Canon NP6045 Service Handbook

REVISION 1

MAR. 1997

FY8-23AN-010

Printed in Japan

Imprimé au Japon

Use of this manual should be strictly supervised to avoid disclosure of confidential information.

IMPORTANT

THIS DOCUMENTATION IS PUBLISHED BY CANON INC., JAPAN, TO SERVE AS A SOURCE OF REFERENCE FOR WORK IN THE FIELD.

SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER PRINTED MATTER.

ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE DIRECTED TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.

THIS DOCUMENTATION IS INTENDED FOR ALL SALES AREAS, AND MAY CONTAIN INFORMATION NOT APPLICABLE TO CERTAIN AREAS.

Prepared by

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPT.1

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIV.

CANON INC.

30-2, Shimomaruko 3-chome, Ohta-ku, Tokyo 146 Japan

CHAPTER 1 MAINTENANCE AND INSPECTION

A. Image Adjustment Basic

Procedure....................................1-1

B. Points to Note for

Scheduled Servicing ....................1-2

CHAPTER 2 STANDARDS AND ADJUSTMENTS

A. Image Adjustment ........................2-1

1. Adjusting the Leading Edge

Margin .....................................2-1

2. Adjusting the Leading Edge Non-Image Width

(registration)............................2-1

3. Adjusting the Left/Right Registration (paper deck and

cassette position)....................2-1

4. Adjusting the Left/Right Registration (holding tray position; 2nd side of

a two-sided/overlay copy) .......2-3

5. Adjusting the Left/Right

Margin .....................................2-4

6. AE Auto Adjustment................2-4

7. Adjusting the AE Slope...........2-5

B. Exposure System.........................2-6

1. Adjusting the Scanner Home

Position ...................................2-6

2. Routing the Scanner Drive

Cable.......................................2-7

3. Adjusting the Tension of

the Scanner Cable ..................2-8

Adjusting the Mirror Position

.....2-8

5. Cleaning the Mirror

(No. 5 mirror)...........................2-9

Installing the Light-Blocking Belts

...2-9

7. Installing the Lens X Direction

Drive Belt...............................2-10

Image Formation System

.............2-11

1. Routing the Grid for the Primary

Charging Assembly...............2-11

2. Adjusting the Height of

the Charging Wire.................2-13

3. Adjusting the Blank Exposure

Lamp .....................................2-14

Position of the Roller Electrode

..2-15

5. Position of the Side Seal in

the Cleaning Assembly .........2-15

6. Cleaning the Cleaner Side

Scraper..................................2-15

D. Pick-Up/Feeding System............2-17

1. Orientation of the Pick-Up Roller

(cassette/deck)......................2-17

2. Orientation of the Separation

Roller (cassette/deck) ...........2-18

3. Orientation of the Feeding Roller

(cassette/deck)......................2-18

4. Orientation of the Pick-Up Roller

(multifeeder)..........................2-19

5. Orientation of the Feeding Roller

(multifeeder)..........................2-20

6. Adjusting the Pressure of the Separation Roller

(cassette/deck)......................2-20

7. Adjusting the Pressure of the Separation Roller

(holding tray).........................2-21

8. Adjusting the Pressure of the Pick-Up/Feeding Roller

(multifeeder)..........................2-21

9. Positioning the Pick-Up Roller Releasing Solenoid

(cassette) ..............................2-22

10.Adjusting the Position of the Pick-Up Roller Releasing

Solenoid (deck).....................2-22

11.Adjusting the Pick-Up Roller Releasing Solenoid

(multifeeder)..........................2-23

12.Routing the Timing Belt for the Multifeeder Assembly

Side Guide ............................2-23

13.Adjusting the Position of the

]4]).................2-49

CHAPTER 4 SERVICE MODE

A. Outline..........................................4-1

B. Using Service Mode.....................4-1

C. Using Adjustment Mode and Option

Settings Mode ..............................4-2

D. Control Display Mode

( ) ........................................4-3

E. I/O Display Mode ( ) ........4-14

F. Adjustment Mode ( )........4-50

G. Function Mode ( )............4-58

H. Options Mode ( )..............4-63

I. Counter Mode ( ).............4-70

]

