Sharp AR-M450

AR-M350 ADJUSTMENTS 9-1
[9] 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 and the frame.
6) The unit stops after 30 sec of output.
Adjustment item
1 Process
section
A High voltage output adjustment
2 Engine
section
A LSU right angle adjustment
B Print off-center adjustment
C Resist quantity adjustment
3 Scanner
section
A Scanner unit distortion adjustment
B OC scan distortion adjustment
C Vertical image distortion balance adjustment
D Vertical image distortion balance adjustment
E Vertical (sub scanning direction) distortion adjustment
F Original detection light emitting unit height adjustment
G Original size detection photo sensor check
H Original size detection photo sensor adjustment
I (D) SPF hinge height adjustment
J (D) SPF hinge diagonal adjustment (Front)
K Scan magnification ratio adjustment
L OC scan lead edge adjustment
M Original off-center adjustment
N Image density adjustment
O DSPF width detection adjustment
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 100MΩ
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
35PPM : 220
0~620
BACK Back 45PPM : 310
35PPM : 267
0~620
Developing bias DV BIAS (SIM 8-1) AUTO AE mode -500V±5V 485 0~745 CN2-1 100MΩ
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
35PPM : 120
0~375 CN2-3 10MΩ
BACK Rear +1.25V±0.1V 45PPM : 160
35PPM : 120
0~375
Transfer voltage THV (SIM 8-17) -800V±10V 780 0~1250 CN2-5 10GΩ
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