Konica 7832 SERVICE HANDBOOK 7832fv3e

3. ADJUSTMENTS

NOTE

After the copier has exited the Service mode, be sure to turn OFF and ON the Power Switch to let the copier run an image stabilizer sequence.

3-1. JIGS AND TOOLS USED

(1) Tools for Setting-up and PM

Part No. 25TU00460 Part No. 11ZT00440

× 4

1144D228YA

Developer Chute

✽

Jumper Harness

Part No. 25TU00470 Part No. 25TU00450

× 4

1144D269YA

Mag. Roller Shield Fuser Oil Syringe

Part No. 25TU00330 Part No. 25TU00370

1154D209AA

Developer Collecting Bag & Box Rubber Tube

✽

Part No. 11UM01250

1: New jumper harness (Part No.

11ZT00440) can use both 7823 and

7832.

× 2

But current jumper harness (Part No. 11UM00440) can use only for 7823.

1154D217AA

1154D211AA

1154D216AA

1154D261AA

D-94

(2) Miscellaneous Jigs

Part No. 11ZT00540 Part No. 11ZT00040

1144D229AA

4002D503AA

Db Gap Adjusting Jigs Cable Holding Jigs

Part No. 25TU00400

Part No. 25TU00340

25TU00410

1144D235AA

1144D326AA

Scanner/Mirrors Carriage Positioning Jigs Transfer Adjusting Jig

Part No. 25TU00420 Part No. 25TU00350

1144D233AA

1144D231AA

AIDC Sensor Positioning Jig Interlock Switch Actuating Jig

D-95

3-2. ADJUSTMENT REQUIREMENTS FOR CLEANING/REPLACE-

MENT OF EACH PART

When any of the jobs listed in the Parts List column is performed (replacement or cleaning), make the adjustments in numerical order 1, 2, ...

Job Type Developer Change

Job item Developer

Check

Use jig. Use jig. Reference

Section

Parts List

Developing Unit replacement

Developer change 2 1 3 4 5 6 7

Ds rolls cleaning ––(1) (1) –––

Toner Scattering Preven tion Plate (M, C, Bk) cleaning

Toner Scattering Preven tion Seal 1 (Y) cleaning

Developing Unit

ATDC window replacement

ATDC Adj. Unit replacement

High Voltage Unit 4 replacement

PC Drum replacement ––12––3

PC Drum Charge Corona Assy replacement

PC Drum Charge Corona wire/grid cleaning/replacement

PC Drum Charge Corona housing cleaning

Cleaning Pad replacement

Main Erase Lamp cleaning

PC Unit and associated parts

AIDC Sensor cleaning ––12–– 3

Surface Potential Detection Sensor cleaning

Toner Scattering Preven tion Seal 2 cleaning

✽

(1) Check.

Developer

Filling

Discharge

1 – 23456

––(1) (1) –––

2134567

21345– 6

––––––1

AIDC Sensor adjust-

ment

voltage 4.0

±0.3V

AIDC Sen-

sor offset

level

adjustment

Auto

adjustment

ATDC Sen-

sor adjust-

5.0 ±0.2% After auto

ment

Bk unit-tounit vari a-

tions

adjustment

adjust-

ment,

check cor-

rection

value.

Gradation

Adjust

Run three

times.

D-96

Job Type Machine Adjust 2 Machine Adjust 1 Grada-

Job item IR Area Org.

Left

Top

Image

Refer-

ence

position 10 ±1 mm

CD-

Mag.

200

±1

Image

Section

Parts List

CCD Assy replacement 2 1 3 4 ––– – –5

Mirror/lens/Original Glass cleaning

Exposur e Lamp

replacement

Cable coming unwound 2 1 3 4 ––– – –5

Original Size Detecting Sensor replacement

PH Upper/Lower Assy replacement

Window 1 cleaning ––––– – – – – 1

Window 2 cleaning ––––– – – – – 1

Window 3 cleaning ––––– – – – – 1

Window 4 cleaning ––––– – – – – 1

Check

Lead-

ing

edge

0 ±1

––––– – – – – 1

––––1 –– – – –

6578– 34 1 2 9

FD-

Mag.