A. Sensors........................................3-2

B. Switches and Solenoids...............3-6

C. Motors and Fans........................3-10

D. Clutches.....................................3-12

E. Lamps, Heaters, and

Photosensors .............................3-14

F. PCBs..........................................3-16

G. Variable Resistors, Light-

Emitting Diodes, and Check

Pins by PCB...............................3-18

1. DC Controls PCB..................3-18

2. AC Driver PCB......................3-21

3. DC Power Supply PCB.........3-21

4. Control CPU PCB .................3-22

5. Holding Tray Driver PCB.......3-23

6. Potential Measurement PCB.3-24

7. HVT1 PCB.............................3-25

8. HVT2 PCB.............................3-26

9. Inverter PCB..........................3-26

10.Lamp Regulator PCB............3-27

11.Counter PCB.........................3-27

Delivery Paper Deflecting Drive

Solenoid ................................2-24

14.Adjusting the Position of the Holding Tray Paper Deflecting

Plate Drive Solenoid .............2-24

15.Installing the Holding Tray Assembly Side Guide

Assembly...............................2-25

16.Installing the Holding Tray Paper

Jogging Guide Assembly ......2-25

17.Installing the Timing Belt for the Holding Tray Assembly Paper

Jogging Guide Plate..............2-26

18.Adjusting the Position of the Holding Tray Paper Jogging

Solenoid ................................2-26

19.Installing the Drive Belt .........2-27

E. Fixing System.............................2-28

1. Points to Note When Handling

the Fixing Heater...................2-28

2. Position of the Fixing Assembly

Paper Guide..........................2-28

3. Adjusting the Pressure of the

Lower Roller (nip)..................2-29

4. Adjusting the Fixing Clutch ...2-30

F. Electrical System........................2-31

1. When Replacing the DC

Controller PCB......................2-31

2. Checking the Surface Potential

Control System......................2-31

3. Checking the Potential Control

System ..................................2-35

4. Potential Control System

Conversion Table ..................2-37

5. Checking the Environment

Sensor...................................2-42

Checking the Photointerrupters

....2-42

7. Registering the Cassette/ Multifeeder Paper Width Basic Value (

CHAPTER 3 ARRANGEMENT AND FUNCTIONS OF THE ELECTRICAL PARTS

CHAPTER 5 SELF DIAGNOSIS

A. Copier...........................................5-1

B. RDF Self Diagnosis ......................5-6

APPENDIX

A. GENERAL TIMING CHART.........A-1

SIGNALS AND ABBREVIATIONS C. GENERAL CIRCUIT DIAGRAM ..A-5 D. RDF-H1 GENERAL CIRCUIT

DIAGRAM....................................A-7

....A-2

C. Sorter Self Diagnosis ...................5-7

E. SPECIFICATIONS.......................A-9

1. Type........................................A-9

2. System....................................A-9

3. Performance .........................A-10

4. Others...................................A-13

iii

1-1

CHAPTER 1 MAINTENANCE AND INSPECTION

A. Image Adjustment Basic Procedure

Make adjustments in non-AE and at copy density 5.

Is there a difference

in density between

front and rear?

Is it lighter

at the rear?

Make two to three copies of the Test Sheet.

Check the height of the charging wire.

Turn OFF and then ON the power switch, and make a copy.

If the difference still exists after turning either screw 1.5 mm (a full turn results in a change of 0.7 mm), check the charging assembly and the scanning lamp/scanner for dirt. When turning it counterclockwise, be sure that the height of the wire is not less than 7.5 mm.

Check the copy paper and the transfer system.

Is the density

of gray scale No. 1

too light?

Clean the standard white plate, mirror, lens, dust-proofing glass, scanning lamp, and reflecting plate/heat absorbing glass.

Turn OFF and then ON the power switch, and make a copy.

Is VDM VDT

±10 V?

Is PLMT '1'?

Is VL1M VL1T

±10 V?

Is LLMT '1'?

Check the potential control system; if normal, replace the photosensitive drum.

Check the scanning lamp and the potential control system; if normal, replace the photosensitive drum.

Increase the value of VDT-SW.

Turn OFF and ON the power switch, and make a copy.

Increase the value of LIGHT_5.

Decrease the value of LIGHT_5.

Is the density of

gray scale No. 10

optimum?

Is the density of

gray scale No. 10

too dark?

Perform AE adjustment. (Refer to P. 2-4)

Making Pre-Checks

Adjusting the Density Slope

Adjusting the Solid Black Density

YES

✽

✽ 1 ✽

✽3✽

Clean the charging wire.

Make a copy.

