Ricoh A163 User manual

001317MIU
RICOH GROUP COMPANIES
SERVICE MANUAL
A163/A251/A252
B047/B048

SERVICE MANUAL
A163/A251/A252/B047/B048
RICOH GROUP COMPANIES
®
®

A163
FIELD SERVICE
MANUAL
001317MIU

It is the reader's responsibility when discussing the information contained within this
document to maintain a level of confidentiality that is in the best interest of Ricoh
Corporation and its member companies.
NO PART OF THIS DOCUMENT MAY BE REPRODUCED IN ANY
FASHION AND DISTRIBUTED WITHOUT THE PRIOR
PERMISSION OF RICOH CORPORATION.
All product names, domain names or product illustrations, including desktop images,
used in this document are trademarks, registered trademarks or the property of their
respective companies.
They are used throughout this book in an informational or editorial fashion only and for
the benefit of such companies. No such use, or the use of any trade name, or web
site is intended to convey endorsement or other affiliation with Ricoh products.
2000 RICOH Corporation. All rights reserved.

The Service Manual contains informatio
n
regarding service techniques, procedures,
processes and spare parts of office equipmen
t
distributed by Ricoh Corporation. Users of thi
s
manual should be either service trained o
r
certified by successfully completing a Rico
h
Technical Training Program.
Untrained and uncertified users utilizin
g
information contained in this service manual t
o
repair or modify Ricoh equipment risk persona
l
injury, damage to property. or loss of warrant
y
protection.
Ricoh Corporation
WARNING

LEGEND
COMPANY
PRODUCT CODE GESTETNER RICOH SAVIN
A163 N/A FW740 N/A
A251 N/A FW750 N/A
A252 N/A FW760 N/A
B047 N/A FW770 N/A
B048 N/A FW780 N/A
DOCUMENTATION HISTORY
REV. NO. DATE COMMENTS
*Original Printing
1 5/95 Revised Pages
2 5/96 Reprint
3 6/98 A251/A252 Addition
4 8/2001 B047/B048 Addition

IMPORTANT SAFETY NOTICES
PREVENTION OF PHYSICAL INJURY
1. Before disassembling or assembling parts of the copier and peripherals,
make sure that the copier power cord is unplugged.
2. The wall outlet should be near the copier and easily accessible.
3. Note that some components of the copier and the peripherals are supplied
with electrical voltage even if the main switch is turned off.
4. If any adjustment or operation check has to be made with exterior covers off
or open while the main switch is turned on, keep hands away from electrified
or mechanically driven components.
5. The inside and the metal parts of the fusing unit become extremely hot while
the copier is operating. Be careful to avoid touching those components with
your bare hands.
6. The copier is not attached to the table. Pushing the copier too hard may
cause it to drop onto the floor. While moving the copier, push the table.
7. When the main switch is turned on, the machine will suddenly start turnig to
perform the developer initialization. Keep hands away from any mechanical
and electrical components during this period.
HEALTH SAFETY CONDITIONS
1. Never operate the copier without the ozone filters installed.
2. Always replace the ozone filters with the specified ones at the specified
intervals.
3. Toner and developer are non-toxic, but if you get either of them in your eyes
by accident, it may cause temporary eye discomfort. Try to remove with eye
drops or flush with water as first aid. If unsuccessful, get medical attention.
a

OBSERVANCE OF ELECTRICAL SAFETY STANDARDS
1. The copier and its peripherals must be installed and maintained by a
customer service representative who has completed the training course on
those models.
2. Caution: The RAM pack on the main control board has a lithium battery
which can explode if replaced incorrectly. Replace the RAM pack only with an
identical one. The manufacturer recommends replacing the entire RAM pack.
Do not recharge or burn this battery. Used RAM packs must be handled in
accordance with local regulations.
SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL
1. Do not incinerate the toner cartridge or the used toner. Toner dust may ignite
suddenly when exposed to open flame.
2. Dispose of used toner, developer, and organic photoconductors according to
local regulations. (These are non-toxic supplies.)
3. Dispose of replaced parts in accordance with local regulations.
4. When keeping used RAM packs in order to dispose of them later, do not put
more than 100 RAM packs per sealed box. Storing larger numbers or not
sealing them apart may lead to chemical reactions and heat build-up.
b

