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1156SBG000AA

EP5000/EP4000 GENERAL, MECHANICAL/ ELECTRICAL

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1149SBG000BA

CONTENTS
GENERAL
1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-1 2. PRECAUTIONS FOR INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . G-4 3. PRECAUTIONS FOR USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-5 4. HANDLING OF THE CONSUMABLES . . . . . . . . . . . . . . . . . . . . . . . . . G-6 5. SYSTEM OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . G-7

1156SBG000BA

MECHANICAL/ELECTRICAL
1. CROSS-SECTIONAL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-1 2. COPY PROCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-2 3. DRIVE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-4 4. SEQUENTIAL EXPLANATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-5 5. WATCHDOG (CPU OVERRUN MONITOR) FUNCTION . . . . . . . . . . M-8 5-1. Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-8 5-2. Watchdog Function Post-Processing . . . . . . . . . . . . . . . . . . . . . . M-9 6. MALFUNCTION BYPASS FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . M-10 7. IMAGE STABILIZATION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-11 7-1. AIDC Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-12 7-2. Image Stabilization Control Processing Timing . . . . . . . . . . . . . . M-13 7-3. Details of Image Stabilization Controls . . . . . . . . . . . . . . . . . . . . . M-14 8. PC DRUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-16 9. DRUM CHARGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-17 9-1. Ozone Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-18 10. IMAGE ERASE LAMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-19 11. OPTICAL SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-24 11-1. Exposure Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-25 11-2. AE Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-26 11-3. Lamp Reflectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-27 11-4. Aperture Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-27 11-5. Scanner and 2nd/3rd Mirror Carriage Movement . . . . . . . . . . . M-28

i

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

CONTENTS
11-6. Lens Movement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-30 11-7. 4th/5th Mirrors Carriage Movement . . . . . . . . . . . . . . . . . . . . . . M-31 11-8. Original Glass Cooling Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-32 12. ORIGINAL SIZE DETECTING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . M-33 12-1. Identification of Original Size Detecting Sensors . . . . . . . . . . . M-33 12-2. Original Size Detecting Operation . . . . . . . . . . . . . . . . . . . . . . . . M-33 12-3. Sensor Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-34 12-4. Size Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-35 12-5. Original Size Detection Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . M-36 13. DEVELOPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-37 13-1. 13-2. 13-3. 13-4. 13-5. 13-6. 13-7. 13-8. 13-9. Developing Unit Drive Mechanism . . . . . . . . . . . . . . . . . . . . . . . M-38 Magnet Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-39 Developing Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-40 Doctor Blade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-41 ATDC Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-42 Sub Hopper Toner Replenishing Mechanism . . . . . . . . . . . . . . M-44 Sub Hopper Toner Empty Detection Control . . . . . . . . . . . . . . . M-45 Main Hopper Toner Replenishing Mechanism . . . . . . . . . . . . . . M-46 Swing Out/In the Main Hopper . . . . . . . . . . . . . . . . . . . . . . . . . . . M-47

14. IMAGE TRANSFER AND PAPER SEPARATION . . . . . . . . . . . . . . . . M-48 14-1. Ozone Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-49 15. PAPER SEPARATOR FINGERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-50 16. CLEANING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-53 16-1. Spent Toner Collection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-54 16-2. Cleaning Bias (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-56 17. MAIN ERASE LAMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-57 18. PAPER TAKE-UP/FEED SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-58 18-1. 18-2. 18-3. 18-4. 18-5. 18-6. 18-7. Drawer-in-Position Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-59 Drawer Paper Lifting/Lowering Mechanism/Control . . . . . . . . . M-60 Paper Level Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-65 Paper Empty Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-66 Universal Tray (2nd Drawer) Paper Size Detection . . . . . . . . . M-68 Paper Take-Up Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-71 Paper Take-Up Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-74

19. MULTI BYPASS TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-76 19-1. Paper Take-Up Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-77 19-2. Paper Separating Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . M-78 19-3. Paper Empty Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-79

ii

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

CONTENTS
20. VERTICAL PAPER TRANSPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-80 21. SYNCHRONIZING ROLLERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-81 21-1. Synchronizing Roller Drive Mechanism . . . . . . . . . . . . . . . . . . . M-82 21-2. Paper Dust Remover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-82 21-3. Synchronizing Roller Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-83 21-4. Prevention of Low Image Density on Copy . . . . . . . . . . . . . . . . M-84 22. PAPER TRANSPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-86 22-1. Suction Belt Drive Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . M-87 23. FUSING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-88 23-1. Fusing Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-89 23-2. Fusing Rollers Pressure Mechanism . . . . . . . . . . . . . . . . . . . . . M-90 23-3. Cleaning Roller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-91 23-4. Paper Separator Fingers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-92 23-5. Fusing Section Cooling Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-93 24. EXIT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-94 24-1. Detection of Left Upper Door in Position . . . . . . . . . . . . . . . . . . M-95 25. DEHUMIDIFYING SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-96 26. MEMORY BACKUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . M-97

iii

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1151SBG000D

SAFETY INFORMATION
ALL Areas CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer's instructions. Denmark ADVARSEL! Lithiumbatteri - Eksplosionsfare ved fejlagtig h�ndtering. Udskiftning m� kun ske med batteri af samme fabrikat og type. Lev�r det brugte batteri tilbage til leverand�ren. Norway ADVARSEL Eksplosjonsfare ved feilaktig skifte av batteri. Benytt samme batteritype eller en tilsvarende type anbefalt av apparatfabrikanten. Brukte batterier kasseres i henhold til fabrikantens instruksjoner. Sweden VARNING Explosionsfara vid felaktigt batteribyte. Anv�nd samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren. Kassera anv�nt batteri enligt fabrikantens instruktion. Finland VAROITUS Paristo voi r�j�ht��, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin. H�vit� K�ytetty paristo valmistajan ohjeiden mukaisesti.

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1151SBG000CA

GENERAL

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBG0100A

1 SPECIFICATIONS
TYPE PHOTOCONDUCTOR COPYING SYSTEM PAPER FEEDING SYSTEM : Console (with Stationary Platen) : Organic Photoconductor : Electrostatic Dry Powdered Image Transfer to Plain Paper : 3-Way Feeding 1st Drawer: Fixed Paper Size Tray (500 sheets of paper, USA Area: 550 sheets of paper) 2nd Drawer: Universal Tray (500 sheets of paper, USA Area: 550 sheets of paper) Multi Bypass Table (50 sheets of paper)

EXPOSURE SYSTEM DEVELOPING SYSTEM CHARGING SYSTEM IMAGE TRANSFER SYSTEM PAPER SEPARATING SYSTEM FUSING SYSTEM PAPER DISCHARGING SYSTEM MAXIMUM ORIGINAL SIZE COPY MEDIUM

: Mirror Scanning, Slit Exposure : New Micro-Toning System : Comb Electrode DC Negative Corona with Scorotron System : Visible Image Transfer by means of a Single-Wire DC Negative Corona with Corotron System : Single-Wire AC Corona with Corotron System, plus Paper Separator Finger : Heat Roller : Charge Neutralizing Brush : Metric-A3L; Inch-11" 17"L (L: Lengthwise)

1st Drawer (Automatic feeding) Plain paper (60 to 90 g/m2) Medium Translucent paper Transparencies Thick paper (91 to 157 g/m2) Recycled paper Dimens sions Maximum (Width Length) Minimum (Width Length) f � � � f 297 432 mm

2nd Drawer (Automatic feeding) f � � � f 297 432 mm

Multi Bypass Table f f f f f 297 432 mm

140 182 mm

140 182 mm

100 140 mm

f: Permissible

�: Not permissible

G-1

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

MULTIPLE COPIES WARMING-UP TIME FIRST COPY TIME

: 1 to 999 : 240 sec. or less with room temperature of 20�C and rated power voltage : A4C or 8-1/2" 11"C: 3.7 sec. or less (in Full size Mode using 1st Drawer)

