Ricoh 4220, 4222 Service Manual

IMPORTANT SAFETY NOTICES

PREVENTION OF PHYS ICAL INJURY

1. Before disassembling or asse mblin g pa rts of the copie r and perip herals, make sure that the copier power cord is unplu gg ed.

2. The wall outlet should be near the copier an d easily accessible.

3. Note that some compo ne nt s of th e copier and the paper tray unit are supplied with electrical voltage even if the main switch is turned off.

4. If any adjustment or operat ion check has to be made with exterior covers off or open while the main switch is turned on, keep hands away from electrified or mechanically drive n comp on ents.

5. The inside and the met al parts of the fusing unit become extre mely ho t while the copier is operat ing . Be ca ref ul to avoid touching those components with your bare hands.

HEALTH SAFETY CONDITIONS

1. Never operate the copier without the ozon e filt er inst alle d.

2. Always replace the ozone filter with the specified one at the specifie d interval.

3. Toner and developer are non-toxic, but if you get either of them in your eyes by accident, it may cause temp ora ry e ye disco mfo rt. Try to remove with eye drops or flush with wat er as first aid. If un succe ssfu l, ge t med ical attention.

OBSERVANCE OF ELECTRICAL SAFETY STANDARDS

1. The copier and its peripheral must be installed and maintained by a customer service represen tative who has completed the training course on those models.

– CAUTION –

2. The RAM pack has a lithium battery which can explod e if hand led incorrectly, replace only with same RAM pack. Do not recharge, or burn this battery. Used RAM pack must be handle d in accordance with local regulations.

SAFETY AND ECOLOGICAL NOTES FOR DISP OS AL

1. Do not incinerate the toner cartridge or the used toner. Toner dust may ignite suddenly when exposed to open flame.

2. Dispose of used tone r, developer, and organic photoconductors according to local regulations. (These are non-toxic supplies.)

3. Dispose of replaced parts in acco rda nce with local regulations.

1. OVERALL MACHINE INFORMATION

1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

2. COPY PROCESSES AROUND THE DRUM . . . . . . . . . . . . . . . . . . . 1-4

3. COPY PROCESS CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

4. MECHANICAL COMPONENT LAYOUT . . . . . . . . . . . . . . . . . . . . . . 1-7

5. DRIVE LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

6. ELECTRICAL COMPONENT LAYOUT . . . . . . . . . . . . . . . . . . . . . . 1-10

7. ELECTRICAL COMPONENT DESCRIPTIONS. . . . . . . . . . . . . . . . 1-12

8. AC POWER AND DC POWER DISTRIBUTION . . . . . . . . . . . . . . . 1-16

2. DETAILED SECTION DE SCRIPTIONS

1. DRUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

1.1 OPC DRUM CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

1.2 DRUM UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2. DRUM CHARGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.1 OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3

2.2 CHARGE CORONA WIRE CLEANER MECHANISM . . . . . . . . . . . . . . . . . . . . . 2-4

2.3 CHARGE CORONA CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

2.4 GRID VOLTAGE CORRECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2.4.1 Drum Residual Voltage Correction (Vr correction) . . . . . . . . . . . . . . . . . . . . 2-6

2.4.2 Vp Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2.5 GRID VOLTAGE CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.5.1 Image Density Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.5.2 Toner Density Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

2.5.3 Vr Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8

3. OPTICS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

3.1 OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

3.2 SCANNER DRIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

3.2.1 1st and 2nd Scanner Drive Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

