Canon NP6621 How to use

PRINTED IN JAPAN (IMPRIME AU JAPON) 0398S1.21-1
FY8-23AT-000
FEB. 1998
COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
SERVICE
HANDBOOK
REVISION 0
SERVICE HANDBOOK
REVISION 0
CANON INC.
This publication is printed on
70% reprocessed paper.

Prepared by
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION
CANON INC.
Printed in Japan
REVISION 0 (FEB. 1998) (31625)
5-1, Hakusan 7-chome, Toride-shi Ibaraki, 302-0023 Japan
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.
ANYQUESTIONSREGARDINGINFORMATIONCONTAINEDHEREINSHOULDBEDIRECTED
TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.
COPYRIGHT © 1998 CANON INC.
Printed in Japan
Imprimé au Japon
Use of this manual should be
strictly supervised to avoid
disclosure of confidential
information.
Prepared by
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPARTMENT 1
OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIVISION
CANON INC.
5-1, Hakusan 7-chome, Toride-shi Ibaraki, 302-0023 Japan
COPYRIGHT © 1998 CANON INC. CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)

i
In this Handbook, work procedures are given in the form of tables instead of flow charts used generally.
Familiarize yourself by studying the example below.
EX. AC power is absent.
Guide To Tables
Cause
Power plug
Covers
Power source
Remedy
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.
Step
1
2
3
4
Checks
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)?
Yes/No
NO
NO
NO
YES
■To find out the cause (problem part) of a single problem, refer to the item under “Cause.” 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
“Remedy”; make checks, answer to the questions YES or NO, and provide remedies accordingly. If the
answer is otherwise, proceed to the next step.
YES
YES
YES
■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 (–).
<Step>
1
2
3
<Checks>
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?
<Yes/No>
NO
NO
NO
▼
▼
▼
<Remedy>
Connect the power
plug.
Close the door or
the cover.
The problem is not
of the copier. Advise
the customer as
such.
▼
▼
▼

ii

iii
CONTENTS
CHAPTER 1 MAINTENANCE AND INSPECTION
I. SERVICING CHART .................................1-1
II. PERIODICALLY REPLACED PARTS.......1-2
A. Periodically Replaced Parts ................1-2
III. DURABLES ...............................................1-3
A. Copier ..................................................1-3
B. Cassette Feeding Module-B2/
Cassette Feeding Module-A2/
Cassette Feeding Unit-K1 ...................1-4
C. Paper Deck Pedestal-K1 .....................1-4
IV. MAINTENANCE AND INSPECTION ........1-5
A. Image Adjustment Procedure..............1-5
B. Points to Note for Servicing Work .......1-6
1
2
3
4
5
6
7
8
CHAPTER 2 STANDARDS AND ADJUSTMENTS
14. Routing the Blanking Shutter Cable ....2-8
15. Adjusting the Lower Fixing Roller
Nip .......................................................2-8
16. Points to Note After Replacing
the Upper Fixing Unit...........................2-9
17. Mounting the Oil Application Solenoid ..2-9
18. Routing the Drive Belt .......................2-10
19. Positioning the Primary Charging
Roller Cleaning Solenoid...................2-11
20. After Replacing the Drum Unit...........2-12
21. Installing the Drum Heater.................2-12
22. Assembling the Mirror Positioning
Tool....................................................2-13
23. Positioning the Paper Deflecting
Plate Solenoid (SL8) .........................2-13
24. Setting the Deck Size ........................2-13
25. Adjusting the Deck Registration ........2-14
B. Electrical ..................................................2-15
1. Adjustment after Replacing PCBs.....2-15
2. Adjusting the Scanning Lamp
Intensity .............................................2-15
3. AE Adjustment...................................2-15
4. Multifeeder Paper Width Sensor
Adjustment.........................................2-19
5. Setting the Paper Size for the
Universal Cassette ............................2-20
6. Initializing the Back-Up RAM.............2-21
7. Checking the Photointerrupters.........2-21
A. Mechanical.................................................2-1
1. Adjusting the Image Leading
Edge Margin ([3], No.305;
registration ON timing).........................2-1
2. Adjusting the Leading Edge
Non-Image Width ([3], No.306;
blank shutter ON timing)......................2-1
3. Adjusting the Image Trailing
Edge Non-Image Width ([3], No.309;
blanking shutter timing) .......................2-2
4. Adjusting the Left/Right
Registration .........................................2-2
5. Adjusting the Left/Right Margin
(No.311 left/right margin
adjustment)..........................................2-3
6. Routing the Scanner Drive Cable........2-4
7. Adjusting the Mirror Position
(optical length between No.1mirror
and No.2/3 mirror) ...............................2-5
8. Adjusting the Scanner Cable
Tension................................................2-5
9. Orienting the Pick-Up Roller................2-5
10. Orienting the Multifeeder
Pick-Up Roller......................................2-6
11. Positioning the Multifeeder Assembly
Paper Guide Plate Cam ......................2-6
12. Positioning the Blanking
Shutter Solenoid ..................................2-7
13. Positioning the Change Solenoid ........2-7

