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Adjustment > When replacing parts > Imaging system > Pre-primary transfer charging assembly, Pre-primary transfer charging wire
Adjustment > When replacing parts > Imaging system > Pre-primary transfer charging assembly, Pre-primary transfer charging wire
Laser control system
■
Laser scanner unit
Procedure of parts
replacement
Refer to Removing Laser Scanner Unit
Procedure of
adjustment
There is no particular action required when the laser unit is replaced.
However, if the xing temperature is 50 ºC or higher when the unit is powered
ON, electropotential control will not be executed.
Therefore, when the laser scanner unit is replaced and the xing temperature
is 50 ºC or higher, it is necessary to enter the service mode described above
and perform forced execution of electropotential control.
Imaging system
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Primary charging assembly, Primary charging wire, Grid wire
Procedure of parts
replacement
Refer to Parts Replacement
Procedure of
adjustment
1) Execute cleaning of charging wire with a service mode.
(Cleaning of all charging wires : COPIER > FUNCTION > CLEANING >
WIRE-CLN)
2) Execute setting of development contrast and charging voltage with a service mode.
(Execution of voltage control : COPIER > FUNCTION > MISC-P > INTER-
EX)
3) Adjustment of primary charging assembly (after replacement of charging assembly)
In service mode, set to “5” for “COPIER > TEST > PG > TYPE” and press
the start key for test printing (halftone pattern), and check the printed image.
4) Perform a power-cycle of main power (OFF / ON)
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T-5-4
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Pre-primary transfer charging assembly, Pre-primary transfer
charging wire
Procedure of parts
replacement
Refer to Removing Pre-Primary Transfer Charging Assembly
Refer to Replacing Pre-Primary Transfer Charging Wire
Procedure of
adjustment
1) Perform cleaning of accumulated toner at dust & toner collecting area with
vacuum cleaner.
[A]
2) Execute cleaning of charging wire with a service mode
(Cleaning of all charging wires : COPIER > FUNCTION > CLEANINNG >
WIRE-CLN)
3) Execute setting of development contrast and charging voltage with a service
mode.
(Execution of voltage control : COPIER > FUNCTION > MISC-P > INTER-
EX)
4) Perform a power-cycle of main power (OFF / ON)
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