Olivetti d-Copia 300, Руководство по обслуживанию

Страница: 205 / 351

2FD/2FF/2FG
1-5-31
Code Contents
Remarks
Causes Check procedures/corrective measures
*: Optional
C6400
C6410
C6420
C7300
C7400
Zero-crossing signal problem
• The main PCB does not detect the
zero-crossing signal (Z CROSS SIG)
for the time specified below.
At power-on: 5 s
Others: 5 s
Fixing unit connector insertion prob-
lem
• Absence of the fixing unit is detected.
Fixing unit fuse cut problem
• The fixing temperature remains at 0
°C/32 °F for 30 s continuously when
the fixing heater is on.
Toner sensor problem
• While the toner container sensor is
on, the toner sensor in the developing
unit does not turn on after the toner
sensor turns off and toner is replen-
ished from the toner container.
(This code is not displayed. The service
call counter counts the frequency of
occurrence only as for this code.)
Image formation unit connector in-
sertion problem
• Absence of the image formation unit
is detected.
Poor contact in
the connector
terminals.
Defective power
source PCB.
Defective main
PCB.
Fixing unit con-
nector inserted
incorrectly.
Defective fixing
unit connector.
Poor contact in
the fixing unit
thermistor con-
nector terminals.
Broken fixing unit
thermistor wire.
Defective toner
sensor.
Poor contact in
the toner sensor
connector termi-
nals.
Defective toner
container sensor.
Defective toner
container.
Image formation
unit connector in-
serted incorrectly.
Defective image
formation unit
connector.
Check the connection of connectors YC1-3
on the main PCB and YC2-6 on the power
source PCB, and the continuity across the
connector terminals. Repair or replace if
necessary.
Check if the zero-crossing signal is output
from YC2-6 on the power source PCB. If
not, replace the power source PCB.
Replace the main PCB if C6400 is
detected while YC2-6 on the power source
PCB outputs the zero-crossing signal.
Reinsert the fixing unit connector if neces-
sary.
Replace the fixing unit.
Check the connection of connector YC10
on the main PCB and the continuity across
the connector terminals. Repair or replace
if necessary.
Measure the resistance. If it is
∞ Ω
, replace
the fixing unit thermistor.
Replace the toner sensor.
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Replace the toner container sensor.
Replace the toner container.
Reinsert the image formation unit connec-
tor if necessary.
Replace the image formation unit.