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RICOH

RICOH F T 2 0 5 0 / 2 0 7 0
FIELD SERVICE MANUAL

RICOH COMPANY LTD.

CONTENTS

SECTION 1 : INSTALLATION REQUIREMENTS SECTION 2: UNPACKING AND INSTALLATION SECTION 3: PREPARATIONS FOR TRANSPORTING THE COPIER SECTION 4: SERVICE TABLES AND REMARKS SECTION 5: REPLACEMENT AND ADJUSTMENT SECTION 6: SORTER CS1040 SECTION 7: DOCUMENT FEEDER DF36 SECTION 8: TROUBLE SHOOTING SECTION 9: ELECTRICAL DATA

CAUTIONS

1. Before installing the machine, make sure that there is a suitable ground (earth) available. 2. Since some parts of the copier are supplied with high voltage, make sure the main switch is off and the power supply cord is unpluged before working on the copier. 3. When working on the fusing section, make sure that the fusing unit is cold. 4. When standing the clamshell straight up, place a block that has a height of approximately 80 mm (approx. 3") in front of the exit cover. 5. Do not turn on the safety switch when the clamshell is open.

SECTION 1

INSTALLATION REQUIREMENTS

1-1. Environment 1. Temperature Range : 10C to 30C
(50F to 86F) 2. 3. H u m i d i t y R a n g e : 15% to 90% RR Ambient Illumination : Less than 1,500 Iuxs (Do not expose to direct sunlight) Ventilation : Room air should turn over at least 3 times/hour. Ambient Room Size Dust : Less than 0.1 5mg/m3 .. More than 10m (13.4 yd) 8. 9. 10. 11. 7. If the installation place is air-conditioned or heated, place the machine: a. Where it will not be subjected to sudden temperature changes from low to high, or vice versa. b. Where it will not be directly exposed to cool air from an air conditioner in the summer. c. Where it will not be directly exposed to reflected heat from a space heater in winter. Avoid placing the copier in an area filled with corrosive gas. Avoid any area higher than 2,000m (6,500 feet) above sea level. Place the copier on a strong and level base. Avoid any area where the copier may be subjected to frequent strong vibration.

4. 5. 6.

1-1

February 1. 1986

1-2. Minimum Space Requirements 1. Front :70 cm (27-1/2") 2. Back :12 cm (4-3/4") 3. Right :70 cm (27-1/2") 4. Left :70 cm (27-1 /2")

More than 12 cm (4-3/4")

1-3. Power Source 1. Input voltage level 110V/60Hz : More 115V/60Hz : More 220V/50Hz : More 240V/50Hz : More 3. Permissible extension cord: At least 300V, 30A capacity and less than 5m (16.4") long. Note:

than 12A than 12A than 6A than 6A

1. Be sure to ground the machine.
(Do not connect the grounding wire to a gas pipe. 2. Make sure the plug is firmly inserted in the outlet. 3. Avoid multi-wiring. 4. Do not set anything on the power cord.

2. Permissible voltage fluctuation: 10%

1-2

SECTION 2

UNPACKING AND INSTALLATION

August 1, 1985

2-1. Unpacking Procedure

1. Take out the accessory box and the machine.
2. Remove the two cushion blocks. 3. Open the vinyl bag and take out the machine.

2-1

August 1, 1985

Check that the accessories are in the quantities according to the following list. Cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 pcs. (One is in the machine.) Cassette Cover . . . . . . . . . . . . . . . . . . . . . . . ..1 pc Copy Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 pc

Manual Feed Guide . . . . . . . . . . . . . . . . . . . . . . 1 pc Master Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 pc NOTE: Keep it in the box until installing it in the copier. Toner . . . . . . . . . . . . . . . . . . . . . . 1 cartridge (Black)
q

Operating instructions . . . . . . . . . . . . . . . . . . . N.E.C.R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1 pc 1

pc

Envelope for N.E.C.R. (115Vonly) . . . . . . . . . 1 pc Multi-lingualDecal(220/240Vonly) . . . . . . . 1 pc Paper Size Decal . . . . . . . . . . . . . . . . . . . . . . . .
1 pc

2-2. Installation Procedure

1. Remove the two strips of tape.

2. Open the front cover.

3. Move the slider to the center and push down the release lever to open the top unit.

2

4. Remove the roller retainer.

5. Remove the two strips of tape.

6. Remove the three wedges from the new master unit. Note: Do not touch the master (purple material) and avoid exposing it to light.

2-4

August 1, 198

7. Insert the master unit into the copier.

8. Peel off the master.

cover that protects the

9. Push the master unit up until it locks in place.

2-5

August 1, 1985

10.

Install the manual feed guide on the right side of the machine.

11. Shake the new cartridge of toner well.
12. Set the pins of the toner cartridge into the slots on the development unit. Then, turn the cartridge counterclockwise.

13.

Install the cartridge crank onto the shaft and turn the cartridge crank clockwise to strip off the cartridge seal. Then, remove the cartridge crank and lower the top unit. Note: At installation, it is recommended to load two cartridges of toner.

2-6

August 1, 1985

14.

Lower the top unit.

15.

Close the front cover.

16.

Pull out the cassette tray unit it stops

L

I

2-7

August 1, 1985

17. Remove the strip of tape and the silica gel.

18.

Take out the cassette and the two cushion blocks.

I

I 19. Load paper into the cassette so that it is flush with the front and side fences. NOTE: The cassette holds approximately 250 sheets.

2-8

August 1, 198

20.

Press down the corners of the paper stack so that they catch underneath the corner separators.

21.

Set the cassette on the cassette tray.

22.

Set the paper size flap.

2-9

August 1, 1985

23. Push in the cassette tray until it stops.

24. Install the copy tray on the left side of the machine.

25. When not using this instruction booklet, place it in the holder on the back of the copier. 26. Check machine operation and copy quality. Fill out the New Equipment Condition Report.

This completes machine installation.

2-3. Cassette

Modification

1.

Remove the side fences and the rear fence (1 screw each).

2. 3. 4.

Reposition the fences to the desired paper size position. Insert the actuators in the proper slots on the front of the cassette. Attach the proper paper size decal on the paper size flap.

2-11

August 1, 1985

2-4. Main Transformer Conversion (220 to 240V only)

1. Open the top unit and remove the development unit.
2. 3. 4. Swing up the upper feed guide (1 screw). Remove the lower feed guide (4 screw). Uncouple the 220V connector and couple the 240V connector.

2-12

August 1, 1985

2-5. Key Counter Holder Installation Note: Three types of counters are recommended for this copier (Ricoh, Hecon, and Hengstler key counters). Remove the upper right cover (4 screws.) Remove the key counter cover and fixing plate from the key counter bracket (2 screws). Hold the fixing plate on the inside of the key counter bracket and insert the key holder.

1. 2. 3.

2-13

4.

Align the holes in the fixing plate with the mounting holes of the key counter holder and secure the key counter holder. Note: The fixing plate has three sets of holes. Make sure to use the holes that match the type of counter when installing. Remove the shorting plug from the key counter connector. Note: This shorting plug is usually on the harness. Plug in the key counter harness. Reassemble the copier. check its operation. Insert the key counter and

5.

6. 7.

2-14

2-6. Unpacking Procedure 1. Take out the accessory box and the machine. 2. Remove the two cushion blocks. 3. Open the vinyl bag and take out the machine. 1 ) Accessory Box 2) Cushion Blocks

2-15

February 1, 1986

4. 1]

Check that the accessories are in the quantities according to the following list. Cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 pcs. 3 pcs. (Asia) (One is in the machine.)

