Canon GP-200, GP-215 Service Handbook

SERVICE HANDBOOK

REVISION 0

JULY 1996

FY8-23AM-000

Printed in Japan

Imprimé au Japon

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

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.

Prepared by

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION

CANON INC.

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

In this Handbook, work procedures are given in the form of tables instead of flow charts used general-

ly. Familiarize yourself by studying the example below.

EX. AC power is absent.

■ To find out the cause (problem part) of a single problem, refer to the item under “Cause/Fault.” For “AC power is absent,” the cause may be the power plug, covers, power source, or others.

■ To find out the checks to make or remedies to provide for a single problem, refer to the “Checks” and “Remedies”; make checks, answer to the questions YES or NO, and provide remedies accordingly. If the answer is otherwise, proceed to the next step.

■ Checks on the voltage using a meter call for special note; the description “Check the voltage between J109-1 (+) and J109-2 (–) on the DC controller PCB” means that the positive probe of the meter should be placed on J109-1 (+) and the negative probe, on J109-2 (–).

Are the front door

and delivery cover

closed properly?

Is the rated voltage

present at the power

outlet?

Is the power plug connected to the

power outlet?

<Step>

YES

Connect the power plug.

Close the door or the cover.

The problem is not of copier. Advise the customer as such.

Guide To Tables

Cause/Fault

Power plug

Covers

Power source

Step

Answer

YES

Check

Is the power plug connected to the power outlet?

Are the front door and delivery cover closed properly?

Is the rated voltage present at the power outlet?

Is the rated voltage present between J1-1 and -2 (near cord plate)?

Remedies

Connect the power plug

Close the door or the cover

The problem is not of the copier. Advise the customer as such.

Go to step 6.

