Sharp AR-280 Service Manual page 98

(AR-250/280/281/285/286/335/336/405)
Default: 140 (13.5 + 1.5mA)
(AR-287/337)
Default: 190 (+13.5 to +15.0mA)
(AR-407)
Default: 200 (+15.0 to +16.5mA)
(AR-501/505)
Default: 255 (18.0+1.5mA)
(AR-507)
Default: 255 (18.0 to +19.5mA)
8 - 7
Purpose Adjustment/Operation test/check
Function Used to check and adjust the operation of the separa-
(Purpose) tion charger voltage and its control circuit.
Section Image process
(Photoconductor/
Developing/Transfer/
Cleaning)
Operation/ The separation charger output voltage in printing the
Procedure front and the back of paper 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.
7/13/2000
Others
7 – 17
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
manual paper feed tray)
BACK MODE: Back surface print (with duplex paper feed)
(AR-250/280/281/285/286/335/336)
Default: 90 (DC –140 ±10V)
(AR-405)
Default: 90 (DC –150 ±10V)
(AR-287/337)
Default: 135 (DC –140 ±10V)
(AR-407)
Default: 145 (DC –150 ±10V)
(AR-501/505/507)
Default: 177 (DC –200 ±10V)