300

±1.5

Detect

Sensor

Check

OK after

adjust-

ment.

Top Margin Left Mar-

Image

Start

Position

5 ±0.25 mm0 ±0.5 mmVoid

auto

Lead Edge

Position

PRT Area

image on

left/right:

3 ±1.5

gin

Dup. Left

Margin

Void image on left/right:

3 ±1.5

tion

Adjust

Run

three

times.

D-97

Job Type Machine Adjust 1 Grada-

Job item PRT Area Jam Sen-

Section

Parts List

Transfer Unit replacement

Transfer Film replacement

Image Transfer Corona unit replacement

Image Transfer Corona wire cleaning/replacement

Image Transfer Corona housing cleaning

Paper Bonding Failure Detection Board 1 sensor cleaning

Paper Bonding Failure Detection Board 2 sensor cleaning

Transfer

Sensor Adj. Board replacement

High Voltage Unit 3 replacement

Pre-Image Transfer Corona Assy replacement

Pre-Image Transfer Corona Comb Electrode/grid cleaning/ replacement

Pre-Image Transfer Corona housing cleaning

Top Margin Left Mar-

Image

Start

Position

Check

5 ±0.25 mm0 ±0.5 mmVoid

45 2 3 1 ––6

–– – – – – – 1

–– – – 1 –––

–– – – – 1 ––

–– – – – – – 1

Lead Edge

Position

gin

image on

left/right:

3 ±1.5

Dup. Left

Margin

Void

image on

left/right:

3 ±1.5

adjust-

Point at

which

LED1 and

2 go out.

sor

ment

Transfer

Output

adjustment

Transfer out-

put should not be more or less than

required.

Feed Motor

Speed

adjustment

Color image

registration

deviation

within 0.5

dots

tion

Adjust

Run

three

times.

D-98

Job Type Machine Adjust 1 Grada-

Job item Transfer Out-

put adjustment

Check

Section

Parts List

Paper Take-Up/Feed Roll Assy cleaning/replacement

Paper Separator Roll cleaning/ replacement

Synchronizing Roller cleaning – 1 –––

Transport Roller cleaning – 1 –––

Paper take-up

Vertical Transport Roller cleaning – 1 –––

Copy paper not recommended 2 1 ––3

Fusing Unit replacement ––21–

Fusing Roller (Upper/Lower) replacement

Fusing Roller bushing (upper/ lower) replacement

Fusing Unit

Coil Collecting Blade cleaning/ replacement

Transfer output

should not be

more or less

than required.

– 1 –––

––21–

Feed Motor

Speed adjust-

ment

Color image

registration

deviation within

100 µm

Fuser Speed

adjustmen t

Magenta image

should not be

brushed or

blurred.

Fuser Nip

adjustment

8.5 ±0.3 mm at center; right-

left difference

0.5 mm

tion

Adjust

Run three

times.

D-99

Job Type Developer Change

Job item Developer

Check

Section

Parts List

Paper Take-Up Motor replacement

Fusing Motor replacement –– – – – –

PC Drum Drive Motor replacement

Control

RAM Pack replacement

Use jig. Use jig. Reference

Bk Developing Unit

Developer

Filling

Discharge

–– – – – –

Bk Developing Unit

only

AIDC Sensor adjust-

voltage 4.0

±0.3V

AIDC Sen-

ment

sor offset

level adjust-

Auto adjust-

456 3

ATDC Sen-

sor adjust-

ment

5.0 ±0.2% After auto

ment

Bk unit-to-unit

variations

adjustment

adjustment,

check correc-

tion valu e.

Job Type

Section

Parts List

Paper Take-Up Motor replacement

Fusing Motor replacement ––(1) ––

PC Drum Drive Motor replace-

Control

ment

RAM Pack replacement 7 ––––

✽

(1) Check.

Machine Adjust

Job item Org. Detect

Sensor adjust-

ment

Check

Check OK after

auto adjust-

ment.

– (1) –––

––(1) ––

Feed Motor

Speed adjust-

ment

Color image

registration

deviation within

100 µm

Machine Adjust 1

Fuser Speed

adjustment

Magenta image

should not be

brushed or

blurred.

