Ricoh Aficio IS420 User manual
IMAGE SCANNER IS420
[HS-1P]
SERVICE MANUAL
Ricoh Co., Ltd.
October 1995
i. Important Information
This equipment has been tested and found to comply with the limits for a Class A digital de-
vice, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial envi-
ronment.
This equipment generates, uses, and can radiate radio frequency energy and if not installed
and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful in-
terference in which case the user will be required to correct the interference at his own ex-
pense.
This Digital Apparatus does not exceed the Class Alimits for Radio Frequency noise from
Digital Apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites ap-
plicables aux appareils numériques de la class Aprescrites dans le Règlement sur le brouil-
lage radioélectrique édicté par le ministère des Communications du Canada.
Hiermit wird bescheinigt, daß dieses Gerät in Übereinstimmung mit den Bestimmungen der
Verfügung Nr. 1046 des Amtsblatts Nr.163/1984 funkentstört ist.
Installing the Interface Connector
The use of cables other than the shielded I/O cables or equivalent specified will invalidate the
certification of this Scanner and may cause interference levels which exceed the limits estab-
lished for this equipment.
Safety Information
The input voltage to the PSU (Power Supply Unit) can be either 100~120 Vac or 220~240
Vac, without any adjustment. Make sure that the above voltage is used.
The power cord should be an approved type, in accordance with the regulations for the coun-
try in which the scanner is used.
Introduction
The equipment described in this manual is a flatbed scanner with an automatic document
feeder, capable of scanning documents up to A3 in size. This user’s manual explains how to
use and maintain the scanner. Before using the scanner, please read this manual completely
to be aware of how to assure maximum system performance and service life.
Warning concerning copyright
Many documents are copyrighted. Such documents may not be reproduced by scanning or in
any other form without the express permission of the copyright holder.
Notice
This manual may not be copied in whole or in part without express written permission.
The contents of this manual are subject to change without notice.
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 paper tray unit 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.
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.
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.
– CAUTION –
2. The RAM pack on the main control board has a lithium battery which can
explode if replaced incorrectly. Replace the battery only with an identical
one. The manufacturer recommends replacing the entire RAM board. Do
not recharge or burn this battery. Used batteries 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 photoconductor according
to local regulations. (These are non-toxic supplies.)
3. Dispose of replaced parts in accordance with local regulations.
4. When keeping used lithium batteries in order to dispose of them later, do
not put more than 100 batteries per sealed box. Storing larger numbers or
not sealing them apart may lead to chemical reactions and heat build-up.
LASER SAFETY
The Center for Devices and Radiological Health (CDRH) prohibits the repair
of laser-based optical units in the field. The optical housing unit can only be
repaired in a factory or at a location with the requisite equipment. The laser
subsystem is replaceable in the field by a qualified Customer Engineer. The
laser chassis is not repairable in the field. Customer engineers are therefore
directed to return all chassis and laser subsystems to the factory or service
depot when replacement of the optical subsystem is required.
WARNING:
Use of controls, or adjustment, or performance of procedures other than
those specified in this manual may result in hazardous radiation exposure.
WARNING FOR LASER UNIT
Turn off the main switch and standby switch before
attempting any of the procedures in the Laser Unit
section. Laser beams can seriously damage your eyes.
WARNING:
CAUTION MARKING:
Adobe, PostScript, and the PostScript logo are registered trademarks of Adobe Systems, Inc.
Macintosh and TrueType are registered trademarks of Apple Computer, Inc.
Centronics is a registered trademark of Centronics Data Computer Corporation.
Hewlett-Packard, HP, LaserJet, and PCL is a registered trademark of Hewlett-Packard.
Resolution Enhancement is a trademark of Hewlett-Packard.
Intel is a registered trademark of Intel Corporation.
IBM, IBM PC, and PS/2 are trademarks of International Business Machines Corporation ITC
Avant Garde, ITC Zapf Chancery, ITC Zapf Dingbats, and ITC Bookman are registered
trademarks of International Typeface Corporation.
Times, Helvetica, and Palatino are registered trademarks of Linotype AG and/or its
subsidiaries
Lotus and 1-2-3 are registered trademarks of Lotus Development Corporation.
Microsoft is a U.S. registered trademarks of Microsoft Corporation.
Microsoft Word, MS-DOS, and Windows are registered trademarks of Microsoft Corporation.
Arial, Monotype, and Times New Roman are registered trademarks of The Monotype
Corporation PLC.
WordPerfect is a trademark of WordPerfect Corporation.
Intellifont is a trademark of Miles, Inc.
Information in this document is subject to change without notice and does not represent a
commitment on the part of Ricoh Co., Ltd.
© 1993 Ricoh Co., Ltd. All rights reserved. Printed in Japan.