CONTINUOUS COPY SPEED (copies/min.): Fed from 1st Drawer

EP5000:
Zoom Ratio Area Size A3L A4L A4C B4L 1.000 28 37 50 31 Zoom Ratio Area Size 11" 17" (L) 8-1/2" 11" (L) 8-1/2" 11" (C) 1.000 28 39 50

Metric

Inch

L: Lengthwise; C: Crosswise EP4000:
Zoom Ratio Area Size A3L A4L A4C B4L 1.000 26 34 40 29 Zoom Ratio Area Size 11" 17" (L) 8-1/2" 11" (L) 8-1/2" 11" (C) 1.000 25 35 40

Metric

Inch

L: Lengthwise; C: Crosswise
ZOOM RATIOS
Area Mode Full Size Fixed Reduction Metric 1.000 0.816 0.707 0.500 1.154 1.414 2.000 Inch 1.000 0.785 0.733 0.647 0.500 1.214 1.294 1.545 2.000

Enlargement Variable

50% to 200% (in 0.1% increments)

LENS EXPOSURE LAMP FUSING TEMPERATURE

: Through Lens (F = 6, f = 190 mm) : Halogen Frost Tube Lamp : 200�C

G-2

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

POWER/CURRENT CONSUMPTION (Copier Only)

EP5000:
Exposure Lamp (Rating) Fusing Heater Lamp (Rating) 115/120 V 950 W 220/240 V 1000 W Max. Power Consumption 1390 W 80 V 262 W 160 V 290 W 1450 W 1480 W 1410 W 1550 W

Voltage

115 V 120 V 127 V 220 V 240 V

EP4000:
Exposure Lamp (Rating) Fusing Heater Lamp (Rating) 115/120 V 900 W 220/240 V 950 W Max. Power Consumption 1250 W 80 V 262 W 160 V 290 W 1330 W 1400 W 1360 W 1500 W

Voltage

115 V 120 V 127 V 220 V 240 V

POWER REQUIREMENTS

: 115 V, 120 V, 127 V, 220-240 V; 50/60 Hz

ENVIRONMENTAL CONDITIONS
Temperature Humidity Ambient Illumination Levelness 10 to 30�C with a fluctuation of 10�C or less per hour 15 to 85% RH with a fluctuation of 10% RH or less per hour 3,000 lux or less 1� (1.75 mm/100 mm)

DIMENSIONS (Copier Only)

: Width .... 620 mm (24-1/2") Depth .... 740 mm (27") Height ... 960 mm (37-3/4") (including Original Cover and Paper Feed Cabinet) : EP5000: (with Paper Feed Cabinet) 123.5kg (272-1/4lbs) EP4000: (with Paper Feed Cabinet) 122.0kg (269lbs) *excluding the Copy Tray, starter, toner, and paper

WEIGHT

G-3

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1149SBG0200A

2 PRECAUTIONS FOR INSTALLATION
J Installation Site
To ensure safety and utmost performance of the copier, the copier should NOT be used in a place: F Where it will be subjected to extremely high or low temperature or humidity. F Which is exposed to direct sunlight. F Which is in the direct air stream of an air conditioner, heater or ventilator. F Which puts the operator in the direct stream of exhaust from the copier. F Which has poor ventilation. F Where ammonia gas might be generated. F Which does not have a stable, level floor. F Where it will be subjected to sudden fluctuations in either temperature or humidity. If a cold room is quickly heated, condensation forms inside the copier, resulting in blank spots in the copy. F Which is near any kind of heating device. F Where it may be splashed with water. F Which is dirty or where it will receive undue vibration. F Which is near volatile flammables or curtains.

J Power Source
Use an outlet with a capacity of 115/120/127V, 1480W or more, or 220-240V, 1550W or more. F If any other electrical equipment is sourced from the same power outlet, make sure that the capacity of the outlet is not exceeded. F Use a power source with little voltage fluctuation. F Never connect by means of a multiple socket any other appliances or machines to the outlet being used for the copier. F Make the following checks at frequent intervals: D Is the power plug abnormally hot? D Are there any cracks or scrapes in the cord? D Has the power plug been inserted fully into the outlet? D Does something, including the copier itself, ride on the power cord? F Ensure that the copier does not ride on the power cord or communications cable of other electrical equipment, and that it does not become wedged into or underneath the mechanism.

J Grounding
To prevent receiving electrical shocks in the case of electrical leakage, always ground the copier. F Connect the grounding wire to: D The ground terminal of the outlet. D A grounding contact which complies with the local electrical standards. F Never connect the grounding wire to a gas pipe, the grounding wire for a telephone, or a water pipe.

G-4

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1149SBG0300A

3 PRECAUTIONS FOR USE
To ensure that the copier is used in an optimum condition, observe the following precautions. F Never place a heavy object on the copier or subject the copier to shocks. F Insert the power plug all the way into the outlet. F Do not attempt to remove any panel or cover which is secured while the copier is making copies. F Do not turn OFF the Power Switch while the copier is making copies. F Provide good ventilation when making a large number of copies continuously. F Never use flammable sprays near the copier. F If the copier becomes inordinately hot or produces abnormal noise, turn it OFF and unplug it. F Do not turn ON the Power Switch at the same time when you plug the power cord into the outlet. F When unplugging the power cord, do not pull on the cord; hold the plug and pull it out. F Do not bring any magnetized object near the copier. F Do not place a vase or vessel containing water on the copier. F Be sure to turn OFF the Power Switch at the end of the workday or upon power failure. F Use care not to drop paper clips, staples, or other small pieces of metal into the copier.

J Operating Environment
The operating environmental requirements of the copier are as follows. D Temperature: 10�C to 30�C with a fluctuation of 10�C per hour D Humidity: 15% to 85% RH with a fluctuation of 10% RH per hour

J Power Requirements
The power source voltage requirements are as follows. D Voltage Fluctuation: AC115/120/127/220-240V "10% (Copying performance assured) )6%, �10% (Only AC 127V) �15% (Paper feeding performance assured) D Frequency Fluctuation: 50/60 Hz "0.3%

G-5

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1151SBG0400A

4 HANDLING OF THE CONSUMABLES
Before using any consumables, always read the label on its container carefully. F Use the right toner. The applicable copier model name is indicated on the Toner Bottle. F Paper can to be easily damaged by dampness. To prevent absorption of moisture, store paper, which has been removed from its wrapper but not loaded into the Drawer, in a sealed plastic bag in a cool, dark place. F Keep consumables out of the reach of children. F Do not touch the PC Drum with bare hands. F Store the paper, toner, and other consumables in a place free from direct sunlight and away from any heating apparatus. F The same sized paper is of two kinds, short grain and long grain. Short grain paper should only be fed through the copier crosswise, long grain paper should only be fed lengthwise. F If your hands become soiled with toner, wash them with soap and water immediately. F Do not throw away any used consumables (PC Drum, starter, toner, etc.). They are to be collected. NOTE Do not burn, bury in the ground, or throw into the water any consumables (PC Drum, starter, toner, etc.).

G-6

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBG0500A

5 SYSTEM OPTIONS
9,10 1, 2

11

12 13
1138O525AA

1149M026AA

1136O061AA

1134O005AA

7, 8

3

6

5

4
1. 2. 3. 4. 5. 6. 7. Automatic Document Feeder AF-5 Duplexing Document Feeder AFR-13 Paper Feed Cabinet PF-105 Duplex Cabinet PF-5D Paper Feed Cabinet PF-205 Duplex Unit AD-9 10-Bin Sorter S-106 8. 9. 10. 11. 12. 13. 10-Bin Staple Sorter ST-104 20-Bin Sorter S-208 20-Bin Staple Sorter ST-211 Data Terminal Data Controller D-102 Large Capacity Cassette C-301

G-7

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1151SBM000CA

MECHANICAL/ ELECTRICAL

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM0100A

1 CROSS-SECTIONAL VIEW

1 2

3

4

5

6

7

8

9 10 11 12 13

14 15 16

30 29 28

17

18

19

20

27

26

25

24 23 22

21

1134M001AB

1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17.