iii

CHAPTER 1 MAINTENANCE AND INSPECTION

A. IMAGE BASIC ADJUSTMENT

PROCEDURE..........................................1-1

B. POINTS TO NOTE FOR SCHEDULED

SERVICING.............................................1-2

CHAPTER 2 STANDARDS AND ADJUSTMENTS

A. MECHANICAL.........................................2-1 B. ELECTRICAL SYSTEM.........................2-10

CHAPTER 3 TROUBLESHOOTING IMAGE

PROBLEMS

A. INITIAL CHECKS ....................................3-1

B. SAMPLE IMAGE FAULTS .......................3-4

C. TROUBLESHOOTING IMAGE

FAULTS....................................................3-5

CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS

1. E000 (Fixing temperature fails to rise.)...4-1

2. E001 (Fixing temperature is abnormally

high.)........................................................4-2

3. E002/E003 (Fixing temperature is

abnormally high.).....................................4-2

4. E007 (The fixing film has become

displaced.) ...............................................4-3

5. E007-01 (The fixing film fails to return.)...4-4

6. E010 (The main motor fails to lock.) .......4-5

7. E030 (The total copy counter fails to

operate.) ..................................................4-5

8. E031 (The fax counter fails to operate.)......4-5

9. E032 (The copy data controller counter

is faulty.)...................................................4-6

10. E051 (The horizontal registration home

position detection mechanism is faulty.) ....4-6

11. E064 (The high-voltage output is faulty.).....4-7

12. E100 (BD error).......................................4-8

13. E110 (The laser scanner motor fails to

lock.)........................................................4-9

14. E190 (RAM error)....................................4-9

15. E191 (error in serial communication

between DC controller PCB and

composite power supply PCB ...............4-10

16. E202 (Scanner home position is not

detected; no code indication is made.)..4-11

17. E220 (The scanning lamp turns ON

wrongly.).................................................4-11

18. E240 (error in communication between DC controller PCB and image

processor PCB).....................................4-12

19. E243 (error in communication between control panel and image processor

PCB.).....................................................4-12

20. E261 (zero cross error) .........................4-13

21. E310 (The scanning lamp is poorly

adjusted.)...............................................4-13

22. E710, E711, E712, E713, E716 (IPC

communication error).............................4-14

23. E717 (error in communication with

Copy Data Controller)............................4-14

24. E803 (composite power supply PCB

24V output error) ...................................4-14

25. AC power is absent................................4-15

26. DC power is absent...............................4-16

27. The photosensitive dr um fails to rotate. .4-17

28. Pick-up fails. (pick-up from the

cassette)................................................4-17

29. The lifter fails to move up. .....................4-18

30. Pick-up fails. (multifeeder)......................4-18

31. The registration roller fails to rotate.......4-19

CHAPTER 7 SERVICE MODE

A. OUTLINE.................................................7-1

B. USING SERVICE MODE.........................7-2

C. USING ADJUSTMENT MODE AND

SETTINGS MODE ...................................7-3

D. *1* DISPLAY (CONTROL DISPLAY MODE)

.................................................................7-4

E. *2* I/O DISPLAY (I/O DISPLAY MODE)

...............................................................7-21

F. *3* ADJUST (ADJUSTMENT MODE)...7-40

G. *4* FUNCTION (FUNCTION MODE)....7-51

H. *5* OPTIN (SETTINGS MODE) ............7-71

I. *6* COUNTER (COUNTER MODE) ......7-77

J. *7* ACC (ACCESSORY MODE)............7-81

CHAPTER 8 SELF DIAGNOSIS

A. COPIER...................................................8-1

B. SELF DIAGNOSIS OF THE RDF-G1......8-6

C. SELF DIAGNOSIS OF THE ADF-F1.......8-6

D. SELF DIAGNOSIS OF THE

PEDESTAL ..............................................8-7

E. SELF DIAGNOSIS OF THE MULTI

OUTPUT TRAY -C1 .................................8-7

F. SELF DIAGNOSIS OF THE MULTI

OUTPUT TRAY-12...................................8-8

APPENDIX

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

B. SIGNALS AND ABBREVIATIONS ..........A-2

C. GENERAL CIRCUIT DIAGRAM..............A-3

D. SPECIFICATIONS...................................A-7

E. LIST OF SPECIAL TOOLS...................A-13

F. SOLVENTS/OILS ..................................A-14

CHAPTER 5 TROUBLESHOOTING FEEDING FAULTS

A. COPY PAPER JAMS...............................5-1 B. FEEDING FAULTS ...................................5-6

A. CLUTCHES AND SOLENOIDS...............6-2

B. MOTORS.................................................6-4

C. FANS .......................................................6-6

D. SENSORS...............................................6-8

E. SWITCHES AND COUNTERS..............6-10

F. PCBS.....................................................6-12

G. FAX-RELATED PCBS ............................6-14

H. VARIABLE RESISTORS (VR), LIGHT-

EMITTING DIODES (LED), AND CHECK

PINS BY PCB........................................6-16

CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF

ELECTRICAL PARTS

32. The scanner fails to move forward/in

reverse...................................................4-19

33. The pre-exposure lamp fails to turn ON..4-20

34. The scanning lamp fails to tur n ON. ......4-20

35. The fixing heater fails to operate...........4-21

36. The counter fails to operate....................4-21

37. The Add Paper message fails to turn

OFF........................................................4-22

38. The Jam message fails to turn OFF. .....4-22

39. The Add Toner message fails to turn

OFF........................................................4-22

40. The fax error indicator fails to turn

OFF........................................................4-23

CHAPTER 1MAINTENANCE AND INSPECTION

A. Image Basic Adjustment Procedure

1–1

Clean the primary charging roller/transfer charging roller.

• To clean the primary/transfer charging roller, execute 'roller cleaning' under adjustment/cleaning' in user mode.

Clean the separation static eliminatir.

Is the setting of

'EXPOSURE RECALIB''under

adjustment/cleaning'

in user mode a

medium value?

YES

Set it a medium value.

Are there vertical lines (white,black)?

YES

Clean the separation static eliminator, dust-proofing glass, mirrors (No.1,No.2,No.3), standrd white plate,and lens.

Are the copies free of vertical lines?

Service mode (*3*)

Set 'DENS-ADJ' to'5'

Service mode (*4*)

Excute shading auto correction.

Make two solid black copies with the copyboard cover or the feeder open

Service mode (*4*)

Excute the following three items: auto density correction PD 200PWM 60PWM

Is the setting of

service mode'*3*' the value

recorded in the label

attached to the front

door?

YES

Make two to three copies in non AE (copy density at 5).

Enter the value recorded in the label.

YES

Is the white background foggy?

END

YES

Is the white background

free of fogging?

Service Mode (*3*)

Set 'DENS-ADJ' to '5' or lower.

B. Points to Note for Scheduled Servicing

1–2

Part Tools/solvents Work/remarks

Copyboard glass Original saize sensor Scanning lamp Reflecting plate No.1 through No.3 mirrors

Alcohol Blower brush Lint-free paper Blower brush

As necessary, dry wiping with lint-free paper

Cleaning Cleaning Dry wiping

Optical assembly

Part Tools/solvent Work/remarks

Lens Dust-proofing glass

Developing assembly

Part Tools/solvent Work/remarks

Developing roll Alcohol Cleaning

Blower brush Blower brush

Cleaning Cleaning

Fixing assembly/delivery assembly

Part Tools/solvent Work/remarks Separation claw Inlet guide

Solvent Solvent

Cleaning Cleaning

Transfer/feeding assembly

Part Tools/solvent Work/remarks Transfer guide Static eliminator Feeding assembly base/feeding belt

*Make sure no droplet of water remains. Do not turn on the power until the part is completely dry.