iv
CHAPTER 3 IMAGE FAULTS
10. The copy has white spots (vertical). ..3-11
11. The copy has white lines (vertical). ...3-11
12. The copy has white spots
(horizontal).........................................3-12
13. The back of the copy is soiled. ..........3-13
14. The copy has a fixing fault.................3-14
15. The leading edge of the copy
is displaced........................................3-15
16. The leading edge of the copy
is displaced........................................3-15
17. The leading edge of the copy
is displaced........................................3-15
18. The copy has blurred images. ...........3-16
19. The copy has horizontal fogging. ......3-16
20. The copy has poor sharpness. ..........3-17
21. The copy is blank...............................3-18
22. The copy is solid black. .....................3-18
A. Initial Checks .............................................3-1
B. Samples of Image Faults...........................3-4
C. Troubleshooting Image Faults ...................... 3-5
1. The copy is too light (half-tone
areas only)...........................................3-5
2. The copy is too light (including
solid black)...........................................3-6
3. The copy is too light (overall,
extremely)............................................3-6
4. The copy has uneven density
(darker at front)....................................3-7
5. The copy has uneven density
(lighter at front). ...................................3-7
6. The copy is foggy (overall). .................3-8
7. The copy has vertical fogging..............3-9
8. The copy has black lines
(vertical, fuzzy, thick). ..........................3-9
9. The copy has black lines
(vertical, fine). ....................................3-10
CHAPTER 4 TROUBLESHOOTING MALFUNCTIONS
16. DC power is absent. ................................4-10
17. The blanking shutter fails to operate. ......4-10
18. The photosensitive drum fails to rorate. ..4-11
19. Pick-up operation fails (from cassette). ...4-11
20. Pick-up operation fails (multifeeder). .......4-12
21. The scanner fails to move forward/
in reverse. ................................................4-12
22. The registration roller fails to operate. .....4-13
23. The scanning lamp fails to turn ON. ........4-13
24. The lens fails to move..............................4-14
25. The fixing heater fails to operate. ............4-14
26. The pre-exposure lamp fails to turn ON. .4-15
27. The ADD PAPER message fails to turn
OFF..........................................................4-15
28. The JAM message fails to turn OFF........4-15
1. E000 ..........................................................4-1
2. E001 ..........................................................4-2
3. E002, E003 ................................................4-2
4. E004 ..........................................................4-3
5. E010 ..........................................................4-4
6. E064 ..........................................................4-5
7. E202 (The keys on the control panel are
locked.) ......................................................4-5
8. E210 ..........................................................4-6
9. E220 ..........................................................4-6
10. E240 ..........................................................4-6
11. E260 ..........................................................4-7
12. E261 ..........................................................4-7
13. E710, E711, E712, E717 ...........................4-8
14. E802 ..........................................................4-8
15. AC power is absent. ..................................4-9
CHAPTER 5 TROUBLESHOOTING FEEDING
FAULTS
A. Copy Paper Jams ......................................5-1
1. Pick-Up Assembly ...............................5-2
2. Separation/Feeding Assembly ............5-3
3. Fixing/Delivery Assembly ....................5-3
4. Duplexing Unit (during stacking
operation) ............................................5-4
5. Duplexing Unit (during re-pick
up operation) .......................................5-4