3rd Mirror 2nd Mirror 1st Mirror Exposure Lamp Ventilation Fan Motor Ozone Filter Lens Main Erase Lamp Cleaning Blade PC Drum Charge Corona PC Drum 6th Mirror Image Erase Lamp 4th Mirror 5th Mirror Sub Hopper Transport Roller

18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30.

Manual Bypass Take-Up Roll Upper Vertical Transport Roller Lower Vertical Transport Roller 2nd Drawer Paper Take-Up Roll 1st Drawer Paper Take-Up Roll Synchronizing Roller Image Transfer/Paper Separator Coronas Main Drive Motor Suction Belt Fusing Roller 1st Paper Exit Roller 2nd Paper Exit Roller Exit/Duplex Switching Guide

M-1

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM0200A

2 COPY PROCESS
2 3 4 10 9 1 5

13
1. 2. 3. 4. 5. 6. 7. PC DRUM DRUM CHARGING IMAGE ERASE EXPOSURE DEVELOPING PAPER FEEDING IMAGE TRANSFER

12

11
8. 9. 10. 11. 12. 13.

8
PAPER SEPARATION CLEANING MAIN ERASE TRANSPORT FUSING PAPER EXIT

7

MULTI BYPASS TABLE

6

1. PC Drum
The PC Drum is an aluminum cylinder coated with a photosensitive semiconductor. It is used as the medium on which a visible developed image of the original is formed. (For more details, see "8. PC DRUM".)

2. Drum Charging
The PC Drum Charge Corona Unit is equipped with a Comb Electrode and a Scorotron Grid to deposit a uniform negative charge across the entire surface of the PC Drum. (For more details, see "9. DRUM CHARGING".)

3. Image Erase
Any areas of charge which are not to be developed are neutralized by lighting up LEDs. (For more details, see "10. IMAGE ERASE LAMP".)

4. Exposure
Light from the Exposure Lamp reflected off the original is guided to the surface of the PC Drum and reduces the level of the negative charges, thereby forming an electrostatic latent image. (For more details, see "11. OPTICAL SECTION".)

5. Developing
Toner positively charged in the Developer Mixing Chamber is attracted onto the electrostatic latent image changing it to a visible, developed image. A DC negative bias voltage is applied to the Sleeve/Magnet Roller to prevent toner from being attracted onto those areas of the PC Drum which correspond to the background areas of the original. (For more details, see "13. DEVELOPMENT".)

M-2

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

6. Paper Feeding
Paper is fed either automatically from the 1st or 2nd Drawer, or manually via the Multi Bypass Table or Manual Bypass Table. Paper separation is accomplished by the torque limiter fitted to the Paper Separator Roll. (For more details, see "18. PAPER TAKE-UP/FEED SECTION".)

7. Image Transfer
The single-wire Image Transfer Corona Unit applies a DC negative corona emission to the underside of the paper, thereby attracting toner onto the surface of the paper. (For more details, see "14. IMAGE TRANSFER AND PAPER SEPARATION".)

8. Paper Separation
The single-wire Paper Separator Corona Unit applies an AC corona emission to the underside of the paper to neutralize the paper. In addition, mechanical paper separation is provided by the two PC Drum Paper Separator Fingers fitted to the Imaging Unit. (For more details, see "14. IMAGE TRANSFER AND PAPER SEPARATION".)

9. Cleaning
Residual toner on the surface of the PC Drum is scraped off by the Cleaning Blade. (For more details, see "16. CLEANING UNIT".)

10. Main Erase
Light from the Main Erase Lamp neutralizes any surface potential remaining on the surface of the PC Drum after cleaning. (For more details, see "17. MAIN ERASE LAMP".)

11. Transport
The paper is fed to the Fusing Unit by the Suction Belts. (For more details, see "22. PAPER TRANSPORT".)

12. Fusing
The developed image is permanently fused to the paper by a combination of heat and pressure applied by the Upper and Lower Fusing Rollers. (For more details, see "23. FUSING UNIT".)

13. Paper Exit
After the fusing process the paper is fed out by the Paper Exit Roller onto the Copy Tray. (For more details, see "24. EXIT UNIT".)

M-3

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM0300A

3

DRIVE SYSTEM

The Main Drive Motor provides drive for the entire mechanism of the copier. To help minimize operating noise, timing belts and plastic gears are used in large numbers for the drive train parts.

2nd Paper Exit Roller Drive

Suction Unit Drive PC Drum Drive Developing Section Drive Manual Feed Paper Take-Up Clutch Upper Fusing Roller Drive Gear

Upper Vertical Transport Roller Drive

Toner Conveying Coil Drive (on PC Unit)

Main Drive Motor

Synchronizing Roller Clutch Paper Transport Clutch

Lower Vertical Transport Roller Drive
1136M002AA

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Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM0400A

4 SEQUENTIAL EXPLANATION
* Figure in ( ) are the timer values for EP5000.
A The power cord is plugged into the outlet.

ON ON ON

DC Power Supply Unit PU1 outputs DC24V for dehumidifying heating. Drum Dehumidifying Heater H3 Paper Dehumidifying Heater H2 Only when Drum Dehumidifying Switch S3 and Paper Dehumidifying Switch S12 are ON

B

Power Switch S1 is turned ON.

OFF ON ON ON ON ON ON

H2 PU1 outputs DC24V and DC 5V. Power Supply Board PWB-C outputs DC 24V. (DC24V line: ON) Master Board PWB-A outputs DC4.7V and DC12V. Control panel display Suction Fan Motor M4 turns at half speed. Fusing Section Cooling Fan Motor M15 ON Approx. 1sec. Fusing Heater Lamp H1 The Lens is detected at the home position. The Mirror is detected at the home position. The Scanner makes its initial motion. The Lens is detected at the full size position. The Mirror is detected at the full size position.

The surface temperature of the Upper Fusing Roller reaches 165�C. ON ON ON *1 ON Main Drive Motor M1 and Original Glass Cooling Fan Motor M5 start predrive. Ventilation Fan Motor M3 M4 turns at full speed. Developing Bias/Paper Separator Corona ON Image Erase Lamp LA2 Approx. 200msec. To � on next page ON ON PC Drum Charge Corona/ Image Transfer Corona Main Erase Lamp LA3

Approx. 100msec.

M-5

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

� After the lapse of 30sec. or 15sec. Approx. 5msec. *30sec. if the Upper Fusing Roller surface temperature is less than 165�C when S1 is turned ON and 15sec. if the surface temperature is 165�C or higher. PC Drum Charge Corona/Image Transfer Corona OFF LA2

OFF

Approx. 160msec. OFF

*2

Approx. 285msec.

M1/M5 OFF LA3 Approx. 150msec. (500msec.) Approx. 4850msec. (4500msec.) OFF Developing Bias/Paper Separator Corona M4 turns at half speed. M3

C

The Start Key is pressed.

The components are energized in order of *1 on the preceding page. Approx. *3 OFF ON ON ON Exposure Lamp LA1 *3 : Varies for different drawers.

Fusing Section Cooling Fan Motor M15 Paper Transport Clutch CL1 1st Drawer Paper Take-Up Motor M11
L

1st Drawer Vertical Transport Sensor PC63 is blocked ( Approx. 5msec. OFF M11

).

