Filter
Top Products
1-8. Transport roller . . . . . . . . . . . . . . . . . . . . . 6-3
1-9. Lower paper feed roller/take-up roller . . . 6-3
2. Transport unit . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
2-1. Resist roller, transfer roller . . . . . . . . . . . . 6-3
2-2. Transport belt . . . . . . . . . . . . . . . . . . . . . . 6-4
3. Fusing section . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
3-1. Fusing unit removal . . . . . . . . . . . . . . . . . . 6-5
3-2. Heater lamp replacement . . . . . . . . . . . . . 6-5
3-3. Upper heat roller ass’y removal . . . . . . . . 6-5
3-4. Upper separation pawl replacement . . . . . 6-6
3-5. Lower heat roller replacement . . . . . . . . . 6-6
3-6. Lower separation pawl replacement . . . . . 6-6
3-7. Thermistor/thermostat removal . . . . . . . . . 6-7
4. Optical system . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
1) Copy lamp replacement . . . . . . . . . . . . . . 6-7
2) Mirror base wire replacement and
adjustment . . . . . . . . . . . . . . . . . . . . . . . . 6-7
3) No. 2/3 mirror unit (mirror base B)
installation (Mirror base B positioning) . . 6-10
4) Copy lamp unit installation
(Mirror base A positioning) . . . . . . . . . . . 6-11
5) No. 4/5 mirror unit (mirror base C)
replacement . . . . . . . . . . . . . . . . . . . . . . 6-11
6) Lens wire replacement . . . . . . . . . . . . . . 6-13
7) Lens unit replacement . . . . . . . . . . . . . . 6-15
5. High voltage section . . . . . . . . . . . . . . . . . . . . 6-16
5-1. Main charger (MC) unit . . . . . . . . . . . . . . 6-16
5-2. Transfer/separation charger (TC/SC)
unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-17
6. Process section . . . . . . . . . . . . . . . . . . . . . . . 6-17
6-1. Process unit . . . . . . . . . . . . . . . . . . . . . . 6-17
6-2. Waste toner bottle replacement
(required when waste toner full detection/
maintenance) . . . . . . . . . . . . . . . . . . . . . 6-18
6-3. Drum (Replace every 50K copies) . . . . . 6-19
6-4. Blank lamp unit
(Clean every 50K copies.) . . . . . . . . . . . 6-19
6-5. Discharge lamp unit
(Clean every 50K copies.) . . . . . . . . . . . 6-19
6-6. Cleaner blade
(Replace every 50K copies.) . . . . . . . . . . 6-20
6-7. Drum separation pawl
(Replace every 50K copies.) . . . . . . . . . . 6-20
6-8. Process control PWB (Clean the sensor
section every 50K copies.) . . . . . . . . . . . 6-20
6-9. Drum mark sensor PWB (Clean the sensor
section every 50K copies.) . . . . . . . . . . . 6-20
6-10. Toner reception seal (Replace every 50K
copies.) . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20
7. Developing section . . . . . . . . . . . . . . . . . . . . . 6-20
A. DV side seals F/R replacement
(Replace every 120K copies.) . . . . . . . . . 6-20
B. DB blade replacement
(Replace every 120K copies.) . . . . . . . . 6-21
C. V ring attachment . . . . . . . . . . . . . . . . . . 6-21
D. Note for toner hopper drive gear (31T)
and stirring shaft attachment . . . . . . . . . 6-21
G. Developing unit color identification . . . . . 6-22
8. Operation panel/intermediate cabinet . . . . . . . 6-22
9. Frame major parts . . . . . . . . . . . . . . . . . . . . . . 6-22
9-1. Cooling fan motor replacement . . . . . . . 6-22
9-2. Power unit . . . . . . . . . . . . . . . . . . . . . . . . 6-23
9-3. Tray size detecting PWB . . . . . . . . . . . . 6-23
9-4. Main PWB unit . . . . . . . . . . . . . . . . . . . . 6-24
9-5. AC power PWB . . . . . . . . . . . . . . . . . . . . 6-24
9-6. Ozone filter (Check every 50K copies,
and clean every 100K copies.) . . . . . . . . 6-24
10. Multi paper feed unit (SF-MF15: option) . . . . . 6-25
10-1. Separation roller . . . . . . . . . . . . . . . . . . . 6-25
10-2. Take-up roller/paper feed roller . . . . . . . 6-25
11. ADU (SF-1120 only) . . . . . . . . . . . . . . . . . . . . 6-26
12. Paper feed unit
(SF-CM15, SF-CM16, option) . . . . . . . . . . . . . 6-27
[7] ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . 7-1
1. Developing section . . . . . . . . . . . . . . . . . . . . . . 7-1
1-1. Developing doctor clearance
adjustment . . . . . . . . . . . . . . . . . . . . . . . . 7-1
1-2. Developing magnet roller main pole
position adjustment . . . . . . . . . . . . . . . . . . 7-1
2. Optical system . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
2-1. Adjustment items . . . . . . . . . . . . . . . . . . . 7-2
2-2. Note for adjustments . . . . . . . . . . . . . . . . 7-3
2-3. Adjustment of each section . . . . . . . . . . . 7-4
A. Lens reference position adjustment . . . . . 7-4
B. No.4/5 mirror reference position
adjustment . . . . . . . . . . . . . . . . . . . . . . . . 7-4
C. Vertical copy magnification ratio
adjustment . . . . . . . . . . . . . . . . . . . . . . . . 7-5
D. Resolution adjustment
(Focus adjustment) . . . . . . . . . . . . . . . . . . 7-6
E. Horizontal copy magnification ratio
adjustment . . . . . . . . . . . . . . . . . . . . . . . . 7-8
F. Comparison table of lens values and
simulation input values . . . . . . . . . . . . . . . 7-9
G. Vertical skew adjsutment . . . . . . . . . . . . 7-10
H. Horizontal skew adjustment . . . . . . . . . . 7-10
I. Center shift adjustment . . . . . . . . . . . . . . 7-12
J. Exposure balance adjustment . . . . . . . . 7-12
K. Copy lead edge adjustment . . . . . . . . . . 7-13
2-4. Original detecting section . . . . . . . . . . . . 7-15
A. Original detecting arm unit adjustment . . 7-15
B. Original detecting level adjustment . . . . 7-16
2-5. Copy density adjustment . . . . . . . . . . . . 7-17