3.3 LENS DRIVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

3.3.1 Lens Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

3.3.2 Shading Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11

3.3.3 Lens Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12

3.4 4TH AND 5TH MIRROR DRIVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

3.4.1 Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

3.4.2 Positioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13

3.5 ORIGINAL SIZE DETECTION IN PLATEN MODE (A111 Copier Only). . . . . . . 2-14

3.6 AUTOMATIC IMAGE DENSITY SENSING . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

3.7 EXPOSURE LAMP VOLTAGE CORRECTION . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

3.7.1 V

3.7.2 Drum Wear Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

3.7.3 Reproduction Ratio Correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

3.8 EXPOSURE LAMP VOLTAGE CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18

3.8.1 Base Lamp Voltage Factor in Manual Image Density Mode. . . . . . . . . . . . 2-19

3.8.2 Base Lamp Voltage Factor in Auto Image Density Mode . . . . . . . . . . . . . . 2-19

3.8.3 V

3.8.4 Drum Wear Correction Factor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

3.8.5 Reproduction Ratio Correction Factor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21

3.9 EXPOSURE LAMP CONTROL CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22

L Correction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17

L Correction Factor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20

4. ERASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

4.1 OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23

4.1.1 Lead Edge Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

4.1.2 Side Erase. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24

4.1.3 Trail Edge Erase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

4.1.4 Editing Mode Erase. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25

5. DEVELOPMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

5.1 OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27

5.2 DRIVE MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28

5.3 CROSS-MIXING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-29

5.4 DEVELOPMENT BIAS FOR IMAGE DENSITY CONTROL. . . . . . . . . . . . . . . . 2-30

5.4.1 Base Bias Voltage Factor in Manual Image Density Control . . . . . . . . . . . 2-30

5.4.2 Base Bias Voltage Factor in Automatic Image Density Control . . . . . . . . . 2-31

5.4.3 Base Bias Voltage Adjustment Factor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-32

5.4.4 Vr Correction Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33

5.5 DEVELOPMENT BIAS CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34

5.6 COLOR DEVELOPMENT UNIT DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . 2-35

6. TONER DENSITY DETECTION AND TONER SUPPLY. . . . . . . . . 2-36

6.1 DETECT SUPPLY MODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36

6.2 ID SENSOR FUNCTION IN DETECT SUPPLY MODE . . . . . . . . . . . . . . . . . . . 2-37

6.3 FIXED SUPPLY MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-38

6.4 ID SENSOR FUNCTION IN FIXED SUPPLY MODE . . . . . . . . . . . . . . . . . . . . . 2-39

6.4.1 Black Development Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39

6.4.2 Color Development Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39

6.5 ABNORMAL CONDITION IN TONER DENSITY DETECTION . . . . . . . . . . . . . 2-40

6.6 DEVELOPMENT BIAS TONER DENSITY DETECTION . . . . . . . . . . . . . . . . . . 2-40

6.6.1 Toner Density Adjustment Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-40

6.6.2 Vd Correction Factor (Only for Black Toner). . . . . . . . . . . . . . . . . . . . . . . . 2-41

6.7 TONER SUPPLY AND AGITATOR DRIVE MECHANISM. . . . . . . . . . . . . . . . . 2-42

6.8 TONER SUPPLY AMOUNT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43

6.8.1 Detect Supply Mode (SP30 = 0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-43

6.8.2 Fixed Supply Mode (SP30 = 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45

6.9 BLACK TONER END DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47

6.9.1 Near Toner End Condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47

6.9.2 Toner End Condition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47

6.9.3 Toner End Recovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-48

6.10 COLOR TONER END DETECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49

6.11 COLOR TONER SUPPLY UNIT INITIAL SETTING (SP63). . . . . . . . . . . . . . . 2-50

7. IMAGE TRANSFER AND PAPER SEPARATION. . . . . . . . . . . . . . 2-51

7.1 PRE-TRANSFER LAMP (PTL). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51

7.2 IMAGE TRANSFER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-51

7.3 PAPER SEPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-52

7.4 PRE-TRANSFER LAMP AND TRANSFER/SEPARATION CORONA

CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-53

8. DRUM CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-54

8.1 OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-54

8.2 DRIVE MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-55

8.3 TONER OVERFLOW DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56

9. QUENCHING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-57

10. PAPER FEED AND REGISTRATION . . . . . . . . . . . . . . . . . . . . . . 2-58

10.1 OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-58

10.2 FRR FEED SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59

10.2.1 Pick-up Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59

10.2.2 Feed and Reverse Rollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-59

10.3 1ST FEED STATION PAPER LIFT MECHANISM AND PAPER END

DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-61

10.3.1 Paper Lift Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-61

10.3.2 Paper End Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-62

10.4 2ND/3RD FEED STATION PAPER LIFT MECHANISM AND PAPER END

DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63

10.4.1 Paper Lift Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63

10.4.2 Paper End Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63

10.5 PAPER SIZE DETECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64

10.5.1 1st Feed Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-64

10.5.2 2nd/3rd Feed Station. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-66

10.6 PAPER FEED DRIVE MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-68

10.6.1 1st Feed Station . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-68

10.6.2 2nd Feed Station. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-69

10.6.3 3rd Feed Station (A111 Copier Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-70

10.7 SLIP CLUTCH MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-71

10.8 MANUAL FEED TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-72

10.9 PAPER REGISTRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-73

10.10 PAPER FEED AND MISFEED DETECTION TIMING . . . . . . . . . . . . . . . . . . 2-74

11. IMAGE FUSING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-76

11.1 OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-76

11.2 FUSING DRIVE RELEASE MECHANISM AND COVER SAFETY SWITCH. . 2-77

11.3 FUSING LAMP CONTROL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-78

11.4 ENERGY SAVER FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-79

11.5 FUSING LAMP CONTROL CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-80

11.5.1 Phase Control Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-81

11.5.2 Overheat Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-82

3. INSTALLATION

1. INSTALLATION REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1.1 ENVIRONMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1.2 MACHINE LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1.3 MINIMUM SPACE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