v
3. Double feeding (paper deck). ..............5-8
4. Wrinkling (paper deck).........................5-8
5. The ‘ADD PAPER’ message fails to
turn off (paper deck). ...........................5-9
6. The lifter fails to rise (paper deck). ....5-10
A. Sensors......................................................6-2
B. Clutches, Solenoids,
and Switches .............................................6-4
C. Motors, Heaters, and Lamps .....................6-6
D. PCBs..........................................................6-8
E. Cassette Feeding Module-A2 ..................6-10
F. Cassette Feeding Unit-K1 .......................6-12
G. Paper Deck Pedestal-K1 .........................6-14
H. Variable Resistors (VR) and
Check Pins by PCB. ................................6-16
CHAPTER 7 SERVICE MODE
E. Adjustment Mode (‘3’)..............................7-10
F. Operation/Inspection Mode (‘4’) ..............7-13
G. Machine Settings Mode (‘5’) ....................7-14
H. Counter Mode (‘6’) ...................................7-16
A. Outline .......................................................7-1
B. Using Service Mode ..................................7-1
C. Control Display Mode (‘1’) .........................7-3
D. I/O Mode (‘2’) .............................................7-6
CHAPTER 8 SELF DIAGNOSIS
A. Copier Self Diagnosis ................................8-1
B. Self Diagnosis on the Cassette Feeding
Unit ............................................................8-4
C. RDF/ADF Self Diagnosis ...........................8-5
D. Sorter Self Diagnosis.................................8-6
A. GENERAL TIMING CHART ..................... A-1
B. SIGNALS AND ABBREVIATIONS ........... A-2
C. GENERAL CIRCUIT DIAGRAM............... A-5
APPENDIX
D. SPECIFICATIONS.................................... A-7
I. Copier.................................................. A-7
II. Cassette Feeding Module-B2/
Cassette Feeding Module-A2/
Cassette Feeding Unit-K1 ................ A-11
III. Paper Deck Pedestal-K1 .................. A-11
E. SPECIAL TOOLS ................................... A-12
F. SOLVENTS/OILS ................................... A-13
CHAPTER 6 ARRANGEMENT AND FUNCTIONS OF
THE ELECTRICAL PARTS
B. Feeding Faults............................................5-5
1. Double Feeding ...................................5-5
2. Wrinkles...............................................5-5
C. Paper Deck ................................................5-6
1. Pick-up fails (from deck)......................5-6
2. Paper jams when pick-up is from the
paper deck...........................................5-7

vi

1–1
MAINTENANCE AND INSPECTION
CHAPTER 1 MAINTENANCE AND INSPECTION
I. SERVICING CHART
Caution:
Do not use solvents or oils other than those specified.
1
every
60,000 every year
every
20,000
: clean : replace ✩: lubricate : adjust : inspect or clean
every
100,000
Copyboard glass
Pick-up roller
Scanner rail
Transfer guide assembly
Feeding belt
Feeding assembly mount
Reflecting plate for original exposure
No. 1 through No. 6 mirrors
Lens
Dust-proofing glass
Clearner base
Drum support shaft
Charging roller
Charging roller cleaner
Static eliminator
Developing spacer
Upper fixing roller
Lower fixing roller
Separation claw (lower, upper)
Fixing inlet guide
Delivery guide/ tray
Fixing feeding spacer
Delivery spacer
Set-back roller
Re-pick-up roller
Parts
Side reflecting plate for
original exposure
Unit
External
Scanner drive
assembly
Pick-up
assembly
Feeding
assembly
Optical
assembly
Drum kit
Charging
assembly
Fixing
assembly
Delivery
assembly
Remarks
Use alcohol.
Use alcohol solution;
then, apply lubricant.
Use a moist cloth.
Use a blower brush; if
the soiling is excessive,
use alcohol.
Actual use of the drum
kit.
Use a cotton wad.
✩
Developing
assembly
Duplexing Use alcohol.
Use alcohol.
Use cleaning oil.
Use solvent.

