Canon NP6621 Service Manual

SERVICE MANUAL

REVISION 0

FEB. 1998

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FY8-13F4-000

IMPORTANT

THE INFORMATION CONTAINED HEREIN IS PUBLISHED BY CANON, INC., JAPAN, AND IS FOR REFERENCE USE ONLY. 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.

Printed in Japan

Imprimé au Japon

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

Prepared by

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION

CANON INC.

5-1, Hakusan 7-chome, Toride-shi Ibaraki, 302-0023 Japan

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Introduction

This Service Manual provides basic facts and figures you will need to service the plain paper copier

NP6621 in the field.

The NP6621 is designed to enable automated copying work and may be configured with the following accessory; for servicing information on the sorter, ADF, and control card, see their respective Service Manuals:

1. Cassette Feeding Module-B2

2. Cassette Feeding Module-A2

3. Cassette Feeding Unit-K1

4. Paper Deck Pedestal-K1

5. Control Card IV N

6. ADF-E1

7. RDF-F1

8. Stapler Sorter-D1

9. Sorter 10-B1

10. Remote Diagnostic Device II

This Service Manual contains descriptions on the 1-Cassette Feeding Unit-B1 and the 2-Cassette Feeding Unit-A2.

Note:

The Cassette Feeding Unit-B2, the Cassette Feeding Unit-A2 the cassette feeding Unit K1, the Paper Deck Pedestal-K1 and Remote Diagnostic Device II may not be available for sale in some areas.

This Service Manual is organized as follows:

CHAPTER 1, “General Introduction,” explains the NP6621’s features, specifications, and step-by-step instructions on how to operate the copier.

CHAPTER 2, “Copying Processes,” shows how the NP6621 generates copies while discussing each of the steps involved.

CHAPTER 3, “Operations and Timing,” explains the NP6621’s mechanical system by function and principles behind its electrical system in relation to timing of each operation.

CHAPTER 4, “Mechanical System,” provides instructions on how to disassemble/assemble and adjust the NP6621.

CHAPTER 5, “Installation,” provides points to note when selecting the site of installation and instructions on how to install the NP6621.

CHAPTER 6, ‘Maintenance and Inspection,” gives tables of periodically replaced parts and consumables/ durables as well as a scheduled servicing chart.

APPENDIX contains a general timing chart, general circuit diagrams, and PCB diagrams.

This Service Manual is accompanied by the Service Handbook, which provides information on how to maintain and inspect the NP6621 through adjustment and troubleshooting work.

Information found in this manual may be updated from time to time for product improvement, and major updates are communicated in the form of

All service persons are expected to be thoroughly familiar with this Service Manual, the Service Handbook, and Service Information bulletins and be ready to respond to the needs of the user.

Service Information

bulletins.

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i

Introduction

RDF-F1 (Recirculating Document Feeder)

Automatically feeds a set of up to 100 originals to the platen glass for copying. The RDF can also turn over two-sided originals for automatic two-sided copying.

MS-B1 (10 bins)

Automotically sorts and groups sets of up to 10 copies.

ADF-E1 (Automatic Document Feeder)

Automatically feeds sets of up to 30 originals to the copyboard for copying.

Control Card IV N

Allows you to monitor the number of copies made by each card holder.

Stapler Sorter-D2 (10 bins)

Automatically sorts or groups copies into 10 bins at (30 pages per set). Staples sets of up to 20 copies each.

Cassette Feeding Module-B2

Allows you to increase your paper supply through the addition of one paper cassette.

Cassette Feeding Module-A2

Allows you to increase your paper supply through the addition of two paper cassettes.

Cassette Feeding Unit-K1

Allows you to increase your paper supply through the addition of three paper cassettes.

ii

Paper Deck Pedestal-K1

Holds up to 1500 sheets of one type of paper.