1.4 POWER REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

2. INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

2.1 ACCESSORY CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

2.2 COPIER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

2.3 CASSETTE MODIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

2.4 KEY COUNTER HOLDER INSTALLATION (Option) . . . . . . . . . . . . . . . . . . . . . 3-11

2.5 OPTICS ANTI-CONDENSATION HEATER INSTALLATION (Option). . . . . . . . 3-12

2.6 COLOR DEVELOPMENT UNIT INSTALLATION (Option). . . . . . . . . . . . . . . . . 3-13

2.7 DC POWER SUPPLY UNIT INSTALLATION (A110 Copier Only) (Option). . . . 3-15

4. SERVICE TABLES

1. SERVICE REMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

1.1 GENERAL CAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

1.2 DRUM AND DRUM UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

1.3 CHARGE CORONA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

1.4 OPTICS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

1.5 DEVELOPMENT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

1.6 TONER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

1.7 TRANSFER AND SEPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

1.8 CLEANING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

1.9 FUSING UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

1.10 PAPER FEED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

1.11 DOCUMENT FEEDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

1.12 SORTER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

1.13 OTHERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

2. SERVICE PROGRAM MODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

2.1 SERVICE PROGRAM MODE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

2.1.1 Service Program Access Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

2.1.2 Change Adjustment Values or Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

2.1.3 Memory Clear Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

2.2 SERVICE PROGRAM MODE TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

2.3 SP-8 SENSOR/SWITCH DATA CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24

2.4 SP-9 ELECTRICAL COMPONENT CHECK. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26

2.5 MISFEED LOCATION INDICATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28

2.5.1 Initial Misfeed Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28

2.5.2 Misfeed Detection During Copy Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29

3. SERVICE TABLES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30

3.1 TEST POINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30

3.2 DIP SWITCHES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31

3.3 VARIABLE RESISTORS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-33

4. SPECIAL TOOLS AND LUBRICANTS . . . . . . . . . . . . . . . . . . . . . . 4-34

5. PREVENTIVE MAINTENANCE SCHEDULE. . . . . . . . . . . . . . . . . . 4-35

5.1 PM TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35

5.2 EXPLANATION OF REGULAR PM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39

5.3 REGULAR PM PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-41

5. REPLACEMENT AND ADJUSTMENT

1. EXTERIOR AND INNER COVERS. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

1.1 EXTERIOR COVER REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

1.1.1 Front Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

1.1.2 Right Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

1.1.3 Left Lower Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

1.1.4 Left Upper Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

1.1.5 Rear Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

1.1.6 Upper Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

1.2 INNER COVER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

1.2.1 Right Inner Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

1.2.2 Left Inner Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

2. OPTICS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

2.1 EXPOSURE GLASS REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

2.2 1ST MIRROR REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

2.3 2ND AND 3RD MIRROR REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

2.4 4TH AND 5TH MIRROR REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10

2.5 EXPOSURE LAMP REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

2.6 OPTICS THERMOSWITCH REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

2.7 SCANNER DRIVE WIRE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

2.7.1 Wire Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14

2.7.2 Wire Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

2.8 SCANNER MOTOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

2.9 LENS MOTOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

2.10 LENS DRIVE WIRE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

2.11 4TH/5TH MIRROR MOTOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . 5-24

3. DEVELOPMENT AND TONER SUPPLY. . . . . . . . . . . . . . . . . . . . . 5-25

3.1 TONER SUPPLY UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25

3.2 DEVELOPER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

3.3 INLET SEAL REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27

3.4 TONER SUPPLY CLUTCH REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28

3.5 DEVELOPMENT CLUTCH SOLENOID REPLACEMENT . . . . . . . . . . . . . . . . . 5-29

3.6 DEVELOPMENT DRIVE CLUTCH REPLACEMENT. . . . . . . . . . . . . . . . . . . . . 5-30

3.7 DEVELOPMENT BIAS VOLTAGE ADJUSTMENT (SP9-57). . . . . . . . . . . . . . . 5-32

4. CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33

4.1 CLEANING UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33

4.2 CLEANING BLADE REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34

4.3 CLEANING BRUSH REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35

4.4 BLADE SCRAPER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-36

4.5 TONER OVERFLOW SENSOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . 5-37

4.6 USED TONER COLLECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-38

4.7 ENTRANCE SEAL REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-39

5. PAPER FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-40

5.1 1ST PAPER SIZE SWITCH REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 5-40

