Adjustments - Sharp AL-1611 Service Manual

[ 7 ] ADJUSTMENTS

1. ADJUSTMENT ITEM LIST
Section
A Process section (1) Developing bias voltage output adjustment
(2) Main charger voltage output adjustment
B Mechanism section (1) Image lead edge position adjustment
(2) Main scanning direction (FR direction) distortion
balance adjustment
(3) Main scanning direction (FR direction) distortion adjust-
ment
(4) Sub scanning direction (scanning direction) distortion
adjustment
(5) Main scanning direction (FR direction) magnification
ratio adjustment
(6) Sub scanning direction (scanning direction)
magnification ratio adjustment
(7) Off center adjustment
(8) OC (SPF) open/close detection position adjustment
(9) Document size detection sensor
C Image density (1) Copy mode
adjustment
D SPF section (1)
(2)
(3)
2. COPIER ADJUSTMENT
A. Process section
(1) Developing bias voltage adjustment
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.
Adjustment item
4) Adjust the adjustment volume VR31 so that the output voltage is
<Adjustment specification>
Developing bias voltage
AL-1611/AL-1622 ADJUSTMENTS
7 – 1
Adjustment procedure/SIM No.
SIM 50-1
No. 2/3 mirror base unit installing position adjustment
Copy lamp unit installing position adjustment
Rail height adjustment
Winding pulley position adjustment
SIM 48-1
a OC mode in copying (SIM 48-2)
b SPF mode in copying (SIM 48-5)
c OC mode in FAX (SIM 48-6)
d SPF mode in FAX (SIM 48-7)
a OC mode (SIM 50-13)
b SPF mode (SIM 50-16)
OC (SPF) open/close detection position adjustment
SIM 41-3
SIM 46-1
SIM 48-5
SIM 50-16
SIM 52-16
within the specified range shown below.
Mode Specification
DC-400 8V VR31