Paper Leading Edge Detecting Sensor PC55 is blocked ( Approx. 45msec. OFF CL1

L

).

D SCP Board PWB-F outputs a LOW BASE signal to Master Board PWB-A.

Approx. 75msec. (65msec.)

OFF

LA3...Leading edge erase

M-6

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

E PWB-F outputs a LOW TRON signal to PWB-A.

ON ON

CL1 Synchronizing Roller Clutch CL2 Approx. 170msec. ON Separator Solenoid SL1 Approx. 150msec. OFF SL1

F PWB-F outputs a LOW SCEND signal to PWB-A.

Approx. 200msec. ...The Scanner stops and starts a return motion. OFF LA1 Approx. 250msec.
H

SCAN signal:

G The trailing edge of the paper moves past Transport Roller Sensor PC54 (unblocked:
H

)

Approx. 5msec.

OFF

CL1

H The trailing edge of the paper moves past Paper Leading Edge Detecting Sensor PC55 (unblocked:
H

)

Approx. 210msec.
I

OFF

CL2
H

The Trailing edge of the paper moves past Paper Exit Switch S53 (ON:

).

The components are deenergized in order of *2 on the preceding page.

M-7

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1149SBM0500A

5 WATCHDOG (CPU OVERRUN MONITOR) FUNCTION
The watchdog function monitors whether any of the CPUs mounted in the copier overrun. If this function detects that a CPU overruns, the copier automatically resets the CPU, thereby restarting the logic circuit and mechanism. Even if a copier CPU operates erratically due to electrical noise, therefore, the copier is able to recover from the faulty condition so that the number of visits made by the Technical Representative for CPU overrun can be minimized.
1156SBM0501A

5-1. Configuration
The copier has three printed-circuit boards each on which a CPU is mounted: *SCP Board PWB-F that controls the optical system, *Master Board PWB-A that controls the copier, Paper Feed Cabinet and Duplex Unit, and *MSC Board PWB-B that controls the control panel and system. In addition to these, each of the control boards for the Data Controller, Duplexing Document Feeder, and Sorter/Staple Sorter is equipped with a CPU. The watchdog functions are summarized as follows: *Each of the copier CPUs monitors whether or not it overruns. *The MSC CPU monitors the communications conditions of the CPUs in the Duplexing Document Feeder and Data Controller. *The Master CPU monitors the communications conditions of the CPUs in the Sorter and Staple Sorter. *The control boards for the Paper Feed Cabinet and Duplex Unit do not have a CPU in them. Instead, the Master CPU in the copier controls their operations.
Data Controller Control Board Duplexing Document Feeder Control Board (PWB-A)

Copier SCP Board PWB-F Sorter, Staple Sorter MSC Board PWB-B Control Board (PWB-A) Master Board PWB-A = Board on which a CPU is mounted

Paper Feed Cabinet, Duplex Unit Large Capacity Cassette

M-8

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1149SBM0502A

5-2. Watchdog Function Post-Processing
The following processing is performed if a faulty condition is detected in the CPU. When the copier CPU is found faulty: D All CPUs including those of the options are reset and the system is restarted. If the CPU is found faulty during a copy cycle, the system attempts to feed all sheets of paper out of the copier before resetting. (If paper is left inside the copier, the copier detects it as a misfeed as it is restarted.) When an option CPU is found faulty: D The option relays are turned OFF and ON and all options are then restarted. If the CPU is found faulty during a copy cycle, the copier stops the paper take-up sequence and feeds all sheets of paper out of the copier before resetting. The Watchdog Counter available from the Tech. Rep. mode allows the Technical Representative to check if any faulty condition has occurred in the CPU. For details, see SWITCHES ON PWBs.

M-9

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM0600A

6 MALFUNCTION BYPASS FUNCTION
D When a malfunction occurs in the copier, the malfunction bypass function permits the copier to continue operating if that malfunction is one of the predefined candidates for an isolated malfunction and if it will not affect the current copying operation. But, if an isolated malfunction occurs anytime during the actual copy cycle, the copier considers it a normal malfunction. D If a copying function involving an isolated malfunction is selected, the message "Selected mode can't be used." appears on the Touch Panel and the copier rejects that function. D When an isolated malfunction occurs, a tiny wrench " " indicator appears in the lower left corner of the Basic Screen. Access the "Machine Status" display by touching the wrench icon or via the Tech. Rep. mode to ascertain the trouble code. Then refer to the Troubleshooting Manual for details. D Trouble codes for up to five isolated malfunctions are shown on the "Machine Status" display. When a sixth isolated malfunction occurs, the copier considers it a normal malfunction, prompting a Tech. Rep. call. (The sixth malfunction is shown on the Touch Panel.) But, if all of the paper feed ports (except the manual feed port) show an isolated malfunction, the copier considers them a normal malfunction even though the isolated malfunction count may be less than five. The display also tells the condition when the image stabilization controls are not properly working. D For the details of the Isolated malfunction codes, see TROUBLESHOOTING for the copier and the specific SERVICE MANUAL for the options.

M-10

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1149SBM0700A

7 IMAGE STABILIZATION SYSTEM
z The following image stabilization controls are provided to ensure stabilized copy image.
Item Initial Setting Quality Image density, gradation Purpose To make initial settings of grid voltage (Vg), optimum Exposure Lamp voltage, and AE Sensor gain. To compensate for any drop in image density due to a deteriorating PC Drum. To compensate for any drop in the intensity of LA1 light due to a contaminated optical system. To keep a given toner-to-carrier ratio of the developer in the Developer Mixing Chamber. To compensate for any drop in PC Drum surface potential when the copier is cool immediately after the Power switch is turned ON. To compensate for image density and gradation aggravated by a faulty AIDC Sensor. Control Sets the initial values for grid voltage correction, optimum Exposure Lamp voltage correction, and AE Sensor gain adjustment. Corrects the grid voltage through AIDC Sensor control. Corrects the optimum Exposure Lamp voltage through AIDC control. Provides toner replenishing control by means of the ATDC Sensor. (For details, see 13. DEVELOPMENT.) Corrects the grid voltage and optimum Exposure Lamp voltage through AIDC Sensor control. Corrects the grid voltage and optimum Exposure Lamp voltage according to the time through which the PC Drum has turned and the copier has run.

Regular correction

Image density

Gradation

Foggy background

Correction made immediately after Power Switch is turned ON Correction for Faulty AIDC Sensor

Image density, gradation

Image density, gradation

z The following is the block diagram of the image stabilization system.
Exposure Lamp LA1 Original Width Scale Original Glass Halftone Patch PU2 EE

PWB-A Image Erase Lamp LA3 Toner Replenishing HV1 CPU

ATDC AIDC
1136M003AA

M-11

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1149SBM0701A

7-1. AlDC Sensor
To provide image stabilization control, this copier has AlDC Sensor PWB-G fitted to the Cleaning Unit of the Imaging Unit. The sensor is used to detect the toner density and background level on the PC Drum.