Moist cloth* Special brush Moist cloth*

Cleaning Cleaning Cleaning

A. Mechanical

1 Image Leading Edge Margin

(REGIST; registration roller ON timing)

Select ‘REGIST’ (4th screen) in service mode (*3*; ADJUST) and adjust so that the image leading edge margin is 2.5 ±1.5 mm in Direct.

Figure 2-201

2 Left/Right Registration (front)

a. Pick-Up from the Cassette

Check to make sure that the margin on the front side is 2.5 ±1.5 mm when paper is picked up from each cassette.

Figure 2-202

Otherwise, perform the following:

1) Slide out the cassette to be adjusted.

2) Remove the two screws q, and remove the horizontal registration adjustment assembly.

Figure 2-203

3) Loosen the hex screw, and slide the horizontal registration plate toward the rear to adjust.

Figure 2-204

(rear)

(front)

Horizontal registration plate

Hex screw

Hex screw diameter

4mm

Horizontal registration adjustment assembly

(–) (+)

2.5±1.5mm

0 2

4 6

8 10

2.5±1.5mm

2–1

STANDARDS AND ADJUSTMENTS

CHAPTER 2 STANDARDS AND ADJUSTMENTS

Caution:

To adjust, try so that the L-shaped notch on the inside of the horizontal plate and the appropriate scale notch match.

Figure 2-205

b. Pick-Up from the Multifeeder

Loosen the screw and move the tray position

so that it is 2.5 ±1.5 mm in Direct.

3 Left/Right Registration

(rear/front) on the 2nd Side of Two-Sided/Overlay Copies

Check to make sure that the printing position of the image on the second side of a twosided/overlay copy is 2.5 ±2.0 mm.

Figure 2-206

If the value is not as specified, select ‘RSIDSENSHP’ (4th screen) in service mode (*3*; ADJUST), and make adjustments.

• An increase by ‘23’ of ‘RSID-SENSHP’ will shift the image print position to the rear by 1 mm. A decrease by ‘23’, on the other hand, will shift the position to the front by 1 mm.

2.5mm±2.0

Decrease the value of 'RSID-SENSHP'. (A decrease by 23 causes a change of 1 mm.)

Increase the value of 'RSID-SENSHP'. (An increase by 23 causes a change of 1 mm.)

2–2

STANDARDS AND ADJUSTMENTS

4 Routing the Scanner Drive Cable

Route the cable in the order indicated (q through o), and adjust the mirror position as shown on the

following page.

Figure 2-207

32±1mm

Set the mirror positioning tool.

Loosen the set screws to free the pulley rotation.

Put the steel ball into the hole of the pulley. Wind the cable toward the inside 3.5 times and then toward the outside 6 times; then, fit the pulley clip.

Pulley clip

Steel ball

Set screws

2–3

STANDARDS AND ADJUSTMENTS

5 Adjusting the Mirror Position

(optical length between No. 1 and No. 2/No. 3 mirrors)

Caution:

Use the mirror positioning tool FY9-3009-

040. Use it after relocating the pins.

Figure 2-208

Figure 2-208-1

Note:

The pin of the mirror positioning tool (FY9-3009-040) will not be used for the machine.

Initial pin positions (FY9-3009-040) Pin positions adapted to GP215/GP200

Caution:

2–4

STANDARDS AND ADJUSTMENTS

<Rear>

<Front>

Attach the longest pin

Attach the shortest pin

1) Loosen the metal fixing of the scanner cable by turning the screw.

2) Set the mirror positioning tool (adapted as shown) to the No. 1 mirror mount and the No. 2 mirror mount.

Figure 2-209

3) Install the metal fixing of the scanner cable to the No. 1 mirror mount with a screw.

4) Remove the mirror positioning tool.

Figure 2-210

Metal fixing

For rear

For front

2–5

STANDARDS AND ADJUSTMENTS

6 Installing the Scanning Lamp

Install the scanning lamp with the following in

mind:

1. Make sure that the side with the manufacturer’s name is toward the rear of the machine.

2. Make sure that the transparent side of the lamp faces the reflecting plate.

3. Do not touch the transparent surface.

Figure 2-211

7 Positioning the Multifeeder

Paper Guide Cam

Adjust so that the paper guide plate cam is as shown when the solenoid plate is in contact with the claw of the control ring.

Figure 2-212

8 Attaching the Timing Belt of

the Multifeeder Assembly

1) Butt the side plate of the multifeeder against both ends (section A; open condition).

2) Move the slide volume to the center (in the direction of B), and attach the timing belt to the pulley.