Fuser Nip

adjustment

8.5 ±0.3 m m at

center; right-left

difference 0.5

Gradation

Adjust

Run three

times.

D-100

3-3. ADJUSTMENT OF SWITCHES

Adjusting screws

1179D071AA

1. Open the Front Door. Loosen the Front Door Interlock Switch assy adjusting screws.

2. If the Front Door Interlock Switch is in the deactuated position when the Front Door is closed, move the Front Door Interlock Switch assy to the front. If the Front Door Interlock Switch remains actuated because it is located too far forward, move the Front Door Interlock Switch assy towards the rear.

D-101

3-4. ADJUSTMENT OF SOLENOIDS

(1) Adjustment of the Transfer Drum Retract Solenoid

4. Transfer Drum Retract Assy

Fig. 1

1. Flywheel

3. Cover

Fig. 1 Transfer Drum Retract Solenoid Adjusting Procedure

1. Loosen the adjusting screw.

0 mm

2 ±1 mm

2. Manually move the solenoid into the energized position. The clear-

ance between pawl and ratchet should be 2 ±1 mm. At this time, allowing “0” clearance

between pawl and ratchet, secure the solenoid.

2. Paper Take-Up Board/Engine Power Supply Board Assy

1154D262AD

1 mm or more

0 mm

1144D196AA

1144D195AA

3. With the solenoid in the deenergized position, turn the ratchet.

4. The clearance between pawl and ratchet should be 1 mm or more when the clearance

between pawl and ratchet is “0” (the solenoid is in the deenergized position).

D-102

(2) Adjustment of the Static Charge Roller Solenoid

1. Transfer Unit cover

Static Charge Roller Solenoid Fig. 1

2. Synchronizing/Static Charge Roller Assy

Fig. 1 Static Charge Roller Solenoid Adjusting Procedure

1144D197AA

Static Charge Roller Solenoid

Adjusting screw

1. Loosen the adjusting screw.

Solenoid energized

Ratchet flat portion

Solenoid

2. Manually move the solenoid into

3. Secure the solenoid where the

4. Deenergized the solenoid and

Ratchet

Pawl

1144D198AA

tooth

1179D058AA

the energized position.

pawl engages halfway or more with a tooth, but is not in contact with the flat portion of the ratchet.

ensure that the tip of the pawl does not contact the ratchet tooth.

D-103

(3) Adjustment of the Paper Separator Finger Solenoid

Adjusting screw

High Voltage Unit 2 Assy

Fig. 1 Paper Separator Finger Solenoid Mounting Position

Screw position

Paper Separator Finger Solenoid Fig. 1

1154D259AA

1154D260AA

Slide the solenoid as far as it will go in the slot in the direction of the arrow before tightening the screws.

D-104

Paper Separator Finger Solenoid

(4) Adjustment of the Internal Fur Brush Solenoid, Backup Brush Solenoid, and

Lifting Finger Solenoid

Adjusting screw

Lifting Finger Solenoid Fig. 2

Internal Fur Brush Solenoid Fig. 1

Fig. 1 Internal Fur Brush Solenoid/ Backup Brush Solenoid Adjusting Procedure

1. Loosen the adjusting screw of the solenoid.

2. Adjust to obtain a clearance of 1 ±0.5 mm for the gap shown below when the solenoid is manually moved into the energized position.

1 ±0.5 mm

Backup Brush Solenoid Fig. 1

Adjusting screw

1154D257AA

Fig. 2 Lifting Finger Solenoid Adjusting Procedure

1. Loosen the adjusting screw of the solenoid.

2. Adjust to obtain a lift of 57 ±0.5 mm from the joint face for the Lifting Finger when the solenoid is manually moved into the energized position.

Lifting Finger

Arm

Manually move solenoid into energized position.

1144D201AA

Check for correct clearance when the spring is not stretched.