2) 3) 4)

Cassette Cover . . . . . . . . . . . . . . . . . . . . . . . . . 1 pc Copy Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 pc Paper Tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 pc

5) Master Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 pc NOTE: Keep it in the box until installing it in the copier. 6) Toner . . . . . . . . . . . . . . . . . . . . . . 1 cartridge (Black) 7) 8) 9) 1 0) 11) Operating Instructions . . . . . . . . . . . . . . . . . . . 1 pc N.E.C.R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 pc EnveIope for N.E.C.R. (USA only) . . . . . . . . . . 1 pc Multi-lingualDecal(220/240V only) . . . . . . . 1 pc Paper Size Decal . . . . . . . . . . . . . . . . . . . . . . . . 1 pc

February 1, 1986

2-7. Installation Procedure

1,

Remove the two strips of tape.

2.

Open the front cover.

3.

Move the slider to the center and push down the release lever to open the top unit.

2-17

February 1, 1986

4. Remove the roller retainer.

5. Remove the two strips of tape.

6. Remove the three wedges from the new master unit. Note: Do not touch the master (purple material) and avoid exposing it to light.

2-18

February 1, 1986

7. Insert the master unit into the copier,

8. Peel off the polyester cover that protects the master.

9. Push the master unit up until it locks in place.

2-19

February 1, 1986

10. Remove the two strips of tape and one cushion block from the paper tray.

11. Install the paper tray on the right side of the machine.

12. Shake the

new cartridge of toner well.

13. Set the pins of the toner cartridge into the slots on the development unit. Then, turn the cartridge counterclockwise

Februarv 1. 1986

14. Install the cartridge crank onto the shaft and turn the cartridge crank clockwise to strip off the cartridge seal. Then, remove the cartridge crank and lower the top unit. Note: At installation, it is recommended to load two cartridges of toner.

15. Lower the top u-nit.

16. Close the front cover.

2-21

February 1, 1986 I 1

17. Pull out the cassette tray unit it stops.

18. Remove the strip of tape and the silica gel. 1 ) Silica Gel

19. Take out the cassette and the two cushion blocks. 1 ) Cushion Blocks

Februarv 1. 1986

20. Load paper into the cassette so that it is flush with the front and side fences. Note: The cassette holds approximately 250 sheets.

21. Press down the corners of the paper stack so that they catch underneath the corner separators.

22. Set the cassette on the cassette tray.

2-23

February 1.1986

23. Set the paper size flap.

24. Push in the cassette tray until it stops.

25. Slide the drawer tray to the position of the paper size.

2-24

26.

Load paper into the paper tray.

27.

Adjust the paper guides so that they contact both sides of the stack firmly.

28.

Install the copy tray on the left side of the machine.

2-25

February 1, 1986

29. When not using this instruction booklet, place it in the holder on the back of the copier. 30. Check machine operation and copy quality. Fill out the New Equipment Condition Report.

This completes machine installation.

2-8,

Main Transformer Conversion (220 to 240V only) Open the top unit and remove the development unit. Swing up the upper feed guide (1 screw). Remove the lower feed guide (4 screw). Uncouple the 220V connector and couple the 240V connector. Remove the upper rear cover (2 screws). Shift the jumper wire (JP401) on the AC drive board from T401 to T402.

1. 2. 3. 4. 5. 6.

Note: Slide the terminal lock up to release the jumper wire and slide it down to secure the wire in position.
2-26

SECTION 3

PREPARATIONS FOR TRANSPORTING THE COPIER

February1,1986 r

Before moving the copier from its place of installation, be sure to prepare it for transportation as follows. The copier may be badly damaged if it is moved without proper preparation. Note: * If the copier is installed with the DF or sorter, remove them first. (See the DF or Sorter Installation procedure.) . 3-1. Short Distance (Room to Room) 1. Remove the copy tray and manual feed guide/paper tray. 2. Remove the cassette tray. 3. Secure the slider with strips of tape. CAUTION: When transporting the copier, always use the grips on the front and rear to handle the copier. Never grip the bottom plate of the copier.

(FT2050)

(FT2070)

3-1

3-2. Long Distance (by vehicle) 1. Remove the copy tray and manual feed guide/paper tray. 2. Remove the cassette tray. 3. Open the clamshell and secure the development unit with strips of tape. 4. Secure the slider with strips of tape. CAUTION : * While transporting the copier, always cover the copier to avoid direct sunshine. * When the copier is in a vehicle, do not expose it to extreme hot or cold conditions. * When transporting the copier, always use the grips on the front and rear to handle the copier. Never grip the bottom plate of the copier.

3-2

SECTION 4

SERVICE TABLES AND REMARKS

February 1, 1986

4-1.

Maintenance Guide

Note: This guide shows the items to be cleaned and their effect on the copies if they are not clean. Clean these items as per the maintenance table.

[ FT2050 ]

4-1

4-2

February 1, 1986

4-2. Maintenance Table NOTE: When you visit the customer for a service call, perform the following.

SECTION Erase and Optics `

ITEM TO BE CLEANED 1. Erase Lamp/Master Sensor 2. Fiber Optics (FT2050) 3. Exposure Glass 4. Platen Cover Sheet 5. Exposure Lamp 6. Reflector 7. Exposure Sensor (FT2050) 8. Auto ID Sensor 9. Lens/Mirrors (FT2070)

MATERIAL TO BE USED Soft Cloth (Water) or Blower Brush Fiber Optics/Corona Wire Cleaner or Silicone Cloth Soft Cloth (Glass Cleaner) Soft Cloth (Water or Alcohol) Wet Soft Cloth, then Dry Soft Cloth Silicone Cloth Blower Brush Blower Brush Silicone Cloth Toner Agitator (when necessary) Soft Cloth (Water) or Blower Brush

Development and Quenching

1. Toner Metering Blade 2. Quenching Lamp

4-3

February 1, 1986

SECTION Paper Feed and Transport

ITEM TO BE CLEANED 1. Paper Feed Roller 2. Friction Pad 3. 1st Relay Roller 4. 2nd Relay Roller 5. Registration Roller 6. Cassette Pad 7. Paper Guide Plates 8. Transport Belt 9. Paper Tray Pads (FT2070) 10. Pick-up Roller (FT2070) 11. Tray Feed Roller (FT2070) 1. Hot Roller Strippers 2. Thermistor 3. Paper Guide Plates 1. Charge Corona Wire 2. Transfer Corona Wire 3. Corona Casings 4. Transfer Guide Plate Soft Soft Soft Soft Soft Soft Soft Soft Soft Soft Soft

MATERIAL TO BE USED Cloth Cloth Cloth Cloth Cloth Cloth Cloth Cloth Cloth Cloth Cloth (Water) (Water) (Water) (Water) (Water) (Water) (Water) (Water) (Water) (Water) (Water)

Fusing

Soft Cloth (Water) Soft Cloth (Alcohol) Soft Cloth (Water) Fiber Optics/Corona Wire Cleaner or Blower Brush Cotton Swabs or Soft Cloth (Alcohol) Soft Cloth (Water) Soft Cloth (Water) Blower Brush

Corona

Others

1. Grid Plate of Master Unit

4-4

February 1 1986

4-3. Lubrication Table NOTE: Lubrication must be done within the number of copies indicated in the following table.

