Canon GP-160, GP-160F, GP-160DF Service Handbook

REVISION 0

FEB. 1999

FY8-23B3-000

GP160F/160DF/160

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 PRINTEDMATTER.

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 DEPARTMENT 3

OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION

CANON INC.

5-1, Hakusan 7-chome, Toride-shi, Ibaraki 302-8501 Japan

CHAPTER 1 MAINTENANCE AND SERVICING

A. Main Unit......................................1-1

1. Periodic replacement parts .....1-1

2. Estimated lifespan of

consumable parts ....................1-1

B. ADF..............................................1-2

1. Periodic replacement parts .....1-2

2. Consumables replacement

targets .....................................1-2

C. Basic servicing procedures..........1-3

D. Car tridge storage and handling....1-4

1. Storage when the packing

seal is intact ............................1-4

2. Storage and handling when the packing seal has been

opened ....................................1-5

CHAPTER 2 STANDARDS AND ADJUSTMENTS

A. Mechanical system.......................2-1

1. Right and left registration

adjustment...............................2-1

2. Image leading edge margin

adjustment...............................2-2

3. Attaching the scanner wire......2-2

4. Mirror positioning adjustment..2-3

5. Printer unit receptacle connector mount positioning

adjustment...............................2-6

6. Check the pressure (nip width)

of the fixing pressure roller .....2-6

B. Electrical System..........................2-8

1. Automatic shading

adjustment...............................2-8

2. Image positioning

adjustment...............................2-8

3. Sensor check ........................2-11

4. Image processor PCB

replacement procedures .......2-13

C. ADF height adjustment...............2-14

1. Height check .........................2-14

2. Height adjustment.................2-15

D. Skew feed adjustment................2-16

1. Checking ADF skew feed......2-16

2. Adjusting skew feed ..............2-17

E. Adjusting image position............2-18

1. Checking image position.......2-18

2. Adjusting image position.......2-21

CHAPTER 3 ARRANGEMENT AND FUNCTIONS

OF ELECTRICAL PARTS

A. Clutches, solenoids......................3-2

B. Motor, fan .....................................3-4

C. Sensors........................................3-6

D. Switches, lamps, miscellaneous...3-8

E. PCBs..........................................3-10

F. Variable resistor (VR)/LED/check

pin listed by PCB plate ...............3-12

1. Image processor PCB...........3-13

2. DC controller PCB/Sensor

PCB.......................................3-14

3. Feeder controller PCB

(Cassette feeder) ..................3-16

4. Modem board........................3-17

5. NCU board............................3-18

6. ADF.......................................3-19

A. User errors ...................................5-1 B. Service errors...............................5-8

CHAPTER 4 SERVICE MODE

A. Overview ......................................4-1

B. Operating Procedures..................4-2

C. Service mode menu list................4-3

D. SSSW Default Setting..................4-9

E. Parameter settings.....................4-24

1. SSSW settings......................4-24

2. Menu switch settings

(#2 MENU)............................4-42

3. Numeric settings by type

(#3 NUMERIC Param.) .........4-44

4. Special settings

(#4A SPECIAL).....................4-47

5. Country type setting

(#5 TYPE)..............................4-49

6. Document scanning function

setting (#6 SCANNER) .........4-49

7. Printer parameter settings

(#7 PRINTER).......................4-50

8. Initialization of setting values

(#8 CLEAR) ...........................4-54

9. ROM information display

(#9 ROM) ..............................4-55

10.CS SET (mirror mount

initialization setting) ...............4-55

E. Test Mode (TEST MODE)..........4-56

1. Overview ...............................4-56

2. Test Mode menu....................4-57

3. D-RAM test <1:DRAM>.........4-64

4. CCD test <2:CCD TEST>.....4-65

5. PRINT test <3:PRINT> .........4-65

6. MODEM NCU test

<4:MODEM NCU> ................4-67

7. AGING test

<5:AGING TEST> .................4-71

8. FACULTY test

<6:FACULTY TEST> .............4-71

9. BOOK scanning test

<8:BOOK TEST>...................4-86

CHAPTER 5 SELF DIAGNOSIS

APPENDIX

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

B. SIGNALS AND

ABBREVIATIONS ........................A-3

C. GENERAL CIRCUIT DIAGRAM ..A-5

1. Image processor PCB ............A-5

2. DC controller PCB ..................A-8

3. Cassette Feader...................A-10