Amount of lift 57 ±0.5 mm

Mounting bracket

1154D258AA

D-105

(5) Adjustment of the Manual Feed Paper Pick-Up Solenoid

Manual Feed Paper PickUp Solenoid assy Fig. 1

Multi Bypass Table assy

1179D018AA

Fig. 1 Manual Feed Paper Pick-Up Solenoid Adjusting Procedure

1. Manually move the solenoid into the energized position.

2. Loosen the adjusting screws.

Lock lever

1075D155AA

1075D156AB

Paper Stopper

1075D157AB

3. Move the solenoid in the direction of arrow 1 and then move it slowly in the direction of arrow 2.

4. Move the solenoid to a position at which the Paper Stopper lock levers are in the upright position (at which the Paper Stoppers are locked). If the solenoid is moved too far, it will be released from the SET position. If it is released from the SET position, energize the solenoid and start the procedure over.

5. Tighten the two screws that secure the solenoid in position.

D-106

(6) Adjustment of the Oil Roller Solenoid

Adjusting screw

High Voltage Unit 2 assy

Fig. 1 Oil Roller Solenoid Adjusting Procedure

Rubber Ring

Oil Roller Solenoid Fig. 1

1154D255AA

Oil Roller Solenoid

1. Loosen the adjusting screws.

Oil Collecting Roller

Ratchet

Lever

1154D256AA

Roll

Flat spring

1144D207AA

2. Manually move the solenoid into the energized position and, where the clearance between the rubber ring of the Transfer Drum and the front and rear roll of the Oil Collecting Roller becomes “0,” secure the solenoid in position.

3. When the solenoid is manually energized and deenergized, it should click twice or more.

D-107

3-5. ADJUSTMENT OF BELT TENSION

Tip

A given tension is being applied to the torsion spring or tension spring fitted to the tension plate that keeps each timing belt taut. Simply loosening and tightening the mounting screw(s) therefore allows belt tension to be adjusted.

No. Driven Mechanism Adjusting Procedure

1 Developing Unit

2 Hopper

3 Paper Take-Up

4 Cleaning Unit

5 Scanner Drive

(Example) Adjustment of Hopper Unit Timing Belt Loosen the two tension plate mounting screws and then tighten them again.

Loosen one tension plate mounting screw and then tighten it again.

Loosen two tension plate mounting screws and then tighten them again.

Loosen one tension plate mounting screw and then tighten it again.

Loosen two tension plate mounting screws and then tighten them again.

Loosen three Scanner Motor assy mounting screws and then tighten them again.

D-108

1154D210AB

Timing Belt Locations (Viewing Copier from the Back)

Tensioning Direction

1179D059AA

D-109

3-6. TOUCH PANEL CORRECTION MODE

1. Press the following keys in this order to set the copier into the Touch Panel Correct mode: Stop → 0 → Stop → 3.

1144S009CA

1144S010CA

1144S012CA

1144S011CA

Basic Screen

2. Touch on screen 1.

NOTE

At this time, be sure to touch the exact center of . (The same is true with the following.)

3. Touch on screen 2.

4. Touch on screen 3.

5. Touch on screen 4.

D-110

3-7. SETTING MODE

1. Press the Utility key and then select “Meter Count” to open the Meter Count screen.

2. Press the following keys in this order to show the Service Mode Menu screen: Stop → 0

→

0 → Stop → 0 → 1.

3. Select “Setting 1.”

1179P439CA

(1) Manual Paper Width

1144D268AA

1154D075CA

1179P440CA

1. Place several sheets of A3 wide (305 mm × 457 mm) or 12 × 18 paper on the Multi Bypass Table.

2. Select “Manual Paper Width.”

3. Select “Maximum Size” and press the Start key. (This will start an automatic adjustment sequence.)

4. Remove the A3 wide (305 mm × 457 mm) or 12 × 18 paper from the Multi Bypass Table and, instead, place several sheets of B5 lengthwise or 5-1/2 × 8-1/2 paper on the table.

1144O013YA

D-111

5. Select “Minimum Size” and press the Start key. (This will start an automatic adjustment sequence.)

6. After the adjustments have been made, touch “Ex.”

1154D076CA

(2) OHP Speed

Adjustment

• If lines appear in the CD direction (paper separation failure), increase the setting value.

• If OHP transparency is low, decrease the setting value.