Note 1:

Note 2:

Turn the adjusting screw at the rear of the primary charging assembly clockwise and the adjusting screw at the front counterclockwise for the same degree. (1.5 mm max. on either screw)

Turn the adjusting screw at the rear of the primary charging assembly counterclockwise and the adjusting screw at the front clockwise for the same degree. (1.5 mm max. on either screw)

B. Points to Note for Scheduled Servicing

Cleaning

Part Tool/solvent

Work/remarks

Manual feed tray, Pick-up roller, Feeding roller

Vertical path roller

Alcohol and lint-free paper

Cleaning

Part Tool/solvent

Work/remarks

Pre-exposure lamp

Primary charging assembly, Transfer/separation assembly, Pretransfer assembly

Primary charging anti-stray sheet

Dust-proofing glass Blank exposure

lamp

No. 4 mirror to No. 6 mirror

Roller electrode

Developing assembly base

Registration roller

Moist cloth (Note 1)

Alcohol and lint-free paper

Lint-free paper

Blower brush or lintfree paper

Alcohol and lint-free paper

Cleaning

Dry wiping; then, cleaning with lint-fee paper moistened with alcohol

Cleaning

Cleaning Cleaning with a blower brush;

cleaning with lint-free paper if dirt is excessive; use the mirror cleaning tool for the No. 5 mirror

Disposing of the toner collecting on the roller electrode

Cleaning

Note: Do not leave any droplets of water.

Copyboard glass

Part Tool/solvent

Work/remarks

Cleaning

Alcohol Lens Standard white plate Reflecting plate

Blower brush

Lint-free paper

Blower brush

Cleaning Dry wiping, cleaning Cleaning

No. 1 mirror through No. 3 mirror

Blower brush or lint-

free paper

Cleaning with a blower brush; using lint-free paper if dirt is excessive

Part Tool/solvent

Work/remarks

Separation claw

Upper roller, Lower roller

Feeding assembly Re-pick up assembly,

Reversing roller Re-pick up assembly,

Pick-up roller, Registration roller

Solvent and lint-free

paper

Cleaning oil and lint-

free paper

Moist cloth (Note 1)

Alcohol and lint-free

paper

Paper guide

Solvent and lint-free

paper

Alcohol and lint-free

paper

Cleaning

Developing antistray sheet

Note:

• Make thorough checks to be sure that the block (front, rear) is free of melting, thermal deformation, cracking, and yellowing because of leakage. If an abnormal condition is noted, replace it with a new part without delay.

• Inspect and clean both outside and inside of the block (front, rear).

• Do NOT use a cloth coated with metal powder.

• Do NOT use a moist cloth. Dry wipe with lint-free paper, and use alcohol. Make sure that the part is completely dry before installing it.

• Be sure to complete scheduled servicing and replacement within a specific period of time.

1-2

CHAPTER 2 STANDARDS AND ADJUSTMENTS

A. Image Adjustment

1. Adjusting the Leading Edge Margin

Select ‘LE_BLANK’ in service mode ( ). Make adjustments so that the leading edge non-image width is 4.5±1.5 mm when the

Test Sheet is copied in Direct.

(unit: 0.1 mm)

Figure 2-1

2. Adjusting the Leading Edge Non-Image Width (registration)

Select ‘REGIST’ in service mode ( ). Make adjustments so that the leading edge margin is 4.5±1.5 mm when the Test

Sheet is copied.

(unit: REGIST:0.1mm)

Figure 2-2

3. Adjusting the Left/Right Registration (paper deck and cassette position)

Make adjustments by moving the horizontal adjusting plate of the paper deck and each cassette so that the distance between the edge of the copy image and that of the copy paper is 0 ±1.5 mm when the Test Sheet is copied.

Figure 2-3

0±1.5mm

0 2

4 6

(+)(-)

4.5±1.5mm

]

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-1

4.5±1.5mm

Adjusting plate

Screw

Adjusting plate

Screw

CHAPTER 2 STANDARDS AND ADJUSTMENTS

a. Paper Deck

Figure 2-4a

2-2

Figure 2-4b

b. Cassette

0±2.0mm

0 2

4 6

(+)(-)

Screw

Adjusting Plate

CHAPTER 2 STANDARDS AND ADJUSTMENTS

Figure 2-5

Note:

If you have adjusted the front/rear registration for the cassette, you will have to register the paper width basic value. (p. 2-49)

4. Adjusting the Left/Right Registration (holding tray position; 2nd side of a twosided/overlay copy)

Loosen the two screws, and move the position of the guide plate of the holding tray assembly so that the distance between the edge of the copy image and that of the copy paper is 0 ±2.0 mm in Direct mode.

Figure 2-6

2-3

← (]: START) (0: F5, 1: F9) in service mode ( ).

