Unit installation

AR-C330 SELF DIAG MESSAGE AND TROUBLESHOOTING 10 - 26
Main
code
Sub
code
Title
Toner concentration sensor trouble
(YELLOW)
F2 43 Phenomena Display Lamp
Message
Detail Toner density sensor output
line open
Section Developing
Operation
mode
All modes
Note
Case 1 Trouble
position/
cause
Bad connection of the toner
density sensor, the process
control PWB, and the PCU
MAIN PWB
Remedy (Check) Check connections
of the toner density sensor,
the process control PWB,
and the PCU MAIN PWB.
(Repair) Replace the toner
density sensor. / Power
Source-ON
(After-work)
Case 2 Trouble
position/
cause
Process control PWB
trouble
Remedy (Check) Check the toner
density sensor output level
with SIM 25-1.
(Repair) Replace the
process control PWB. /
Power Source-ON
(After-work)
Case 3 Trouble
position/
cause
PCU MAIN PWB trouble
Remedy (Check) Check the toner
density sensor output level
with SIM 25-1.
(Repair) Replace the PCU
MAIN PWB. / Power
Source-ON
(After-work) Re-enter setup
values and adjustment
values. (Install the
EEPROM of the defective
PCU MAIN PWB to a new
PCU MAIN PWB.)
Main
code
Sub
code
Title
Image density sensor trouble
(BLACK) (Transfer belt surface
reflection abnormality)
F2 44 Phenomena Display Lamp
Message
Detail In the image density
correction, the transfer belt
surface is read by the
image density sensor and
the sensor gain is adjusted
so that the output becomes
a fixed value. However, the
output of the specified
range cannot be obtained
even though the sensor
gain is changed.
Section Image process (Transfer)
Operation
mode
Image density correction
Note Print is disabled in USA. For
the other destinations, print
is enabled. However, the
print density must be
forcibly decreased.
Case 1 Trouble
position/
cause
Image density sensor
trouble
Remedy (Check) Check the image
density sensor (dirt, output)
(SIM44-2) / Check the
image density sensor
calibration plate. / Check
the operation of the image
density sensor calibration
plate switching.
(Repair) Clean or replace
the image density sensor. /
Clean or replace the image
density sensor calibration
plate. / Replace the image
density sensor calibration
plate switch solenoid. /
Power Source-ON
(After-work) Adjust ADJ M6
Case 2 Trouble
position/
cause
Transfer belt trouble (dirt,
scratch)
Remedy (Check) Toner dispersion
from the transfer belt, the
OPC drum unit, and the
developing unit
(Repair) Clean or replace
the transfer belt. / Replace
the transfer belt cleaner. /
Clean the OPC drum and
the developing unit. / Power
Source-ON
(After-work)
Case 3 Trouble
position/
cause
PCU SUB PWB trouble
Remedy (Check) Check the PCU
SUM PWB image density
sensor circuit.
(Repair) PCU SUB PWB
replacement / Power
Source-ON
(After-work)