Table of Contents
OVERALL MACHINE INFORMATION
1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
COMPONENT LAYOUT AND DESCRIPTIONS
1. PAPER PATH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2. DRUM PROCESSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
3. MECHANICAL COMPONENT LAYOUT. . . . . . . . . . . . . . . . . . . . . 2-4
4. DRIVE LAYOUT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
5. ELECTRICAL COMPONENT DESCRIPTIONS . . . . . . . . . . . . . . . 2-7
INSTALLATION
1. ENVIRONMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
1.1 MINIMUM SPACE REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
1.2 MACHINE LEVEL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
1.3 POWER SOURCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
1.4 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
1.5 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
1.6 INSTALLATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
SERVICE TABLES
1. PREVENTIVE MAINTENANCE SCHEDULE . . . . . . . . . . . . . . . . . 4-1
1.1 PM TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
1.2 REGULAR PM PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
2. SERVICE TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
2.1 TEST POINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
2.2 VARIABLE RESISTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
3. SERVICE TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
3.1 SERVICE PROGRAM MODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
3.1.1 Service Program Mode Access Procedure. . . . . . . . . . . . . . . . . . . . . . . . 4-8
3.1.2 Service Program Mode Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
3.2 INPUT/OUTPUT CHECK MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
FSM i A163

3.2.1 INPUT/OUTPUT CHECK MODE ACCESS PROCEDURE . . . . . . . . . . 4-27
3.2.2 INPUT CHECK MODE TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
3.2.3 OUTPUT CHECK MODE TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29
3.3 POWER ON INITIAL SETTING MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
4. JAM CODE LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
4.1 ACCESS PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
4.2 JAM CODE TABLE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
5. SPECIAL TOOLS AND LUBRICANTS . . . . . . . . . . . . . . . . . . . . . 4-33
6. SERVICE REMARKS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
6.1 DRUM UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
6.1.1 Drum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-34
6.2 CHARGE CORONA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-35
6.3 OPTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
6.4 DEVELOPMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-36
6.5 TRANSFER AND SEPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
6.6 CLEANING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
6.7 FUSING UNIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-38
6.7A PRESSURE ROLLER EVALUATION PROCEDURE . . . . . . . . . . . . . . . . . 4-38
6.8 ORIGINAL FEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
6.9 PAPER FEED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
6.10 ROLL FEEDER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
6.11 OTHERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
REPLACEMENT AND ADJUSTMENT
1. EXTERIOR COVERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
1.1 LEFT SIDE COVER REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
1.1.1 Left Upper Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
1.1.2 Left Lower Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
1.2 RIGHT SIDE COVER REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
1.2.1 Right Upper Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
1.2.2 Right Lower Front, Right Lower Middle, and Right Lower Rear Covers . . 5-1
1.3 REAR COVER REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
1.3.1 Rear Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
2. OPTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
2.1 ORIGINAL FEED UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Rev. 9/27/96
A163 ii FSM

2.2 EXPOSURE GLASS REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
2.3 EXPOSURE LAMP REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
2.4 FIBER OPTICS ARRAY REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
2.5 LIGHT SENSOR REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
3. DEVELOPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
3.1 DEVELOPMENT UNIT REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
3.2 DEVELOPER REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
3.3 TONER DENSITY SENSOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . 5-9
3.4 PTL REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
3.5 DEVELOPMENT BIAS VOLTAGE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . 5-11
3.5.1 Bias Voltage for Image Area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
3.5.2 Bias Voltage for Non-image Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
4. DRUM UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
4.1 DRUM UNIT REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13
4.2 DRUM REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
4.3 CLEANING BLADE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15
4.4 CHARGE CORONA UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
4.5 CHARGE CORONA WIRE REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . 5-17
4.6 PICK-OFF PAWL UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
4.7 GRID VOLTAGE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
4.8 DRUM CURRENT ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
4.8.1 Charge Current Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22
4.8.2 Transfer Current Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
4.8.3 Separation Current Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
5. FUSING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
5.1 FUSING UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
5.2 HOT ROLLER REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
5.3 PRESSURE ROLLER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29
5.4 PRESSURE ROLLER THERMISTOR REPLACEMENT . . . . . . . . . . . . . . . . 5-30
5.5 PRESSURE ROLLER STRIPPER UNIT REPLACEMENT . . . . . . . . . . . . . . 5-30
5.6 HOT ROLLER STRIPPER UNIT REPLACEMENT . . . . . . . . . . . . . . . . . . . . 5-30
5.7 HOT ROLLER THERMISTOR REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . 5-31
5.8 FUSING THERMOFUSE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
5.9 FUSING TEMPERATURE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32
6. T & S CORONA UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
FSM iii A163