Operation
1: The PWB-G LED projects approx. 950-nm infrared light onto the surface of the PC Drum. 2: The PWB-G phototransistor detects the amount of light reflected back. 3: The phototransistor outputs a voltage corresponding to the intensity of the light reflected back.
Output PC Drum GND LED Power Supply

AIDC Sensor Image Transfer/Paper Separation Coronas
1149M005AA

Toner Density on PC Drum High Low

Light reflected Small Large

Output Voltage High Low

M-12

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM0702A

7-2. Image Stabilization Control Processing Timing
D The image stabilization controls use the AIDC Sensor and AE Sensor as the basis, performing the following four major types of processing. The grid voltage, T/C, and optimum Exposure Lamp corrections are not, however, made if T/C falls outside the range of 4% to 8% at adjustment. � AIDC Sensor adjustment � Grid voltage and T/C correction D Processing Timing
Timing Item Processing Order ( ) Initial setting At the initial setup, or when the FF or F5 test operation is run after the PC Drum has been replaced. Upon completion of the copy cycle for every 400 copies made in terms of the number of intermittent copies, as it is equivalent to the time over which the PC Drum turns. During warming-up immediately after the Power Switch has been turned ON (*3) Upon completion of the copy cycle for every 75K copies made in terms of the number of intermittent copies, as it is equivalent to the time over which the PC Drum has turned after a faulty AIDC Sensor was detected. Processing (f: Performed; *: Not performed) � f � f (*1) f � f � f

� Optimum Exposure Lamp voltage correction � AE Sensor gain adjustment

Regular correction

f

f

f

Correction immediately after S1 is turned ON Correction for a faulty AIDC Sensor

f

f

f

f

*

f (*2)

f (*2)

f

*1: T/C is not corrected when an F5 test operation is run. *2: The grid voltage is increased by 30V and the optimum Exposure Lamp voltage by 1V. No T/C correction is made even when the grid voltage reaches its upper limit. *3: The correction sequence is canceled as regular correction starts.

M-13

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM0703A

7-3. Details of Image Stabilization Controls
� AIDC Sensor adjustment � Grid voltage and T/C correction � Optimum Exposure Lamp voltage correction � AE Sensor gain adjustment

D The following is the details of each image stabilization control. �-1 AIDC Sensor coarse adjustment This adjustment represents a coarse adjustment of the AIDC Sensor when the ordinary control of only the LED current cannot cover part-to-part variations in the AIDC Sensor (installation, circuit, deterioration, etc.). The surface of the PC Drum whose charges have been neutralized is exposed to light from the LED. The output current from the AIDC Sensor goes through the load resistance selected by a 4-bit analog switch and the 4-bit analog switch selects the load resistance so that the resultant voltage becomes 1V or less. �-2 AIDC Sensor fine adjustment If the AIDC Sensor is dirty with toner, it results in an error being produced in the sensor output voltage value, providing a false reference value. The surface of the PC Drum which has been erased is exposed to light from the LED. The LED current value is varied through pulse width control so that the output voltage from the AIDC Sensor becomes 1V.
Controlled Part AIDC Sensor Control Signal PJ11A-7A ON OFF WIRING DIAGRAM 1-I

Pulse output

�

Grid voltage and T/C correction The Image Erase Lamp produces a solid-black pattern on the surface of the PC Drum and the AIDC Sensor reads the pattern. The grid voltage is then varied so that the output from the AIDC Sensor remains at a given level or higher, which ensures that the toner-to-carrier ratio on the surface of the PC Drum becomes constant. If an even greater solid-black density is required when the upper control limit of the grid voltage has already been reached, the target control value of T/C is raised in 0.5% steps up to 7%, thus terminating the adjustment sequence.

Control Value

1 Step

Initial Value

Grid Voltage

550 to 790V

30V

550V

M-14

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

The "Image Exposure" function of "Tech. Rep. Choice" available from the Tech. Rep. mode enables fine-adjustments of the grid voltage (solid-black image density) to be made. It specifies how many volts the optimum grid voltage determined by the image stabilization control is to be increased or decreased. This fine-adjustment value remains the same even when the optimum grid voltage is later varied by the image stabilization control.
Controlled Part Grid voltage output from High Voltage Unit HV1 Control Signal PJ13A-1 ON OFF WIRING DIAGRAM 3-F

Pulse Output

�

Optimum Exposure Lamp voltage correction The Exposure Lamp is turned ON to illuminate the halftone patch on the back of the Original Width Scale, thereby producing a halftone pattern on the surface of the PC Drum. The Exposure Lamp voltage is then varied so that the output from the AIDC Sensor falls within the target range, thereby ensuring an optimum exposure level.
Control Value 1 Step Initial Value

Exposure Lamp voltage (100V Areas) Exposure Lamp voltage (200V Areas)

40 to 80V 80 to 160V

1V 2V

58V 116V

The "manual exposure level" of Function F5 available from the Tech. Rep. mode enables fine-adjustments of the Exposure Lamp voltage (halftone image density) to be made. It specifies how many volts the optimum Exposure Lamp voltage determined by the image stabilization control is to be increased or decreased. This fine-adjustment value remains the same even when the optimum Exposure Lamp voltage is later varied by the image stabilization control.
Controlled Part Exposure Lamp Regulator (PWB-J) REM Control Signal PJ8A-12 ON OFF WIRING DIAGRAM 45-H

Pulse output

�

AE Sensor gain adjustment The Exposure Lamp is turned ON to illuminate the blank sheet of paper placed on the Original Glass (when an F5 or FF operation is run) or the halftone patch on the back of the Original Width Scale (when the AE Sensor gain is adjusted in a sequence other than F5 or FF). The reflected light is then read by the AE Sensor and a gain adjustment of the AE Sensor is made to maintain an optimum Auto exposure level.
Controlled Part Control Signal PJ3A-2 ON OFF WIRING DIAGRAM 12-B

AE Sensor Board PWB-H

Pulse Output

M-15

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1149SBM0800A

8 PC DRUM
The photoconductive drum used in this copier is the organic photoconductor (OPC) type. The drum is made up of two distinct, semiconductive materials on an aluminum alloy base. The outer of the two layers is called the Charge Transport Layer (CTL), while the inner layer is called the Charge Generating Layer (CGL). The PC Drum has its grounding point inside at the rear end. When the Imaging Unit is installed in the copier, the shaft on which the PC Drum Drive Coupling Gear is mounted contacts this grounding point.

Handling Precautions
This photoconductor exhibits greatest light fatigue after being exposed to light over an extended period of time. It must therefore be protected from light by a clean, soft cloth whenever the Imaging Unit has been removed from the copier. Further, use utmost care when handling the PC Drum to prevent it from being contaminated.
PC Drum Cross-Sectional View PC Drum CTL CGL Aluminum Cylinder

Gear

Shaft

Grounding Point

Grounding Plate

PC Drum Drive Coupling Gear

M-16

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM0900A

9

DRUM CHARGING

The PC Drum Charge Corona has a Scorotron grid to deposit a negative DC charge evenly across the surface of the PC Drum. The grid voltage (VG) applied to the grid mesh is selected between �550V (initial value, variable according to image stabilization controls) in the normal mode and the value in the normal mode +90V in the Photo mode by the Constant-Voltage Circuit in High Voltage Unit HV1. The Corona Unit has a Comb Electrode which minimizes the amount of ozone produced. The conventional wire type corona unit produces a large amount of ozone due to corona discharge in radial directions. The comb electrode type, on the other hand, discharges only toward the Grid Mesh, meaning a reduced amount of ozone is produced. The Comb Electrode can be cleaned by the user who pulls out to the front the shaft on which a Cleaning Rollar is mounted.

Holder

Comb Electrode

Spring

Holder

Grid Mesh

1151T03MCC

Control Signal PC Drum Charge Corona PWB-A PJ13A-2

ON L Normal Mode

OFF H

WIRING DIAGRAM 3-F

Control Signal Grid Voltage (VG) PWB-A PJ13A-1

Photo Mode

WIRING DIAGRAM 3-F

Pulse output

M-17

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM0901A

9-1. Ozone Filter
D Ozone produced by the PC Drum Charge Corona is absorbed by the Ozone Filter located to the left of the PC Drum Charge Corona, as the air is drawn out of the copier by Ventilation Fan Motor M3.
Ventilation Fan Motor M3 Ozone Filter PC Drum Charge Corona

1134M004AA

Control Signal M3 PJ34A-1

ON H

OFF L

WIRING DIAGRAM 11-F

M-18

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1000A

10 IMAGE ERASE LAMP
To prevent a black band from occurring across both the leading and trailing edges, and along the front and rear edges, of the electrostatic latent image, 40 LEDs of Image Erase Lamp LA3 are turned ON before development takes place, thereby reducing to a minimum the unnecessary potential on the surface of the PC Drum.