4. ADF.......................................A-11

D. SPECIFICATIONS .....................A-13

1. Type ......................................A-13

2. Method..................................A-13

3. Functions ..............................A-14

4. Other.....................................A-15

5. Copy speed...........................A-16

6. Communication section ........A-17

7. Scanning system ..................A-18

8. Recording system.................A-18

9. Memory.................................A-18

10.Transmission functions .........A-19

11.Dialing...................................A-19

12.Reception functions ..............A-20

13.Activity management

function .................................A-21

CHAPTER 1 MAINTENANCE AND SERVICING

1-1

CHAPTER 1 MAINTENANCE AND SERVICING

A. Main Unit

1. Periodic replacement parts

There are no parts in the unit that need to be periodically replaced.

2. Estimated lifespan of consumable parts

It may be necessary to replace parts due to wear or damage more than once during the warranty period.The expected life (number of pages) of parts that do not need to be replaced until they fail is indicated below.

As of January, 1999

*1 A total of 4, including the main unit and a single level cassette feeder

A total of 8, including the main unit and a three-level cassette feeder

*2 A total of 4, including the main unit and a single level cassette feeder (2 separa-

tion rollers and 2 transport rollers) A total of 8, including the main unit and a three-level cassette feeder (4 separation rollers and 4 transport rollers)

Table 1-1

no.

1 2

3 4

Part Name

Fixing assembly Transfer corona

assembly roller Paper feed roller Separation roller,

transport roller Multi-feeder paper

feed roller Multi-feeder separa-

tion pad Exhaust fan

Part No.

FG6-1259-000 RG5-3527-000

RB2-1821-000

RF5-2490-000

RB2-1820-000

RF5-2400-000

RH7-1354-000

Number of

parts

1 1

1 each *

Estimated Number

of Pages Copied

150,000 150,000

200,000 200,000

200,000

25,000 hours

Remarks

25,000 hours is 3 years of 24-hour continuous power supply

The information in the table above is only an estimate, and may be revised in the light of empirical data.

Caution:

CHAPTER 1 MAINTENANCE AND SERVICING

1-2

B. ADF

1. Periodic replacement parts

There are no parts in the unit that need to be periodically replaced.

2. Consumables replacement targets

These parts may require replacement once or more during the warranty period due to deterioration or damage. The expected life (number of pages) of parts that do not need to be replaced until they fail is indicated below.

As of January, 1999

Table 1-2

No.

2 3

Part Name

Pick-up roller/ separation roller

Friction bar Stamp unit

Part No.

HG5-1652-000

FG6-1303-000 HH7-2206-000

Quantity

1 1

Expected life span

50,000 sheets

100,000 sheets

Remarks

The information in the table above is not unit counter data but the actual number of sheets.It is only an estimate, and may be revised in the light of empirical data.

Caution:

CHAPTER 1 MAINTENANCE AND SERVICING

1-3

C. Basic servicing procedures

This product has no areas which require periodic service. However, in order to extend the life of the product and par ts, we recommend the following procedures be carried out when carrying out service to replace consumable parts.

Table 1-3

No.

8 9

Procedure

Greet the customer

Test copy

Clean the optical unit

Clean the transfer guide

Clean the separation and transport parts

• Separation static charge eliminator

• Transport belt

Clean the fixing and delivery assemblies

• Fixing assembly inlet guide

Clean the copy board glass

Make a test copy Tidy up around the unit

Inspection Items

Consult about the machine’s condition

a. Image density b.Soiled background c. Character clarity d.Leading edge margin e.Fixing, faulty synchro-

nization, soiled reverse side

Remarks

Clean with a blower brush. When very soiled, use an alcohol cleaner.Wipe the white reference plate with a dry cloth.

Remove the cartridge before servicing.

CHAPTER 1 MAINTENANCE AND SERVICING

1-4

D. Cartridge storage and handling

Cartridges are constantly influenced by the surrounding environment whether the packaging is sealed or opened, or the cartridge is installed in the main unit. The cartridge will deteriorate over time regardless of the number of pages copied.The pace of this deterioration over time depends on the installed and storage environments. Please take sufficient care when storing and handling the cartridge.

1. Storage when the packing seal is intact

When cartridges are stored in a warehouse or workshop, do not place them in locations other than those listed in Table 1-4.Also, take heed of the following points.