SECTION Erase and Optics Paper Feed and Transport

ITEM TO BE LUBRICATED 1. Fiber Optics Holder (FT2050) 1. Paper Feed Clutch Spring 2. 1st Relay Clutch Spring 3. Registration Clutch Spring 4. Tray Feed Clutch Spring (FT2070) 5. Pick-up Clutch Spring (FT2070)

NO. OF COPIES As Necessary

LUBRICATING

MATERIAL

Grease-501

60 K 60 K 60 K 60 K

Mobil Temp 78 Mobil Temp 78 Mobil Temp 78 Mobil Temp 78

60 K

Mobil Temp 78

Others

1. Master Clutch Spring

60 K

Mobil Temp 78

4-5

4-4. Expected Life of Parts NOTE: Main parts have the following expected service life.

SECTION Development

PART DESCRIPTION 1. Toner Metering Blade

EXPECTED SERVICE LIFE 60 K (Black) 6 K (Color) 60 K 60 K

Paper Feed and Transport

1. Friction Pad 2. Tray Friction Pad

(FT2070)
Fusing 1. Hot Roller 2. Hot Roller Strippers 3. Pressure Roller 1. Charge Corona Wire 2. Transfer Corona Wire 120K 120K 180K 80 K 80 K

Corona

4-6

August 1, 1985

4-5. Special Tools and Lubricants NO. DESCRIPTION Positioning Ring Test Chart OS-A3 Digital Multimeter Deluxe Test Lead . Accessory Kit Grease - Mobil Temp 78 Grease - Shin-etsu Silicon G-501 PART NO. 52169003 54209502 54209507 54209508 54479078 52039501 REMARKS

1.
2. 3. 4. 5. 6. -

100 sheets/set BECKMAN RMS3030 BECKMAN DL241 400 g/can 50 g/bottle

/
4-7

February 1, 1986

4-6. Points to Remember Master Unit

2. 3. 4. 5.

Do not touch the corona wire with oily hands. Instruct the operator how and when to use the corona wire/fiber optics cleaner. Clean the corona wire at every service call. Clean the grid plate with a blower brush.

1.

Never touch the master belt and do not apply oil or an organic solvent to prevent the master belt from being deformed. When the master unit is out of the machine or the upper clamshell is open, avoid exposing it to a bright light or direct sun light to prevent the master belt from being light fatigued. Always store master unit in a cool and dry place. Do not leave master units in vehicles during hot weather. It does not matter whether the master units are installed in machines or separate. The variable resistor for adjusting the master sensor is factory preset and should not be adjusted in the field. Keep the master unit level when it is out of the copier.

2.

Optics

1.
2.

Clean the reflector, fiber optics/lens and mirrors, exposure lamp at every service call. The variable resistor (VR - 1 ) on the exposure sensor board is factory preset and should not be adjusted in the field (FT2050). The 2nd mirror positioning screws are factory preset and should not be adjusted in the field. (FT2070) The exposure lamp position should be adjusted when the exposure lamp has been removed or replaced. (FT2070) Check the copy image at every service call and adjust it if necessary. (FT2070) The exposure glass has markings on every corner of its upper surface. When replacing the exposure glass, make sure that the markings are on the side facing upwards. (FT2070)

3. 4.

3.

5.

4.

6.

5. 6.

Charge

1.

The variable resistor (VR-C) is factory preset and should not be adjusted in the field.

4-8

February 1, 1986

Development

Transfer

1.

When white vertical lines appear on the copy, use the toner agitator to clean the toner metering blade. Do not use the toner agitator unless copy image problems occur. This is to prevent damaging the toner metering blade. Be careful not to nick or scratch the development roller surface. Be careful not to use a black development unit for color copying, or a color development unit for black copying. Always store toner in a cool and dry place. Instruct the operator to ensure that the appropriate color plate is attached to all color development units.

1.

The variable resistor (VR-T) on the transfer/ bias power pack is factory preset and should not be adjusted in the field. Do not touch the transfer corona wire with oily hands. Clean the transfer corona wire with a soft cloth at every service call.

2.

2. 3.

3. 4.

Paper Feed

1.
2. 3.

Do not allow the paper feed rollers to become oily or dirty. The improper installation of paper size actuators causes misfeeds and erase problems. Instruct the operator to ensure that one sheet of OHP transparency is loaded at a time and that the OHP transparency lever is down when copying onto transparencies (FT2070). The improper setting of side and rear fences of the paper tray may cause erase problems (FT2070).

5. 6.

4.

4-9

August 1, 1985

Fusing

1.
2.

Be careful not to damage the hot roller strippers. Do not touch the fusing lamp with your bare hands. Make sure that the fusing lamp does not contact the hot roller. Clean the fusing thermistor and hot roller strippers at every service call.

3.

4.

4-10

SECTION 5

REPLACEMEMT AND ADJUSTMENT

5-1. Exterior Removal FT2050 Upper Clamshell . . . . Lower Clamshell . . . . FT2070 Upper Clamshell . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4-2

Lower Clamshell . . . . . . . . . . . . . .

5-1

August 1, 1985

Upper Clamshell (1) Platen cover (2 buttons) 1. Pull up both buttons and lift the platen cover slightly and slide it to the rear to remove. Copy Tray Upper Right Cover (4 screws) 1. Open the clamshell slowly. 2. Move the slider to the far left home position by pressing the slider lock lever. Upper Left Cover (4 screws) 1. Open the front cover. 2. Move the slider to the right, and loosen the slider stopper screw. Operation Panel (2 screws and 1 connector) 1. Open the front cover to remove the screws.

(7) Inner Cover (1 E-ring and 2 screws) 1. Remove the operation panel. 2. Open the clamshell and remove the release lever. NOTE: * When installing the inner cover, be sure that the positioning tabs engage with the metal frame correctly.
Slider Stopper Screw \ Platen Cover Upper Rear Cover #

(2) (3)

(4)

(5)

NO' E: * When installing the operation panel, the edge of the exposure glass must be in the groove of the operation panel. (6) Upper Rear Cover (2 screws)

5-2

August 1, 1985

Lower Clamshell

(1) Front Cover (2 screws) 1. Open the clamshell to remove the
2. screws. Pull out the cassette holder to remove the front cover.

(5) Lower Left Cover (2 screws) Remove the front cover (2 screws), the 1. upper rear cover (2 screws), and lower rear cover (4 screws) to remove the lower left cover. (6) Exit Cover (2 screws)

NOTE: * When installing the front cover, be sure that the tabs engage with the positioning notches. (2) Manual Feed Guide 1. Open the clamshell. 2. Lift the manual feed guide and remove. (3) Lower Right Cover (2 screws) (4) Lower Rear Cover (4 screws) 1. Remove the upper rear cover (2 screws). 2. Open the clamshell and remove. NOTE: * Remember that one screw is longer than the other three screws. The longer screw prevents the upper paper feed guide plate from being turned over.

5-3

August 1, 1985

(7) Cassette Tray 1. Push down the cassette release lever. 2. Pull out the cassette tray. 3* Lift the front of the cassette tray slightly, and remove. (8) Cassette Tray Cover (3 screws) 1. Pull out the cassette tray and remove.

5-4

February 1, 1986

Upper Clamshell (FT2070) (1) Platen cover (2 pushlocks) 1. Pull up both pushlocks, lift the platen cover slightly and slide it to the rear to remove. (2) Copy Tray (3) Upper Right Cover (4 screws) 1. Open the front cover. 2. Move the slider to the far left. (4) Upper Left Cover (4 screws) 1. Open the front cover. 2. Move the slider to the right. (5) Inner Cover (1 E-ring and 2 screws) 1. Move the slider to the center and open the clamshell. 2. Remove the release lever (1 E-ring). NOTE: When installing the inner cover, be sure that the positioning tabs engage with the metal frame correctly.