Figure 2-213

Pulley

Timing belt

Rack plate

Pulley

Section A

Slide volume

Paper guide plate

Gear 1

Control ring

Stop screw w/hex hole

Claw

Solenoid plate

Gear 2

Transparent surface of scanning lamp

Reflecting plate

2–6

STANDARDS AND ADJUSTMENTS

9 Installation of the Multifeeder

Pick-Up Roller

Install the multifeeder pick-up roller q so that the side with a cross w on the collar is toward the rear.

Figure 2-214

10 Positioning the Delivery

Assembly Paper Deflecting Plate Solenoid (SL5)

1) Remove the deliver y assembly.

2) Place the delivery assembly upright on a level surface.

3) Push in the steel core of the paper deflecting plate 1 solenoid (SL5) until it stops.

4) Loosen the adjusting screw to adjust so that the distance between the steel core E-ring of SL5 and the solenoid frame is about 0.2 mm.

5) Install the delivery assembly to end the work.

Figure 2-215

Paper deflecting plate 1 solenoid (SL5)

0.2mm

2–7

STANDARDS AND ADJUSTMENTS

11 When Replacing the Drum

Unit

When replacing the drum unit, record the date and the latest counter reading in the label shown, and attach the label to the front cover of the new drum unit.

12 Positioning the Developing

Assembly Magnetic Seal

To install the magnetic seal, butt it against the

opening assembly.

Check to make sure that the magnetic seal

and the housing are in firm contact.

Figure 2-216

Figure 2-217

Magnetic seal

(rear) (front)

Magnetic seal

Opening (reference for butting)

date

date Datum

counter

compteur Zähler

notes

note Notiz

2–8

STANDARDS AND ADJUSTMENTS

13 Installing the Developing

Assembly Blade

The blade is adjusted at the factory to ensure high accuracy when the blade and the blade mount are assembled.

Do not separate the blade from its mount.

If you must replace the blade on its own, use a gap gauge (CK-0057-000) and adjust so that the gap between the blade and the developing cylinder is 0.21 ±0.03 mm.

Figure 2-218

The surface of the developing cylinder is highly susceptible to scratches. Be sure to insert the gap gauge into both ends of the developing cylinder.

14 Positioning the Primary Roller

Cleaning Solenoid (SL1)

Adjust so that the section shown of the prima-

ry roller cleaning solenoid (SL1) is 4.0 ±0.2 mm.

Figure 2-219

4.0±0.2mm

Blade

0.21±0.03mm

Developing cylinder

2–9

STANDARDS AND ADJUSTMENTS

B. Electrical System

1 When Replacing major Parts

2–10

STANDARDS AND ADJUSTMENTS

Item

Before replacing the image processor PCB

After replacing the image processor PCB

Service mode

*4* PRM_PRNT

(effective only if equipped with fax function)

*4* RAM Clear *3* (Enter the value recorded on the label.)

• Service label attached to the front door

• Label attached to the image processor PCB

• Label attached to the copier power supply PCB *4* Shading auto correction *4* PD density auto correction *4* 200PWM density auto correction *4* 600PWM density auto correction

Steps

1) Print out all registration data (one-touch dialing, speed dialing, user data list, etc.; effective only if equipped with fax functions).

2) If the machine is equipped with fax functions, execute ‘PRM_PRNT’ (*4*), and take notes of the settings in user mode and others.

• Executing the mode will print out the settings/values under ‘ADJUST’ (*3*), ‘OPTOIN’ (*6*), and ‘COUNTER’ (*6*). If the machine is not equipped with fax functions, you cannot execute ‘PRM_PRNT’ (*4*).

1) Replace the image processor PCB.

2) Execute ‘RAM clear’ in service mode (*4*).

3) Start service mode (*3*), and enter the value recorded on the service label.

4) Enter the values recorded on the image processor PCB under the appropriate item (*3*) as follows:

• 600PWM MIN

• 600PWM MAX

• 200PWM MIN

• 200PWM MAX

5) Execute ‘shading auto correction’ in service mode (*4*).

6) Execute ‘PD density auto correction’, ‘200PWM density auto correction’, and ‘600PWM density auto correction’ in service mode.

7) Enter settings/values under ‘OPTION’ (*5*) and in user mode.

Steps

1) Enter the values recorded on the label attached to the composite power supply PCB under the appropriate items on the 3rd page in service mode (*3*).

2) Execute ‘shading auto correction’ in service mode (*4*).

3) Execute ‘PD density auto correction’ (*4*), ‘200PWM density auto correction’, and ‘600PWM density auto correction’.

1) Execute ‘shading auto correction’ in service mode (*4*).

1) Execute ‘factory/R&D shading auto correction’ in service mode (*4*).

1) Enter the values recorded on the label attached to the fixing assembly under ‘FIXERREGST’ and ‘FILM_LANK’ in service mode (*3*).