• Do not store in direct sunlight.

• Do not store in a location subject to strong vibrations.

• Do not handle roughly or drop.

Table 1-4 Temperature and humidity conditions for storage

The total warranty period is the period effective from the date of manufacture printed on the cartridge packing box.

Caution:

Normal (90% of the total storage period)

Extreme (10% of the total storage period)

Temperature

Temperature variation

(within a 3-minute span)

Normal (90% of the total storage period)

Extreme (10% of the total

Humidity

storage period)

Atmospheric pressure

Total warranty period

Maximum temp.

Minimum temp.

Maximum humidity

Minimum humidity

0 to 35˚C

35 to 40˚C

-20 to 0˚C

40˚C to 15˚C

-20˚C to 25˚C

35 to 85%

relative humidity (RH)

85 to 95% RH 10 to 35% RH

460 to760mmHg (0.1 to 1 atmospheric pressure)

About 2.5 years

CHAPTER 1 MAINTENANCE AND SERVICING

1-5

2. Storage and handling when the packing seal has been opened

The photosensitive drum uses an organic photoconductor (OPC).The photosensitive drum will deteriorate if exposed to strong light. Also, the cartridge contains toner, so please provide customers with adequate explanations of storage and handling methods, and advise them to always store the cartridge in a storage bag.

a. Storage environment after the packing seal has been opened a) Always store in the storage bag.

b) Do not store in direct sunlight, near a window or other bright places. Do not store in

an automobile for long periods of time. Even when the cartridge is in the storage bag, do not leave it for long periods in direct sunlight or in an automobile.

c) Do not store in extremely high or low temperatures or humidity, or in a location which

experiences dramatic changes in temperature or humidity. (For example, next to a heater or air conditioner.)

d) Do not store in a location exposed to corrosive gases (insecticides, etc.) or in a loca-

tion with air that has a high salt content.

e) Do not store in a location that is very dusty or filled with ammonia or organic solvent

fumes.

f) Do not store near computer monitors, disk drives or floppy disks. (The magnetism of

the cartridge may damage the data stored in these devices.) g) Store out of reach of children and infants. h) Store the cartridge between 0 to 35°C.

b. Cartridge shelf life

The shelf life of a cartridge is 2.5 years from the date of manufacture.The production date is displayed in abbreviated form on the cartridge. Also, for customer use, the expiration date , 2.5 years from the date of manufacture, is displayed on the cartridge packing box and on the main packing box. It is preferable to use up the car tridge before the expiration date, because after that date the cartridge image quality deteriorates.

CHAPTER 1 MAINTENANCE AND SERVICING

1-6

c. Handling a) When setting the cartridge in the copier, or when blank areas occur in the copy

image because toner runs out during copying, hold the cartridge level, as shown in figure 1-1, and shake it several times at about 90Þ in both directions. After the toner inside the cartridge has been leveled evenly, set the cartridge in the copier. If the cartridge is shaken in a manner other than that described above, there is the danger that toner may leak from the developing assembly and cleaning assembly.

Figure 1-1

In order to completely prevent output image stains due to toner leakage, be sure to make 3-5 test copies after setting the cartridge in the copier.

b) As shown in Figure 1-2, do not hold the cartridge vertically or upside down. Also, do

not wave it about.

Figure 1-2

CHAPTER 1 MAINTENANCE AND SERVICING

1-7

c) Do not manually open the shutter of the photosensitive drum on the bottom of the

cartridge. Do not touch the surface of the photosensitive drum.

d) Do not disassemble the cartridge. e) Do not subject to unnecessary vibration or shock.

Particularly, do not subject the photosensitive drum to pressure from the top of the photosensitive drum cover shutter.

f) When transporting the copier, remove the cartridge from the main unit. Place the

cartridge in the protective bag or wrap in a thick cloth and keep out of direct light.

g) Do not store near computer monitors, disk drives or floppy disks. (The magnetism of

the cartridge may damage the data stored in these devices.) h) Store out of reach of children and infants. i) The photosensitive drum is sensitive to strong light, so the cartridge is equipped with

a light-blocking shutter. However, if subjected to strong light for an extended period

of time, white spots and vertical bands may appear on the images. In that case,

refraining from use of the machine for as long as possible will result in almost com-

plete recovery. However, in some cases the traces (white spots, vertical bands) may

not disappear.