(6) Operation Panel (2 screws and 1 connector) 1. Remove the inner cover (1 E-ring and 2 screws). NOTE: When installing the operation panel, the edge of the exposure glass must be in the groove of the operation panel. (7) Upper Rear Cover (2 screws)

5-4-1

Lower Clamshell (FT2070) (1) Front Cover (2 screws) 1. Open the clamshell to remove the screws. 2. Pull out the cassette holder to remove the front cover. NOTE: * When installing the front cover, make sure that the tabs engage with the positioning notches. " (2) Paper Tray 1. Open the clamshell. 2. Lift paper tray and remove. (3) Lower Right Cover (2 screws) (4) Lower Rear Cover (4 screws) 1. Remove the upper rear cover (2 screws). 2. Open the clamshell and remove, NOTE: * Remember that one screw is longer than the other three screws. The longer screw prevents the upper paper feed guide plate from being turned over.

(5) Lower Left Cover (2 screws) 1. Remove the front cover (2 screws), the upper rear cover (2 screws), and lower rear cover (4 screws) to remove the lower left cover. (6) Exit Cover (2 screws)
Longer Screw

5-4-2

5-2. Erase and Optics FT2050 Erase Lamp Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 Slider Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-7 Slider Drive Wire Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-8 Fiber Optics Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9 Exposure Lamp Unit Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-10 . Slider Clutch Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-11 Fiber Optics Holder Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12 FT2070 Erase Lamp Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12-1 Exposure Lamp Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12-2 Exposure Lamp Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-12-3 Slider Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-12-4 Slider Drive Wire Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-12-5 Lens Drive Wire Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12-7 Lens Drive Motor Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-12-9 Home Position Sensor Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-12-10

August 1, 1985

Erase Lamp Replacement

1.
2.

Open the clamshell and remove the upper right cover. Pull the master release hook and remove the master unit.

CAUTION: * Do not touch the master belt (purple material), and avoid exposing it to light. NOTE: * When installing the master unit, make sure that the master rides in the guide rails. 3. 4. Remove one screw and one connector. Slide the erase lamp unit to the rear and remove by turning its front end counterclockwise.

5-6

August 1, 1985

Slider Removal

I

1.
2. 3. 4.

Remove the platen cover. Remove the upper rear cover, Remove the harness from the 2 clamps. Remove the drive wire bracket (1 screw and 1 connector) together with the slider lock lever, slider release lever, and slider lock spring. Remove the slider drive wire together with the slider drive pulley (1 wire spring).

5.

NOTE: * Position the slider lock notch just above the slider drive pulley so that the slider drive pulley can be removed. 6. Remove the slider stopper, move the slider to the left, and then remove.

NOTE: * For re-installation, see "Slider Drive Wire Replacement" section. * Be careful not to damage the actuator of the home position switch when reinstalling the slider.

5-7

August 1, 1985

Slider Drive Wire Replacement

8.

1.
2.

Remove the slider drive wire. (See step 1 to 5 of "Slider Removal" section.) Position the slider lock notch just above the slider drive pulley. Thread the bead on the drive wire into the round hole on the right side of the slider. . Wind the drive wire around the slider drive pulley three times as shown to the right. Re-install the slider drive pulley,

Re-install the drive wire bracket, slider lock lever, slider release Iever, harness and slider rock spring 1 stud screw and 1 connector

3.

NOTE: * When re-installing the slider, the front end of the slider must be in the groove of the operation panel, and rest on the fiber optics holder.

4.

5.

NOTE: * Make sure the slider drive pulley engages properly. 6. Thread the eye of the drive wire into the slot on the left side of the slider. Attach the end of the wire spring onto the eye and the another end onto the spring anchor.

7.

NOTE: * Make sure that the slider moves smoothly and that the wire does not double over.

5-8

August 1, 1985

Fiber Optics Removal

1.
2. 3. 4. 5. 6.

Remove the slider. section.)

(See "Slider Removal"

Remove the upper right cover (4 screws). Close the clamshell. Remove the reflector (2 screws). Remove the two leaf springs (1 screw each). Loosen the exposure screws). Pull out the fiber optics, sensor bracket (2

7.

NOTE: * Do not touch the upper and lower surfaces of the fiber optics. * Fiber optics must contact the fiber optics holders.

August 1, 1985

Exposure Lamp Unit Replacement

1.
2.

Remove the slider. section.)

(See "Slider Removal"
Exposure Lamp Unit \ I Relay Board

Remove the operation panel (2 screws and 1 connector). Remove the upper left cover and upper right cover. . Close the clamshell. Remove the exposure lamp unit together with exposure lamp bracket (1 screw, 1 washer and 3 connectors). Remove the exposure lamp unit from the exposure lamp bracket (1 screw).

3.

4. 5.

6.

NOTE: * Avoid touching the aperture of the exposure lamp. * When re-installing the exposure lamp unit, make sure the aperture is facing up.

5-1o

Slider Clutch Removal

1.
2.

Remove the upper rear cover. Remove the drive wire bracket. (See "Slider Removal" section.) Remove the timing belt and the master/ development drive pulley (1 E-ring). Remove the slider clutch bracket (3 screws). Remove the slider drive gear and the slider reverse gear (1 E-ring and 1 spacer each), then remove the forward and the reverse clutch.

3.

4. 5.

Slider Lock Lever

Spring

5-11

August 1, 1985

Fiber Optics Holder Lubrication

1.
2.

Remove the slider. (See "Slider Removal" section.) Apply Grease 501 to the top of the fiber optics holders.

I

February 1, 1986

Erase Lamp Replacement (FT2070)

1.
2.

Unplug the copier. Remove the upper right cover and upper rear cover. Remove the ac drive board (2 screws). Uncouple the 8 pin connector behind the ac drive board. Open the clamshell while pressing down the release lock.

3. 4.

5.

CAUTION: * Be careful not to damage the slider. 6. Pull the master release lever and remove the master unit.

CAUTION: * Do not touch the master belt (purple material), and avoid exposing it to light. NOTE: * When installing the master unit, make sure that the master rides in the guide rails. 7. Remove the erase lamp unit by sliding it to the rear and then to the left (1 screw).
5-12-1

February 1, 1986

Exposure Lamp Replacement (FT2070)

1.
2.

Remove the platen cover and slider cover (5 screws). Remove the upper right cover and the upper rear cover. Remove the slider stopper (1 screw). Move the slider to the- far left, past the home position sensor. Remove the exposure lamp cover (2 screws). Rotate the lamp terminal as shown, and take out the lamp. 8

3. 4.

5. 6.

CAUTION: * Do not handle the exposure lamp with your bare hands. Use a strip of paper. Oil from your fingers will result in lamp discoloration. 7. 8. Install a new exposure lamp. Check the lamp position and the light intensity. (See "Exposure Lamp Positioning" and "Light Intensity Adjustment" sections.)

/

5-12-2

February 1. 1986

Exposure Lamp Positioning (FT2070) 1. 2. 3. Remove the upper right cover and the upper rear cover. Remove the slider stopper (1 screw).

8.

To correct the position of the filament, turn the adjusting knobs until the correct position is achieved.

