Read Sharp AR-505 (serv.man8) Service Manual online
b. Adjustment procedure
1) Remove the developing unit, the transfer/separation charger unit,
and the main charger unit from the copier.
2) Remove the process unit from the copier.
3) Remove the OPC drum from the process unit, and install the
electrode sheet by using a rubber band, tape, etc.
4) Install the OPC drum with the electrode sheet installed to the
process unit, and install the process unit to the copier.
5) Install the drum holder unit to the copier so that the electrode
sheet lead wire can be taken out from the developing unit side.
AR-280/285/335
AR-250/281/286/336/405/501/505
6) Clean the transfer charger wire separation lamp and install the
transfer/separation charger unit to the copier.
If necessary, wipe the lamp which can be seen from the square
hole of the TC guide rail with waste cloth.
hole of the TC guide rail with waste cloth.
(Do not install the main charger unit.)
7) Connect the electrode sheet and the digital multi-meter (or an
ampmeter). Manually turn on the door switch.
8) Check the drum current on the front frame side and the rear frame
side.
The current on the front and the rear frame sides: within 6.0uA
·
Turn on the main switch, and execute SIM 8-6.
(THVG will be turned ON for about 30 sec.)
·
Measure the drum current on the front frame side and the rear
frame side.
frame side.
·
When the microswitch is OFF, the drum current on the front
frame side is displayed.
frame side is displayed.
·
When the microswitch is ON, the drum current on the rear
frame side is displayed.
frame side is displayed.
·
Check that the current on the front and the rear frame side is
6.0
6.0
m
A or less.
If the current is greater than 6.0
m
A, replace the charger unit
with new one.
9) Adjust THVG output current.
·
Turn on the main switch and execute SIM 8-6.
AR-280/285/335
AR-250/281/286/336/405
AR-501/505
N/C
N/O COM
(OFF)
N/C
N/O COM
(ON)
AR-505
6 – 4
8/18/1999
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