AR-M280U ADJUSTMENTS 8-1
[8] ADJUSTMENTS
1. Process section
A. High voltage output adjustment
(1) Developing bias output check and setup
1) Remove the rear cabinet to allow checking of the high voltage
monitor output pin.
2) Execute the simulation of the target high voltage.
(See the table below.)
3) Select the mode to be set with 10-key, and press START key.
4) Enter the set value with 10-key and press START key. The set value
is outputted for 30 sec.
5) Apply a high voltage tester between the measurement pin and the
frame.
Note: Take care not to short the measuring pin to the frame.
6) The unit stops after 30 sec of output.
2. Engine section
A. Resist quantity setup
•This adjustment requires a high level of accuracy.
We recommend using the default setting.
This adjustment is performed in the following cases:
•When the void quantity is changed by the paper feed tray.
•When paper is skewed.
Complete the following adjustments before performing resist quantity
setup.
•LSU right angle adjustment
•Print magnification ratio adjustment
•Print off-center setup
•Void area setup
1) Execute SIM 51-2.
2) Adjust the resist quantity so that paper transport is stable.
<Factory setup value>
Default
Set range
Measurement
pin
High voltage
probe
impedance
Monitor output
voltage
Set value
MC grid MAIN GRID
(SIM 8-2)
AUTO
AE mode
-650V±5V
645
200~900
CN2-7
100M
Ω
CHARACTER Text mode
-650V±5V
645
200~900
MIX
Text/Photo
mode
-650V±5V
645
200~900
PHOTO
Photo mode
-650V±5V
645
200~900
PRINTER
Printer mode
-650V±5V
645
200~900
FAX
Fax mode
-650V±5V
645
200~900
Transfer current THV+
(SIM 8-6)
FRONT
Front
45PPM : 267
28/35PPM : 220
0~620
BACK
Back
45PPM : 310
28/35PPM : 267
0~620
Developing bias DV BIAS
(SIM 8-1)
AUTO
AE mode
-500V±5V
485
0~745
CN2-1
100M
Ω
CHARACTER Text mode
-500V±5V
485
0~745
MIX
Text/Photo
mode
-500V±5V
485
0~745
PHOTO
Photo mode
-500V±5V
485
0~745
PRINTER
Printer mode
-500V±5V
485
0~745
FAX
Fax mode
-500V±5V
485
0~745
PLUS
Positive bias
+150V±5V
150
0~255
Separation voltage SHV
(SIM 8-17)
FRONT
Front
+1.25V±0.1V
45PPM : 160
28/35PPM : 120
0~375
CN2-3
10M
Ω
BACK
Rear
+1.25V±0.1V
45PPM : 160
28/35PPM : 120
0~375
Transfer voltage THV
(SIM 8-17)
-800V±10V
780
0~1250
CN2-5
10G
Ω
45PPM
BPT
55
T1
60
T2
50
DESK
50
ADU
50
28/35PPM
BPT
60
T1
65
T2
55
DESK
55
ADU
55
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