AR-M256/M257/M258/M316/M317/M318/5625/5631 ADJUSTMENTS, SETTING 7 - 1
[7] ADJUSTMENTS, SETTING
1. List of adjustment items
2. Copier adjustment
A. Process section
(1) Developing doctor gap adjustment
1) Loosen the developing doctor fixing screw A.
2) Insert a thickness gauge of 1.5mm to the three positions at 20mm
and 150mm from the both ends of the developing doctor as shown.
3) Tighten the developing doctor fixing screw.
4) Check the clearance of the developing doctor. If it is within the
specified range, then fix the doctor fixing screw with screw lock.
∗
When inserting a thickness gauge, be careful not to scratch the
developing doctor and the MG roller.
<Adjustment specification>
(2) MG roller main pole position adjustment
1) Put the developing unit on a flat surface.
2) Tie a needle or pin on a string.
3) Hold the string and bring the needle close to the MG roller horizon-
tally. (Do not use paper clip, which is too heavy to make a correct
adjustment.) (Put the developing unit horizontally for this adjust-
ment.)
4) Do not bring the needle into contact with the MG roller, but bring it
to a position 2 or 3mm apart from the MG roller. Mark the point on
the MG roller which is on the extension line from the needle tip.
5) Measure the distance from the marking position to the top of the
doctor plate of the developing unit to insure that it is 18mm.
If the distance is not within the specified range, loosen the fixing
screw A of the main pole adjustment plate, and move the adjust-
ment plate in the arrow direction to adjust.
Section
Adjustment item
Adjustment procedure/SIM No.
A
Process section
(1)
Developing doctor gap adjustment
Developing doctor gap adjustment
(2)
MG roller main pole position adjustment
MG roller main pole position adjustment
(3)
Developing bias voltage adjustment
SIM8-1
(4)
Grid bias voltage adjustment (High mode)
SIM8-2
(5)
Grid bias voltage adjustment (Low mode)
SIM8-3
B
Mechanism section
(1)
Print start position adjustment
SIM50-5
(2)
RSPF image lead edge position adjustment
SIM50-6
(3)
Rear edge void adjustment
SIM50-1
(4)
Paper off center adjustment
SIM50-10
(5)
Left edge void area adjustment
SIM50-1-8
(6)
Main scanning direction (FR direction) distortion
balance adjustment
No. 2/3 mirror base unit installing position
adjustment
Copy lamp unit installing position adjustment
(7)
Sub scanning direction (scanning direction)
distortion adjustment
Winding pulley position adjustment
(8)
Main scanning direction (FR direction) distortion
balance adjustment
Rail height adjustment
(9)
Main scanning direction (FR direction)
magnification ratio adjustment
SIM48-1-1
(10)
Sub scanning direction (scanning direction)
magnification ratio adjustment
a
OC mode in copying (SIM 48-1-2)
b
RSPF sub scanning direction magnification ratio
(SIM48-1-3, 48-1-4)
(11)
Off center adjustment (RSPF mode)
SIM50-12
(12)
OC (RSPF) open/close detection position
adjustment
SIM41-3
(13)
Original sensor adjustment
SIM41-2, 41-4 (41-1)
(14)
RSPF white correction pixel position adjustment
(required in an RSPF model when replacing the
lens unit)
SIM63-7
(15)
RSPF scan position auto adjustment
SIM53-8
C
Image density
(exposure) adjustment
(1)
Copy mode
SIM46-2
Developing doctor gap
F/R both ends (20mm from the both ends):1.5
+0.1mm
-0.15mm
C (Center)(150mm from the both ends):
1.55
+0.15mm
-0.2mm
20mm
10mm
150mm
10mm
20mm
F
C
R
DG:1.5
+0.1
- 0.15
DG:1.5
+0.1
- 0.15
DG:1.55
+0.15
- 0.2
A
A
A
A
