Adjustments; Process Section - Sharp AR-M350U Service Manual

[9] ADJUSTMENTS

1 Process A High voltage output adjustment
section
2 Engine A LSU right angle adjustment
section
B Print off-center adjustment
C Resist quantity adjustment
3 Scanner A Scanner unit distortion adjustment
section
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
MC grid MAIN GRID (SIM 8-2)
Transfer current (THV+ (SIM 8-6)
Developing bias DV BIAS (SIM 8-1) AUTO
Separation voltage SHV (SIM 8-17) FRONT
Transfer voltage THV (SIM 8-17)
Adjustment item
AUTO AE mode
CHARACTER Text mode
MIX Text/Photo
mode
PHOTO Photo mode
PRINTER Printer mode
FAX Fax mode
FRONT Front
BACK Back
AE mode
CHARACTER Text mode
MIX Text/Photo
mode
PHOTO Photo mode
PRINTER Printer mode
FAX Fax mode
PLUS Positive bias
Front
BACK Rear
AR-M350 ADJUSTMENTS 9-1

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.
Default
Monitor output Set value
voltage
-650V±5V 645
-650V±5V 645
-650V±5V 645
-650V±5V 645
-650V±5V 645
-650V±5V 645
45PPM : 267
35PPM : 220
45PPM : 310
35PPM : 267
-500V±5V 485
-500V±5V 485
-500V±5V 485
-500V±5V 485
-500V±5V 485
-500V±5V 485
+150V±5V 150
+1.25V±0.1V 45PPM : 160
35PPM : 120
+1.25V±0.1V 45PPM : 160
35PPM : 120
-800V±10V 780
Set range Measurement High voltage
pin
impedance
200~900 CN2-7
200~900
200~900
200~900
200~900
200~900
0~620
0~620
0~745 CN2-1
0~745
0~745
0~745
0~745
0~745
0~255
0~375 CN2-3
0~375
0~1250 CN2-5
probe
100MΩ
100MΩ
10MΩ
10GΩ