1–2
MAINTENANCE AND INSPECTION
II. PERIODICALLY REPLACED PARTS
Someparts of the copier must be replaced on a periodical basis to ensure a specific level of performance;
replace them as indicated regardless of the presence of visible damage.
Plan the replacement to coincide with a scheduled visit.
A. Periodically Replaced Parts as of FEB. 1998
Life (copies)
100,000
Remarks
No.
1
Parts name
Static eliminator
Q’ty
1
Parts No.
FG5-2912-020
Note:
The above values are estimates only and subject to change based on the future data.

1–3
MAINTENANCE AND INSPECTION
Q’ty
2
2
1
1
1
1
1
1
1
1
4
4
1
1
1
2
1
1
Parts No.
FB3-8771-00P
FG5-6792-020
FB1-8581-000
FB2-2167-000
FH7-3271-000
FB3-4494-00P
FA0-0353-00P
FB2-2223-000
FG5-2928-140
FB2-2316-000
FB1-0301-000
FB1-7275-000
FG5-2891-000
FG5-3275-04P
FB2-3834-000
FB2-3825-00P
FG5-7012-00P
FC2-8902-00P
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
14-1
14-2
14-4
15
Parts name
Pick-up roller
Pick-up separation pad
Multifeeder pick-up roller
Multifeeder separation pad
Halogen lamp
Fixing cleaning roller
Oil-applying roller
Transfer roller
Upper fixing unit
Lower fixing roller
Upper fixing separation claw
Lower fixing separation claw
Pre-exposure lamp
Developing assembly
Developing cylinder
Side seal
Developing blade unit
Scanner cooling fan filter
III. DURABLES
Thepartsshowninthetablemayrequirereplacementbecauseofdeteriorationordamageovertheperiod
of warranty; replace them when they fail using the table as a guide.
A. Copier
Life (copies)
100,000
100,000
100,000
100,000
100,000
100,000
60,000
100,000
200,000
200,000
200,000
200,000
200,000
100,000
100,000
100,000
100,000
100,000
as of FEB. 1998
Remarks
See Note 1.
See Note 1.
See Note 1.
See Note 1.
Note:
1. The life represents the number of copies actually made using the part.
2. The above values are estimates only and subject to change based on future data.
Replace with
item 12 or
12-1 through
12-4.

1–4
MAINTENANCE AND INSPECTION
B. Cassette Feeding Module-B2/Cassette Feeding Module-A2/
Cassette Feeding Unit-K1 as of FEB. 1998
Life (copies)
100,000
100,000
Remarks
Actual usage
Actual usage
No.
1
2
Parts name
Pick-up roller
Pick-up separation pad
Q’ty
1 through 3
1 through 3
Parts No.
FB2-2251-000
FG5-3614-000
Note:
The above values are estimates only and subject to change based on future data.
as of FEB. 1998
C. Paper Deck Pedestal-K1
Life (copies)
100,000
100,000
100,000
100,000
Remarks
Rear
Front
No.
1
2
3
Parts name
Pick-up roller
Feeding roller
Separation roller
Q’ty
1
1
1
1
Parts No.
FF5-1220-000
FF5-1221-000
FB1-7061-000
FB1-7060-020
Note:
The above values are estimates only and subject to change based on future data.