1. Select “OHP Speed.”

2. Change the setting value using the shift keys.

3. After the adjustments have been made, touch “Ex.”

1154D108CA

NOTE

Whenever a change is made in the Fuser Temp. setting under Machine Adjust 1, OHP Speed is automatically adjusted so that the OHP fusing efficiency does not change.

Paper

Fuser Temp.

155 °C 160 °C 165 °C

Standard Paper 168 mm/s

OHP 80 mm/s 90 mm/s 100 mm/s

Heavy Stock 2 70 mm/s

(3) A6 Card Margin (4 × 6 Paper Margin)

Given in ( ) is the function name for the inch areas.

1. Select “A6 Card Margin” or “4 × 6 Paper Margin.”

2. Change the setting value using the shift keys.

3. After the adjustments have been made, touch “Ex.”

Setting Range

Left Margin (void image width on right and left edges): 3 to 5 mm

1179P441CA

Top Margin (void image width on leading edge): 5 to 8 mm

D-112

3-8. MACHINE ADJUST MODE

1. Press the Utility key and then select “Meter Count” to open the Meter Count screen.

2. Press the following keys in this order to show the Service Mode Menu screen: Stop → 0

→

0 → Stop → 0 → 1.

3. Select “Machine Adjust 1” or “Machine Adjust 2.”

Machine Adjust 1

1179P443CA

1179P442CA

Machine Adjust 2

(1) Fuser Nip

NOTE

After Fuser Nip has been adjusted, Fuser Speed must also be adjusted.

1. Load any one of the drawers or the Multi Bypass Table with A4 crosswise or 8-1/2 × 11 crosswise paper.

2. Open the Front Door and slide out the Transfer Unit.

3. From the position where the Fusing Roller pressure adjusting screws are fully tightened, back

1144U017AA

them off four turns, while ensuring uniform pressure on the front and rear ends.

4. Slide the Transfer Unit back into the copier.

5. Close the Front Door.

1179P444CA

D-113

Reference

The Fusing Roller pressure adjusting screws can be adjusted by removing the Middle Left Cover.

1144D254AA

6. Select “Fuser Nip” from the “Machine Adjust 1” menu.

7. Press the Start key.

8. Measure the nip width at the front and rear ends of the copy fed out onto the Exit Tray.

9. If the measurement falls outside the specified range, turn the Fusing Roller pressure adjusting

1179P445CA

screws as necessary.

Specifications

Nip width: 8.5 ±0.3 mm Difference in nip width between front and rear: Within

0.5 mm

Adjustments

8.8 mm <: Loosen the adjusting screw.

8.2 mm >: Tighten the adjusting screw.

10. After the adjustments have been made, touch “Ex.”

D-114

(2) Fuser Speed

NOTES

1. This adjustment should be made after Fuser Nip has been adjusted.

2. A specific paper source and type of paper must be used for each type of paper available on the Touch Panel as follows.

• CF Paper: Load any of the drawers with A3 or 11 × 17 paper.

• Heavy Stock 2: Load the Multi Bypass Table with A3 or 11 × 17 paper weighing 129 to

209 g/m

• OHP Film: Load the Multi Bypass Table with A4 lengthwise or 8-1/2 × 11 lengthwise

paper.

3. Open the Front Door and remove the Transfer Unit cover.

4. Install the Interlock Switch Actuating Jig.

5. Select “Fuser Speed” and then “CF Paper.”

1179P446CA

6. Press the Start key and check to see if an adequate length of loop is formed before the Fusing Rollers.

1154D215AA 1154D212AA 1154D213AA

Retarded Correct Advanced

The loop length is too long causing the paper to have too much slack.

A good length of loop is formed as the paper moves into the Fusing Rollers.

No loop is formed causing the paper to be taut.

7. If the timing is advanced or retarded, change the setting of Fuser Speed.

Adjustments

Retarded: Increase the setting. Advanced: Decrease the setting.

8. Check the length of the loop again and repeat the

1179P447CA

above steps until a good length of loop is obtained.

D-115

1179P448CA

1179P449CA

9. Touch “Ex.” Twice to go back to the Service Mode Menu screen. Then, touch “Test Print” and then “Halftone” → “4 Color.”

10. Press the Clear key and enter “200” for TD (Test Data). Then, check the length of the loop before the Fusing Rollers and check the test print for “brush effect.”