5.2 1ST PAPER END SENSOR AND PAPER LIFT SENSOR REPLACEMENT. . . 5-41

5.3 1ST FEED ROLLER, PICK-UP ROLLER, AND REVERSE ROLLER

REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42

5.4 2ND AND 3RD PAPER FEED ROLLER REPLACEMENT. . . . . . . . . . . . . . . . . 5-44

5.5 RELAY SENSOR REPLACEMENT (A111 Copier Only) . . . . . . . . . . . . . . . . . . 5-45

5.6 PICK-UP ROLLER RELEASE SOLENOID AND MANUAL FEED TABLE

SWITCH REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-46

5.7 1ST PAPER FEED CLUTCH SOLENOID REPLACEMENT . . . . . . . . . . . . . . . 5-47

5.8 PAPER LIFT CLUTCH SOLENOID ASSEMBLY REPLACEMENT . . . . . . . . . . 5-48

5.9 REGISTRATION CLUTCH REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-50

5.10 2ND PAPER FEED CLUTCH AND RELAY ROLLER CLUTCH

REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-51

5.11 3RD PAPER FEED CLUTCH REPLACEMENT (A111 Copier Only) . . . . . . . . 5-53

5.12 2ND AND 3RD PAPER END SENSOR REPLACEMENT . . . . . . . . . . . . . . . . 5-54

5.13 2ND AND 3RD PAPER SIZE SWITCH REPLACEMENT . . . . . . . . . . . . . . . . 5-55

5.14 REGISTRATION SENSOR AND ROLLER REPLACEMENT. . . . . . . . . . . . . . 5-56

6. AROUND DRUM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-59

6.1 DRUM REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-59

6.2 ID SENSOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-61

6.3 PICK-OFF PAWL REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-62

6.4 PTL BOARD REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-63

6.5 QUENCHING LAMP REPLACEMENT/CLEANING . . . . . . . . . . . . . . . . . . . . . . 5-64

6.6 ERASE LAMP REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-65

6.7 CHARGE CORONA WIRE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-66

6.8 CHARGE CORONA GRID REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-67

6.9 TRANSFER/SEPARATION CORONA WIRE REPLACEMENT. . . . . . . . . . . . . 5-68

6.10 CORONA CURRENT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-69

6.10.1 CHARGE CORONA CURRENT ADJUSTMENT (SP9-2). . . . . . . . . . . . . 5-71

6.10.2 GRID VOLTAGE ADJUSTMENT (SP9-2) . . . . . . . . . . . . . . . . . . . . . . . . 5-73

6.10.3 TRANSFER CORONA CURRENT ADJUSTMENT (SP9-5). . . . . . . . . . . 5-74

6.10.4 SEPARATION CORONA CURRENT ADJUSTMENT (SP9-8). . . . . . . . . 5-75

7. FUSING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-76

7.1 EXIT UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-76

7.2 FUSING LAMP REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-77

7.3 PRESSURE ROLLER REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-78

7.4 HOT ROLLER REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-80

7.5 THERMISTOR AND THERMOFUSE REPLACEMENT . . . . . . . . . . . . . . . . . . . 5-82

7.6 FUSING PRESSURE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-83

7.7 FUSING EXIT SENSOR REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-84

8. OTHERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-85

8.1 OPERATION PANEL REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-85

8.2 OZONE FILTER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-86

9. COPY QUALITY ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-87

9.1 LIGHT INTENSITY ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-88

9.2 UNEVEN EXPOSURE ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-89

9.3 BIAS VOLTAGE ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-90

9.4 TONER DENSITY ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-91

9.5 FIXED TONER SUPPLY MODE SELECTION . . . . . . . . . . . . . . . . . . . . . . . . . . 5-91

9.6 TONER SUPPLY RATIO SELECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-91

9.7 ID SENSOR (Vsg) ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-92

9.8 ADS (Auto Image Density Sensor) ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . 5-93

9.9 VERTICAL MAGNIFICATION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 5-94

9.10 HORIZONTAL MAGNIFICATION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . 5-94

9.11 FOCUS ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-95

9.12 ERASE MARGIN ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-96

9.13 REGISTRATION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-96

9.14 SIDE-TO-SIDE REGISTRATION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . 5-97

9.15 4TH/5TH MIRROR HEIGHT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . 5-100

6. TROUBLESHOOTING

1. COPY QUALITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

1.1 BLANK COPY (WHITE COPY). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

1.2 DIRTY BACKGROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

1.3 UNEVEN IMAGE DENSITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

1.4 VERTICAL BLACK BANDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

1.5 VERTICAL BLACK LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9

1.6 VERTICAL WHITE LINES OR BANDS–1 (DULL OR BLURRED) . . . . . . . . . . . 6-10

1.7 VERTICAL WHITE LINES OR BANDS–2 (THIN, DISTINCT) . . . . . . . . . . . . . . 6-11

1.8 HORIZONTAL BLACK/WHITE LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12

1.9 JITTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

1.10 BLACK SPOTS ON THE COPY IMAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

1.11 SKEWED (OPTICAL) COPY IMAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

1.12 TONER DENSITY TOO HIGH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-16

1.13 TONER DENSITY TOO LOW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-18

1.14 TONER SCATTERING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-20

1.15 UNFUSED COPY IMAGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-21

1.16 PAPER MISFEED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-22

1.17 DF ORIGINAL MISFEED OR SKEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-23

2. U-CODE CONDITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24

2.1 U1 - RIGHT COVER OPEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24

2.2 U2 - KEY COUNTER NOT SET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24

2.3 U4 - SORTER OPEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24

2.4 U5 - CASSETTE LIFT SENSOR NOT ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-24

2.5 U7 - DUPLEX UNIT OPEN DURING DUPLEX OPERATION . . . . . . . . . . . . . . 6-24

3. SERVICE CALL CONDITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25

3.1 CODE #11 – EXPOSURE LAMP ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-25

3.2 CODE #12 – EXPOSURE LAMP ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-27

3.3 CODE #13 – ZERO CROSS SIGNAL ERROR . . . . . . . . . . . . . . . . . . . . . . . . . 6-28

3.4 CODE #21 – SCANNER HOME POSITION ERROR. . . . . . . . . . . . . . . . . . . . . 6-29

3.5 CODE #22 – SCANNER HOME POSITION ERROR. . . . . . . . . . . . . . . . . . . . . 6-31

3.6 CODE #28 – LENS HOME POSITION ERROR. . . . . . . . . . . . . . . . . . . . . . . . . 6-33

3.7 CODE #29 – LENS HOME POSITION ERROR. . . . . . . . . . . . . . . . . . . . . . . . . 6-35

3.8 CODE #2A – 4TH/5TH MIRROR HOME POSITION ERROR . . . . . . . . . . . . . . 6-37

3.9 CODE #2B – 4TH/5TH MIRROR HOME POSITION ERROR . . . . . . . . . . . . . . 6-39

3.10 CODE #52 – FUSING WARM-UP ERROR . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-41

3.11 CODE #53 – FUSING OVERHEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-43

3.12 CODE #55 – FUSING THERMISTOR OPEN. . . . . . . . . . . . . . . . . . . . . . . . . . 6-44

3.13 E70 (IN THE MAGNIFICATION INDICATOR) – TONER OVERFLOW

SENSOR ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-46

3.14 CODE #80 – DUPLEX AND COPIER MAIN BOARD COMMUNICATION

ERROR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-47

3.15 CODE #82 – JOGGER HOME POSITION ERROR . . . . . . . . . . . . . . . . . . . . . 6-50

3.16 CODE #83 – JOGGER HOME POSITION ERROR . . . . . . . . . . . . . . . . . . . . . 6-51

3.17 ABNORMAL CONDITION IN TONER DENSITY DETECTION . . . . . . . . . . . . 6-52

4. ELECTRICAL COMPONENT DEFECTS . . . . . . . . . . . . . . . . . . . . . 6-54

4.1 SENSOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-54

4.2 SWITCH OR OTHER ELECTRICAL COMPONENT . . . . . . . . . . . . . . . . . . . . . 6-56

4.3 BLOWN FUSE CONDITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-57

4.3.1 A110 copier. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-57

4.3.2 A111 Copier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-58

DOCUMENT FEEDER

1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. COMPONENT LAYOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3. ELECTRICAL COMPONENT DESCRIPTIONS. . . . . . . . . . . . . . . . . . . 3