2) Execute ‘FILM COMEBACK’ (14th page of ‘FUNCTION’ ).

2-1) Press the ‘OK’ key on the

LCD.

2-2) Check to make sure that

‘RUNNING’ has ended in ‘OK’ and the reading of ‘LEVEL’ is ‘5’ or therearound. If the operation ended in ‘NG’, visually check the film for damage, and execute the mode once again. If the operation ended in ‘OK’, turn off and then on the main power without touching the keys on the control panel.

2–11

STANDARDS AND ADJUSTMENTS

Part

Composite power supply PCB

Laser scanner unit Laser unit CCD unit Analog processor PCB Scanning lamp DC controller PCB Standard white plate Fixing assembly

Service mode

*3* (Enter the values recorded on the label.) *4* Shading auto correction *4* PD density auto correction *4* 200PWM density auto correction *4* 600PWM density auto correction

*4* Shading auto correction

*4* Factory/R&D shading auto correction

*3* FIXER-REGST *3* FILM LANK *4* FILM_COMEBACK

2 Shading Auto Correction

• There are two types of shading auto correction: for servicing and for factory/R&D. (3rd screen in *4*)

• In shading auto correction, various data items are measured, and the results are stored in RAM on the image processor PCB. (The stored data will be used as target value for shading correction executed before copying operation.)

• Use this mode for the following:

• When replacing the image processor PCB

• After executing ‘RAM INIT’ in service mode (*4*)

• Before executing ‘copy auto density correction’ in service mode (*4*)

• After replacing the composite pow er supply PCB

• After replacing the laser unit

• After replacing the CCD unit

• After replacing the analog processor PCB

■■

Work

1) Open the front door, and insert the handle of the separation static eliminator cleaning brush into the fixing assembly releasing opening.

Figure 2-220

2) Insert the door switch actuator into the door switch assembly.

3) Push the service switch with a hex key.

• ‘$’ will be indicated in the upper left corner

of the LCD.

4) Press the * key twice.

• The Service Mode Menu screen will

appear.

Figure 2-221

5) Press ‘FUCNTION’ (*4*) on the Menu screen to highlight; then, press the OK key.

6) Press the Page key to bring up the Shading screen (3rd screen).

Figure 2-222

7) Press ‘AUTO SHADING’ on the LCD to highlight; then, press the OK key.

• ‘shading auto correction’ will be executed.

8) In a while, ‘Now [END]’ will appear on the screen to indicate the end of shading correction.

CANCEL

–

*3* FUNCTION 03

AUTO SHEADING START (OK)

WB GDA1 CDA4 D-ODD

H WP H GD2 H ADDA5 H D-EVN

H LAMP H H CDA3 H H H

Now [ ]

1 DISPLAY 2 I/O DISPLAY 3 ADJUST 4 FUNCTION 5 OPTION 6 COUNTER 7 ACC 8 FAX

CANCEL

* * * * * * * * * * * * * * * *

–

Separation static eliminator cleaning brush

2–12

STANDARDS AND ADJUSTMENTS

3 Copy Density Auto Correction

• There are three types of copy density auto correction: execute the three types as a single set. (You must have executed ‘shading auto correction’ before executing this mode.)

q PD density auto correction w 200PWM density auto correction e 600PWM density auto correction

• This mode is executed to correct the following:

q Laser characteristics w Developing bias

• Execute this mode for the following:

• When replacing the laser unit

• When replacing the copier power supply PCB

• When image faults occur

• When replacing the image processor PCB

■■

Operation

1) Open the front door, and insert the handle of the separation static eliminator cleaning brush into the fixing assembly releasing opening.

Figure 2-223

2) Insert the door switch tool into the door switch actuator.

3) Press the ser vice switch with a hex key.

• ‘$’ will appear in the upper left corner of the

LCD .

4) Press the * key twice.

• The Service Mode Menu screen will appear.

Figure 2-224

5) Press ‘FUCNTION’ on the Menu screen (84*) to highlight; then, press the OK key.

6) Press the Page key to bring up the 3rd screen.

7) Execute ‘shading auto correction’. (See the descriptions for ‘shading auto correction’.)

8) At the end of ‘shading auto correction’, press the Reset key once.

9) With the feeder or the copyboard cover open, make two solid black copies.

10) Check to make sure that ‘$’ is indicated in the upper left corner of the LCD, and press the * key once.

• The Service Mode Menu screen will

appear. (If ‘$’ is not indicated, press the service switch, and press the * key twice.)

11) Press ‘FUNCTION’ (*4*) to highlight; then, press the OK key.

12) Press the Page key to bring up the PD Density Auto Correction screen (4th screen).