Move the slider to the far left, past the home position sensor. (See "Exposure Lamp Rep- 9. lacement" section.)
s m

NOTE: * Be sure to tighten the lock screw after adjusting the lamp position. Check for uneven exposure and light intensity. (See "Uneven Image Density Adjustment" and "Light Intensity Adjustment" sections.)
Adjusting Plate Exposure Lamp Cover \ \

Horizontal Positioning -- 4. Slide the front and rear adjusting plates out of the way so that the sight holes can be seen (1 screw each). View the lamp filament through the sight holes on the top of the exposure lamp cover. The filament should be directly beneath the sight holes. To correct the position of the filament, turn the adjusting screws.

5.

6.

Vertical Adjustment 7. View the lamp filament from the right through the sight holes. The filament should be the level with the sight holes on the side of the reflector.

5-12-3

February 1, 1986

Slider Removal (FT2070)

1.
2. 3.

Remove the platen cover and upper rear cover. Remove the slider cover (5 screws). Remove the ac drive board (2 screws).

NOTE: * It is not necessary to disconnect the connectors. 4. 5. Remove the slider lock spring. Remove the slider home position sensor assembly (2 screws). Remove the slider lock Iever and bracket. Remove the slider wire tension spring. Remove the slider drive wire. Remove the slider by moving it to the far left. I

6. 7. 8. 9.

NOTE: * For reinstallation, see "Slider Drive Wire Replacement" section. * The exposure glass has markings on its upper surevery corner of face. When replacing the exposure glass, make sure that the markings are on the side facing upwards.
5-12-4

February 1, 1986

Slider Drive Wire Replacement (FT2070)

1.

Remove the slider drive wire. Removal" section.)

(See "Slider

Installation 2. Insert one drive wire bead in the notch at the far right of the slider. Draw the wire" over the slider pulley (inside track) and under the slider drive tension pulley. Wind the drive wire around the slider drive pulley (five and a half turns) and around the slider pulley (half a turn). Insert the other drive wire bead in the notch at the far left of the slider and connect the slider drive tension spring.

3.

4.

5.

NOTE: * Make sure that the slider moves smoothly and that the wire does not double over.

5-12-5

February 1, 1986

6.

Seat the slider lock wire bead in its notch as shown to the right. Reinstall the slider lock lever and bracket after seating the bead of the slider lock wire. Reinstall the home position sensor assembly (2 screws) and the slider lock spring. Reinstall the ac drive board (2 screws). .

7.

8.

9.

Slider Lock Wire

5-12-6

February 1, 1986

Lens Drive Wire Replacement (FT2070)

1.
2.

Remove the upper right cover Remove the slider. (See "Slider Removal" section.) Remove the Auto ID sensor board from the exposure lamp assembly (2 screws and 1 harness clamp). . Remove the exposure lamp assembly (2 screws and 1 connector). Remove the 3rd mirror cover (2 screws). Remove the lens home position sensor together with the bracket (1 screw). Remove the 3rd mirror tension spring and slide the 3rd mirror assembly away from the lens drive pulley. Remove the tension pulley stopper (1 screw). Slide the lens drive tension pulley towards the lens drive pulley, and remove the lens drive wire.

3.

4.

5. 6.

7.

8. 9.

5-12-7

February 1, 1986

Installation 9. Place the short end bead of the new wire in the right slot of the lens housing assembly. Loop the drive wire one and half turns around the lens drive pulley. Position the center bead in the cutout of the lens drive pulley. Run the drive wire around the lens drive tension pulley. Hook the long end bead in the left slot of the lens housing. Reinstall the tension pulley stopper (1 screw). The gap between the lens drive tension pulley and the tension pulley stopper should be 0.3 0.2 mm. Reassemble.

10.

11.

12.

13.

14.

5-12-8

February 1, 1986

Lens Drive Motor Replacement (FT2070)

1.
2. 3.

Remove the inner cover. Remove the main board (3 screws). Uncouple the 6 pin connector behind the main board and remove the lens drive motor harness from the wire clamp. Remove the lens drive wire. (See "Lens Drive Wire Replacement" section.) Remove the lens drive motor assembly (2 screws). Remove the lens drive motor unit from the assembly (2 screws). Separate the lens drive motor from the output gear (1 allen set screw).

4.

5.

6.

7.

5-12-9

February 1, 1986

Home Position Sensor Replacement (FT2070)

1.
2. 3.

Remove the upper rear cover. Remove the ac drive board (2 screws). Remove the home position sensor together with the bracket (2 screws). Remove the home position sensor from the bracket (1 connector).

4.

5-12-10

February 1, 1986

5-3. Development and Quenching Toner Metering Blade Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-14 Quenching Lamp Replacement (FT2050) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-15 Quenching Lamp Replacement (FT2070) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-16

5-13

August 1, 1985

Toner Metering Blade Replacement

1.
2. 3.

Open the clamshell and remove the development unit. Remove the toner cartridge. Remove the front cover of the development unit (2 screws). Remove the roller cover bracket (1 screw), and take off the development roller cover. Remove the toner metering blade (2 screws).
Roller Cover Bracket /

4.

5.

NOTE: * Avoid damaging or bending the metering blade. * Do not touch the surface of the development roller.

5-14

August 1, 1985

Quenching Lamp Replacement

1.
2.

Remove the upper left cover. Remove the quenching lamp (1 screw and 1 connector).

5-15

February 1, 1986

Quenching Lamp Replacement (FT2070)

1.
2. 3. 4.

Unplug the copier. Remove the upper rear cover. Remove the ac drive board (2 screws). Uncouple the 2 pin connector behind the ac drive board. Remove the toner overflow sensor assembly. (See "Toner Overflow Sensor Replacement.") Remove the charge varistor (1 screw). Remove the quenching lamp by sliding the quenching lamp unit in the direction of the arrows and lifting it out.

5.

6. 7.

NOTE: * When reassembling, make sure that the quenching lamp unit is seated correctly.

5-16

5-4. Paper Feed and Transport Paper Feed Roller Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-18 Friction Pad Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19 Paper Feed Clutch Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..5-20 Registration Clutch Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-21 Paper Size Switch Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-22 Paper Feed Sensor Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-23 Transport Belt Replacement.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24 Paper End Sensor Replacement (FT2070) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-24-1 Pick-up Roller Replacement (FT2070) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-24-2 Tray Feed Roller Replacement (FT2070) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-24-3 Pick-up and Tray Feed Clutches Lubrication (FT2070) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24-5 Paper Width Sensor Replacement (FT2070) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-24-6 Paper Length Sensor Replacement (FT2070) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-24-7

5-17

August 1, 1985

Paper Feed Roller Replacement

1.
2.

Pull out the cassette tray from the copier. Open the clamshell and remove the manual feed guide.

4.

Remove the paper feed roller (1 snap ring). .

NOTE: * Be careful not to touch the paper feed roller with oily hands.

5-18

August 1, 1985

Friction Pad Replacement

1.
2.

Pull out the cassette tray from the copier. Peal off the friction pad from the friction pad holder. Install new friction pad.

3.

NOTE: * Be careful not to touch the friction pad with oily hands.

5-19

August 1, 1985

Paper Feed Clutch Lubrication

1.
2.

Open the clamshell and remove the lower rear cover. Remove the paper feed clutch bracket (2 screws, 2 E-rings, and 2 bushings). Remove the paper feed roller gear, clutch sleeve, and clutch spring. Apply Mobil Temp 78 to the clutch spring and output hub.

3.

4.

NOTE: * The teeth of the clutches have one direction. Be careful not to install them incorrectly.

5-20

August 1, 1985

Registration Clutch Lubrication

1.
2.