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CHAPTER 1

GENERAL DESCRIPTION

I. FEATURES ................................................ 1-1

II. SPECIFICATIONS.....................................1-2

A. Copier ..................................................1-2

B. Cassette Feeding Module-B2/

Cassette Feeding Module-A2/Cassette

Feeding Unit-K1 ..................................1-5

C. Paper Deck Pedestal-K1..................... 1-6

III. NAMES OF PARTS................................... 1-7

A. Exterior ................................................1-7

B. Cross Section ...................................... 1-8

IV. BASIC OPERATION................................1-13

A. Control Panel.....................................1-13

B. Making Copies...................................1-16

C. Using the Stack Bypass .................... 1-17

D. User Mode......................................... 1-19

V. WARNINGS AND ACTIONS ...................1-26

A. Jam Indicator .....................................1-26

B. Cleaning the Static Charge

Eliminator...........................................1-33

VI. ROUTINE CLEANING .............................1-34

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GENERAL DESCRIPTION

I. FEATURES

When fitted with options, it provides a maximum of four paper sources.

1. Multiple front loading and multifeeder for space saving.

• The cassette may be slid out to the front for paper supply work.

• With the adjustable cassette and the multifeeder, various types of paper may be used.

2. Office conveniences and ecology.

• The copier is designed compact, enabling effective use of office space.

• The use of roller charging has proved to reduce the generation of ozone significantly.(1/100 to 1/1000 compared to other Canon copiers)

• As the pick-up mechanism, center-reference is adopted in consideration of the use of recycled paper.

• A significant number of parts are made of plastic in an effort to promote recycling.

• The copier is designed as a clamshell type to facilitate clearing of jammed paper.

3. Dependable high image quality.

• The new HQ (high-quality) toner ensures faithful reproduction of solid black, text, and photos.

• In addition to Canon’s own single-component toner projection development method, the use of auto image control (AIC) ensures stable reproduction of images.

4. Practical basic features.

• As many as 21 copies (A4/Letter, horizontal) may be made per minute.

• Copies may be as large as A3/11×17 or as small as A5/STMT, accommodating postcards.

• The AE mechanism promises enhanced reproduction of newspapers or diazo originals.

• Using page separation mode, a book may be copies with its lift and right pages processed separately.

• Copies may be made in zoom between 49% and 204%.

• The zoom fine-adjustment mechanism ensures better control for faithful reproduction of originals.

• The auto energy saver mechanism helps further saving of energy.

• The interrupt mechanism enables cutting in on a continuous copying session.

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1–1

GENERAL DESCRIPTION

II. SPECIFICATIONS

A. Copier

1. Configuration

Item

Body

Copyboard

Light source

Lens

Photosensitive medium

2. Type

Item

Copying

Charging

Exposure

Specifications

Desktop

Fixed

Halogen lamp

Zoom lens

OPC

Specifications

Indirect electrostatic photography

Roller (direct charging)

Slit (moving light source)

Copy density adjustment

Development

Automatic

Pick-up

Manual

Transfer

Separation

Cleaning

Fixing

Automatic (AE) or manual

Dry (toner projection)

2 cassettes

Multifeeder

Roller

Curvature + static eliminator

Cleaning blade

Heat roller, 900W

1–2

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3. Performance

GENERAL DESCRIPTION

Item Original type Maximum original size Reproduction ratio

Wait time First copy time Continuous copying

Copying speed Copy size

Cassette

Manual

Specifications Sheet, book, 3-D object (2 kg/2.204 lb. max.) A3 (297 x 420 mm) DIRECT, 2R2E (Table 1-1);

zoom between 49% and 204% (fine zooming provided) 30 sec

9.7 sec (approx.; A4, DIRECT, non-AE, cassette 1) 100 copies (max.; upper limit may be changed in service

mode) See Table 1-202. Cassette: A3 to A5

Manual: A3 to postcard

2

Plain paper (64g to 80 g/m recycled paper (64 to 80 g/m

), tracing paper*1, colored paper*1,

2

), eco paper (80 g/m2)

Plain paper (64 to 80 g/m2), tracing paper*1, colored paper*1, recycled paper (64 to 80 g/m2), eco paper (80 g/m

*3

parency

, postcard, label sheet*1, Thick paper (81 to 128 g/m2)

2 *1

), trans-

Copy paper type

Two-sided/overlay copying

*2

Cassette

Multifeeder

Copy tray Non-image width One-sided

Multifeeder

Auto clear

Auto power-off

Options

Plain paper (64 to 80 g/m2), colored paper, postcard, recycled paper (64 to 80 g/m2), eco paper (80 g/m2)