Please note the following items.

j) Instruct the user to return used cartridges to a designated collection center.

If the surface of the photosensitive drum is accidentally soiled, wipe with a polishing cloth dampened with toner.Do not wipe with a dry cloth or clean with solvents.

Caution:

1. Perform jam removal and cartridge replacement promptly.

2.When the cartridge is removed from the copier and stored, or when using a color cartridge, be sure to place the cartridge in a storage box or cover it with a cloth.Do not leave the cartridge exposed, once removed from the main unit.

Caution:

CHAPTER 1 MAINTENANCE AND SERVICING

1-8

Reference:

The cartridge will perfectly fit for use for copying if placed in darkness for 5 minutes after exposure to 1,500lux intensity light (normal light) for 5 minutes,. However, do not expose the cartridge to direct sunlight. The sun’s rays have a light intensity ranging from approximately 10,000lux to 30,000lux.

Do not incinerate used cartridges as there is a risk of bursting or explosion. When a used cartridge must be disposed of, dispose of it as nonflammable trash.

Caution:

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-1

CHAPTER 2 STANDARDS AND ADJUSTMENTS

A. Mechanical system

1. Right and left registration adjustment

Check that the front edge image margin of paper fed from each cassette is 2.5

± 2.0mm.

If the standards are off, adjust according to the procedure described below.

1) Remove the cassette from the cassette level that needs adjustment.

2) Loosen the hex screw and move the adjusting plate back and for th. Adjust by lining up with the 1mm interval scale marks.

Figure 2-1

(–) (+)

Hex wrench

Scale

1mm

2.5 ± 2.0mm

0 2

4 6

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-2

2. Image leading edge margin adjustment

Adjustment when the leading edge of the printed image is out of alignment. a) Use a precision screwdriver to press down on SW401 and output a test print. b) Turn VR401 and adjust the leading edge margin of the test print to 4.0 ± 2.0mm.

Figure 2-2

3. Attaching the scanner wire

Attach the wire, following steps 1 to 9. Then perform the mirror positioning adjustment described on the next page.

Figure 2-3

SW401

VR401

4.0 ± 2.0mm

VR401

Precision screwdriver (3mm)

Pulley clip

[4]

[2]

[1]

Attach the mirror positioning plate.

[3]

Put the steel ball into the pulley hole. Wrap the wire 2 times to the inner side and 7 times to the outer side. Then, attach the pulley clip.

[2]

[5]

[6]

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-3

4. Mirror positioning adjustment

a) Adjusting position of No.2 mirror mount

If the optical section wire pulley’s hexagonal fixing nut has been loosened, follow the procedures described below to adjust the position of the No. 2 mirror mount, and then tighten the hexagonal nut.

Figure 2-4

The mirror positioning tool used in the positioning of the No. 2 mirror mount is illustrated below.

Figure 2-5

Optical section wire pulley

Hexagonal nut

[C]

[A]

[B]

[C]

[3]

[2]

[1]

FY9-3009-040 (for rear use)

[C]

[B]

[A]

[B]

[3]

[2]

[1]

When used to adjust the No. 2 mirror mount (for rear use)

[C]

[B]

[3]

[2]

[1]

FY9-3009-040 (for front use)

[2]

[1]

When used to adjust the No. 2 mirror mount (for front use)

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-4

With the mirror positioning tool fitted in the holes shown below, tighten the optical

unit wire pulley’s hexagonal fixing nut.

Figure 2-6

b) Adjustment of distance between No.1 and No.2 mirror mounts

With the optical system wire fixing tool for No. 1 mirror mount loosened, follow the procedures described below to adjust the distance between No. 1 and No. 2 mirror mounts, and then tighten the fixing tool.

This adjustment should be performed after the operation to adjust the position of No. 2 mirror mount, as described above.

Figure 2-7

for rear use

for front use

Screw

Fixing tool

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-5

The mirror positioning tool used in the adjustment of the distance between No.1 and

No.2 mirror mounts is illustrated below.

Figure 2-8

With the mirror positioning tool fitted in the holes shown below, attach the optical unit

wire hexagonal fixing tool.