Remove the upper rear cover and the lower rear cover. Remove the registration clutch bracket (2 screws, 1 E-ring and 1 bushing). Pull the engage gear bracket and move it to the upper right. . Remove the output hub, clutch sleeve, clutch spring and the input hub (1 allen set screw). Apply Mobil Temp 78 to the clutch. Re-install the clutch so that the radial end of the spring and the gear side of the clutch sleeve are facing the registration roller. Position a 0.2mm thick gauge between the shaft shoulder and the idle gear. Push the registration clutch towards the

3.

4.

5. 6.

7.

8.

August 1, 1985

Paper Size Switch Replacement

1.
2. 3.

Pull out the cassette tray. Remove the lower rear cover. Remove the paper size switch together with the bracket (3 screws). Remove the paper size switch from the bracket (2 screws and 1 connector).

4.

NOTE: * When installing the paper size switch in the bracket, be sure that the connector faces to the upper right hand side, as shown in the figure.

5-22

August 1, 1985

Paper Feed Sensor Replacement

1.
2. 3.

Open the clamshell. Remove the development unit. Loosen the screw securing the lower rear cover. Swing up the upper paper feed guide plate. . Remove the lower feed guide (4 screws). Remove the paper feed sensor (1 screw and 1 connector).

4. 5. 6.

NOTE: * When closing the clamshell, be sure to return the upper paper feed guide plate to its original position. Otherwise, the master will be damaged. * Do not forget to tighten the screw securing the lower rear cover.

August 1, 1985

Transport Belt Replacement

1. Remove the copy tray.
2. Remove the front cover (2 screws), upper rear cover (2 screws), and lower rear cover (4 screws). 3. Remove the 2 clamshell stopper screws and stand the clamshell straight up. NOTE: * When standing the clamshell straight up, place a block that has a height of approximately 80 mm (approx. 3") in front of exit cover as shown to the upper right. 4. Remove the transport guide plate (2 screws). 5. Remove the safety cover (1 screw). 6. Remove the transport belt gear bracket (2 screws). 7. Remove the idle gear (1 E-ring). 8. Remove the paper reverse gear (1 E-ring and bushing). 9. Remove the first transport pulley from the transport belt holder. 10. Remove the transport belt from the holder.
5-24

NOTE: * When reassembling, make sure that the 1st transport pulley rides in the small grooves of the transport belt holder.

Paper End Sensor Replacement (FT2070)

1.
2.

Remove the paper tray. Remove the paper turn guide by sliding it to the rear and pulling its front to the right (2 screws). Remove the paper end sensor unit (1 screw and 1 connector). Remove the paper end sensor actuator by flexing the paper end sensor bracket gently. Separate the paper end sensor from the bracket (2 screws).

3.

4.

5.

NOTE: * When reassembling, make sure that the paper end sensor unit is seated correctly.

5-24-1

February 1, 1986

Pick-up Roller Replacement (FT2070)

1.
2.

Remove the paper tray. Rotate the pick-up roller shaft so that the flat sides align with the shaft holder openings. Pull the rear end of the roller shaft toward the right and slide it to the rear. Remove the pick-up roller.

Shaft Holder Opening

3.

4.

NOTE: * After reinstalling the pick-up roller, rotate the roller shaft so that the flat sides do not align with the shaft holder openings.

5-24-2

February 1, 1986

Tray Feed Roller Replacement (FT2070)

1.
2. 3.

Remove the front cover, paper tray, and the lower rear cover. Remove the development unit. Remove the tray feed solenoid (2 screws and 2 harness clamps). Unhook the sector gear spring and the tray . feed solenoid spring. Remove the paper feed clutch bracket (3 screws, 4 E-rings, and 4 bushings). Remove the first relay roller (2 springs and 2 bushings). Remove the rear development unit supports (2 screws). Remove the safety switch assembly (1 screw).

4.

5.

6.

7.

8.

NOTE: * It is not necessary to disconnect the safety switch. 9. Remove the front development unit support (2 screws).

10. Take off the width sensor cover (2 screws).
5-24-3

February 1, 1986

11.
12.

Remove the front and rear screws securing the feed roller housing. Remove the pick-up spring and the spring housing. Remove the E-ring and bushing from the front of the tray feed shaft. Slide the shaft to the rear and lift the front of the tray feed shaft. Remove the front feed roller housing by sliding it to the front. Remove the tray feed roller by sliding the pickup stay to the front (1 E-ring and 1 bushing).

13.

14.

15.

NOTE: * As the tray feed roller has a one-way clutch, it is important to mount the roller correctly. The pick-up roller drive belt should be towards the front. * When replacing the paper feed clutch bracket, secure it with the three screws, then slide the pick-up gear slightly to the front and align the sector gear and the pick-up gear as shown in the figure. (The marked tooth on the sector gear fits in between the marked teeth of the pick-up gear.)
5-24-4

February 1, 1986

Pick-up and Tray Feed Clutch Lubrication (FT2070)

1.
2.

Remove the lower rear cover. Remove the tray feed solenoid (2 screws and 2 harness clamps). Unhook the sector gear spring and the tray feed solenoid spring. Remove the paper feed clutch bracket (3 screws, 4 E-rings and 4 bushings). Remove the sector gear. Remove the pick-up clutch cam (1 E-ring). Remove clutch pawl assembly (1 E-ring). Remove the clutch assembly. Disassemble and lubricate the pick-up clutch and tray feed clutch.

3.

NOTE: * When reinstalling the spring clutches, be sure to insert the projections of the clutch springs into the notches. * When replacing the paper feed clutch bracket, secure it with the three screws, then slide the pick-up gear slightly to the front and align the sector gear and the pick-up gear. (The marked tooth on the sector gear fits between the marked teeth of the pick-up gear.)

4.

5. 6. 7. 8. 9.

CAUTION: * Be careful not to loose the clutch drive pin.

5-24-5

February 1, 1986

Paper Width Sensor Replacement (FT2070)

1.
2. 3. 4.

Open the clamshell. Remove the development unit. Remove the width sensor cover (2 screws). Replace the paper width sensors (1 connector each).

NOTE: * When reinstalling the width sensor cover, first insert the positioning tabs into the positioning notches.

5-24-6

February 1, 1986

Paper Length Sensor Replacement (FT2070)

1.
2. 3. 4.

Remove the paper tray. Remove the paper turn guide (2 screws). Disconnect the length sensor connector. Remove the screw securing the length sensor bracket. . While pushing in the length sensor interrupter, slide the length sensor bracket to the right.
Replace the paper length

5.

6.

sensor (1 screw).

Length Sensor Interrupter 5-24-7

5-5. Image Fusing Hot Roller Replacement . . . . 5-26

Pressure Roller Replacement . . . .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28 Thermistor Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29

Thermofuse Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-30 Hot Roller Strippers Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-31 Exit Sensor Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-32

5-25

August 1, 1985

Hot Roller Replacement

1.
2.

Open the exit assembly. (See "Hot Rollers Strippers Replacement" section.) Open the clamshell and stand it straight up. (See "Transport Belt Replacement" section.) Remove the fusing unit cover (2 screws). . Remove the fusing stay (4 screws). Holding the front end of the fusing lamp, remove the front terminal bracket (1 screw). Pull out the fusing lamp gently. Remove the rear terminal bracket (1 screw). Remove the safety cover (1 screw). Remove the front and rear pressure roller springs.

3. 4. 5.

6. 7. 8. 9.

CAUTION: * Remove the springs carefully as the springs have high tension.