2

34 mm deep (approx.; about 250 sheets of 80 g/m

); no claw,

front loading (center reference) 5 mm (max. stacking height; i.e., about 50 sheets of 80 g/m2);

no claw (center reference) 100 sheets (approx.: A3, 80 g/m2)

2.0 ±1.0 mm (leading edge); 2.5 ±1.5 mm (left/right, trailing edge)

2.0 ±1.0 mm (leading edge); 3.5 ±1.5 mm (left/right, trailing edge) Provided (2 min standard; may be varied in 1-min increments

between 1 and 9 min; may be deactivated) Provided (5 min standard; 2, 5, 10, 15, 30, 60, or 120 min;

may be varied in user mode) Cassette Feeding Module-B2, Cassette Feeding Module-A2,

Cassette Feeding Unit-K1, Control Card IV N, Stapler SorterD2, Sorter 10-B1, ADF-E1, RDF-F1, Paper Deck PedestalK1, Remote Diagnostic Device II

*1 Canon recommended paper. *2 If in manual mode, remove curling before second feeding. *3 Fan out sheets before setting to eliminate adhesion.

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1–3

GENERAL DESCRIPTION

4. Others

Item

Temperature

Operating environment

Power supply

Power consumption

Noise

Ozone (avr over 8 hr)

Dimensions Depth

Humidity Atmospheric pressure

230 V (50Hz) Standby Continuous copying Copying Standby

Width

Specifications

7.5° to 32.5°C/45.5 to 90.5°F 5% to 85%

810.6 hPa to 10313.3 hPa (0.8 to 1 atm) Serial numbers QBSxxxxx, UDNxxxxx, SBExxxxx, TBHxxxxx, UDPxxxxx

0.042 kwh (reference only)

0.663 kwh (reference only) 66 dB or less (1m front) 40 dB or less (1m front)

0.02 ppm or less 585 mm 640 mm

By ISO sound power level measurement

Weight

Consumables

Reproduction ratio

Height

Copy paper Cartridge

DIRECT

REDUCE I REDUCE II ENLARGE I ENLARGE II ZOOM

Table 1-201 Defaults Reproduction Ratio

624 mm 77 kg/169.8 lb (approx.) Keep wrapped; store avoiding humidity. Avoid direct sunshine; store at 40°C/104°F, 85% or less.

1: 1 (±0.5%)

230V

1: 0.500 1: 0.707 1: 1.414 1: 2.000 49% to 204 % (1% increments)

1–4

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GENERAL DESCRIPTION

Reproduction ratio

DIRECT 1: 1 (±0.5%)

1: 0.500 (+1.0%)

REDUCE 1: 0.707 (+1.0%)

1: 2.000 (+1.0%)

ENLARGE 1: 1.414 (+1.0%)

Copy size

A3 (297 × 420) A4 (210 × 297) A5 (148 × 210) B4 (257 × 364) B5 (182 × 257) A4R (297 × 210) A5R (210 × 148) B5R (257 × 182) A3 → A5R A3 → A4R B4 → B5R A5R → A3 A4R → A3 B5R → B4

Table 1-202 Copying Speeds

Q’ty

11 21 21 12 21 16 18 18 20 15 17 12 12 14

Specifications subject to change without notice.

B. Cassette Feeding Module-B2/Cassette Feeding Module-A2/

Cassette Feeding Unit-K1

Copy paper type

Cassette specifications

Power supply

Dimensions (WxDxH; mm/in)

Weight

Same as copier.

Same as copier

34 VDC, 24 V, 5 V (supplied by copier)

Cassette Feeding Module-B2: 585 × 622 × 105/23.0 × 24.5 × 4.1 Cassette Feeding Module-A2: 585 × 622 × 210/23.0 × 24.5 × 8.3 Cassette Feeding Unit-KI: 585 × 622 × 384/23.0 × 24.5 × 15.1

Cassette Feeding Module-B2: 9 kg/19.8 lb Cassette Feeding Module-A2: 16 kg/32.3 lb Cassette Feeding Unit-KI: 29.6 kg/65.3 lb