11. If the loop length is long and “brush effect” is evident on the test print, increase the setting until “brush effect” disappears.

NOTE

If no “brush effect” is evident on the test print, no adjustments are necessary and steps 10 and 11 may be omitted.

12. Select “Cyan” for Test Print/Halftone.

13. Press the Clear key, enter “0” for TD (Test Data), and check the loop length before the Fusing Rollers.

14. Make the necessary adjustments for Heavy Stock 2 and OHP Film by following steps 4 through 6.

15. After the adjustments have been made, touch “Ex.”

(3) Fuser Temp.

1179P450CA

1. Select “Fuser Temp.” from the “Machine Adjust 1” menu.

2. Change the setting value using the shift keys.

Setting Range: 155 to 165 °C Initial Setting: 160 °C Step: 5 °C

1179P451CA

D-116

(4) AIDC Offset

NOTES

• This adjustment should not be made individually.

• It must be made as part of a series of operations run in Developer Change Mode.

(5) Transfer Output

1. Load a drawer with A3 or 11 × 17 paper.

2. From the Service Mode Menu, select “Test Print.” Then, select “Gradation Pattern” → “Cyan.” Now, press the Start key.

1179P452CA

3. Check the test print produced for the following.

1144D244AA1144D242AA

1144D243AA

Entire image has a lightly brushed effect with uneven, irregular low image density.

Even, high image density at the edges with lower density inside.

If the entire image has a heavily brushed effect, select “Copying Status” from “State Confirm” and press the Start key to check for T/C of each color of toner.

D-117

1154D086CA

1154D087CA

4. For Poor Image Transfer or Excessive Image Transfer, touch “Ex.” twice to return to the Service Mode Menu screen.

5. Select “Machine Adjust 1” and then “Transfer Output.”

6. Select “Normal” and “First” (image transfer number), in that order, and change the setting as necessary using the shift keys.

Adjustments

Excessive Image Transfer: Decrease the setting. Poor Image Transfer: Increase the setting.

7. Select again “Test Print” → “Gradation Pattern” → “Cyan” and then press the Start key.

8. Check the test print produced.

9. After the adjustment has been made, select “Transfer Output” again and, using the shift keys, set the same value as that for “First” of “Normal” for “Second,” “Third,” and “Fourth.”

10. Select “Test Print” → “Gradation Pattern” → “4 Color” and then press the Start key.

11. Make the final check on the test print produced.

12. If Poor Image Transfer or Excessive Image Transfer is evident on magenta, yellow, or black on the test print, make an independent setting for Second, Third, or Fourth.

1179P453CA

Transfer Output Order (Transfer Number)

First: Cyan Second: Magenta Third: Yellow Fourth: Black

13. Using these procedures, make adjustments for “2-Sided” and “OHP Film.”

14. After the adjustments have been made, touch “Ex.”

D-118

(6) Jam Sensor

1. Open the Front Door, remove the Transfer Unit cover, and then lock the Transfer Unit back into position.

2. Install the Interlock Switch Actuating Jig.

3. Select “Machine Adjust 1” and “Jam Sensor.” Then, press the Start key.

1144D284CA

4. After the Transfer Drum has stopped turning, turn RT1 on the Failure Sensor Adj. Board clockwise until LED1 (red) turns ON and then turn it counterclockwise until LED1 turns OFF.

LED2

LED1

RT1

RT2

RT1: LED1: S1: For sensor on Paper Bonding Failure Detection Board 2 RT2: LED2: S2: For sensor on Paper Bonding Failure Detection Board 1

5. If LED1 (red) does not light up in step 4:

LD1 LD2

1. Flip DIP switch S1-1 on the Failure Sensor Adj. Board to the OFF position and then perform step 4 again.

2. If LED1 does not still light up, flip DIP switch S1-1 to the ON position again and flip S1-2 to OFF. Then, perform

S1-1

S1-2

RT1

OFF

S2-1

RT2

S2-2

step 4 again.