Figure 2-225

CANCEL

–

*4* FUNCTION 04 PD PRINT (START) WHITE MEASURE (OK) DENSITY SANPLING (OK) DATA SET (OK) A= B= D= 00 00 00 00 00 00 00 00 00 00 00 00 00 00 MUTI 0 >CASETTE1 A4 CASETTE2 A4

1 DISPLAY 2 I/O DISPLAY 3 ADJUST 4 FUNCTION 5 OPTION 6 COUNTER 7 ACC 8 FAX

CANCEL

* * * * * * * * * * * * * * * *

–

Separation static eliminator cleaning brush

2–13

STANDARDS AND ADJUSTMENTS

2–14

STANDARDS AND ADJUSTMENTS

13) Select either ‘MULTI’, ‘CASSETTE1’, or ‘CASSETTE2’. (Press the appropriate item to select so that the cursor ( ) points to the item.)

14) Generate a PD pattern print. (Press ‘PD PRINT’ to highlight; then, press the Copy Start key.

• You will be using the pattern pr int later.

15) Place five to ten sheets of blank copy paper on the copy board, and close the feeder or the copyboard cover.

Figure 2-226

16) Press ‘WHIE MEASURE’ on the screen to highlight, and press the OK key.

• The scanner will move forward to read the

blank copy paper.

17) Remove the blank copy paper from the copyboard glass, and place the generated pattern print on the copyboard glass against the V marking at the rear left. (You must place the pattern print correctly, or correct adjustment will not be possible.)

■■

Place the pattern print as shown

When the pattern print is placed reversing (left/right) its orientation, the image becomes appreciably light.

Figure 2-227

18) Press ‘DENSITY SAMPLING’ to highlight; then, press the OK key.

• The scanner makes 13 scans.

19) At the end of the operation, check to make sure that the values under A, B, and D on the LCD are as follows. If the values are not as shown, start over at step

7) since the adjustment may have been wrong.

Reference:

A, B, and D are approximate values so that optimum images may still be obtained even if the values are outside the range; you may omit “temporary remedy” as long as the images are optimum.

■■

For PD and 200PWM

20 ≤A ≤ 50

-40 ≤B ≤40 0 ≤D ≤ 8

■■

For 600PWM

20 ≤A ≤ 60

-70 ≤B ≤20 0 ≤D ≤ 8

20) Check the above, and press ‘DATA SET’ to highlight; then, press the OK key.

• This will set the values under A, B, and D

which have been measured.

21) Press the Page key, and execute ‘200PWM density auto adjustment’. (Follow the same steps starting with step 9) to execute the mode.)

22) When ‘200PWM density auto adjustment’ is over, execute ‘600PWM density auto adjustment’. (Follow the same steps starting with step 9) to execute the mode.)

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

If the values under A, B, and D are not as indicated after executing ‘copy density auto correction’ several times and, in addition, optimum images cannot be obtained, you may perform the following as a “temporary remedy”:

The temporary remedy will enable normal copying; however, since the image quality will lower, be sure to correct any fault as soon as possible, and execute ‘copy density auto correction’ once again.

■■

Possible Faults

• Drum unit

• Scanning lamp

• Laser unit

• Composite power supply PCB

• Analog processor PCB

• Image processor PCB

Printed side down

Copy paper

Copyboard glass

4 Registering the Multifeeder

Paper Width Basic Values

You must register the multifeeder paper width basic values whenever you have replaced the multifeeder paper width detecting VR.

1) Replace the paper width detecting VR.

2) Open the front door, and insert the handle of

the separation static eliminator cleaning brush into the fixing assembly releasing assembly.

3) Inser t the door switch actuator into the door

switch assembly.

4) Press the ser vice switch with a hex key.

5) Press the * key twice.

6) Press ‘FUNCTION’ on the screen (*4*) to

highlight; then, press the OK key.

7) Press the Page key to bring up the Multifeeder

Paper Width Basic Values Registration screen.

Figure 2-228

8) Set A6 paper in the multifeeder, and adjust

the side guide to A6R.

Note:

A6 is what is obtained by folding A4 paper into four; the width is 105 mm.

9) When the side guide is adjusted to A6R, the

VR output value will be indicated under ‘AD=xxx’ on the screen. After checking the value, press ‘MF-A6R’ on the screen to highlight; then, press the OK key.

• The value will be stored under ‘MF-A6R’.

10) Likewise, set A4R paper in the multifeeder,

and adjust the side guide to A4R.

11) Check that the value of ‘AD’ is indicated; then, press ‘A4R’ to highlight, and press the OK key.

• The value will be registered under ‘A4R’.

12) Set A4 paper in the multifeeder, and adjust the side guide to A4.

13) Check that the value of ‘AD’ is indicated; then, press ‘A4’ to highlight, and press the OK key.

