Sharp AR-280 Service Manual page 97

8 - 2
Purpose Adjustment/Operation test/check
Function Used to check and adjust the operation of the main
(Purpose) charger grid voltage in each print mode and the control
circuit. (for OPC drum type B)
Section Image process (Photoconductor/Developing/Transfer/
Cleaning)
Operation/ (The charging/grid output voltage in each print mode
Procedure can be adjusted and checked.)
1. Select the print mode with [­] key and [¯]key.
2. Enter the adjustment value with the 10-key pad.
3. Press the [EXECUTE] key.
The [EXECUTE] key is highlighted, the adjustment value entered in
procedure 2 is set, and the voltage corresponding to the set value is
supplied.
After supplying the voltage for 30 sec, the [EXECUTE] key returns to
the normal display.
If the [EXECUTE] key is pressed while the voltage is supplied, the
voltage output is stopped and the [EXECUTE] key returns to the nor-
mal display.
(AR-250/280/281/285/286/335/336/405)
AUTO : Auto mode
CHARA : Character mode
: Character/Photo mode * (641) (–642 ±5V)
CHARA PHOTO
PHOTO : Photo mode
PRINTER : Printer mode
* ( ): Default
(AR-287/337/407)
AUTO : Auto mode
CHARA : Character mode
: Character/Photo mode * (602) (–603 ±5V)
CHARA PHOTO
PHOTO : Photo mode
PRINTER : Printer mode
* ( ): Default
(AR-501/505/507)
* ( ): Default
* (641) (–642 ±5V)
* (641) (–642 ±5V)
* (641) (–642 ±5V)
* (641) (–642 ±5V)
1. Select the print mode with [­] key and [¯] key.
* (602) (–603 ±5V)
2. Enter the adjustment value with the 10-key pad.
* (602) (–603 ±5V)
3. Press the [EXECUTE] key.
The [EXECUTE] key is highlighted, the adjustment value entered in
* (602) (–603 ±5V)
procedure 2 is set, and the voltage corresponding to the set value is
* (602) (–603 ±5V) supplied.
After supplying the voltage for 30 sec, the [EXECUTE] key returns to
the normal display.
If the [EXECUTE] key is pressed while the voltage is supplied, the
voltage output is stopped and the [EXECUTE] key returns to the nor-
mal display.
FROMT MODE: Front surface print (with the paper feed tray and
BACK MODE: Back surface print (with duplex paper feed)
7 – 16
AUTO : Auto mode
CHARA : Character mode
: Character/Photo mode * (635) (–645 ±5V)
CHARA PHOTO
PHOTO : Photo mode
PRINTER : Printer mode
8 - 6
Purpose Adjustment/Operation test/check
Function Used to check and adjust the transfer charger current
(Purpose) and the control circuit.
Section Image process
(Photoconductor/
Developing/Transfer/
Cleaning)
Operation/ The transfer charger output voltage in printing the front
Procedure and the back of paper can be adjusted and checked.
manual paper feed tray)
* (560) (–570 ±5V)
* (635) (–645 ±5V)
* (635) (–645 ±5V)
* (635) (–645 ±5V)
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7/13/2000