise of 1 C/1.8 F does not
occur in 5 s before secondary stabiliza-
tion (except during printing).
C6020 Abnormally high fuser thermistor
temperature
Fuser thermistor is detected 230 C/
446 F or more for 40 ms.
Y110980-1
Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector YC3 on
connector termi- the main/engine PWB and laser scanner
nals. unit, and the continuity across the connector
terminals. Repair or replace if necessary.
Defective polygon Replace the laser scanner unit.
motor.
Defective main/ Replace the main/engine PWB and check
engine PWB. for correct operation.
Poor contact in the Check the connection of connector YC3 on
connector termi- the main/engine PWB and laser scanner
nals. unit, and the continuity across the connector
terminals. Repair or replace if necessary.
Defective polygon Replace the laser scanner unit.
motor.
Defective main/ Replace the main/engine PWB and check
engine PWB. for correct operation.
Poor contact in the Check the connection of connector YC3 on
connector termi- the main/engine PWB and laser scanner
nals. unit, and the continuity across the connector
terminals. Repair or replace if necessary.
Defective laser Replace the laser scanner unit.
scanner unit.
Defective main/ Replace the main/engine PWB and check
engine PWB. for correct operation.
Poor contact in the Reinsert the connector. Also check for conti-
fuser thermistor nuity within the connector cable. If none,
connector termi- remedy or replace the cable.
nals.
Fuser thermistor Check and reinstall if necessary.
installed incor-
rectly.
Fuser thermostat Check for continuity. If none, replace the
triggered. fuser thermostat.
Fuser heater Check and reinstall if necessary.
installed incor-
rectly.
Broken fuser Check for continuity. If none, replace the
heater wire. fuser heater.
Shorted thermistor. Measure the resistance. If it is 0 , replace
the thermistor.
Broken heater con- Replace the power source PWB and check
trol circuit on the for correct operation.
power source
PWB.
Service Manual
Remarks
2KL/2KK
1-4-19