4) Place the Test Sheet on the copyboard, and close the copyboard cover.

Figure 2-7

5) Press the

]

user mode key once.

The scanning lamp will turn ON, and auto adjustment will be executed. AE_ADJ : 1 ← (]:START)

Changes to ‘1’.

NA-3 Test Sheet

Butted.

]

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-4

5. Adjusting the Left/Right Margin

Make adjustments so that the image left/right margin is 2.75 ±2.5 mm when the Test

Sheet is copied in Direct mode.

You must have adjusted the “left/right registration” before making this adjustment.

a. Front Margin Adjustment (left margin)

Select ‘F-BLANK’ in service mode ( ), and change the setting. Increasing the setting increases the front margin. (unit: 0.1 mm)

b. Rear Margin (right margin)

Select ‘R-BLANK’ in service mode ( ), and change the setting. Increasing the setting increases the rear margin. (unit: 0.1 mm)

6. AE Auto Adjustment

1) Open the front door, and insert the door switch actuator into the door switch assembly.

2) Push the service mode switch with a clip or the like over the cover.

3) Select AE_ADJ: 0

q If the setting was decreased in adjustment mode, the copy of a newspaper will be

lighter.

w If the setting was increased in adjustment mode, the copy of a newspaper will be

darker.

Note:

You can make copies by pressing the Copy Start key.

6) Press the Reset key twice to end service mode.

]

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-5

6) Place a newspaper on the copyboard, and close the copyboard cover.

7) Press the

user mode key once.

]

The scanning lamp will turn ON, and auto adjustment will be executed. AE_ADJ : 0 ← (]:START)

Changes to ‘0’.

8) Press the Reset key twice to end service mode.

7. Adjusting the AE Slope

After executing AE auto adjustment, make a copy of a dark original (e.g.,

newspaper). If the copy is foggy or too light, perform the following:

1) Open the front door, and insert the door switch actuator into the door switch assembly.

2) Press the service mode switch over the cover with a clip.

3) Select ‘AE_SLOP’ in service mode ( ).

4) Place a dark original (e.g., newspaper).

5) Change the setting using the keypad, and press the ] user mode key.

A is within section B.

Figure 2-8

No. 1 mirror mount

Electrode mount (front)

A (left) of wall

Glass support

(front)

Hole

]

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-6

B. Exposure System

1. Adjusting the Scanner Home Position

Make copies, and remove the control panel; then, check to make sure that the line in section A on the electrode (front) of the No. 1 mirror mount is within section B of the hole in the glass support (front).

Otherwise, change the setting of ‘BRAKE_SC’ in service mode ( ) so that the line in section

Steel ball

Wind eight times.

Fix in place temporaily.

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2. Routing the Scanner Drive Cable

Route the cable as indicated by numbers q through i, and perform “adjusting the

wire tension” and “adjusting the mirror position” shown on the next page.

Figure 2-9

2-7

10 mm

(rear)

(front)

Mirror mount

CHAPTER 2 STANDARDS AND ADJUSTMENTS

3. Adjusting the Tension of the Scanner Cable

Be sure to perform the following whenever you have installed the scanner cable.

1) Remove the two mounting screws, and remove the left cover.

2) Loosen the fixing screw on the tension spring bracket.

3) Turn the tension adjusting screw so that the value is as indicated:

• Turn the tension adjusting screw A so that the reading of the spring gauge is 200 ±50 g when the middle of the scanner cable is pulled about 10 mm.

Figure 2-10

4. Adjusting the Mirror Position

1. Routing the Scanner Drive Cable and Adjusting the Mirror Position Be sure to perform the following whenever you have installed the scanner drive wire:

1) Move the No. 1 mirror mount and the No. 2/No. 3 mirror mount to the left.

2) Set the mirror positioning tool (front, rear; FY9-3011) as shown:

Figure 2-11

Figure 2-12

2-8

CHAPTER 2 STANDARDS AND ADJUSTMENTS

5. Cleaning the Mirror (No. 5 mirror)

1) Remove the copyboard glass.

2) Remove the lens hood.

3) Remove the mirror guide plate.

4) Move the lens stage in Enlarge direction.

5) Remove the screw, and remove the mirror cleaning tool.

6) As shown, butt the mirror cleaning tool q against the No. 5 mirror, and clean the mirror by moving the tool in the direction of the arrows. (At this time, take care so that the No. 4 mirror will not come into contact with the cleaning tool or your fingers.)