5-26

August 1, 1985
I

10. Remove the bearing from the front end of the hot roller (1 C-ring). 11. Remove the gear from the rear end of the hot roller (1 C-ring). 12. Remove the hot roller carefully. NOTE: * Be careful not to damage the hot roller. * When installing the fusing lamp, make sure both "end of the fusing lamp properly contact the terminals. * After re-installing the pressure roller springs, check that the springs are mounted into the pressure lever properly.

5-27

August 1, 1985

Pressure Roller Replacement

1.
2.

Remove the hot roller. lacement" section.)

(See "Hot Roller Rep-

Remove the transport belt gear bracket (2 screws). Remove the 2 idle gears as shown to the right (1 E-ring each). . Remove the rear hot roller bearing. Remove the transport guide plate (2 screws). Swing the pressure roller cover away from the pressure roller (2 screws). Remove the pressure roller. Remove the front and rear bushings (1 E-ring each).

3.

4. 5. 6.

7. 8.

NOTE: * Be careful not to damage the pressure roller.

5-28

August 1, 1985

Thermistor Replacement

1.

Open the clamshell and stand it straight up. (See "Transport Belt Replacement" section.) Remove the fusing unit cover (2 screws). Remove the fusing stay (4screws). "Hot Roller Replacement" section.) . Remove the transport guide plate. "Transport Belt Replacement" section.) (See

2. 3.

4.

(See

5.

Remove the thermistor (1 screw and 1 connector).

5-29

Thermofuse

Replacement

1. Open the clamshell and stand it straight
up. (See''Transport Belt Replacement" section.) 2. Remove the fusing unit cover (2 screws). (See "Hot Roller Replacement" section.) Remove the fusing stay (4 screws). . Remove the transport guide plate (2 screws). (See "Transport Belt Replacement" section.) Remove the rear fusing lamp terminal (1 screw).

9. Lift the thermofuse stay and disconnect the thermofuse connector from the stay. 10. Remove the thermofuse. NOTE: * When installing the thermofuse, be sure to route the wire properly as shown in the figure.

3. 4.

5.

CAUTION: * When removing the rear fusing lamp terminal, be careful not to damage the fusing lamp. 6. Remove the thermofuse harness from the rear fusing lamp terminal (1 screw). 7. Disconnect the thermofuse connector from the fusing power supply board. 8. Remove the screw securing the front end of the thermofuse stay.

5-30

August 1, 1985

Hot Roller Strippers Replacement

1.
2. 3. 4.

Open the front cover. Remove the exit cover. Open the exit assembly (2 screws) Remove the hot roller strippers together with springs.

NOTE: * It is advisable to replace the hot roller strippers as a set.

5-31

August 1, 1985

Exit Sensor Replacement

1.
2. 3. 4.

Remove the lower left cover (2 screws). Open the front cover. Remove the exit cover (2 screws). Open the exit assembly and remove the exit assembly (2 screws). . Remove the transport guide plate (2 screws). (See "Transport Belt Replacement" section.) Remove the exit sensor (1 screw, 1 connector and 2 clamps).

5.

6.

August 1, 1985

5-6. Corona Charge Corona Wire Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-34 Transfer Corona Wire Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-35

5-33

August 1, 1985

Charge Corona Wire Replacement

1.

Open the clamshell and remove the master unit. (See "Erase Lamp Replacement" section.) Remove the charge corona unit (1 screw and 1 plug). Remove the front endblock cover by sliding . gently. Remove the rear endblock cover by sliding gently together with the charge corona wire. Remove the charge corona wire from the tension spring and front endblock.

2.

3.

4.

5.

NOTE: * Check the action of the tension spring after installation.

5-34

Transfer Corona Wire Replacement 1. Open the clamshell and remove both the lower rear cover and front cover. Remove the transfer corona unit (1 stud screw and 1 plug). Remove the front endblock cover gently. Slide the rear endblock cover to the rear and then remove it together with the transfer corona wire. Remove the transfer corona wire from the tension spring.

2.

3. 4.

5.

NOTE: * Check the action of the tension spring after installation.

5-35

5-7. Copy Image FT2050 Auto ID Sensor Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Leading Edge Registration Adjustment . . . . . . . . . . . . . . . . . . . . FT2070 Light Intensity Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Auto ID Sensor Adjustment.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Leading Edge Registration Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-40 . . . . . . . . . . . . . . .... .....
q

. . . . . . . . . . . . . . . . . . . . . . . 5-38
. . . . . . . . . . . . . . . . . . . . . . . . 5-39

5-40-1

. . . . . . . . ..... . . . . . . . . . . . 5-40-2

Leading Edge Erase Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-40-3 Uneven image Density Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-40-4 Horizontal Magnification Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-40-5 Vertical Magnification Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-40-6

5-37

February 1, 1986

Auto ID Sensor Adjustment

1. Turn off the main switch.
2. Remove the master unit. (See "Erase Lamp Replacement" section.) 3. Move the slider to the home position. NOTE: * When the slider is at the home position, the sensor pattern is just above the auto ID sensor. 4. 5. 6. 7. Remove the exposure sensor cover (1 screw). Turn on DIP SW 4 (test mode). Set meter to 20 Vdc setting. Connect meter leads and V-ohm to TP-2, TP1. Turn on the main' switch. Press the Copy Quantity key until 3 is displayed in the copy counter. Press the Start key to start the test mode. Adjust the VR2 so that the voltage is 1.7 0.1 V.

8. 9.

10. 11.

5-38

Leading Edge Registration Adjustment

1.
2.

Lay a ruler on the exposure glass as shown in the figure. Make a few copies and check that the leading edge registration is within specifications. Leading Edge Registration Specifications. 0 2.0 mm (0 0.08") [ Blank Leading Edge 3.5 3.0 mm (0.14 0.12") ]

NOTE: * When adjusting the leading edge . registration, move the slider to the home position and remove the exposure cover (1 screw).

3.

If it is out of the specifications adjust it using DIP SW 1, 2, and 3 on the main board.

5-39

February 1, 1986

Light Intensity Adjustment (FT2070) NOTE: * When the copier is set at the 3rd image density level, level 3 of the gray scale on the OS-A3 chart should be slightly visible and level 2 should be invisible on the copy. If the light intensity is not proper, adjust it as follows:

1.
2.

Turn off the main switch. . After removing the upper right cover, upper left cover, 3rd mirror cover and master unit, clean the optics (mirrors, lens, reflectors, and exposure glass). Reassemble. Open the front cover and remove the DIP switch cover (1 screw). Close the front cover and turn on the main switch. Select the 3rd image density level. Make a few copies of the OS-A3 chart. Adjust the light intensity by rotating VR101 so that level 3 of the gray scale on the OS-A3 chart is slightly visible on the copy.

3. 4. 5. 6. 7. 8.

5-39-1

February 1, 1986

Auto ID Sensor Adjustment (FT2070)

1.
2. 3.

Adjust the light intensity first. (See "Light Intensity Adjustment" section.) Turn off the main switch. Lay three sheets of white copy paper on the exposure glass and turn on DIP switch 101-4 (Test Mode) on the main board. Close the front cover, turn on the main switch. Press the Copy Quantity key until 5 is displayed in the Copy Counter. Press the Start key.

NOTE: * Do this adjustment as quickly as possible. If it takes over one minute to adjust, the thermoswitch opens.

4. 5.

6.

NOTE: * Confirm that the first image density level is selected automatically. 7. Wait for a few seconds until the light intensity is stable. Adjust VR102 until a hexadecimal number (base 16) between 7A and 7F is displayed in the Reproduction Ratio indicator.

