Unit installation

AR-C330 SELF DIAG MESSAGE AND TROUBLESHOOTING 10 - 10
Main
code
Sub
code
Title
Toner concentration reference
control level setup trouble
(Overtoner)
EE EL Phenomena Display Lamp
EE EL
Message
Detail When setting the toner
concentration reference
control level, the toner
concentration sensor output
is not within the specified
range. (The output level is
77 or less.)
Section Image process
(Developing)
Operation
mode
SIM 25-2
Note
Case 1 Trouble
position/
cause
Toner density sensor
trouble / Toner density
sensor signal line
connection trouble
Remedy (Check) Check the toner
concentration output level
with SIM 25-2.
(Repair) Toner
concentration sensor
replacement (Developing
unit replacement) / Power
Source-ON
(After-work) Execute ADJ
M3.
Case 2 Trouble
position/
cause
Process control PWB
trouble
Remedy (Check)
(Repair) Process control
PWB replacement / Power
Source-ON
(After-work)
Case 3 Trouble
position/
cause
PCU MAIN PWB trouble
Remedy (Check)
(Repair) PCU MAIN PWB
replacement / Power
Source-ON
(After-work) Re-enter the
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
Toner concentration reference
control level setup trouble
(Undertoner)
EE EU Phenomena Display Lamp
Message
Detail When setting the toner
concentration reference
control level, the toner
concentration sensor output
is not within the specified
range. (The output level
is179 or above.)
Section Image process
(Developing)
Operation
mode
SIM 25-2
Note
Case 1 Trouble
position/
cause
Toner density sensor
trouble / Toner density
sensor signal line
connection trouble
Remedy (Check) Check the toner
concentration output level
with SIM 25-2.
(Repair) Toner
concentration sensor
replacement (Developing
unit replacement) / Power
Source-ON
(After-work) Execute ADJ
M3.
Case 2 Trouble
position/
cause
Process control PWB
trouble
Remedy (Check) Check the toner
concentration sensor output
level with SIM 25-2.
(Repair) Process control
PWB replacement / Power
Source-ON
(After-work)
Case 3 Trouble
position/
cause
PCU MAIN PWB trouble
Remedy (Check) Check the toner
concentration sensor output
level with SIM 25-2.
(Repair) PCU MAIN PWB
replacement / Power
Source-ON
(After-work) Re-enter the
setup values and
adjustment values. (Install
the EEPROM of the
defective PCU MAIN PWB
to a new PCU MAIN PWB.)