PC Drum Charge Corona Exposure Image Erase Lamp LA3

1156M010AA

The position of LA3 can be adjusted using the adjusting screw at the front of the copier.

Copier Front Frame Adjusting Screw

Copier Rear Frame

LA3 Board

Compression Spring
1156M011AA

M-19

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

The 40 LEDs are grouped as follows and turned ON and OFF according to the paper size and zoom ratio. * In the full size mode, ON/OFF control is provided according to the paper size. * In any zoom ratio other than full size, the copier compares the number of LEDs that are turned ON according to the paper size with the number that are turned ON according to the zoom ratio and uses the one that turns ON more LEDs. *The zoom ratio is used to provide ON/OFF control of the LEDs if paper size is not input in manual bypass copying, since the copier is unable to detect the paper size.
LED Group No. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 LED No. LED1 LED 2 LED 3 LED 4 LED 5 LED 6 LED 7 LED 8 LED 9 LED 10 LED 11 LED 12 LED 13 LED 14 LED 15 LED 16 LED Group No. 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 LED No. LED 17 LED 18 LED 19 LED 20 LED 21 LED 22 LED 23 LED 24 LED 25 LED 26 LED 27 to 35 LED 36 LED 37 LED 38 LED 39 LED 40

*The bigger the number, the nearer the LED is to the front side of the copier.

M-20

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

LA2 LEDs ON/OFF Pattern
Zoom Ratio Paper Width (mm) X91 92 X 99 100 X 107 108 X 116 117 X 126 127 X 135 136 X 142 X0.522 0.523 X 0.550 0.551 X 0.576 0.577 X 0.610 0.611 X 0.642 0.643 X 0.672 0.673 X 0.698 0.699 X 0.728 0.729 X 0.758 0.759 X 0.776 0.777 X 0.806 0.807 X 0.830 0.831 X 0.854 0.855 X 0.882 0.883 X 0.914 0.915 X 0.938 0.939 X 0.964 0.965 X 0.990 0.991X 143 X 149 150 X 158 159 X 166 167 X 173 174 X 184 185 X 195 196 X 203 204 X 211 212 X 220 221 X 229 230 X 235 236 X 244 245 X 251 252 X 258 259 X 267 268 X 277 278 X 284 285 X 292 293 X 298 LED Group No.
0 f f f f f f f f f f f f f f f f f f f f f f f f f f 1 f f f f f f f f f f f f f f f f f f f f f f f f f 2 f f f f f f f f f f f f f f f f f f f f f f f f 3 f f f f f f f f f f f f f f f f f f f f f f f 4 5 6 f f f f f f f f f f f f f f f f f f f f 7 f f f f f f f f f f f f f f f f f f f 8 f f f f f f f f f f f f f f f f f f 9 f f f f f f f f f f f f f f f f f 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 31 f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f

f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f f

f=

LED that turns ON

M-21

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

LA2 LEDs ON/OFF Pattern (Frame Erase, erase width 10mm)
Paper Width (mm) X105 106 X 113 114 X 121 122 X 130 131 X 140 141 X 149 150 X 156 157 X 164 165 X 172 173 X 180 181 X 188 189 X 198 199 X 208 209 X 217 218 X 225 226 X 234 235 X 243 244 X 249 250 X 258 259 X 265 266 X 272 273 X 281 282 X 291 292 X 298 299 X LED Group No.
0 f f f f f f f f f f f f f f f f f f f f f f f f f 1 f f f f f f f f f f f f f f f f f f f f f f f f f 2 f f f f f f f f f f f f f f f f f f f f f f f f 3 f f f f f f f f f f f f f f f f f f f f f f f 4 f f f f f f f f f f f f f f f f f f f f f f 5 f f f f f f f f f f f f f f f f f f f f f 6 f f f f f f f f f f f f f f f f f f f f 7 f f f f f f f f f f f f f f f f f f f 8 f f f f f f f f f f f f f f f f f f 9 f f f f f f f f f f f f f f f f f 10 f f f f f f f f f f f f f f f f 11 f f f f f f f f f f f f f f f 12 f f f f f f f f f f f f f f 13 f f f f f f f f f f f f f 14 f f f f f f f f f f f f 15 f f f f f f f f f f f 16 f f f f f f f f f f 17 f f f f f f f f f 18 f f f f f f f f 19 f f f f f f f 20 f f f f f f 21 f f f f f 22 f f f f 23 f f f 24 f f 25 f 26 27 30 f f f f f f f f f f f f f f f f f f f f f f f f f 31 f f f f f f f f f f f f f f f f f f f f f f f f f

f=

LED that turns ON

M-22

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1151T20MCB

Control Signal LA3 PWB-A PJ9A-1~6

ON

OFF

WIRING DIAGRAM 4-L

Static ON/OFF Control

M-23

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1100A

11 OPTICAL SECTION
As the Scanner is moved by Scanner Motor M2, the light from Exposure Lamp LA1 is reflected off the original and guided through the six Mirrors onto the surface of the PC Drum to form the electrostatic latent image.
6 5 7 8 2 9

7 1 3

7 4

12 13 15 16
1156M012AA

10 11

14

18 17

1. 2. 3. 4. 5. 6. 7. 8.

Scanner Reference Position Sensor PC81 Original Glass Cooling Fan Motor M5 Scanner Lens Scanner Motor M2 Scanner Shaft Mirror Motor M7 4th/5th Mirrors Carriage

9. 10. 11. 12. 13. 14. 15. 16. 17. 18.

4th Mirror 5th Mirror 6th Mirror Lens Motor M6 AE Sensor Board PWB-H Exposure Lamp LA1 1st Mirror 2nd Mirror 3rd Mirror 2nd/3rd Mirrors Carriage

M-24

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1101A

11-1. Exposure Lamp LA1
An AC halogen lamp is used as Exposure Lamp LA1. As the exposure level is adjusted on the control panel, the duty ratio of the pulse of AVR Remote from PWB-A changes to increase or decrease the LA1 voltage, thereby changing the image density. In Photo mode, the voltages are varied on a level 3V (200V Areas: 6V) lower than the manual Exposure Lamp voltages.
Manual EXP Setting Mode 1 Lamp Voltage Difference (V) "Manual Level Priority" Mode 2 Mode 3 9 8 7 6 5 Reference Reference Reference 4 3 2 1 �8 �5 �2 �1 �8 �6 �4 �2 �8 �7 �6 �3 +1 +2 +5 +8 +2 +4 +6 +8 +3 +6 +7 +8

Varies depending on the drawer.

1151T21MCB

Control Signal AVR Remote Signal (PWB-J) PWB-A PJ8A-13

ON L

OFF H

WIRING DIAGRAM 45-H

M-25

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1102A

11-2. AE Sensor
In the Auto Exposure Mode, the AE Sensor on AE Sensor Board PWB-H measures the intensity of the light reflected off the original, by sampling the black/white ratio of a 210-mm-wide area of the original being measured. According to this measurement, the Exposure Lamp voltage is automatically increased or decreased so that copies of consistent quality are produced. The output from the AE Sensor is applied to PWB-A which, in turn, varies the duty ratio of the AVR Remote which varies the LA1 voltage accordingly.
Original Density (B/W Ratio) Intensity of Reflected Light PWB-H Output AVR Duty LA1 Voltage High Low High Increased Increased Control Signal PWB-H (AE Sensor) AVR Remote Signal (PWB-J) PWB-A PJ3A-2 PWB-A PJ8A-13 Low High Low Decreased Decreased ON OFF WIRING DIAGRAM 12-B 45-H

Pulse output L H

M-26

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1103A

11-3. Lamp Reflectors
The Main Reflector ensures that light from Exposure Lamp LA1 exposes all areas of the original. The Auxiliary Reflector functions to reflect light onto the areas that LA1 cannot illuminate when an original that does not lie flat on the Original Glass (such as a book) is being used. This reduces shadows which would otherwise be transferred to the copy. The Main Reflector is of aluminum, while the Auxiliary Reflector is aluminum to which film has been deposited. The same film as that used on the Auxiliary Reflector is affixed to both ends of the frame to compensate for the reduced intensity of light around both ends of the Exposure Lamp.

