Copystar CS-1620, Service Manual

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2C9-2
1-5-18
C4200
(A4200*)
BD steady-state problem
The MIC detects a BD error for 600 ms
after the polygon motor rotation has
been stabilized.
Defective laser
diode. Replace the LSU.
Defective polygon
motor. Replace the LSU.
Defective main
PCB. Replace the main PCB and check for correct
operation.
Defective engine
PCB. Replace the engine PCB and check for cor-
rect operation.
C6000 Broken fixing heater wire
In fixing warm-up, the time to reach
50
°
C/122
°
F exceeds 13.5 s, the time to
reach 100
°
C/212
°
F exceeds 10 s, the
time to reach the primary stabilization
exceeds 10 s or the time to reach the
secondary stabilization exceeds 24 s.
Poor contact in the
thermistor connec-
tor terminals. Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Fixing thermistor
installed incor-
rectly. Check and reinstall if necessary.
Fixing thermostat
triggered. Check for continuity. If none, replace the fix-
ing thermostat.
Fixing heater M or
S installed incor-
rectly. Check and reinstall if necessary.
Broken fixing
heater M or S wire. Check for continuity. If none, replace the
heater lamp.
C6020 Abnormally high fixing unit ther-
mistor temperature
The fixing temperature exceeds 230
°
C/
446
°
F for 40 ms.
Shorted thermistor. Measure the resistance. If it is 0
Ω
, replace
the thermistor.
Broken heater con-
trol circuit on the
power supply PCB. Replace the power supply PCB and check
for correct operation.
C6050 Abnormally low fixing unit thermistor
temperature
The fixing temperature remains below
90
°
C/194
°
F for 1 s.
Poor contact in the
thermistor connec-
tor terminals. Reinsert the connector. Also check for conti-
nuity within the connector cable. If none,
remedy or replace the cable.
Broken fixing ther-
mistor wire.
Measure the resistance. If it is
∞ Ω
, replace
the fixing thermistor.
Fixing thermistor
installed incor-
rectly. Check and reinstall if necessary.
Fixing thermostat
triggered. Check for continuity. If none, replace the fix-
ing thermostat.
Fixing heater M or
S installed incor-
rectly. Check and reinstall if necessary.
Broken fixing
heater M or S wire. Check for continuity. If none, replace the fix-
ing heater M or S.
Code Contents
Remarks
Causes Check procedures/corrective measures
“A” is displayed on the operation panel.