Table 1-203

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1–5

GENERAL DESCRIPTION

C. Paper Deck Pedestal-K1

Method of pick-up

Loading method

Type of paper

Size of paper

Capacity Switching (size) Control panel

Display

Power supply

Weight

Dimensions (W × D × H; mm/in)

Clawless

Front loading

2

Plain paper (64 to 80 g/m

A4 (landscape), B5 (landscape), LTR (landscape)

162 mm high (one side; equivalent of 1500 sheets of 80 g/m2 paper) Partitioning plate (incremental) No (use copier' s control panel)

No (see copier' s display)

34 VDC, 24 V, 5 V (supplied by copier)

31.7 kg/70.0 lb

610 × 583 × 414/24.0 × 21.4 × 16.3

Table 1-204

), Colored paper*

1–6

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III. NAMES OF PARTS

GENERAL DESCRIPTION

A. Exterior

q Copyboard cover w Power switch e Multifeeder r Cassette

1

7

2

6

5

3

4

t Front door y Control panel u Copyboard glass

Figure 1-301

1

6

5

q Body open/close lever w Copy density correction volume e Static eliminator cleaner

Figure 1-302

2

3

4

r Static eliminator t Copy tray y Anti-condensation heater switch (rear)

Fluorescent heater switch (front)

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1–7

GENERAL DESCRIPTION

B. Cross Section

1. Cross Section of the Body

213

44

6 7

5

8 9

10

11

12

13

14

15 16 17

23

22

q No. 3 mirror w No. 2 mirror e No. 1 mirror r Scanning lamp t Fixing unit y Feeding assembly u Copyboard glass i Drum unit

1–8

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21 19 18

o Lens !0 Primary charging roller !1 Transfer roller !2 No. 6 mirror !3 Developing assembly !4 No. 4 mirror !5 No. 5 mirror

20

!7 Cassette 1 pick-up roller !8 Vertical path roller 2 !9 Vertical path roller 1 @0 Cassette 2 pick-up roller @1 Duplexing unit @2 Delivery paper deflecting plate @3 Delivery roller

!6 Multifeeder pick-up roller

Figure 1-303

2. Cassette Feeding Module-A2

6

4

2

1

3 5

GENERAL DESCRIPTION

q Cassette 3 w Cassette 4 e Cassette 3 pick-up roller

Figure 1-304

r Cassette 4 pick-up roller t Drive roller y Feeding roller

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1–9

GENERAL DESCRIPTION

3. Cassette Feeding Unit-K1

1

2

4

3

6

5

9 8 7

q Cassette 3 w Cassette 4 e Cassette 3 pick-up roller r Cassette 4 pick-up roller t Vertical path roller 4

y Vertical path roller 3 u Vertical path roller 5 i Cassette 5 pick-up roller o Cassette 5

Figure 1-305

1–10

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4. Paper Deck Pedestal-K1

GENERAL DESCRIPTION

21 3

q Deck pick-up roller w Deck vertical path roller e Vertical path roller 3 r Deck feeding roller

t Deck separation roller y Lifter u Deck

Figure 1-306

4

67

5

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1–11

GENERAL DESCRIPTION

1–12

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IV. BASIC OPERATION

3 · 5····

2 · 4····

q Sorter key

w Two-sided key (left side)

e Two-sided key (right side)

r AE key t Copy exposure key y Reduce/1:1/Enlarge key u Message display

1 23 7 8 9 10 11 15 20 21 22 23

4 5 6 12 13 14 16 17 18 19 24 25 26

Press to set or cancel the Sort, Staple Sort, and Group modes.

Press to set or cancel the following two-sided copy modes: 1 2-sided, 2 2-sided, 2 1-sided, Book 2-sided.

A

2

Press to set or cancel the AE (Automatic Exposure) mode. Press to manually adjust the copy exposure. Press to enlarge or reduce using a preset copy ratio, or to return the copier to 100% copying (1:1). Place originals in feeder Flashes when the original in the feeder needs to be reloaded. Enter frame erase/margin size Flashes when the width of the edges to be erased or the margin needs to be

Replace originals Flashes when the first original copied needs to be replaced with the next one. Set copy ratio Flashes when the copy ratio needs to be specified.

Select paper size Flashes when the paper size needs to be specified.

Enter original size Flashes when the original size needs to be specified.