MAINTENANCE AND INSPECTION
1–5
IV. MAINTENANCE AND INSPECTION
A. Image Adjustment Procedure
Pre-Checks
▼
▼
Make sure that all input
values of service mode [3]
are as indicated on the
label attached to the front
door; if different, correct
them.
Adjust pointer to
black dot on
panel.
▼
Clean the static eliminator. Is the density of gray scale
No. 8 optimum?
Is the density of gray scale
too high (dark)?
End the
adjust-
ment.
Optimum Density Adjustment
Turn the copy density
correction volume
(VR850) clockwise so
that No. 8 darkens.
(Note 2).
Turn the copy density
correction volume
(VR850) counterclock-
wise so that No. 8
lightens. (Note 2)
Make one copy.
NO
YES
NO
NO
YES
YES
Note 1:
ForNA-3(TestCharts),makesurethatNo.8on
thecopyisofthesamedensityasNo.4through
No. 7 of the charts.
Note 2:
A shift is made in the control of the developing
bias (DC component).
▼
Make two to three copies
in non-AE and at copy
density 5. (NA-3)
▼
Check the following:
1. density of gray scale
No. 8
2. presence/absence of
fogging in white back-
ground
▼
▼
▼
▼▼
▼
▼
▼
▼
Isthedensitycorrectionvol-
ume(VR850)ontheservice
switchPCBcenteredonthe
black dot?

MAINTENANCE AND INSPECTION
1–6
B. Points to Note for Servicing Work
Fixing/Delivery assembly
Item
Separation claws
Upper fixing
roller,lower
fixing roller
Paper guide plate
Tool/Solvent
MEK
Work/Remarks
Item Tool/Solvent Work/Remarks
Item Tool/Solvent Work/Remarks
Item Tool/Solvent Work/Remarks
Cleaning
Cleaning
Cleaning
Cleaning oil
(TKN-0464 )
MEK
Duplexing unit
Re-pick up roller
Set-back roller Alcohol Alcohol Cleaning Cleaning
Cleaning
Cleaning
Cleaning
Feeding assembly, Static eliminator
Static eliminator
Transfer guide
Feeding belt,
Feeding assembly
mount, Transfer
charging assembly,
Rail
Moist cloth (Note)
Special brush
Moist cloth (Note)
Note:
Make sure no droplets of water remain; if any,
do not turn on the power.
Copyboard, Scanner
Item Tool/Solvent Work/Remarks
Copyboard glass
Scanning lamp
Reflecting plate
No. 1 though
6 mirrors
Alcohol
Lint-free paper
Blower brush
Cleaning
Dry wiping
If excessive, dry wiping
with lint-free paper
Optical path
Lens
Dust-proofing
glass
Blower brush
Blower brush Cleaning Cleaning

2–1
STANDARDS AND ADJUSTMENTS
CHAPTER 2 STANDARDS AND ADJUSTMENTS
A. Mechanical
1 Adjusting the Image Leading
Edge Margin ([3], No. 305;
registration ON timing)
Select service mode ([3] No. 305; leading edge
margin adjustment). Make adjustments so that the
imagepositionis asindicatedin Figure2-200 when
the Test Chart is copied in DIRECT.
2 AdjustingtheLeadingEdgeNon-
Image Width ([3], No. 306; blank
shutter ON timing)
Select service mode ([3] No. 306; leading edge
non-image width), and make adjustments so that
theleading edgenon-imagewidth isasindicated in
Figure 2-201 when the Test Sheet is copied in
DIRECT.
The machine adjusts the leading edge non-
imagewidthtakingadvantageofthetimingatwhich
the blanking shutter closes.
You must make this adjustment whenever you
have replaced the blanking shutter solenoid or the
blank exposure assembly.
Leading Edge Non-Image Width
2
Figure 2-200
Making Adjustments
1) Choose service mode [3], and select No. 305
using the numeric keypad.
• The copy count display flashes ‘No. 305’.
2) Press the Start key.
• The display flashes the present value.
• If the value is negative, ‘%’ is flashed.
To enter a negative value, press the % key,
and then enter the value using the numeric
keypad.
4) Press the AE key.
• The value is stored and the display remains
ON.
• Copying starts when the start key is pressed.
5) To enter a value once again, repeat steps 1)
and 4).
6) Press the Clear key to return to item selection.
The following is the relationship between the
settings and the image positions:
• For each ‘1’, the image position changes by
about 0.27 mm.
• For a ‘+’, the image position advances.
Figure 2-201
Reference:
In enlargement/reduction mode, 6 mm or less.
Making Adjustments
1) Select service mode ([3] No. 306).
• The copy count display flashes ‘No. 306’.
2) Press the Start key.
3) Change the setting using the numeric keypad.
• The display flashes the present value.
• If the value is negative, ‘%’ is flashed.
To enter a negative value, press the % key,
and then enter the value using the numeric
keypad.
4) Press the AE key.
• The value is stored and the display remains
ON.
• Copying starts when the start key is pressed.
5) Toenteravalueonceagain,repeatsteps1)and
2).
2.5±1.5mm
2.5±1.5mm