4. OVERALL MACHINE CONTROL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

5. BASIC OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

6. POWER DISTRIBUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6.1 A110 COPIER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6.2 A111 COPIER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

7. ORIGINAL FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

7.1 ORIGINAL PICK-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

7.2 ORIGINAL SEPARATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7.3 ORIGINAL FEED-IN MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.4 ORIGINAL SIZE DETECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

7.5 ORIGINAL INVERSION MECHANISM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.6 ORIGINAL FEED-OUT MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

7.7 BELT DRIVE MOTOR CIRCUIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7.8 FEED-OUT MOTOR CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

7.9 INPUT AND OUTPUT CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

8. LIFT MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

9. ORIGINAL MISFEED SENSING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

10. INSTALLATION PROCEDURE (for Machine Code: A110/ A11 1) . . 24

10.1 ACCESSORY CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

10.2 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

11. PREPARATION FOR TRANSPORTATION. . . . . . . . . . . . . . . . . . . . 34

12. REPLACEMENT AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . 35

12.1 FEED-IN UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

12.1.1 Transport Belt Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

12.1.2 Feed-in Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

12.1.3 Pick-up Roller Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

12.1.4 Feed-in Clutch Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

12.1.5 Pick-up Solenoid Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

12.1.6 Feed Roller Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

12.1.7 Feed-in Solenoid Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

12.1.8 Friction Belt Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

12.2 FEED-OUT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

12.2.1 Feed-out Unit Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

12.2.2 Inverter Solenoid Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

12.2.3 DF Leading Edge Registration Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . 47

12.3 BELT DRIVE MOTOR SPEED ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . 48

SORTER

1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. COMPONENT LAYOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3. ELECTRICAL COMPONENT DESCRIPTIONS. . . . . . . . . . . . . . . . . . . 3

4. OVERALL MACHINE CONTROL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

5. BASIC OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

6. EXIT ROLLER DRIVE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

6.1 ROLLER DRIVE MECHANISM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

6.2 ROLLER DRIVE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

7. BIN DRIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7.1 BIN DRIVE MECHANISM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7.2 BIN DRIVE CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

8. MISFEED DETECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

9. INSTALLATION PROCEDURE (for Machine Code: A1 10/A1 11 ) . . . 12

9.1 ACCESSORY CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

9.2 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

10. PREPARATION FOR TRANSPORTATION. . . . . . . . . . . . . . . . . . . . 16

11. ROLLER DRIVE BELT REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . 17

12. BIN GUIDE LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

DUPLEX

1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2. COMPONENT LAYOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3. ELECTRICAL COMPONENT DESCRIPTION . . . . . . . . . . . . . . . . . . . . 3

4. POWER DISTRIBUTION AND OVERALL MACHINE CONTROL . . . . 4

4.1 A110 COPIER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

4.2 A111 COPIER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

5. BASIC OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5.1 FIRST SIDE COPY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5.2 DUPLEX STACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

5.3 SECOND SIDE COPY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

6. DRIVE MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

7. FIRST SIDE COPY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7.1 FROM COPIER PAPER FEED SECTION TO DUPLEX ENTRANCE ROLLER . . 8

7.2 FROM DUPLEX ENTRANCE ROLLER TO DUPLEX TRAY . . . . . . . . . . . . . . . . . 9

7.3 DUPLEX STACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

8. SECOND SIDE COPY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

9. DUPLEX PAPER FEED AND MISFEED DETECTION TIMING . . . . . 12

10. INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

10.1 ACCESSORY CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

10.2 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

11. REPLACEMENT AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . 19

11.1 DUPLEX TRAY REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

11.2 JOGGER MOTOR AND JOGGER HOME POSITION SENSOR

REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

11.3 TURN SENSOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

11.4 FEED MOTOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

11.5 PAPER END SENSOR REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

11.6 ENTRANCE SENSOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

11.7 GATE SOLENOID REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

11.8 FRICTION ROLLER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

11.9 FEED ROLLER REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

SECTION 1

OVERALL MACHINE

INFORMATION

1 May 1993 SPECIFICATIONS

1. SPECIFICATIONS

Configuration: Desk top Copy Process: Dry electrostatic transfer system Originals: Sheet/Book Original Size: Maximum: A3/11" x 17" Copy Paper Size: Maximum: A3/11" x 17"

Minimum: A6/51/2" x 81/2" (lengthwise)

..... Manual an d casse tte feeds

A5/11" x 81/2" (sideways)

..... Paper tray feed

(Duplex Copying) A4/11" x 81/2" (sideways) Copy Paper Weight: Cassette feed: 52 to 157 g/m2 (14 to 42 lb)