Sort mode: When copying a multi-page document, copies are automatically sorted into sets arranged in page order. * To use this mode, your copier must be equipped with the optional Stapler Sorter, Sorter, or ADF/RDF. Staple Sort mode: When copying a multi-page document, copies are automatically sorted into sets arranged in page order and then stapled. * To use this mode, your copier must be equipped with the optional Stapler Sorter. Group mode: When copying a multi-page document, all copies of the same original page are grouped together, and output into different bins. * To use this mode, your copier must be equipped with the optional Stapler Sorter or Sorter.

1 2-sided: Makes two-sided copies from one-sided originals.

2

When you do not know the total page number of the original, the copier automatically counts the original. Select when you know beforehand that there is an odd number of originals. This will save the time spent on counting the original. Select this when you know beforehand that there is an even number of originals. This will save the time spent on counting the original. 2 2-sided: Makes two-sided copies from two-side originals.

2

2 1-sided: Makes one-sided copies from two-sided originals.

Book 2-sided: Makes two-sided copies from facing pages in a book.

2

specified. * Enter the measurement with the Number keys and then press the OK key.

* Enter the copy ratio with the preset copy ratio key, the reduce/1:1/enlarge keys, or the Zoom key, and then press the OK key.

* Select a paper size with the paper select key, and then press the OK key.

* Enter the original size with the Number keys and then press the OK key.

Figure 1-401

i Check Control Card indicator

o Paper Jam indicator

!0 Add Paper indicator

!1 Replace Toner Cartridge

indicator

!2 Paper Supply/Jam Location

indicator

!3 Paper select key !4 Select paper size indicator !5 Copy quantity/copy ratio

display

!6 OK key !7 Auto Zoom key

!8 Zoom key

!9 % key @0 Reset key @1 Stop key @2 Number keys @3 Power switch @4 Start key @5 Clear key @6 Interrupt key

A. Control Panel

Flashes when the original size needs to be selected. * Select the original size with the paper select key, and then press the OK key. Flashes when the copy size needs to be entered.

1 2 3

Lights to indicate the selected paper cassete or stack bypass. When a paper jam occurs, the location of the paper jam flashes. It also lights when the Sorter or right door needs to be inspected, or when a paper jam occurs in the ADF/RDF. Press to select Auto Paper selection, a paper cassette, or the stack bypass. The size of the original/copy paper selected with the Paper select key lights. Displays the entered copy quantity copy ratio, and Additional Functions settings.

Press to confirm items and functions that have been selected when setting modes. Press to set or cancel the Auto Zoom mode. Auto Zoom automatically selects the appropriate copy ratio, based on the size of the originals and the selected copy paper. Press to set or cancel the Zoom mode. Zoom mode allows you to specify a copy ratio from 49 to 204% in 1% increments. Continue pressing for fast selection. Press to display the selected copy ratio. Press to return the settings to standard mode. Press to stop the coper before copying is completed. Press the enter copy quantity and other numerical values when setting a mode. Press to turn the power ON and OFF. Press to begin copying. Press to return the copy quantity to one, or to clear an incorrectly entered value when setting a mode. Press to temporarily stop the current copy job to make priority copies.

Flashes when the control card is not properly inserted.

Flashes when a paper jam occurs.

Flashes when the paper supply in the cassete or stack bypass tray runs out, and when the cassette is not properly set. Flashes when the toner runs low and must be replaced with a new one.

* Enter the copy size with the Number keys, and then press the Ok key.

Table 1-402

Table 1-401

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1–13

GENERAL DESCRIPTION

1–14

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w

e q

GENERAL DESCRIPTION

q Transparency Interleaving key

w Two-page Separation/Image

Combination key (left side)

e Additional Functions key

Figure 1-402

Press to set or cancel the Transparency Interleaving mode.

2

Press to set or change standard settings and custom settings according to specific user needs, and when adjusting and cleaning the copier.

The interleaf sheets are printed with the same images as the transparencies.

The interleaf sheets are left blank.

Copies facing pages in a bound original onto two copy sheets.

2 ON 1: Reduces two originals to fit on one side of a single copy sheet.

2 ON 1/2 Sided: Reduces four originals to fit on two sides of a single copy sheet.

Table 1-403

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1–15

GENERAL DESCRIPTION

B. Making Copies

1) Place your originals.

a. Placing originals on the platen glass

• Lift the platen glass cover.

