Read Sharp AR-505 (serv.man8) Service Manual online
3) Execute SIM 8-1.
The DV bias can be measured without installing the OPC drum
and the developing unit.
and the developing unit.
4) When the output voltage is within the adjustment range, change
the displayed value and adjust. (1 step: about 1 V)
Adjustment range
AR-501/505
Others
Developing negative bias
voltage (Auto)
voltage (Auto)
–425
±
5V
–500
±
5V
Developing negative bias
voltage (Character)
voltage (Character)
–500
±
5V
–500
±
5V
Developing negative bias
voltage (Character, Photo)
voltage (Character, Photo)
–500
±
5V
–500
±
5V
Developing negative bias
voltage (Photo)
voltage (Photo)
–500
±
5V
–500
±
5V
Developing bias (Printer)
–500
±
5V
–500
±
5V
Developing positive bias voltage
+150
±
5V
+150
±
5V
(The value and the output voltage may not coincide.)
(4) Main charger grid voltage adjustment
1) Install the DV unit, the drum holder unit, and the charger units to
the copier.
2) Turn on the main switch, and execute SIM 8-2 to check the grid
voltage set value.
(Measurement at the high voltage PWB check point)
3) Remove the rear cabinet.
4) Connect the digital multi-meter to the grid voltage output check pin
(CN2-5 pin).
5) Set the digital multi-meter range to the DCV range.
(Use a digital multi-meter which allows measurement up to
DC1000 V.)
DC1000 V.)
6) Manually turn on the door switch.
7) Turn on the main switch, and execute SIM 8-2 to check.
8) If the output voltage is not in the specified range, change the
displayed value and adjust. (1 step: about 1V)
Adjustment range
AR-280/
285/ 335
AR-250/281/
286/336/405
286/336/405
AR-501/505
Grid voltage (Auto)
–642
±
5V
–602
±
5V
–570
±
5V
Grid voltage
(Character)
(Character)
–642
±
5V
–602
±
5V
–645
±
5V
Grid voltage
(Character, Photo)
(Character, Photo)
–642
±
5V
–602
±
5V
–645
±
5V
Grid voltage (Photo)
–642
±
5V
–602
±
5V
–645
±
5V
Grid voltage (Printer)
–642
±
5V
–602
±
5V
–645
±
5V
Grid voltage (FAX)
–642
±
5V
–602
±
5V
–645
±
5V
(The value and the output may not coincide.)
(5) Transfer charger current adjustment
a. Special measurement tool
UKOG-0110FCZZ
UK0G
-0110FCZZ
A
(QCLIZ0005FCZZ)
(QCLIZ0006FCZZ)
(QCLIZ0010FCZZ)
(QCLIZ0004FCZZ)
(QCLIZ0002FCZZ)
PHOG-0007FCZZ
QTIPH0017FCZZ
(VRN-RT2EK304F)
300K
Ω
X 2
Electrode sheet (UKOG-0110FCZZ)
Electrode sheet harness (DHAI-0304FCZZ)
Orange
Orange
Blue
White
Black
White
Red
(Parts arrangement)
Orange
White
Blue
Black
(Microswitch)
(QSW-M0118FCZZ)
Green
Blue
Black
Yellow
Red
AR-505
8/18/1999
6 – 3
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