Figure 2-9

[C]

[B]

[A]

[C]

[3]

[2]

[1]

FY9-3009-040 (for rear use)

[C]

[B]

[A]

[B]

[3]

[2]

[1]

When used to adjust the distance between No. 1 and No. 2 mirror mounts (for rear use)

[A]

[B]

[3]

[2]

[1]

FY9-3009-040 (for front use)

When used to adjust the distance between No. 1 and No. 2 mirror mounts (for front use)

[1]

for rear use

for front use

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-6

5. Printer unit receptacle connector mount positioning adjustment

When the printer unit receptacle connector is removed or attached, adjust the mount position, following the procedure described below.

1) Loosen the 3 receptacle connector screws.

2) Adjust so that the interval between the printer unit frame and the receptacle connec-

tor is 3.5 ± 0.5mm.

Figure 2-10

6. Check the pressure (nip width) of the fixing pressure roller

This machine has no adjustment mechanism for the fixing assembly nip width. However, if the nip width is not correct, faulty fixing may occur.

Therefore, check the fixing assembly nip width by following the procedures described below. If the nip width is outside the standards, replace the fixing assembly.

1) Make one solid black copy on size A3 paper.

2) Place the black side of the paper face down and set the solid black copy in the multi-

feeder.

3) When the leading edge of the paper comes out into the copy tray, quickly switch off

the power source and leave it as is for about 10 seconds.

4) Remove the paper as you would to clear a paper jam from the printer unit.

5) Measure the width of the part of the removed paper that is wet and shiny with toner.

Check that the width is within the range displayed in Table 2-1.

Printer unit

3.5 ± 0.5mm

Screws

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-7

Figure 2-11

Table 2-1

Direction of paper feed

15mm

Center of A3 size printer paper

15mm

| c - a |

| b - a |

| b - c |

Dimensions

5.5 ± 1.0 (mm)

1.0 (mm) or less

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-8

B. Electrical System

Adjustment items for the electrical system include automatic shading correction and image positioning adjustment. When the main parts listed for each below are replaced, perform adjustments.

• When the scanning lamp is replaced: automatic shading adjustment

• When the CCD unit is replaced: automatic shading adjustment

• When the image processor circuit board is replaced: image positioning adjustment, automatic shading adjustment

1. Automatic shading adjustment

1) Open the 3 covers of the control panel’s one-touch panel.Set the slide switch ON

2) Enter the service mode and select TEST MODE.(See page 4-56)

3) Press 2 on the control panel’s numeric keypad. (TEST MODE”: CCD will be selected.)

4) When you press 8 on the numeric keypad, automatic shading adjustment will start.

5) When OK is displayed on the display, the adjustment is finished.

6) After pressing the control panel stop key, press the clear key. (To exit TEST MODE.)

7) Turn the control panel slide switch OFF.

2. Image positioning adjustment

1) Make a test chart with marks every 1cm from the leading and left edges of the page, as shown in the figure below.

Figure 2-12

Leading edge

10mm

Mark a line

A4 size copy paper

Left edge

10mm

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-9

2) Select 9.BOOK from service mode #6 SCANNER. Set 1 in 018.

3) Set the test chart you made on the copyboard glass with the image facing down.

Figure 2-13

4) Copy the image enlarged to 400%.

5) Measure the length of the leading and left edges of the copied image (see the figure below).

Figure 2-14

6) Refer to Table 2-2. Work out the input value that corresponds to the measurement taken in step 5.

7) Select 8. CCD from service mode #6 SCANNER. Enter the value worked out from the leading edge data, 007, and the left edge data, 010 in step 6).

8) Select 9.BOOK from service mode #6 SCANNER. Set 0 in 018.

9) Exit service mode. Copy the image at 100%. Check that the copied image and the original document positioning matches.

Left edge

Leading edge

10mm

CARD

(Image facing down)

B5 B4

CARD

Document

A3B4A4B5A5A3B5A5

Leading edge

Left edge

Output image (400% enlarged copy)

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-10

Actual measurement: value of markings on image enlarged to 400% Input measurement: value input in service mode.