Figure 2-13

6. Installing the Light-Blocking Belts

q Light-blocking belt 1 e Light-blocking belt 3 w Light-blocking belt 2 r Light-blocking belt 4

Figure 2-14

2-9

Own weight

CHAPTER 2 STANDARDS AND ADJUSTMENTS

7. Installing the Lens X Direction Drive Belt

Install the lens X direction drive belt with a mounting screw w where the lens X

direction drive motor q has lowered on its own weight.

Figure 2-15

2-10

Screw

Screws

CHAPTER 2 STANDARDS AND ADJUSTMENTS

C. Image Formation System

1. Routing the Grid for the Primary Charging Assembly

1) Loosen the two mounting screws used to fix the left/right shielding plate in place.

2) Loosen the three mounting screws used to fix the motor unit in place at the front.

Figure 2-16

3) Loosen the mounting screw, and move it in the direction shown in Figure 2-17; then, fix it temporarily.

Figure 2-17

4) Free a length of about 5 cm from a 0.1mm-dia. charging wire reel, and form a loop of about 2 mm in diameter.

Reference:

When forming a loop, wind the charging wire around a hex key once, and twist the hex key three to four times; then, twist the charging wire.

2-11

Stud A

Screw

CHAPTER 2 STANDARDS AND ADJUSTMENTS

5) Cut the twisted wire (excess wire) by a nipper.

6) Hook the loop on stud A shown in Figure 2-18.

7) When you have routed the wire for 31 runs, lead it through section B, give it a half turn, and put it between the washer and the motor unit; then, wind it about once (clockwise) around the mounting screw, and tighten the mounting screw.

Figure 2-18

8) Cut the excess charging wire with a nipper.

9) Tighten the mounting screw you loosened in step 3). Keep tightening the screw until the tension of the grid wire is even. Pay attention so that the charging assembly is not deformed; try to tighten the mounting screw (front) on the left/right shielding plate as early as possible.

2-12

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-13

2. Adjusting the Height of the Charging Wire

Table 2-1

Reference:

The height (position) of the primary and transfer/separation charging wire may be adjusted by turning the screw behind the charging assembly . A full turn of the screw changes the position of the charging wire by about 0.7 mm.

Charging assembly

Primary

Pre-transfer

Transfer

Separation

Height of charging wire

7.5+1.5

-0mm

7.5+1.5

-0mm

9.5+1.0

-0mm

10.2±0.5mm

A:16.2±0.5mm B:14.9±0.5mm

Range

±1mm

No adjusting mechanism

±2mm

Adjusting screw

0 2

4 6 8

0 2

3 6 8

W1 W1

CHAPTER 2 STANDARDS AND ADJUSTMENTS

3. Adjusting the Blank Exposure Lamp

1) Place the Test Sheet on the copyboard.

2) Select A4.

3) Make a copy, and check to make sure that the left/right registration is correct.

4) Make a copy in Direct.

5) Check the image, and measure the non-image width shown in Figure 2-19.

Paper size

All paper sizes

Left/right non-image width

2.75±2.5mm

(with standard frame erasing ON)

Table 2-2

Figure 2-19

6) If the non-image width is not as specified, turn the adjusting screw to adjust the position of the blank exposure lamp assembly.

2-14

Figure 2-20

Reference attachment

Side seal

Roller electrode

Scraper

CHAPTER 2 STANDARDS AND ADJUSTMENTS

4. Position of the Roller Electrode

Figure 2-21

5. Position of the Side Seal in the Cleaning Assembly

Be sure that the side seal does not extend inside the cleaner housing.

Figure 2-22

6. Cleaning the Cleaner Side Scraper

Perform the following when replacing the side scraper and, thereafter, for every

500,000 copies made.

1) Remove the cleaning blade.

2) Remove paper lint collecting at the tip of the side scraper (between the magnet roller and the toner guide roller; A) with tweezers.

2-15

Toner guide roller

4~8mm

Side scraper (front)

Magnet roller

Remove waste toner.

(front)

30~40mm

Toner guide roller

4~8mm

Side scraper (rear)

Magnet roller

Remove waste toner.

(rear)

30~40mm

CHAPTER 2 STANDARDS AND ADJUSTMENTS

3) Remove the coating of toner from the surface of the magnet roller. (Use a sheet of copy paper shaping it like the letter U.)

Figure 2-23

Figure 2-24

4) Turn the magnet roller clockwise (viewing from the front).

5) If a coating of toner develops again where toner was removed in step 3), repeat steps 3) through 5).