6.1 T & S CORONA UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
6.2 TRANSFER AND SEPARATION CORONA WIRE REPLACEMENT . . . . . . 5-34
6.2.1 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34
6.2.2 Separation Corona Wire Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35
6.2.3 Transfer Corona Wire Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35
7. OTHERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-36
7.1 OZONE FILTER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-36
7.2 ANTICONDENSATION HEATER INSTALLATION . . . . . . . . . . . . . . . . . . . . 5-37
8. COPY QUALITY ADJUSTMENT. . . . . . . . . . . . . . . . . . . . . . . . . . 5-38
8.1 LIGHT SENSOR ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-39
8.2 IMAGE BIAS ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-40
8.3 TONER DENSITY ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41
8.4 REGISTRATION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41
TROUBLESHOOTING
1. COPY QUALITY TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . 6-1
1.1 LOW IMAGE DENSITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
1.2 UNEVEN COPY IMAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
1.3 DIRTY BACKGROUND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
1.4 BLACK LINE OR BAND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
1.5 ENTIRELY BLANK COPY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
1.6 PAPER CREASING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
2. SERVICE CALL CONDITION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
2.1 SC Code E-1: Exposure Lamp Abnormal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
2.2 SC Code E-2: Fusing Thermofuse Open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
2.3 SC Code E-3: Hot Roller Thermistor Open. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
2.4 SC Code E-4: Hot Roller Thermistor Short. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
2.5 SC Code E-5: Pressure Roller Thermistor Open . . . . . . . . . . . . . . . . . . . . . . . 6-8
2.6 SC Code E-6: Pressure Roller Thermistor Short . . . . . . . . . . . . . . . . . . . . . . . 6-9
2.7 SC Code E-7: Fusing Overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
2.8 SC Code E-8: Fusing Warm-up Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
2.9 SC Code E-9: Toner Density Sensor Abnormal . . . . . . . . . . . . . . . . . . . . . . . 6-10
2.10 SC Code E-10: Main Motor Abnormal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
2.11 SC Code E-11: Toner Density Sensor adjustment Error . . . . . . . . . . . . . . . 6-11
A163 iv FSM

3. BLOWN FUSE TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
3.1 POWER SUPPLY UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-12
ROLL FEEDER
1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
2. MECHANICAL COMPONENT AND DRIVE LAYOUT . . . . . . . . . 7-2
3. ELECTRICAL COMPONENT DESCRIPTIONS . . . . . . . . . . . . . . . 7-3
4. MECHANICAL OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
4.1 BASIC OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
4.2 CUTTER UNIT OPENING AND CLOSING MECHANISM . . . . . . . . . . . . . . . 7-6
4.3 CUTTER OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
5. SERVICE TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
5.1 TEST POINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
5.2 BLOWN FUSE CONDITION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
6. INSTALLATION PROCEDURE. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
7. REPLACEMENT AND ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . 7-16
7.1 EXTERIOR COVER REMOVAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
7.1.1 Front Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
7.1.2 Left and Right Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
7.2 CUTTER UNIT REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17
7.3 PAPER FEED ROLLER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
7.4 PAPER FEED MOTOR TIMING BELT TENSION ADJUSTMENT . . . . . . . . 7-19
7.5 CUT LENGTH ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
7.5.1 Preset Cut : Adjustment standards: ±3 mm (for length shorter than 420 mm)
±5 mm (for 420 to 1189 mm)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
7.6 ROLL FEED PAPER SKEW ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . 7-21
FSM v A163