Table 2-2

Feed direction (leading edge)

Actual measurement Input measurement

30.0 41

31.0 40

32.0 39

33.0 38

34.0 37

35.0 36

36.0 35

37.0 34

38.0 33

39.0 32

40.0 31

41.0 30

42.0 29

43.0 28

44.0 27

45.0 26

46.0 25

47.0 24

48.0 23

49.0 22

50.0 21

Main scanning direction (left edge)

Actual measurement Input measurement Actual measurement Input measurement

30.0 118 40.2 158

30.3 119 40.4 159

30.5 120 40.7 160

30.8 121 40.9 161

31.0 122 41.2 162

31.3 123 41.4 163

31.5 124 41.7 164

31.8 125 41.9 165

32.0 126 42.2 166

32.3 127 42.4 167

32.5 128 42.7 168

32.8 129 43.0 169

33.0 130 43.2 170

33.3 131 43.5 171

33.6 132 43.7 172

33.8 133 44.0 173

34.1 134 44.2 174

34.3 135 44.5 175

34.6 136 44.7 176

34.8 137 45.0 177

35.1 138 45.2 178

35.3 139 45.5 179

35.6 140 45.7 180

35.8 141 46.0 181

36.1 142 46.3 182

36.4 143 46.5 183

36.6 144 46.8 184

36.9 145 47.0 185

37.1 146 47.3 186

37.4 147 47.5 187

37.6 148 47.8 188

37.9 149 48.0 189

38.1 150 48.3 190

38.4 151 48.5 191

38.6 152 48.8 192

38.9 153 49.1 193

39.1 154 49.3 194

39.4 155 49.6 195

39.7 156 49.8 196

39.9 157 50.0 197

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-11

3. Sensor check

Assessment of the status of the photo-interrupter is performed by the SENSOR test

in the TEST MODE.The procedure is as described below.

1) On the control panel, press the Entry/Setting key, then the # key to enter the service mode.

2) Press the shift keys (up arrow, down arrow) to select TEST MODE.

3) Press 6 on the numeric keypad to select FACULTY TEST.

4) Press 3 on the numeric keypad to enter sensor check mode. The image below will be displayed.

Figure 2-15

5) When the display shown in Figure 2-15 is displayed, push 1,2,3 and 4 on the numeric keypad.The status of each sensor will be displayed.The following is an example and explanation of what happens when you push 1 on the numeric keypad.

Figure 2-16

6) Move each sensor’s flag and verify that the display shows of (OFF)/on (ON) repeatedly. The following page shows the display and sensor name, and the status of each sensor when the main unit is in stand-by when keys 1-4 of the numeric keypad are pressed.

6-3 : SENSOR

[1] --- [7]

Sensor name

Sensor’s present status

DS of DES of DOC A4 CRG on DCVS on

Sensor’s present status

Sensor name

DS of means that the automatic document feeder’s (ADF) document sensor (DS) is off.

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-12

Figure 2-17

6-3:SENOR [1] - - - [7]

Press 1 on the numeric keypad

DS of DES of DOC A4 CRG on DCVS on

DS: document sensor* (PS801) :on/document present, off/no document DES: document edge sensor* (PS805):on/document present, off/no document DOC: document width sensor* (PS851, PS852): displays document width by combination of

the 2 sensor’s ON/OFF status CRG: toner cartridge sensor: on/of toner cartridge present/no toner cartridge DCVS: paper feed sensor: on/ paper is not detected (in stand-by, with the lower right cover closed)

*Displays the status of each ADF sensor

Press 2 on the numeric keypad

of/ paper is detected (in stand-by, with the lower right cover open)

HPS on RES on BCVS of NDFS of DLS0 of DLS1 of

HPS: scanner home position sensor: on/the scanner is in the home position RES: Not used

BCVS: copyboard cover open/close sensor (PS102): on/cover open, of/cover closed NDFS: document length sensor1* (PS802): on/document present, of/no document DLS0: document length sensor2* (PS803): on/document present, of/no document DLS1: Reserved *Displays the status of each ADF sensor

Press 3 on the numeric keypad

of/ the scanner is not in the home position

CT1 on A4 CT2 of CT3 on A4 CT4 on B4

CT1: main unit cassette paper sensor (PS305): on/paper present, of/no paper

main unit cassette paper size detection switch: displays paper size

CT2: level 1 cassette feeder paper sensor (PS651): on/paper present, of/no paper

level 1 cassette feeder paper size detection switch: displays paper size

CT3: level 2 cassette feeder paper sensor (PS651): on/paper present, of/no paper

level 2 cassette feeder paper size detection switch: displays paper size

CT4: level 3 cassette feeder paper sensor (PS651): on/paper present, of/no paper

level 3 cassette feeder paper size detection switch: displays paper size

Press 4 on the numeric keypad

MLT on A4 TN on RS of JAM of

MLT: multi-feeder paper sensor (PS501): on/paper present, of/no paper

Displays A4/set paper size. TN: toner sensor: on/toner remaining, of/no toner RS: Reserved JAM: jam detection status: on/jam detected, of/no jam detected

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-13

4. Image processor PCB replacement procedures

The procedures which must be performed when replacing the image processor PCB

are described below.

