Read Sharp AR-M351U / AR-M451U (serv.man16) Service Manual online
AR-M351U/M451U, AR-M355U/M455U ADJUSTMENTS 8 - 2
9) Move the adjustment plate in the arrow direction and adjust.
<Adjustment specification>
C. 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.
6) The unit stops after 30 sec of output.
Specification
Marking position
Measure from
the P surface above.
the P surface above.
54.2mm
P
Default
Set range
Measurement
pin
High voltage
probe
impedance
Monitor output voltage
Set value
MC grid MAIN GRID
(SIM 8-2)
(SIM 8-2)
AUTO
AE mode
45PPM: -650V±5V
35PPM: -620V±5V
35PPM: -620V±5V
45PPM: 645
35PPM: 615
35PPM: 615
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)
(THV+ (SIM 8-6)
FRONT
Front
45PPM: 267
35PPM: 220
35PPM: 220
0~620
BACK
Back
45PPM: 310
35PPM: 267
35PPM: 267
0~620
Developing bias DV
BIAS (SIM 8-1)
BIAS (SIM 8-1)
AUTO
AE mode
45PPM: -500V±5V
35PPM: -470V±5V
35PPM: -470V±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)
(SIM 8-17)
FRONT
Front
45PPM: +0.22±0.1V
35PPM: +1.37V±0.1V
45PPM: 160
35PPM: 120
35PPM: 120
0~240
CN2-3
10M
Ω
BACK
Rear
45PPM : +0.22±0.1V
35PPM: +1.37V±0.1V
45PPM: 160
35PPM: 120
35PPM: 120
0~240
Transfer voltage THV
(SIM 8-17)
(SIM 8-17)
-800V±10V
780
0~1250
CN2-5
10G
Ω
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