• The value will be stored under ‘A4’.

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

15) Turn off and on the main power switch.

Figure 2-229

A4R

A6R

(105mm)

A4R

(210mm)A4(297mm)

Paper width →

VR output →

–

*4* FUNCTION 07

AD =xxxx MF-A6R=xxx

MF-A4R=xxx MF-A4 =xxx

SIZE =xxx.x (mm)

CANCEL

2–15

STANDARDS AND ADJUSTMENTS

5 Shading Auto Correction

• There are two types of shading correction: for servicing and for R&D/factory. (Use the 3rd screen in *4*; do not use shading auto correction for R&D/factory.)

• In shading correction, various data items are measured, and the results are stored in RAM on the image processor PCB. (The data will be used as target values for shading correction executed before copying.)

• Execute the mode (R&D/factory) for the f ollowing:

• After replacing the standard white plate

• After replacing the scanning lamp

• After replacing the DC controller PCB

1) Open the front door, and insert the handle of the separation static cleaning brush into the fixing assembly releasing opening.

Figure 2-230

2) Inser t the door switch actuator into the door switch assembly.

3) Press the ser vice switch with a hex key.

• ‘$’ will be indicated in the upper left corner

of the LCD.

4) Press the * key twice.

• The Service Mode Menu screen will appear.

Figure 2-231

5) Press ‘FUNCTION’ on the Menu screen (*4*), an press the OK key.

6) Press the Page key to bring up the Shading screen (12 the screen).

Figure 2-232

7) Place five to ten standard blank sheets of paper (FY9-3004) on the copyboard glass.

Figure 2-233

Copy paper

Copyboard glass

CANCEL

–

*3* FUNCTION 12

AUTO SHEADING START (OK)

WB GDA1 CDA4 D-ODD

H WP H GD2 H ADDA5 H D-EVN

H LAMP H H CDA3 H H H

Now [ ]

1 DISPLAY 2 I/O DISPLAY 3 ADJUST 4 FUNCTION 5 OPTION 6 COUNTER 7 ACC 8 FAX

CANCEL

* * * * * * * * * * * * * * * *

–

Separation static eliminator cleaning brush

2–16

STANDARDS AND ADJUSTMENTS

8) Press ‘AUTO SHADING START’ on the LCD to highlight; then, press the OK key.

• ‘shading auto correction’ will be executed.

9) A beep will be sounded while the lamp is being adjusted (with the screen indicating ‘LAMP LEVEL’); press the OK key when the beep stops.

• If no beep is heard, remove the rear cover,

and turn VR1 on the DC controller PCB until a beep is heard; then, press the OK key. If no beep is heard after turning VR1 fully clockwise, press the OK key while keeping VR1 turned fully clockwise.

Figure 2-234

10) In a while, ‘Now [END]’ will appear on the screen, indicating the end of shading auto correction.

6 Updating

• Replace the ROM DIMM (double inline memory module) on the image processor or update it by downloading as discussed.

• Downloading will update the ROM DIMM; you must replace the following ROMs to update:

• IC103 (DC controller PCB)

• IC104 (DC controller PCB)

a. Replacing the ROM DIMM 1 Removing the ROM DIMM

1) Turn off the main power switch.

2) Disconnect the power cord from the power outlet.

3) Remove the copyboard glass, lens cover, and IP cover.

4) While opening the claw of the slot, lift the ROM DIMM to remove.

Figure 2-235

CANCEL

*4* FUNCTION 12

R&D SHEADING START (OK)

WB xxxxH WP xxxxH LAMP xxxxH GDA1 xxH GD2 xxH CDA3 xxH CDA4 xxH ADDA5 xxH D-ODD xxH D-EVN xxH

Now [LAMP LEVEL ]

–

2–17

STANDARDS AND ADJUSTMENTS

2 Installing the ROM DIMM

1) Insert the ROM DIMM into the slot at an angle.

Figure 2-236

2) Shift down the ROM DIMM.

• Shift it down in the direction of the arrow

until a click is heard.

Figure 2-237

3) Install the removed covers, and connect the power cord into the power outlet; then, turn on the main power switch.

b. Downloading

■■

Tools Required

• PC (The utility program for upgrading and the new program to be written to the ROM DIMM must have been installed in advance.)

• RS232C cable

■■

Downloading

1) Turn off the main power switch.

2) Open the front door, and remove the connector cover for servicing; connect the copier to the PC with an RS232C cable.

Figure 2-238

3) Inser t the handle of the separation static

eliminator cleaning brush into the fixing assem-

bly releasing assembly, and insert the door

switch actuator into the door switch assembly.

4) Turn on the main power switch. Then, press the service switch, and press the * key twice.