Paper tray feed: 64 to 90 g/m2 (17 to 22 lb) Manual feed: 52 to 157 g/m2 (14 to 42 lb) Duplex: 58 to 104 g/ m2 (16 to 28 lb)

Reproduction Ratio: 2 Enlargement and 3 Red uction

A4/A3 version LT/LDG version

Enlargement 141%

122% Full size 100% 100% Reduction 93%

82% 71%

155% 129%

93% 74% 65%

Overall

Information

Zoom: From 50% to 200% in 1% steps Copying Speed: (A110 copier)

20 copies/minute (A4/11" x 8 1/2" sideways) 10 copies/minute (A3/11" x 17") (A111 copier) 22 copies/minute (A4/11" x 8 1/2" sideways)

11 copies/minute (A3/11" x 17") Warm-Up Time: Less than 60 seconds (at 20°C) First Copy Time: 5.9 seconds (A4/11" x 81/2" sideways for cassette

feed) Copy Number Input: Ten keys, 1 to 99 (count up)

1-1

SPECIFICATIONS 1 May 1993

Manual Image Density

7 steps Selection:

Automatic Reset: All input modes are reset 1 minute after the copier

is not in use; can also be set to 3 minut es or no

auto reset. Energy Saver Function: Saving the electricity consumption

(Manual or manual/auto) Paper Capacity: Cassettes: 500 sheets

Paper tray: 250 sheets

(A110 copier ... 1 paper tray) (A111 copier ... 2 paper trays)

Manual feed table: 50 sheets Toner Replenishment: Black: Cartridge exchange (370g/cartridge)

Color (red, blue, & green):

Cartridge exchange (310 g/ cart ridge)

Copy Tray Capacity: 250 sheets (B4/81/2" x 14" and smaller)

100 sheets (A3/11" x 17") Power Source: 1 10 V/ 60 Hz/ 15 A (fo r Taiwan )

115 V/ 60 Hz/ 15 A (for North America)

220/230/240 V/ 50 Hz/ 8 A (for Europe)

220 V/ 60 Hz/ 8 A (for Middle East)

(Refer to the serial numb er plate (rating plate) t o

determine the power source required by the

machine.) Power Consumption:

A110 copier A111 copier Maximum 1.2 kVA 1.3 kVA Warm-up 720 VA (average) 720 VA (average) Copy cycle 810 VA (average) 830 VA (average) Stand-by

(without energy saver function)

160 VA (average) 160 VA (average)

1-2

1 May 1993 SPECIFICATIONS

Dimensions:

Width Depth Height

Copier only A110 copier 672 mm (1130 mm)

26.5" (44.5")

A111 copier 672 mm (1130 mm)

26.5" (44.5")

Full system A110 copier 1149 mm

45.3"

A111 copier 1149 mm

45.3"

( ): when the cassette and platen cover are installed and the copy tray is extended.

600 mm

23.7" 600 mm

23.7"

410 mm (464 mm)

16.1" (18.3") 530 mm (584 mm)

20.9" (23.0") 513 mm

20.2" 633 mm

25.0"

Noise Emissions:

Maximum Copy cycle Stand-by Copier only less than 58 dB less than 55 dB less than 40 dB Full system less than 60 dB less than 58 dB less than 40 dB

Overall

Information

Weight:

A110 copier A111 copier

Copier only 55 kg (121.3 lb) 64 kg (141.1 lb) Full system 78 kg (172 lb) 83.5 kg (184 lb)

Optional Equipment and Machine Configu rat ion:

( ) Machine Code

Configuration Optional dc power supply unit (A525)

Main frame Optional equipment Required Not required

A110 copier 10 bin sorter (A490) O

Document feeder (A318) O Duplex unit (A491) O Color development unit (A313) O

A111 copier 10 bin sorter (A490) O

Document feeder (A318) O Duplex unit (A491) O Color development unit (A313) O

Other Optional Equ ipment:

• Key counter

• Universal cassette

• Optics anti-condensation heater

1-3

SPECIFICATIONS 1 May 1993

• Specifications are subje ct to change witho ut notice.

1-4

1 May 1993 COPY PROCESSES AROUND THE DRUM

2. COPY PROCESSES AROUND THE DRUM

2. EXPOSURE

1. DRUM CHARGE

3. ERASE

9. QUENCHING

4. DEVELOPMENT

Overall

Information

8. CLEANING

7. PAPER SEPARATION

5. PRE-TRANSFER LAMP (PTL)

6. IMAGE TRANSFER

1-5

COPY PROCESSES AROUND THE DRUM 1 May 1993

1. DRUM CHARGE

In the dark, the charge corona unit gives a uniform negative charge to the organic photoconductive (OPC) drum. The charge remains on the surface of the drum because the OPC drum has a high electrical resistance in the dark.

2. EXPOSURE

An image of the original is reflected to the OPC drum surface via the optics assembly. The charge on the drum surface is dissipated in direct proportion to the intensity of the reflected light, thus producing an electrical latent image on the drum surface.

3. ERASE

The erase lamp illuminates the areas of the charged drum surface that will not be used for the copy image. The resistance of the drum in the illuminated areas drops and the charge on those areas dissipates.

4. DEVELOPMENT

Positively charged toner is attracted to the negatively charged areas of the drum, thus developing the latent image. (The positive triboelectric charge is caused by friction between the carrier and toner particles.)