© 1993 Pixel Translations, Inc. All rights reserved
1. OVERALL MACHINE INFORMATION
1.1. SPECIFICATIONS
Scanning method: Flat-bed and ADF
Book scan: Horizontal: Max. 297 mm [11.7 ins]
Vertical: Max. 432 mm [17.0 ins]
ADF: Document size:
- Width: 69~297 mm [2.7~11.7 ins]
- Length: 120~432 mm [4.7~17.0 ins]
all pages in a document must be the
same width
Document thickness: 0.07~0.16 mm
(equivalent to 52~128 g/m2)
[2.8~6.3 mils, 14 - 34 lb]
ADF capacity: 100 sheets (20 lb.)
85sheets(24lb.)
Stack height must be less tham 12 mm
Scanning resolution: Horizontal: 400 dpi
Vertical: 200~800 dpi (in 1 dpi steps)
Grayscales: 8 bits/pixel
Initialization time: About 20 seconds
Scanning speed: 1.4 s/200 dpi (A4, binary picture mode)
3 s/200 dpi (A3, binary picture mode)
Scanning throughput: 36 ppm/200 dpi (A4, binary picture mode)
18 ppm/400 dpi (A4, binary picture mode)
(Counted from the second page)
Interface: SCSI-2, high density; Video interface (option)
Power: 1) 85 to 138 V ac (45 to 65 Hz)
2) 176 to 276 V ac (45 to 65 Hz)
Power consumption Standby: 48 W Max.
(with all possible options): Scanning: 74 W Max.
Operating environment: Temperature: 10 to 32°C [50 to 90 °F]
Humidity: 20 to 80 % RH
Weight: Less than 25 kg [55.1 lbs]
Dimensions (W x D x H): 450 x 670 x 282 mm [17.7 x 26.4 x 11.1 ins]
Overall
Information
October 9th, 1995 OVERALL MACHINE INFORMATION
SPECIFICATIONS
1-1
1.2. COMPONENT LAYOUT
1.2.1. Front View
No. Name Function
1Platen cover Covers the document and serves as a neutral
background for documents placed on the main
exposure glass.
2ADF exposure cover Covers the scanner and closes the ADF exposure
cover interlock switch. Also contains an exposure
glass.
3Scale Used for positioning a document when placing it on
the exposure glass.
4 Power switch Turns the power on and off.
5Scanner indicator lamps The green and orange lights indicate the condition of
the scanner.
6Main exposure glass A document to be scanned in book mode is placed
face down on this glass.
1
2
3
4
5
6
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OVERALL MACHINE INFORMATION October 9th, 1995
COMPONENT LAYOUT
1-2
1.2.2. Rear View
No. Name Function
7 Expansion board slot Used to install an expansion board.
8 SCSI connectors For connecting the SCSI cables.
9SCSI ID rotary switch Used to select the SCSI ID and to select diagnostic
tests. Note that positions 8 and 9 are interpreted as
SCSI ID 7.
10 DIP switches Used to select various scanning modes and test
modes.
11 Reset switch If this is pressed, the machine is reset.
12 Power plug inlet For connecting the power cord.
9
11
12
7
10
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Overall
Information
October 9th, 1995 OVERALL MACHINE INFORMATION
COMPONENT LAYOUT
1-3
1.2.3. ADF
No. Name Function
13 ADF Automatically feeds multi-page documents into the
scanner.
14 ADF cover Open this cover to remove paper jammed at the
input side.
15 Document table Documents to be scanned using the ADF are placed
here.
16 Document guides Used to properly align the documents placed in the
input tray.
17 Document support wire If long documents are placed in the input tray, this
helps to feed them correctly.
18 Exit table Receives documents fed by the ADF after scanning.
19 Exit table extension This holds the documents output from the ADF; it can
be extended to support long documents.
20 ADF indicator lamps The green and orange lights indicate the ADF
operation condition.
13 14
15
16
17
18
19
20 g404v503.wmf
OVERALL MACHINE INFORMATION October 9th, 1995
COMPONENT LAYOUT
1-4
1.3. DRIVE LAYOUT
1.3.1. Scanner
No. Name Function
1Second carriage Moves to keep the distance between the xenon lamp
and the CCD constant, and sends light reflected from
the 1st carriage to the CCD.
2First carriage Moves the xenon lamp along the document and sends
the light reflected from the document to the 2nd
carriage by means of a mirror.
3Guide rails Hold the first and second carriages and guide their
movement.
4 Scanner drive wires Transmit motor power to the 1st and 2nd carriages.
5Motor gear box The gears in this box drive the motor belts that drive
the scanner.
6 Motor belt 2 Transmit motor power to the scanner drive wires.
7 Motor belt 1
8 Pulleys Hold the scanner drive wires.
9 Wire spring Tightens the scanner drive wires.
8
1
2
9
3
4
5
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7g404v504.wmf
Overall
Information
October 9th, 1995 OVERALL MACHINE INFORMATION
DRIVE LAYOUT
1-5
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