• Place your original on the platen glass. The surface that you want to copy must face down. Align the edge of the original with the → mark in the centre of the platen glass.

• Gently lower the platen glass cover.

Figure 1-403

b. Placing originals in the ADF or RDF (option)

• Adjust the slide guides to fit the size of your originals.

• Neatly stack your originals face up in the original tray.

3) Press the key.

a. After copying begins, you cannot change the

number of copies, paper size, copy ratio or other copy settings.

b. The copier’s counter automatically counts up

one as each copy is output to the copy tray.

2

1

5

4

87

C 0

Figure 1-405

c. If you want to stop the copier before copying is

complete, press the

Reference:

Pressing the

key will not clear the copy

settings. To clear the copy settings, press the

key.

Figure 1-404

2) Programme the copy settings.

• Press the 0 - 9 keys to enter the number of copies.

• Press the - keys to adjust the copy exposure.

• Press the

• Press the - keys to select a preset copy ratio.

key to select the copy paper size.

1

4

NA

C 0

Figure 1-406

2

3

56

9

87

1–16

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GENERAL DESCRIPTION

C. Using the Stack Bypass

You can place up to 50 sheets of copy paper (a stack approximately 5 mm high) in the stack bypass to be automatically fed into the copier. Use the stack bypass when you want to copy on special stock, such as transparencies or labels, or when the paper size that you want to copy on will not fit in a cassette.

Note:

Note the following points when using the stack bypass:

a. Paper size: A5 (horizontal placement) to A3 b. Paper weight: 64 to 128 g/m c. Acceptable paper

• Plain paper (64 to 128 g/m2)

• Coloured paper

• No. 2 master drawing paper

• Labels

• Transparencies

• Postcards

• Recycled paper d. Curl down copy stock before use. e. There are some types of copy stock which meet

the above specifications but which cannot be fed in the stack bypass.

2

1) Place your originals.

Figure 1-407

Figure 1-408

2) Programme the copy settings.

3) Open the stack bypass.

Notes:

1. Do not use the sort/staple-sort/group mode when copying postcards as it may result in a paper jam.

2. A5R-size copy paper cannot be used to make two-sided or overlay copies.

3. Insert A4-size labels horizontally.

4. If you want the copy stock placed in the stack bypass to be selected when using Auto Paper Selection, specify the size.

Figure 1-409

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1–17

GENERAL DESCRIPTION

4) Adjust the slide guides to fit the size of the copy stock.

Reference:

1. Be sure to adjust the slide guides to fit the size of the copy stock.

2. When feeding A4R or A3-size copy stock, pull out the auxiliary tray.

Figure 1-410

5) Align the required number of sheets of copy stock with the slide guides. The surface that you want to copy on must face up. Insert the copy stock into the copier until it stops.

Notes:

1. Make sure that the height of the paper is not higher than the limit mark on the inside of the slide guides.

2. If the Stack Bypass Size Entry in Custom Settings is ON, select a paper size at this point.

Maximum level

Auxiliary tray

Figure 1-411

Slide guides

Limit mark

Figure 1-412

6) Press the key until the stack bypass lights on the Paper Supply indicator.

mm

Autom.Paper

A3 A4

RA4

A5

A5 R

Autom.Zoom

Figure 1-413

%

OK

%

ZOOM

1–18

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GENERAL DESCRIPTION

mm

7) Press the key.

If you set the Two-sided, Two-page separation, Overlay, Image Separation or Transparency Interleaving modes in step 1 for stack bypass feeding, and you have not selected the size of the paper to be fed, the Paper Size indicator flashes.

2

1

5

4

87

C 0

Figure 1-414

Press the be fed into the stack bypass.

Then press the be selected, press the key so that the Stack Bypass Size Entry display disappears, then press

OK

key.

the

key to select the size of the paper to

Autom.Paper

A4

A5

A5 R

Autom.Zoom

%

OK

%

ZOOM

Figure 1-415

OK

key. If the size you want cannot

D. User Mode

1. Outline

You can change or adjust the factory settings for various functions to meet your specific copying needs. It is also possible to perform cleaning and to make adjustments to the copier.

