[8] ADJUSTMENT
No.
Item
Contents
Simulation
1
Developing
section
(1)
Adjusting developing doctor clearance
(2)
Adjusting developing magnet roller main pole position
(3)
Adjusting DV bias voltage
8-01
(4)
Pay attention to the following points when installing
developing unit rollers
(5)
Pay attention to the following points when attaching front
and rear developing side seals.
2
Process section
(1)
Adjusting high voltage output and balance
A Using special measurement tools
B Adjusting transfer charger current
8-06
C Adjusting main charger grid voltage
8-02
D Adjusting separation charger output
8-07
(2)
Precautions in maintaining high-voltage charger unit
A Main charger unit
B Transfer/separation charger unit
3
Laser unit
(1)
Checking printing by laser unit
(adjusting distortion by self-printing mode)
64-01
4
Optical section
(1)
Adjusting magnification in main-scanning direction
(2)
Adjusting magnification in sub-scanning direction
48-02
(3)
Adjusting distortion in longitudinal direction
(4)
Adjusting distortion in lateral direction
(5)
Adjusting leading edge position of copy
50-01, 50-02
5
Document
detection section
(1)
Adjusting document detection arm unit
41-01
(2)
Adjusting document detection level
41-02, 41-03
6
Others
(1)
Printing off-center
50-10, 50-11
(2)
Adjusting document off-center
A Document table
50-12
7
Paper tray 1/2
(1)
Adjust any center misalignment
8
Paper tray 3
(1)
Adjust any center misalignment
9
ADU
(1)
Adjust any matching guide
52-01
(2)
Adjust any center misalignment
10
RADF
(1)
Adjust any center misalignment
(2)
Document lead edge position adjustment
53
1. Developing section
(1) Adjusting developing doctor clearance
1
Remove the four screws securing the toner hopper and the
developer tank and 5-pin connector, to separate the toner tank
hopper from the developer tank.
2
Loosen the four screws
A
securing the DV doctor (2 at the front
and 2 at the rear frame).
3
Insert 0.05 mm clearance gauges at positions 50
∼
80 mm from
the end of the DV doctor.
4
Press the DV doctor in the direction indicated by the arrow, and
tighten the DV doctor fixing screws (4 screws both at the front and
rear frames).
5
Make sure the clearance is 0.55+0.03-0.03 at the positions 50
∼
80 mm from both ends of the DV doctors.
*
Note: Use caution not to damage the DV doctor or MG roller
when inserting clearance gauges.
0.55
0.03
0.03
A
A
50mm
50mm
30mm
30mm
8 – 1