Unit installation

AR-C330 SELF DIAG MESSAGE AND TROUBLESHOOTING 10 - 43
F2 87 Case 8 Trouble
position/
cause
Scanner (writing) unit
trouble (Scanner (writing)
motor trouble / Laser beam
sensor trouble / Internal
optical system dirt)
Remedy (Check) Check the
operation of the scanner
(writing) unit. (SIM 61-1)
(Repair) Replace the
scanner (writing) unit. /
Power Source-ON
(After-work) Adjust ADJM7/
ADJM9/ADJM10
Main
code
Sub
code
Title
Half tone correction trouble
F2 90 Phenomena Display Lamp
Message
Detail The max. value of the
difference (between colors)
between the half tone
correction value and the
previous correction value
exceeds the specified level.
Section Image process
Operation
mode
Image density correction
Note
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)
Main
code
Sub
code
Title
Half tone correction (2nd) patch
trouble (YELLOW)
F2 90 Case 3 Trouble
position/
cause
PCU SUB PWB trouble
Remedy (Check) Check the PCU
SUB PWB image density
sensor circuit.
(Repair) PCU SUB PWB
replacement / Power
Source-ON
(After-work)
Case 4 Trouble
position/
cause
PCU MAIN PWB trouble
Remedy (Check)
(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.)
Case 5 Trouble
position/
cause
Main charger output trouble
Remedy (Check) Main charger
contact check / Main
charger unit check / High
voltage power PWB, high
voltage interface PWB
check / Main charger output
voltage check
(Repair) Main charger unit
replacement / High voltage
power PWB, high voltage
interface PWB replacement
/ Main charger output
voltage adjustment (SIM 8-
2) / Power Source-ON
(After-work) Execute the
image density correction
(SIM 44-6). / Execute the
half tone density correction
(SIM 44-26).
Case 6 Trouble
position/
cause
Developing bias output
trouble
Remedy (Check) Developing bias
contact check / High voltage
PWB check / Developing
bias voltage check
(Repair) High voltage power
PWB replacement /
Developing bias output
voltage adjustment (SIM8-
1) / Power Source-ON
(After-work) Execute the
image density correction
(SIM 44-6). / Execute the
half tone density correction
(SIM 44-26).
Main
code
Sub
code
Title
Half tone correction trouble