You can change or adjust the settings for the following items:

Function

01 Auto Clear Time 02 Auto Energy Saver Time 03 Zoom Fine Adjustment 04 Auto Cassette Selection ON/OFF

Stack Bypass Size Specification ON/OFF

05 06 Auto Sort ON/OFF 07 Feeder Cleaning 08 Standard Copy Settings 09 Input Unit mm/Inch Selection 00 Initializing Additional Functions

Table 1-404

2. The Use of Keys and Displays That

Appear When Changing the Settings

a. The Use of Keys

Aditional Function

•

key : Press this key to set or cancel the

Additional Functions and return to the normal copying mode.

OK

key : Press this key to indicate the item

• that you want to change.

C

key : Press this key to clear any mistakes

• that you have made when changing the settings. Also press this key to return to the last previous setting that you had entered.

• Copy Quantity/Copy Ratio Display

Initial setting

2 min. 5 min.

0% ON

OFF

ON

2 min.

NP Drum Cartridge Counter

1 2 3

Autom.Paper

A3 A4

RA4

A5

A5 R

Autom.Zoom

mm

%

OK

•“

Press the key.

The number for a function that can be set. The present setting for a certain function.

Figure 1-417

ZOOM

Figure 1-416

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1–19

GENERAL DESCRIPTION

3. Auto Clear Time

If the copier is not operated (no keys are pressed) for a certain period of time, the copier automatically returns to the standard copy settings. This time period is called the “Auto Clear Time.” You can cancel or freely change the Auto Clear Time.

Auto Clear Time can be set from 1 to 9 minutes in one-minute increments.

1) Press the

• “U01” appears in the Copy quantity/Copy ratio display. To continue setting other Additional Functions, press the

Reference:

Once you set the Additional Functions mode, the key turns red and copying operations cannot be initiated.

2) Check the Copy quantity/Copy ratio display. If “U01” is displayed, proceed to the next step.

Aditional Function

key.

1

key.

Reference:

1. The initial setting for the Auto Clear Time is 2 minutes.

2. You can set Auto Clear Time from 1 to 9 minutes, in one-minute increments.

0

3. To cancel this function, press the

key.

4. If you make a mistake while entering a value, enter the correct value and it will replace the incorrect one that was previously entered, or press the C key and after the display clears, enter the correct value.

OK

5) Press the

key. The Auto Clear Time is changed and “U01” is displayed.

Reference:

If the

key is pressed before the OK key is pressed, the Auto Clear Time that was set is cleared and the copier returns to the normal copying mode.

Reference:

If “U01” is not displayed or if you make a mistake

1

while entering a value, press either the

key or

press the C key and then the 1 key.

3) Press the OK key.

• The current setting is displayed in the Copy quantity/Copy ratio display.

• The possible settings for Auto Clear Time appear in the Copy quantity / Copy ratio display as follows:

Auto Clear Time (min.)

0 1 2 3

4 5 6 7 8 9

Settings

–0 –1 –2 –3 –4

–5 –6 –7 –8 –9

Table 1-405

4) Enter the Auto Clear Time with the Number

0

keys (

- 9).

• The setting time is displayed in the Copy quantity/Copy ratio display.

4. Auto Energy Saver Time

1) Press the

Aditional Function

key.

• “U01” appears in the Copy quantity/Copy ratio display.

2

2) Press the

key.

3) Press the OK key.

• The current setting is displayed in the Copy quantity/Copy ratio display. The possible settings for Auto Energy Saver Time appear in the Copy quantity / Copy ratio display as follows:

Auto Energy Saver Time (min.)

2 5

10 15

30 60

120

Settings

–1 –2 –3 –4

–5 –6 –7

Table 1-406

4) Enter the Auto Energy Saver Time with the

1

Number keys (

- 7).

• The setting time is displayed in the Copy quantity/Copy ratio display.

OK

5) Press the

key.

• The Auto Energy Saver Time is changed and “U02” is displayed.

1–20

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Canon NP6621 Service Manual

CONTENTS

CHAPTER 1

I. FEATURES

II. SPECIFICATIONS

III. NAMES OF PARTS

IV. BASIC OPERATION