8.

5-40-1

February 1, 1986

Leading Edge Registration Adjustment (FT2070)

1.
2.

Lay a scale on the exposure glass, aligning it with the original scale as shown to the right. Make a few copies and check that the leading edge registration is within specification. Leading Edge Registration Specification: O 2.0 mm (0 0.08")

NOTE: * Leading edge registration is the distance "R". R =L - 10mm (L-0.4") L : Distance between the edge of the paper and the 10 mm (0.4") mark on the scale. 3. If the registration is out of specification, remove the DIP switch cover (1 screw) and adjust it using DIP SW 101-1, 2 and 3 on the main board.

5-40-2

February 1, 1986

Leading Edge Erase Adjustment (FT2070)

1.
2.

Lay a scale on the exposure glass, aligning it with the original scale as shown to the right. Make a few copies and check that the leading edge erase is within specification. Leading Edge Erase Specification 3.5 1 mm (0.14 0.04")

NOTE: * Leading edge erase is the distance "E" in the figure (the length of scale that has been erased). 3. If the leading edge erase is out of specification, adjust it using DIP SW 701-2, 3 and 4 on the optics board.

5-40-3

February 1, 1986

Uneven Image Density Adjustment (FT2070)

1.
2.

Adjust the exposure lamp position. (See "Exposure Lamp Positioning" section.) Make a few copies of the OS-A3 chart and check that the difference in the image density between both sides is within specification. Side-to-side Image Density Specification: Within one level difference between the two gray scales on the OS-A3 chart.

3.

If side-to-side image density is out of specification, adjust it using the uneven density adjusting plate.

NOTE: * When adjusting the uneven density adjusting plate, remove the upper rear cover and the slider stopper (1 screw), then move the slider fully to the left.

5-40-4

February 1, 1986

Horizontal Magnification Adjustment (FT2070)
q

Resolution Adjustment 1. Make a few copies of the OS-A3 chart using the 1:1 reproduction ratio and check the resolution.

If the resolution is poor, adjust it by rotating the resolution cam to achieve optimum image. . Horizontal Magnification Adjustment 3. Make a few copies of the OS-A3 chart using the 1 :1 reproduction ratio and check that the horizontal magnification is within specification. Horizontal Magnification Specification: 0.5% NOTE: * The distance "H" on the copy of the OSA3 chart should be 10030.5 mm (4 0.02"). 4. If the horizontal magnification is out of specification, adjust it using the magnification cam.

2.

5-40-5

February 1, 1986

Vertical Magnification Adjustment (FT2070)

RICOH

1.

Make a few copies of OS-A3 chart using the 1 : 1 reproduction ratio and check that the vertical magnification is within specification. Vertical Magnification Specification: 1%

NOTE: * The distance "V" on the copy of the OS-A3 chart copy should be 100 1 mm (4 0.004"). 2. If Horizontal magnification is out of specification r adjust it using DIP SW 701-5, 6, 7, 8 (fine adjustment) and DIP SW 702-1, 2, 3, 4 (rough adjustment) on the optics board.

5-40-6

February 1, 1986

5-8. Others Master Clutch Lubrication (FT2050). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-42 SIider Drive Assembly Removal (FT2050) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-43 50Hz/60Hz Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-44 Master Clutch Lubrication (FT2070) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-45 Master Drive Assembly Replacement (FT2070) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-47 Toner Overflow Sensor Replacement (FT2070) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...5-48

5-41

August 1, 1985

Master Clutch Lubrication

1.
2.

Remove the slider clutch bracket. (See "Slider Clutch Removal" section.) Remove the 2 allen set screws from the master clutch. Rotate the output hub counterclockwise and remove.

3.

NOTE: * Do not pull the hub straight out or else damage to the spring may occur. 4. 5. Remove the master clutch sleeve. Rotate the clutch spring counterclockwise and remove. Apply Mobil Temp 78 to the clutch. Re-install the clutch so that the radial end of the spring and the smooth side of the clutch sleeve are facing the pulse generator gear. Position a 0.2 mm (0.008") thickness gauge in between the pulse generator gear and bushing. Push the master clutch towards the pulse generator gear. Tighten both allen set screws.

r

6. 7.

8.

9.

August 1, 1985

Slider Drive Assembly Removal

1.
2.

Remove the Slider. section.)

(See "Slider Removal"

Remove the pulse generator sensor bracket (1 screw and 1 connector). Open the clamshell and remove the master unit. (See''Erase Lamp Replacement" section.) . Remove the slider drive assembly (3 screws, 5 connectors).

3.

4.

NOTE: * When re-installing the slider drive assembly, set the positioning ring so it contacts the drive relay gear collar. Slider Drive Assembly Positioning When re-installing the slider drive assembly, the following positioning is necessary. 1. 2. Place the positioning ring (part number 52169003) on the pulse generator shaft. Apply pressure to the slider drive assembly forcing it in the direction of the main motor, then tighten the screws. (This is to make sure that the drive relay gear collar and the positioning ring are firmly in contact.)
5-43

August 1, 1985

50Hz/60Hz Conversion 1. Remove the 2 clamshell stopper screws and stand the clamshell straight up. (See "Transport Belt Replacement" section.) Remove the main motor gear ( part 52165860: 50Hz or 52165861: 60 Hz) allen set screw) and set according to desired electrical frequency as shown to . right. no. (1 the the

2.

5-44

February 1, 1986

Master Clutch Lubrication (FT2070)

1.
2. 3.

4. 5. 6.

Remove the harness from the harness clamp. Remove the pulse generator sensor connector. Remove the timing belt tensioner (1 screw) and the timing belt. Remove the master/development drive pulley (1 E-ring). Remove the master clutch bracket (2 screws). Remove the 2 Allen set screws from the master clutch. Rotate the output hub counterclockwise and

7.

8. 9.

10.

5-45

February 1, 1986

11.
12.

Remove the master clutch sleeve. Rotate the clutch spring counterclockwise and remove. Apply Mobil Temp 78 to the clutch. Re-install the clutch so that the radial end of the spring and the smooth side of the clutch sleeve are facing the pulse generator gear. . Position a 0.2 mm (0.008") thickness gauge between the pulse generator gear and bushing. Push the master clutch towards the pulse generator gear. Tighten both Allen set screws.

13. 14.

15.

16.

5-46

February 1, 1986

Master Drive Assembly Replacement (FT2070) Master Drive Assembly Removal

1. Remove the upper rear cover.
2. Open the clamshell and remove the master unit. (See "Erase Lamp Replacement" section.) Remove the optics board (2 screws and . 6 connectors). (See "Master Clutch Lubrication" section.)

8. Apply pressure to the slider drive assembly forcing it in the direction of the main motor, then tighten the screws. This is-to make sure that the drive relay gear collar and the positioning ring firmly in contact.

3.

4. 5.

Remove the harness from the harness clamp. Remove the pulse generator sensor assembly (1 screw and 1 connector).

6.

Remove the master drive assembly

(2 screws

and 1 connector). Master Drive Assembly Positioning When reinstalling the master drive assembly, the following procedure is necessary: 7. Place the positioning ring (part number 52169003) on the pulse generator shaft.

5-47

February 1, 1986

Toner Overflow Sensor Replacement (FT2070) NOTE: * Make sure that the copier is in the full size mode (1 : 1 ) before starting the following procedure.

1.
2.

Remove the upper left cover and the upper rear cover. Remove the cooling fan (3 screws and