Auxiliary Reflector

Auxiliary Reflector

Main Reflector Exposure Lamp LA1
1151M021AA

1156SBM1104A

11-4. Aperture Plates
Four Aperture Plates are moved to the front or rear to ensure even light distribution.

Aperture Plate

1139M035AA

M-27

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1105A

11-5. Scanner and 2nd/3rd Mirror Carriage Movement
The Scanner and 2nd/3rd Mirrors Carriage are moved by the Scanner Drive Cable fitted in the rear side of the copier. The Cable is driven by Scanner Motor M2. Both the Scanner and 2nd/3rd Mirrors Carriage slide along the Scanner Shaft at the rear side. While at the front side, there is a Slide Bushing attached to the underside of each of the bodies and that Bushing slides over the Slide Rail. The speed of the Scanner and 2nd/3rd Mirrors Carriage varies with different zoom ratios. Scanner Reference Position Sensor PC81 detects the home position of the Scanner and 2nd/3rd Mirrors Carriage. If they are not at the home position when the copier is turned ON, M2 is energized to move them to the home position.

Scanner Motor M2

Scanner Reference Position Sensor PC81

Scanner Shaft

Rear

1st Mirrors Carriage

2nd Mirrors Carriage

Front

1156M013AA

M-28

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

The Scanner starts the scan motion as a Scan signal is output from PWB-A. At the start of a scan motion and other heavy load conditions, Scanner Motor M2 requires a large amount of current. The Current 1 or 2 signal from PWB-F is selected accordingly to vary the amount of current supplied to M2. *The Current signal selection timing is controlled by software.
L Current 1 Current 2 Current When the scan speed reaches a given level and during scan deceleration H H M1 L H M2>M1>L At scan start and during return deceleration. (*) At return start and during return motion. (*) M2 H L

Operation

* M2 is used at scan start of a small zoom ratio. On receiving the Scan signal, Motor Drive Board PWB-F applies motor drive pulses, which are out-of-phase with each other, to M4. The motor speed is varied by changing the width of the pulses applied to M2.
Control Signal M2 Scan Signal M2 Current Switching Signal 1 M2 Current Switching Signal 2 PWB-F Energized L Deenergized H WIRING DIAGRAM

PWB-F

L

H 22-B

PWB-F

L

H

Control Signal PC81 PWB-F

Blocked L

Unblocked H

WIRING DIAGRAM 18-E

M-29

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1106A

11-6. Lens Movement
The Lens is moved by the Lens Drive Cable which is driven by Lens Motor M6 (stepping motor). The motor drive pulses sent from PWB-F drive M5 to move the Lens a given distance, corresponding to the zoom ratio, from the reference position determined by Lens Reference Position Sensor PC90. There is a fixed-type Lens Aperture Cover provided at the rear of the Lens (on the 4th Mirror end). It limits the amount of light striking the surface of the PC Drum.
Lens Reference Position Sensor PC90 Lens Base Bracket Lens Shaft

Lens Aperture Cover

Spring

Cam

Lens Drive Cable Lens Motor M5
1156M014AB

Lens

Lens Aperture Cover
1136M013AA

Control Signal M6 PWB-F Control Signal PC90 PWB-F

Energized L Blocked L

Deenergized H Unblocked H

WIRING DIAGRAM 19-A WIRING DIAGRAM 18-D

M-30

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1107A

11-7. 4th/5th Mirrors Carriage Movement
The 4th/5th Mirrors Carriage is moved to vary the conjugate distance for a particular zoom ratio by driving the rack-and-pinion gears at the front and rear ends of the mirror using Mirror Motor M7 (stepping motor). Mirror Reference Position Sensor PC86 is used to control the position of the 4th Mirror. It ensures that the Mirror is located at the home position when the copier is turned ON.

Pinion Gear

M7

Rack Gear 4th/5th Mirrors Carriage Mirror Motor M7

4th/5th Mirrors Guide Plate Mirror Reference Position Sensor PC86
1136M017AA

Control Signal M7 PWB-F Control Signal PC86 PWB-F

Energized L Blocked L

Deenergized H Unblocked H

WIRING DIAGRAM 19-B WIRING DIAGRAM 18-C

M-31

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1108A

11-8. Original Glass Cooling Fan Optical Section Cooling Fan Motor M5 draws outside air into the copier and blows it against the Original Glass which is heated by lit Exposure Lamp LA1. The Filter at the intake port of the Fan prevents dust and dirt from entering the Optical Section of the copier. M5 turns only while Main Drive Motor M1 is being energized.
Filter Original Glass

Rear of Copier

Front of Copier

Original Glass Cooling Fan Motor M5
1149M024AA

Control Signal M5 PWB-A PJ15A-5

Energized H

Deenergized L

WIRING DIAGRAM 21-H

M-32

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1200A

12 ORIGINAL SIZE DETECTING SENSORS
The five sensors fixed in the optical section receive the light reflected off the original to determine the size of the original in the Auto Paper and Auto Size mode. (The image density of the original, or OD, that can be detected is 0.6 or less.)
1156SBM1201A

12-1. Identification of Original Size Detecting Sensors
Original Size Detecting Board UN2

Original Size Detecting Sensor CD1 PC115

Original Size Detecting Sensor CD2 PC119

Original Cover Detecting Sensor PC111

Original Size Detecting Sensor FD3 PC118 Original Size Detecting Sensor FD2 PC117 Original Size Detecting Size Reset Switch S108
1156SBM1202A

Sensor FD1 PC116
1136M018AA

12-2. Original Size Detecting Operation
Each photo receiver of the original size detecting sensors (PC115 to 119) responds to reflected light of a given intensity with reference to the intensity of the light emitted by each LED. This allows the Original Size Detecting Board to determine whether or not there is an original within a set distance.
Original Original Glass

Set Distance Photo Receiver LED

1136M020AA

M-33

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1203A

12-3. Sensor Locations
D The number and location of the Original Size Detecting Sensors vary depending on the marketing area as shown below. f: Standard F: Optional
Sensors Areas Metric Areas Inch Areas Hong Kong Area CD1 (PC115) CD2 (PC119) FD1 (PC116) FD2 (PC117) FD3 (PC118)

f f f

F F f

f F f

f f f

F F f

NOTE: If the optional sensors are installed, set Jumper Connector JP2 on UN2 as illustrated below and run the F7 operation.
Length (Inch) FD1 FD2 Letter C Letter L Legal FLS FD3 11" 17"

Width (Inch) Width (Metric)

A5L B5L A4L B4L, B5C A3L, A4C CD2 CD1

Invoice Legal, Letter L Letter C, 11" 17" L: Lengthwise; B5C A4C, B5L A4L B4L A3L C: Crosswise A5L Original Size Detecting Board UN2 CN1 JP1 CN4 CN3 CN2

Length (Metric)