2–2
STANDARDS AND ADJUSTMENTS
6) Press the Clear key to return to item selection.
The following is the relationship between the
settings and the image positions:
• For each ‘1’, the image position changes by
about 0.27 mm.
• For a ‘+’, the leading edge non-image width
increases.
3 Adjusting the Image Trailing
Edge Non-Image Width ([3] No.
309; blanking shutter timing)
Trailing Edge Non-Image Width
• For each ‘1’, the image position changes by
about 0.27 mm.
• For a ‘+’, the trailing edge non-image width
decreases.
4 Adjusting the Left/Right Regis-
tration
Make adjustments so that the image position is
asindicatedinFigure2-204whentheTestSheetis
copied in DIRECT.
a. Pick-Up from the Cassette
Turn the screw qshown in Figure 2-203 to
adjust the position of the cassette hook.
standard: 0 ±1.5 mm
CW turn: moves the paper in the direction of
(–) shown in Figure 2-204.
CCW turn: moves the paper in the direction of
(+) indicated in Figure 2-204.
Figure 2-202
Select service mode ([3] No. 309; leading edge
non-image width adjustment), and make adjust-
ments so that the image trailing edge non-image
width is as indicated in Figure 2-202 when the Test
Sheet is copied in DIRECT.
The machine adjusts the image trailing edge
non-image width by taking advantage of the timing
at which the blanking shutter opens.
Making Adjustments
1) Select service mode ([3] No. 309).
• The copy count display flashes ‘No. 309’.
2) Press the Start key.
3) Change the setting using the numeric keypad.
• The display flashes the value.
• If the value is negative, ‘%’ is flashed.
To enter a negative value, press the % key,
and then enter the value using the numeric
keypad.
4) Press the AE key.
• The value is stored and the display remains
ON.
• Copying starts when the start key is pressed.
5) To enter a value once again, repeat steps 1)
and 2).
6) Press the Clear key to return to item selection.
The following is the relationship between the
settings and the image positions:
Figure 2-203
Figure 2-204
2.5±
1.5mm
q
(-) (+)
0±1.5mm
0
2
4
6
8
10

2–3
STANDARDS AND ADJUSTMENTS
b. Pick-Up from the Multifeeder
Loosen the screw q, and move the position of
the tray so that the measurement is 0 ±1.5 mm.
Figure 2-205
c. Duplexing Pick-up
Start service mode (No. 329), and make adjust-
ments so that the measurement (Figure 2-204) is 0
±1.5 mm.
Unit: 0.27 mm
5 Adjusting the Left/Right Margin
(No. 311 left/right margin adjust-
ment)
Select service mode (No. 311 left/right margin
adjustment),andmakeadjustmentssothattheleft/
right margin is 2.5 ±1.5 mm when the Test Sheet is
copied in DIRECT.
You must first adjust the “left/right registration”
before making this adjustment.
Making Adjustments
a. Margin (adjusting the width)
1) Select service mode ([3] No. 311).
2) Press the Start key.
3) Enter the new setting using the numeric key-
pad.
• If the value is negative, ‘%’ is flashed.
To enter a negative value, press the % key,
and then enter the value using the numeric
keypad.
The following describes the relationship be-
tween the settings and the margin:
• Foreach‘1’inthesetting,themarginchanges
to the side by about 0.37 mm.
• The settings may be between 0 and 15 mm.
• ‘+’ increases the margin.
• ‘-’ decreases the margin.
Figure 2-206
b. Adjusting the Position of the Left/Right
Margin
Turn the blanking adjusting screw on the ma-
chinefrontsideplateshowninFigure 2-207 so that
the dimension is as specified:
CW: moves the margin to the front.
CCW: moves the margin to the rear.
full turn: moves the margin by about 1 mm.
Figure 2-207
Figure 2-208
Note:
For both a. and b., turn ON and OFF the power
switch after making the adjustments or try a
different reproduction ratio to move the home
position of the blank exposure assembly.
q
Shutter Adjust the distance between the
two shutters in the blanking
assembly.
q
Shutter The entire shutters are
shifted.