5. PRE-TRANSFER LAMP (PTL)

The PTL illuminates the drum to remove all negative charge from the exposed areas of the drum. This prevents the toner particles from being reattracted to the drum surface during paper separation and makes paper separation easier.

6. IMAGE TRANSFER

Paper is fed to the drum surface at the proper time so as to align the copy paper and the developed image on the drum surface. Then, a strong negative charge is applied to the back side of the copy paper, producing an electrical force which pulls the toner particles from the drum surface to the copy paper. At the same time, the copy paper is electrically attracted to the drum surface.

7. PAPER SEPARATION

A strong ac corona discharge is applied to the back side of the copy paper, reducing the negative charge on the copy paper and breaking the electrical attraction between the paper and the drum. Then, the stiffness of the copy paper causes it to separate from the drum surface. The pick-off pawls help to separate paper.

8. CLEANING

The cleaning brush removes most of the toner on the drum and loosens the remainder. Then the cleaning blade scrapes off the loosened toner.

9. QUENCHING

Light from the quenching lamp electrically neutralizes the surface of the drum.

1-6

1 May 1993 COPY PROCESS CONTROL

3. COPY PROCESS CONTROL

Image Density Control

Toner Density Detection

Residual Voltage (Vr) Detection

Between Copies (Nonimage area)

Grid Voltage Exposure Lamp

Voltage

Standard image density grid voltage (–920V) + Drum residual voltage (Vr) correction factor (SP67) +

Standard ID sensor grid voltage (–560V) + Vp correction factor (SP69)

–500 bolts (Fixed)

0 volt (Fixed) Exposure lamp turns

Base exposure lamp voltage

1. Manual mode [SP48]

2. ADS mode [SP48] and [SP34]

VL correction factor [SP61] and [SP57]

+ Drum wear correction factor (SP58) + Reproduction ratio correction factor

Same as image density control

off

Development Bias

Voltage

Base bias voltage

1. Manual mode

2. ADS mode [SP34]

+ Base bias voltage

adjustment factor

[SP37].....Black

[SP79].....Color

+ Drum residual voltage (Vr) correction factor (SP67)

Toner density adjustment factor

[SP33].....Black

[SP75].....Color

+ Vd correction factor (Black only) (SP64)

0 volt (Fixed) Full erase

–200 volts (Fixed) +

Base bias voltage adjustment factor

[SP37].....Black

[SP79].....Color

Erase Lamp

Depending on paper size and reproduction ratio

ID sensor pattern erase (Vsg detection: Full erase)

(All LEDs ON)

Full erase (All LEDs ON)

Overall

Information

+ Drum residual voltage (Vr) correction factor (SP67)

NOTE: a) Boxed items can be adjusted by SP mode s surrounded by square

brackets [ ].

b) Data which determines the correct ion factor can be observed by

SP modes surrounded by parenth esis ( ).

1-7

MECHANICAL COMPONENT LAYOUT 1 May 1993

4. MECHANICAL COMPONENT LAYOUT

1 2 3 4 5 6 7 8 9 10 11 12 13 14

35 34

33 32

15 16

1. Third Mirror

2. Second Mirror

3. First Mirror

4. Exposure Lamp

5. Ozone Filter

6. Cleaning Unit

7. Lens

8. Quenching Lamp (QL)

9. Charge Corona Unit

10. Sixth Mirror

11. Erase Lamp

12. OPC Drum

13. Development Unit

14. Toner Supply Unit

15. Optics Cooling Fans

16. 1st Feed Roller

17. Manual Feed Table

18. Pick-up Roller

222324252627282930

19. Separation Roller

20. 1st Relay Rollers

21. 2nd Relay Rollers (A111 copier only)

22. 2nd Feed Rollers (Semi-circular)

23. 3rd Feed Rollers (Semi-circular) (A111 copier only)

24. Registration Rollers

25. Pre-transfer Lamp (PTL)

26. Transfer and Separation Corona Unit

27. Pick-off Pawls

28. Cleaning Brush

29. Cleaning Blade

30. Pressure Roller

31. Hot Roller

32. Duplex Turn Guide (Option)

33. Exit Rollers

34. Hot Roller Strippers

35. Exhaust Blower

1-8

G20

G12

G13

G29: Duplex Transport Gear (Option)

1 May 1993 DRIVE LAYOUT

5. DRIVE LAYOUT

G11

G17 BP2 G16 TB1 G19 G18 G22 G23 G24

G26

G27

Overall

Information

G10

BP3

BP4

G14

G1: Main Motor Gear

G2: Relay Gear G18: Relay Gear

Gear

BP1: Timing Belt Pulley TB1: Timing Belt

TB2

BP5

Drum Fusing and Exit Section

Development Section

G28

G3BP1G15G33G32G31

G20: Relay Gear G21: Cleaning Drive Cleaning

G22: Relay GearG19: Drum Drive GearG3: Timing Belt Drive

G23: Relay Gear G24: Relay Gear

G29G25G21

BP2: Timing Belt Pulley

G16: Development CL Gear

G17: Toner Supply CL Gear

Toner Supply CL Toner Supply Unit

G25: Hot Roller Gear G26: Relay Gear

G27: Relay Gear

G28: Exit Roller Gear

Development UnitDevelopment CL Solenoid

1-9

TB2: Timing Belt

G32: Relay Gear

DRIVE LAYOUT 1 May 1993

Paper Feed Section

BP3: Timing Belt Pulley

G11: Registration CL Gear

Registration CL Registration Roller

1st Feed Station

1st Paper Feed CL Solenoid 1st Paper Feed Rollers

G4: Relay Gear G12: Relay Roller CL Gear G5: Relay Gear

G6: 1st Paper Feed CL Gear G7: Relay Gear G8: Paper Lift CL Gear Paper Lift CL G9: Paper Lift Gear G10: Sector Gear

