Contents
[1] PRODUCT OUTLINE . . . . . . . . . . . . . . . . . . . 1-1
1. Product features . . . . . . . . . . . . . . . . . . . . . . . . 1-1
2. System configuration (options) . . . . . . . . . . . . . 1-1
[2] PRODUCT SPECIFICATIONS . . . . . . . . . . 2-1
1. Basic specifications . . . . . . . . . . . . . . . . . . . . . . 2-1
2. Description of each section . . . . . . . . . . . . . . . . 2-2
3. Supply parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
4. Optional specifications . . . . . . . . . . . . . . . . . . . 2-4
(1) Automatic document feeder (ADF) . . . . . . 2-4
(2) Reverse automatic document feeder
(RADF) . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
(3) 10-bin sorter . . . . . . . . . . . . . . . . . . . . . . . 2-4
(4) 10-bin staple sorter (10-bin SS) . . . . . . . . 2-5
(5) Two-step paper feed unit . . . . . . . . . . . . . 2-5
(6) One-step paper feed unit . . . . . . . . . . . . . 2-5
(7) Exclusive-use desk . . . . . . . . . . . . . . . . . . 2-5
[3] PRODUCT VIEWS . . . . . . . . . . . . . . . . . . . . . . 3-1
1. External view and internal structure . . . . . . . . . 3-1
2. Operation panel . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
3. Clutches, solenoids, and motors (Explained
with the SF-2120 and the SF-CM15) . . . . . . . . 3-4
4. PWB (Explained with the SF-2120 and the
SF-CM15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
5. Sensors and switches (Explained with the
SF-2120 and the SF-CM15) . . . . . . . . . . . . . . . 3-6
6. Rollers, mirrors, etc. . . . . . . . . . . . . . . . . . . . . . 3-7
[4] UNPACKING AND INSTALLATION . . . . . 4-1
1. Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
2. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
(1) Environment . . . . . . . . . . . . . . . . . . . . . . . 4-1
(2) Space around the machine . . . . . . . . . . . . 4-2
(3) Installation base . . . . . . . . . . . . . . . . . . . . 4-2
(4) Power source . . . . . . . . . . . . . . . . . . . . . . 4-2
(5) Grounding wire connection . . . . . . . . . . . . 4-2
3. Optical system lock release . . . . . . . . . . . . . . . . 4-3
A. No. 2/3 mirror unit lock release . . . . . . . . . 4-3
B. Lens and No. 4/5 mirror unit lock release . 4-3
4. Charger cleaning . . . . . . . . . . . . . . . . . . . . . . . . 4-3
A. Main charger unit electrode cleaning . . . . 4-3
5. Developing unit setting . . . . . . . . . . . . . . . . . . . 4-4
A. Developing unit setting . . . . . . . . . . . . . . . 4-4
6. Toner density sensor level adjustment . . . . . . . 4-5
A. Developing unit level adjustment . . . . . . . 4-5
7. Accessory installation . . . . . . . . . . . . . . . . . . . . 4-5
A. Copier tray installation . . . . . . . . . . . . . . . 4-5
8. Toner supply . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
9. Center shift adjustment . . . . . . . . . . . . . . . . . . . 4-7
10. Label attachment . . . . . . . . . . . . . . . . . . . . . . . . 4-7
A. Label attachment . . . . . . . . . . . . . . . . . . . 4-7
11. Optional two-step paper feed unit
(SF-CM15) installation . . . . . . . . . . . . . . . . . . . 4-8
12. Optional one-step paper feed unit
(SF-CM16) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
13. Tray paper size selection . . . . . . . . . . . . . . . . 4-11
[5] DESCRIPTIONS OF EACH SECTION . . 5-1
(1) Paper feed section . . . . . . . . . . . . . . . . . . . . . . 5-1
1) General descriptions . . . . . . . . . . . . . . . . . 5-1
2) Basic operations . . . . . . . . . . . . . . . . . . . . 5-1
(2) Developing section . . . . . . . . . . . . . . . . . . . . . . 5-2
1) General descriptions . . . . . . . . . . . . . . . . . 5-2
2) Basic composition . . . . . . . . . . . . . . . . . . . 5-2
3) Basic operations . . . . . . . . . . . . . . . . . . . . 5-3
(3) Optical section . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
1. General description . . . . . . . . . . . . . . . . . 5-3
2. Basic operations . . . . . . . . . . . . . . . . . . . . 5-6
(4) Copy process . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
(1) Photoconductor . . . . . . . . . . . . . . . . . . . . 5-8
(2) Process diagram . . . . . . . . . . . . . . . . . . . . 5-9
(3) Details of image forming process . . . . . . 5-10
(4) Transition of photoconductor surface
potential . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
(5) Photoconductor drum sensitivity
correction . . . . . . . . . . . . . . . . . . . . . . . . 5-14
(6) Process control function . . . . . . . . . . . . . 5-14
(5) TRANSPORT/FUSING SECTION . . . . . . . . . 5-16
1) General . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
2) Basic composition and functions . . . . . . 5-16
(6) Fusing paper exit section . . . . . . . . . . . . . . . . 5-16
(7) High voltage section . . . . . . . . . . . . . . . . . . . . 5-17
1) General . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
2) Basic composition . . . . . . . . . . . . . . . . . . 5-17
(8) ADU unit (SF-1120 only) . . . . . . . . . . . . . . . . . 5-17
[6] DISASSEMBLY AND ASSEMBLY . . . . . . 6-1
1. Paper feed unit . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
1-1. Paper feed unit . . . . . . . . . . . . . . . . . . . . . 6-1
1-2. Paper feed roller ass’y removal . . . . . . . . 6-1
1-3. PS front roller ass’y . . . . . . . . . . . . . . . . . 6-2
1-4. Separation roller . . . . . . . . . . . . . . . . . . . . 6-2
1-5. Paper feed roller, take-up roller . . . . . . . . 6-2
1-6. Lower paper feed unit . . . . . . . . . . . . . . . . 6-3
1-7. Lower separation roller . . . . . . . . . . . . . . . 6-3
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