2–4
STANDARDS AND ADJUSTMENTS
6 Routing the Scanner Drive Cable
Route the cable as indicated by the numbers q through !1, and perform “Adjusting the Cable tension”
and “Adjusting the Mirror Position” as described.
Figure 2-210
Figure 2-209
Caution:
Pay attention to the direction of the wire spring when installing the cable spring. (Follow the illustrations
given below.) Installing the spring in the wrong direction can cause the hook tip of the spring to interfere
with the cable.
Screw
Loosen the
screw,and shift
it down.
Re-tighten
the screw.
Attach the mirror
positioning tool.
Set screws
Loosen the set
screws to enable
free rotation.
Put the steel ball
into the hole in
the pulley; wind
the cable nine
times toward the
inside, and four
times toward the
outside; then, snap
on the pulley clip.
Pulley clip
Steel ball
34±1mm
o
y
u
r
!1
t
q
!0

w
e
i
Hook Hook
Cable Cable
(front) (rear)
Cable spring Cable spring

2–5
STANDARDS AND ADJUSTMENTS
5) Install the metal fixing of the scanner cable to
the No. 1 mirror mount using two screws e
(both front and rear).
7 AdjustingtheMirrorPosition(op-
ticallength betweenNo.1 mirror
and No. 2/3 mirror)
1) Keep the mirror positioning tool at hand.
2) Move the No. 1 mirror mount in the forward
direction, and match the angular hole in the
front side plate and the cable fixing screw q.
Figure 2-211
3) Loosen the set screw on the pulley.
4) Attachthe mirrorpositioningtoolwtothe No.1
mirror mount and the No. 2 mirror mount (both
front and rear).
(front) (rear)
Figure 2-212
Figure 2-213
6) Tighten the set screw of the pulley.
7) Remove the tool (FY9-3009).
8 Adjusting the Scanner Cable
Tension
Pull the tension spring so that both ends of the
cable spring qis 34 ±1 mm, and tighten the screw
w.
Figure 2-214
qw
34±1mm
9 Orienting the Pick-Up Roller
When installing the pick-up roller q, make sure
thatthe face indicatedin Figure 2-215 istoward the
rear.
Figure 2-215
wq
q
(front) (rear)
Mirror positioning tool (front) Mirror positioning tool (rear)
(front)(front)
e
(front) (rear)

2–6
STANDARDS AND ADJUSTMENTS
10 Orienting the Multifeeder Pick-
Up Roller
Wheninstallingthemultifeederpick-uprollerq,
make sure that the side with a cross won its collar
is toward the rear.
Figure 2-217
Figure 2-216
11 Positioning the Multifeeder As-
sembly Paper Guide Plate Cam
Temporarily fix the screw with a hex nut of the
spring clutch assembly in place, and rotate the
control ring. At this time, i.e., while the claw of the
control ring is engaged with the solenoid plate,
make adjustments so that the hole (or black dot) in
the cam and the hole in the multifeeder drive unit
match; then, tighten the part in place.
(front)
q
w
Caution:
Iftheadjustingholeisnotfurnishedwithablack
dot for reference, make adjustments as
instructed while making sure that the paper
guide plate cam of the multifeeder assembly is
located as shown.
Figure 2-218
Holes (or hole and black dot) matched
Horizontal line
Screw w/hex nut
Control ring
Gear
Claw
Solenoid plate
Gear
Paper guide plate cam
130.5±0.5mm
Paper guide
plate cam
Hole