2nd Feed Station Upper Relay Roller

G13: Upper Relay Roller Gear

Relay Roller CL

3rd Feed Station

(A111 copier only)

G14: Relay Gear

G15: 2nd Paper Feed CL Gear

2nd Paper Feed CL

2nd Paper Feed Roller

1-10

BP4: Timing Belt Pulley

BP5: Timing Belt Pulley Lower Relay Roller G31: Lower Relay Roller Gear

G33: 3rd Paper Feed CL Gear 3rd Paper Feed CL 3rd Paper Feed Roller

234

1 May 1993 ELECTRICAL COMPONENT LAYOUT

6. ELECTRICAL COMPONENT LAYOUT

Overall

Information

11 12

1. Scanner H.P. Sensor

2. Lens H.P. Sensor

3. Scanner Motor

4. Main Motor

5. Development Clutch Solenoid

6. Toner Supply Clutch

7. 4th/5th Mirror H.P. Sensor

8. Color Toner End Sensor

9. 4th/5th Mirror Motor

10. Pick-up Roller Release Solenoid

11. Manual Feed Table Switch

12. Color Switch

13. Paper Lift Clutch

14. 1st Paper Feed Clutch Solenoid

15. Registration Clutch

16. Right Cover Switch

17. Relay Roller Clutch

18. 1st Paper Size Switch

19. 1st Paper End Sensor

20. Relay Sensor (A111 copier only)

21. Paper Lift Sensor

22. Registration Sensor

23. Total Counter

24. Pre-transfer Lamp (PTL)

25. ID Sensor Board

26. Erase Lamp

27. Fusing Lamp

28. Quenchi ng Lamp (QL)

29. Auto Image Density Sensor

30. Fusing Thermistor

31. Toner Overflow Sensor

32. Fusing Thermofuse

33. Exit Sensor

34. Lens Motor

1-11

ELECTRICAL COMPONENT LAYOUT 1 May 1993

57 56

35. Platen Cover Closed Switch (A111 copier only)

36. Operation Panel Board

37. Original Length Sensor (A111 copier only)

38. Optics Thermoswitch

39. Exposure Lamp

40. Original Width Sensor (A111 copier only)

41. Cover Safety Switch

42. Main Switch

43. Exhaust Blower Motor

44. Drum Anti-condensation Heater

45. Main DC Power Supply Board

46. Option DC Power Sup ply Bo ard (A110 copier only)

47. Option Transformer (A110 copier only)

48. 3rd Paper Size Switches (A111 copier only)

49. Noise Filter Board (220/230/240 V only)

50. 2nd Paper Size Switches

51. Main Transformer

52. 3rd Paper End Sensor (A111 copier only)

53. AC Drive Board

54. 3rd Paper Feed Clutch (A111 copier only)

55. 2nd Paper End Sensor

56. 2nd Paper Feed Clutch

57. Main Motor Capacitor

58. Main Board

59. TC/SC Power Pack

60. CC/Grid/Bias Power Pack

61. Platen Cover Position Sen sor (A111 copier only)

62. Optics Cooling Fan Motors

1-12

1 May 1993 ELECTRICAL COMPONENT DESCRIPTIONS

7. ELECTRICAL COMPONENT DESCRIPTIONS

Symbol Name Function Index No.

Motors

M1 Main Motor Drives all the main unit components except

for the optics unit and fans. (115/220/230/240 Vac)

M2 Scanner Motor Drives the scanners (1st and 2nd). (dc

stepper)

M3 Lens Motor Moves the lens position according to the

selected magnification. (dc stepper)

M4 4th/5th Mirror Motor Move the 4th/5th mirror position according to

the selected magnification. (dc stepper)

M5 Optics Cooling Fan

Motor-1

M6 Optics Cooling Fan

Motor-2

M7 Exhaust Blower

Motor

Prevents built up of hot air in the optics cavity. (24 Vdc)

Removes heat from around the fusing unit and blower the ozone built up around the charge section to the ozone filter. (115/220/230/240 Vac)

Overall

Information

Magnetic Clutch

MC1 Toner Supply Clutch Drives the toner supply roller. 6

Magnetic Spring Clutches

MSC1 2nd Paper Feed

Clutch MSC2 Paper Lift Clutch Lifts paper to the appropriate feed station. 13 MSC3 Registration Clutch Drives the registration rollers. 15 MSC4 Relay Roller Clutch Drives the relay rollers for the 2nd or 3rd

MSC5 3rd Paper Feed

Clutch

Solenoids

SOL1 1st Paper Feed

Clutch Solenoid

SOL2 Pick-up Roller

Release Solenoid

SOL3 Development

Clutch Solenoid

Starts paper feed from the 2nd paper feed station.

paper feed station. Starts paper feed from the 3rd paper feed

station. (A111 copier only)

Starts paper feed from the first paper station. 14

a) After the paper is fed, releases the pick-up roller from next paper. b) When the manual feed table is used, releases the pick-up roller from the table.

Drives the development unit. 5

1-13

+ 312 hidden pages

Ricoh 4220, 4222 Service Manual

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