5) Press ‘FUNCTION’ (*4*) on the screen to highlight; then, press the OK key.

Cover

2–18

STANDARDS AND ADJUSTMENTS

6) Press the Page key to bring up the Downloading screen.

Figure 2-239

7) Press ‘IP DOWNLOAD’ on the screen to highlight; then, press the OK key.

• A press on the OK key will automatically

shut down and boot the power.

• When the machine boots up, it will show

the following screen to indicate that it is in downloading mode:

CANCEL

*4* FUNCTION 13 IP DOWN LOAD PRCON DOWN LOAD

–

JUMP

2–19

STANDARDS AND ADJUSTMENTS

7 AE Adjustment

The machine’s AE (auto density adjustment) mode may be either “priority on speed mode” or “priority on image quality mode.” Each of these modes may be adjusted in service mode, and the concepts used for the modes are as follows:

1. Priority on Speed Mode

Use ‘ABC_TBL’ under ‘ADJUST’ in service mode (*3*).

• A lower value for ‘ABC_TBL’ will make the text darker; between 1 and 9.

• A higher value for ‘ABC_TBL’ will make the text lighter; between 1 and 9. (factory default: 3)

The adjustment will modify the density correction curve.

Figure 2-240

Copy density

Original density

White

Black

Higher setting Lower setting

2–20

STANDARDS AND ADJUSTMENTS

2. Priority on Image Quality Mode a. AE_SLOP

For priority on image quality mode, an AE table is selected based on a study of the original density his-

togram prepared during a pre-scan.

The slice level distinguishing the data into text (black) and background (white) can be adjusted under

‘AE_SLOP’ in service mode (ADJUT; *3*).

AE_SLOP: A higher setting makes the images darker; between 1 and 19. (left of Figure 2-241)

b. AE_LIGHT/AE_DARK

The AE table selected as a result of a pre-scan may be corrected to suit the preference of the user.

AE_LIGHT: A higher setting emphasizes the background of the original; a lower setting, on the other hand, de-emphasize the background of the original; between 0 and 40 with the default at 20. (upper right of Figure 7-00)

AE_DARK: A higher setting will increase black; a lower setting, on the other hand, will decrease b lac k; between 0 and 40 with the default at 20. (Figure 2-241)

Figure 2-241

Original density histogram

Dark (black)

Light (white)

Signal level

Degree

Text

Background

AE table

Input

Output

Light (white)

Dark (black)

Black

White

Input

Output

Light (white)

Dark (black)

Black

White

Input

Output

Light (white)

Dark (black)

Black

White

Slide level dividing white area (background) and black area (text; may be changed under 'AE_ SLOP' of 'ADJUST' in service mode (*3*)).

Higher setting

Lower setting

May be adjusted under 'AE_LIGHT' of 'ADJUST' in service mode (*3*).

May be adjusted under 'AE_DARK' of 'ADJUST' in service mode (*3*).

Lower setting

Higher setting

2–21

STANDARDS AND ADJUSTMENTS

8 Checking the Photointerrupters

The photointerrupters may be checked either using a conventional tester or using service mode.

1. Using a Tester

1) Set the tester range to 12 VDC.

2) Connect the tester probe to GND (0 VDC) of the DC controller PCB.

3) Make checks as instructed.

2. Using Service Mode

1) Open the front door, and insert the door switch actuator into the door switch assembly; then, insert the handle of the static eliminator cleaning brush into the fixing assembly releasing assembly.

2) Press the ser vice switch.

3) Press the * key twice, and press ‘I/O DISPALY’ (*2*) to highlight; then, press the OK key.

4) Press the Page key to select the screen showing the desired address.

2–22

STANDARDS AND ADJUSTMENTS

No. Name

Tester probe Service mode Make checks; nor-

mal if as indicated.

Display reading Tester reading

PS1

Scanner home position sensor (SCHP)

J107-A2

—

Move the scanner from home position during standby.

PS2

Fixing film sensor (FFD)

J109-3

DC PA0-bit0

Move the detecting lever by hand during standby.

PS3

Copyboard cover open/closed sensor (CBCC)

J113-B9

DC PA0-bit1

Open/close the copyboard cover during standby.

The scanner is at home position.

—

about 5 V

The scanner is not at home position.

—

about 0 V

The lightblocking plate is present.

about 5 V

The lightblocking plate is absent

about 0 V

The copyboard cover is closed.

about 5 V

The copyboard cover is opened.

about 0 V

+ 187 hidden pages

Canon GP-200, GP-215 Service Handbook

Guide To Tables

CONTENTS

A. Image Basic Adjustment Procedure

B. Points to Note for Scheduled Servicing

A. Mechanical

CHAPTER 2 STANDARDS AND ADJUSTMENTS

B. Electrical System