3. If LED1 does not still light up, flip S1-1 to OFF and, with S1-2 in the OFF position, carry out step 4 again.

1179D060AB

For sensor on Paper Bonding Failure Detection Board 1 For sensor on Paper Bonding Failure Detection Board 2

D-119

1179D075AA

6. Turn RT2 on the Failure Sensor Adj. Board clockwise until LED2 (green) turns ON and then turn it counterclockwise until LED2 turns OFF.

7. If LED2 (green) does not light up in step 6, change the DIP switch S2 key positions as necessary to make an adjustment.

8. After the adjustment has been made, press the Stop key and touch “Ex.”

(7) Feed Motor Speed

<Normally> The amount of color overlay deviation between C and M is uniform throughout the entire print area. <When faulty> The amount of color overlay deviation between C and M varies from one point to another on the image.

NOTE

A specific paper source and type of paper must be used as detailed below according to the paper type selection made on the Touch Panel.

• CF Paper: Load the drawer with A3 or 11 × 17 paper.

• OHP Film: Place A4L or 8-1/2 × 11L OHP transparencies on the Multi Bypass Table.

• Heavy Stock 2: Place A3 or 11 × 17 paper weighing 129 to 209 g/m

on the Multi Bypass

Table.

1. Select “Feed Motor Speed” of “Machine Adjust

1.” Then, select “CF Paper” and “C → M → D.”

NOTE

Do not select “D → C → M → D.”

2. Press the Start key.

1179P454CA

3. Using a loupe, measure the amount of color overlay deviation of the test copy produced.

Specifications

m max.

100

Tip:

Check especially at the leading edge and at the center.

Leading Edge

Center

Feeding Direction

50 mm

200 mm

1179D073AB

D-120

Criteria

Deviation at Center, but not at Leading Edge: M (magenta) is relatively advanced → Feed Motor speed is faster. M (magenta) is relatively retarded → Feed Motor speed is slower.

Out-of-Phase Example:

Leading Edge

Center

C M C M

M C M C

1154D222AA

Criteria

→

Too slow

→

Too fast

4. If the specifications are not met, change the setting using the shift keys.

1179P455CA

5. Make a check again by making another test copy.

6. Using the same procedure, adjust for “OHP Film” and “Heavy Stock 2.”

7. After the adjustments have been made, touch “Ex.”

D-121

(8) PRT Area

Top Margin This function permits adjustments of the print start position (Image Start Position) on the paper which is not affected by the image signal sent from the IR and the point at which the paper is attracted onto the surface of the Transfer Drum (Lead Edge Position).

NOTES

• This adjustment should be made after Feed Motor Speed has been adjusted.

• Lead Edge Position must be adjusted before Image Start Position.

1. Load the drawer with A3 or 11 × 17 paper.

2. Select “PRT Area” of “Machine Adjust 1.”

3. Select “Top Margin” and then “Lead Edge Position.” Then, press the Start key.

4. After a misfeed message has appeared, open the Front Door.

1154D090CA

5. Slide out the Transfer Drum and measure the distance between the leading edge of the paper attracted to the drum and the white line on the Transfer Film.

Leading Edge Position

Standard: 0 ±0.5 mm

Paper

1154D199AB

Specifications

Distance between the leading edge of the paper attracted to the Transfer Drum and the white line on the Transfer Film: 0 ±0.5 mm

D-122

6. If the specifications are not met, slide the Transfer Unit back into the copier and close the Front Door.

NOTE

At this time, be sure to remove the paper, as the copier does not perform predrive.

1154D091CA

7. Select “Lead Edge Position” and change the setting using the shift keys.

Adjustments

+0.5 mm <: Increase the setting.

-0.5 mm >: Decrease the setting.

8. After the adjustment has been made, check the position of the leading edge of the paper attracted to the Transfer Drum three times.

9. Select “Image Start Position” and press the Start key.

10. After the misfeed message has appeared, open the Front Door.

1154D110CA

11. Slide out the Transfer Drum and measure the distance between the leading edge of the paper attracted to the drum and the white line on the Transfer Film.

White line

5 ±0.25 mm

Paper

Image Start Position Line

1179D077AA

Specifications

Distance between the image start position line on the paper and the white line on the Transfer Film: 5 ±0.25 mm

D-123

+ 197 hidden pages