■ Procedures performed at the time of replacement

• For machines with a FAX function, output system data list, one-touch/speed dial/group dialing list, user data list, activity management report and system dump list.

• For machines with a FAX function, output all transmitted and received images.

• Turn off the power switch and remove jumper plug (JP3) before replacing the PCB.

• If additional memory has been added, remove the memory after removing jumper plug JP1 from the image processor PCB.

• Remove the ROM DIMM.

■ Procedures performed after replacement

• Install ROM DIMM.

• Install additional memory. When installing additional memory, do it when the jumper plug (JP1) is removed from the image processor PCB, or when it is in the OFF position.

• Set jumper plug JP1 to the ON position.

• Attach the jumper plug (JP3) that was removed prior to replacement of the PCB.

• Turn on the main unit power switch. If DATA ERROR is displayed, press the set key on the control panel.

• Input the user data and service mode data.

• See page 2-8. Perform automatic shading correction and image positioning adjustment.

When the jumper plug (JP3) is removed, all the data recorded in the control memory are erased. Accordingly, when the jumper plug (JP3) is to be removed, make sure the control data have been printed out.

•User data: data that are set when the user presses the control panel's entry/setting key

•Service mode data: setting data for the service mode

• Management data: activity management record (the previous 40 transactions), system dump record

Caution:

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2-14

C. ADF height adjustment

1. Height check

Measure the clearance at the locations indicated in the diagram to check that they meet the standard value.If the clearance length is outside the standard value, adjust the height.

Figure 2-18

Clearance A standard: 1.6 mm or more to less than 2.0 mm. Clearance B standard: 2.0 mm or more to less than 2.5 mm.

2.0mm or more

Less than 2.5mm

1.6mm or more

Less than 2.0mm

2-15

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2. Height adjustment

If the clearance is outside the standard, loosen the nut on the ADF hinge unit and

adjust with the adjusting screw.

When clearance A is outside the standard value, turn the adjusting screw on the left

hinge unit.

When clearance B is outside the standard value, turn the adjusting screw on the

right hinge unit.

Figure 2-19

Adjusting screw

Nut

Adjusting screw

Nut

Hinge unit

2-16

CHAPTER 2 STANDARDS AND ADJUSTMENTS

D. Skew feed adjustment

1. Checking ADF skew feed

Compare the surface position of the DF cover and DF delivery cover to make sure that the surface positions are correctly aligned.

Figure 2-20

Align the surface positions of the DF cover and the unit.

2-17

CHAPTER 2 STANDARDS AND ADJUSTMENTS

2. Adjusting skew feed

1) Loosen the right ADF hinge nut.

2) Use an Allen wrench to turn the adjusting screw and adjust ADF position.

3) After adjusting skew feed, tighten the nut to secure the adjusting screw.

Figure 2-21

Stay

Allen wrench

Right hinge

Nut

Adjusting screw

2-18

CHAPTER 2 STANDARDS AND ADJUSTMENTS

E. Adjusting image position

1. Checking image position

Check for image displacement of ADF copy and pressure plate mode copy.

1) Use A3 (297 × 420 mm) size plain paper (64 to 80 g/m2) and draw a straight line 10

mm from the paper edge on three sides of the paper to create a simple chart.

Figure 2-22

2) Place the chart on the copyboard glass and make a direct copy to A3 (297 × 420

mm) size paper.The delivered copy is sample A.

Figure 2-23

A3 size paper

10mm

Document

(rear side of document)

A3B4A4B5A5A3B5A5

B5 B4

+ 171 hidden pages

Canon GP-160, GP-160F, GP-160DF Service Handbook

CONTENTS

A. Main Unit

B. ADF

C. Basic servicing procedures

D. Cartridge storage and handling

A. Mechanical system

B. Electrical System

C. ADF height adjustment

D. Skew feed adjustment

E. Adjusting image position