Mechanism Section; Image Position Adjustment; Developing Bias Voltage Check; Adjustment Specification - Sharp AR-M207 Service Manual

(3)Developing bias voltage check

Note: Use a digital multi-meter with an internal resistance of 10MΩ or
more.
1) Set the digital multi-meter range to DC700V.
2) Put the test rod of the digital multi-meter on the developing bias
voltage output check pin.
3) Turn on the power, execute SIM25-1.
<Specification>
Mode
Developing bias voltage
(4) Grid bias voltage check
Note: Use a digital multi-meter with an internal resistance of 10MΩ or
more.
1) Set the digital multi-meter range to DC700V.
2) Put the test rod of the digital multi-meter on the grid bias voltage
output check pin.
3) Turn on the power.
(The voltage is outputted in the grid bias High output mode during
warming up, and in the grid bias Low output mode when warming up
is completed.)
<Specification>
Mode
Grid bias LOW
Grid bias HIGH
Specification
DC - 400±8V
Specification
DC - 380±8V
DC - 525±10V
AR-M207 M165 M162 ADJUSTMENT 6-2
B. Mechanism section

(1) Image position adjustment

a. OC image lead edge position adjustment (SIM 50-1)
Note: In advance to this adjustment, the sub scanning magnification ratio
adjustment must be performed.
1) Set a scale on the OC table as shown below.
2) Make a copy.
3) Check the copy output. If necessary, perform the following
adjustment procedures.
4) Execute SIM 50-01.
Select a desired mode with the arrow keys, enter the adjustment
value with 10-key, and press [OK] key.
When [START] key is pressed, a sheet is printed.
When [RETURN] key is pressed, the process returns to the mode
selection window.
(Mode selection window 1)
Sim50-1 LEAD EDGE
1:TRAY1 50
2:TRAY2 50
3:MFT 50
1/2 [ 1- 99] 50
(Copy start window)
Ready to copy.
S
100%
8 1/2X11
<Adjustment specification>
Adjustment SIM Display
mode text array
OC image lead SIM RRC-A
edge position 50-1
Main cassette TRAY1
print start
position
2nd cassette TRAY2
print start
position
Multi bypass MFT
tray print start
position
Lead edge void DEN-A
5) Set the OC lead edge position set value (RRC-A) to [1]
The OC image scanning start position is shifted inside the document
edge.
6) Set the main cassette lead edge void adjustment value (DEN-A)* to [1]
The lead edge void becomes the minimum.
(Mode selection window 2)
Sim50-1 LEAD EDGE
4:DEN-A 50
5:RRC-A 1
6:DEN-B 50
2/2 [ 1- 99] 50
(Copy execution window)
Copies in progress.
S
100%
8 1/2X11
Set Spec Set
value value range
R/0.1 Lead edge 1 - 99
void:
1 - 4mm
H/0.1
Image loss:
3mm or
less
B/0.05