LED1

LED2

JP2

FD1 is mounted

Position of JP1
CD2 and FD3 are mounted

FD1 is not mounted

CD2 and FD3 are not mounted

Position of JP2

1136M022CA

M-34

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1204A

12-4. Size Detection
D Original Size Detecting Board UN2 reads the output data provided by the original size detecting sensors (PC115 to 119). By comparing the data from each sensor with the threshold level, it determines whether there is an original placed on the Original Glass. UN2 then determines the size of the original according to the combination of the data. Metric Area
FD1 Original Size A3L B4L A4L A5L A4C Letter L: 8-1/2" 11" 11" 17" Legal: 8-1/2" 14" FLS: 8-1/2" 13" Letter C: 11" 8-1/2" No Original Size Determined by UN2 A3L (A3L) B4L (B4L) A4L (A4L) A5L (A5L) A4C (A4C) Letter L (Letter L) 11" 17" (A3L) Legal (A4L) FLS (A4L) Letter C (A4C) No Original LED 2 FD2 LED 1 LED 2 FD3 LED 1 LED 2 CD1 LED 1 LED 2 CD2 LED 1

f f f f f f f f f f F
FD1

f f f F F f f f f F F

f f f F F F f f f F F
FD2 LED1

f(f) f(f) F(F) F(F) F(F)

f(F) f(F) F(F) F(F) F(F)

f F F F f F f F F f F

f f F F f F f F F f F

f(f) F(F) F(F) F(F) f(f) F(F) F(f) F(F) F(F) F(f) F(F)
CD1

F(F) F(F) f(f) f(F) f(F) f(F) f(F) F(F) F(F) F(F) F(F) F(F)
FD3 LED1

Inch Area
Original Size 11" 17" Legal: 8-1/2" 14" Letter L: 8-1/2" 11" Letter C: 11" 8-1/2" FLS: 8-1/2" 13" Invoice: 5-1/2" 8-1/2" No Original Size Determined by UN2 11" 17" (11" 17") Legal (Legal) Letter L (Letter L) Letter C (Letter C) FLS (Legal) Invoice (No Original) No Original

LED2

LED2

LED2

LED1

LED2

f(f) f(f) f(f) f(f) f(f) f(F) F(F)

f f f F f F F

f f F F f F F

f(f) f(f) F(F) F(F) f(f) F(F) F(F)

f(f) f(f) F(F) F(F) F(f) F(F) F(F)

f F F f F F F

f F F f F F F

*f: Original Present F: Original Not Present *If no optional sensors are mounted, data is processed as indicated in ( ) and the original sizes determined by UN2 are as indicated in ( ). *UN2 does not use the data provided by LED1 of Original Size Detecting Sensor FD1 (PC116) and LED2 of CD2 (PC119) for the determination of the original size. *Any non-standard size is rounded off to the nearest standard size.

M-35

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1205A

12-5. Original Size Detection Timing
Master CPU on PWB-A affirms and resets the readings of the original size at the following timings. D Takes size readings: When the Original Cover is raised to an angle of 15� or more (PC111 is deactivated). D Affirms size readings: When the Original Cover is lowered to an angle of 15� or less (PC111 is just activated); or, when the Start key is pressed with PC111 in the deactivated state. D Resets size readings: When the Original Cover is raised (S108 is deactuated).

Magnet Size Reset Switch S108

Original Cover Detecting Sensor PC111

Control Signal PC111 PWB-A PJ17A-11 Control Signal S108 PWB-A PJ12A-1

Blocked L ON L

Unblocked H OFF H

WIRING DIAGRAM 21-G WIRING DIAGRAM 16-B

M-36

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1300A

13

DEVELOPING UNIT

D This copier employs the New Micro-Toning developing system. The toner fed up to the Sleeve/Magnet Roller is conveyed onto the points of development as the Sleeve/Magnet Roller turns, thereby forming a visible, developed toner image of the original.

1

2

3

4

5

6

7 8

9

10

15

14 13 12 11
1156M015AA

1. 2. 3. 4. 5. 6. 7. 8.

Toner Bottle Developer Scattering Prevention Mylar Developer Scattering Prevention Plate Doctor Blade Sub Hopper Toner Supply Roller Toner Bottle Home Position Sensor PC35 Toner Bottle Home Position Detecting Plate Main Hopper Toner Replenishing Motor M8

9. 10. 11. 12. 13. 14. 15.

Sub Hopper Toner Empty Detecting Lever Sub Hopper Toner Agitating Lever ATDC Sensor UN3 Developer Conveying/Agitating Screw Bucket Roller Magnet Sheet Sleeve/Magnet Roller

M-37

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1301A

13-1. Developing Unit Drive Mechanism
D Drive is transmitted from the copier to the Developing Unit by Coupling Gears 1 and 2 when they mesh. D Coupling Gear 2 is spring-loaded. If the protruding part of Coupling Gear 1 makes contact with that of Coupling Gear 2 when the Developing Unit is slid into the copier, spring-loaded Coupling Gear 2 is pushed back toward the rear of the copier allowing the Developing Unit to be slid into position. When drive is later transmitted to the Developing Unit, Coupling Gar 2 is pushed to the front by the tension of the spring to mesh positively with Coupling Gear 1.

Front

Coupling Gear 2

Coupling Gear 1 Main Drive Motor M1

Rear

1134M009AA

M-38

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1302A

13-2. Magnet Roller
The Magnet Roller of the Sleeve/Magnet Roller of this copier has the following magnetic characteristics. Pole S3 before poles N1 and N2 at which development takes place provides a very weak magnetic force. If developer is compacted and clogs at the Doctor Blade and, as a result, part of the surface of the Sleeve/Magnet Roller is not covered with developer, the nearby developer around S3 goes to those uncovered areas because of the weak magnetic force. This helps prevent white lines from occuring on the copy. The magnetic flux density is maximized to allow the bristle to stand high and upright at poles N1 and N2, at which development takes place. The positioning of these two like poles together helps agitate the developer for greater uniformity, thus preventing white lines from occurring on the copy. The Sleeve Roller, onto which developer is attracted by the magnetic fields of force set up by the poles of the Magnet Roller, turns to convey the developer toward the point of development. This means that developer fresh from the Developer Mixing Chamber is always brought to the point of development. The Imaging Unit integrates the Developing Unit with the PC Drum into one body. Because of that, it is impossible to move the Developing Unit against the PC Drum, thereby providing a certain distance between the PC Drum and Sleeve/Magnet Roller. The Magnet Roller has therefore been made movable: the Bushing is pressed by compression springs thereby pressing the Positioning Collars on both ends of the Magnet Roller against the PC Drum. This ensures a given distance between the PC Drum and the Sleeve/Magnet Roller.

S2 S3 N4

N1

N2

S1

N3 Movable Bushing

Compression Spring Fixed Bushing PC Drum
1156M016AA

M-39

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1303A

13-3. Developing Bias
A negative voltage (Vb = Developing Bias voltage) is applied to the Sleeve Roller to prevent a foggy background on the copy. The amount of toner attracted onto the surface of the PC Drum depends on how much lower the PC Drum surface potential (Vi) is than Vb (i.e., the potential difference). D When the potential difference is large, a greater amount of toner is attracted. D When the potential difference is small, a smaller amount of toner is attracted. Because the Magnet Roller of this copier is movable, a flat spring is used as the Bias Terminal which follows the movement of the Magnet Roller.

DS Collar Bias Connector Sleeve/Magnet Roller Front
1134M018AA

Bias Terminal

Varies depending on the drawer.
1151T01MCC

Control Signal Developing Bias PWB-A PJ13A-3

ON L

OFF H

WIRING DIAGRAM 3-F

M-40

Interleaf EP5000/EP4000 GENERAL, MECHANICAL/ELECTRICAL 97.04.01

1156SBM1304A

13-4. Doctor Blade
The Doctor Blade installed over the Sleeve/Magnet Roller regulates the height of the developer brush on the surface of the Sleeve Roller. The Blade is perpendicular to the direction of move