2-16

Direction of rotation

Collar (silver)

Rear (copier)

Direction of rotation

Collar (gold)

Front (copier)

CHAPTER 2 STANDARDS AND ADJUSTMENTS

D. Pick-Up/Feeding System

1. Orientation of the Pick-Up Roller (cassette/deck)

Install the pick-up roller by reversing the steps used to remove it with the following in

mind:

• The front and rear pick-up rollers are not interchangeable.

• The collar of the front pick-up roller is gold. When installing the pick-up roller q to the pick-up assembly, make sure that the round marking w on the side of the roller and the round marking e on the collar (gold) are toward the front of the machine.

Figure 2-25

• The collar of the rear pick-up roller is silver. When installing the pick-up roller r to the pick-up assembly, make sure that the round marking t on the collar (silver) is toward the rear of the machine.

Figure 2-25a

2-17

Front (copier)

Wider groove

Narrower groove

(front of copier)

(rear of copier)

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2. Orientation of the Separation Roller (cassette/deck)

Keep the following in mind when replacing the separation roller.

Figure 2-26

3. Orientation of the Feeding Roller (cassette/deck)

When installing the feeding roller assembly q to the cassette/deck pick-up

assembly, make sure that the belt pulley w is toward the front of the machine.

When installing the feeding roller e to the feeding roller shaft r, make sure that the

marking ‘5’ t is toward the front of the machine.

Figure 2-27

2-18

4. Orientation of the Pick-Up Roller (multifeeder)

Install the pick-up roller by reversing the steps used to remove it with the following in

mind:

• The front and rear pick-up rollers are not interchangeable.

• The collar of the front pick-up roller is silver. When installing the pick-up roller q to the pick-up assembly, make sure that the round marking w is toward the front of the machine.

q Pick-up roller w Marking (collar)

Figure 2-28

• The collar of the rear pick-up roller is gold. When installing the pick-up roller e to the pick-up assembly, make sure that the

round marking r on the side of the roller and the round marking t on the collar (gold) are toward the rear of the machine.

e Pick-up roller r Marking (roller) t Marking (collar)

Figure 2-28a

Direction of rotation

Collar (gold)

Copier

Direction of rotation

Collar (silver) Front (copier)

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-19

(front)

CHAPTER 2 STANDARDS AND ADJUSTMENTS

5. Orientation of the Feeding Roller (multifeeder)

When installing the pick-up roller q to the multifeeder pick-up assembly, make sure

that the belt pulley w and the marking ‘5’ e are toward the front of the machine.

Figure 2-29

6. Adjusting the Pressure of the Separation Roller (cassette/deck)

If double feeding or pick-up failure occurs during pick-up operation, change the

position of the pressure spring of the separation roller:

• If double feeding occurs, change the position of the spring hook to side B.

• If pick-up failure occurs, change the position of the spring hook to side A.

2-20

q Feeding roller e Locking lever w Separation roller r Pressure spring

Figure 2-30

B A

32.7±0.1mm

CHAPTER 2 STANDARDS AND ADJUSTMENTS

7. Adjusting the Pressure of the Separation Roller (holding tray)

Turn the separation adjusting roller so that the distance between the shafts are 32.7

±0.1 mm.

Figure 2-31

8. Adjusting the Pressure of the Pick-Up/Feeding Roller (multifeeder)

When pick-up double feeding or pick-up failure occurs during pick-up operation,

adjust the position of the pressure spring of the separation roller.

• If double feeding occurs, change the position of the spring hook to side A.

• If pick-up failure occurs, change the position of the spring hook to side B.

Figure 2-32

2-21

57.2±0.5mm 36±0.5

CHAPTER 2 STANDARDS AND ADJUSTMENTS

9. Positioning the Pick-Up Roller Releasing Solenoid (cassette)

Make adjustments so that the distance from the bottom of the pick-up unit in each cassette holder to the bottom end of the bushing of the roller support A is 36 ±0.5 mm when the plunger of the pick-up releasing roller is drawn as shown.

Figure 2-33

10.Adjusting the Position of the Pick-Up Roller Releasing Solenoid (deck)

Adjust the position of the solenoid so that the distance from the center of the hole A in the solenoid to the left end of the right solenoid arm is 57.2 ±0.5 mm as shown in Figure 2-34.

Figure 2-34

2-22

+ 154 hidden pages

Canon NP6045 Service Handbook

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

A. Image Adjustment Basic Procedure

B. Points to Note for Scheduled Servicing

A. Image Adjustment

B. Exposure System

C. Image Formation System

D. Pick-Up/Feeding System