HP LaserJet Companion Service ...

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Service Manual
HP LaserJet Companion
Printer Accessory
(C3989A) Companion
(C3079A) Companion SE
(C4106A) Companion XI
Copyright Information
© 1997 Hewlett-Packard Company
All Rights Reserved.
Reproduction, adaptation, or
translation without prior written
permission is prohibited, except
as allowed under the copyright
laws.
Warranty
The information contained in this
document is subject to change
without notice.
Hewlett-Packard makes no
warranty of any kind with regard
to this material, including, but not
limited to, the implied warranties
of merchantability and fitness for
a particular purpose.
WARNING
Electrical Shock Hazard
To avoid electrical shock, use only
supplied power cords and
connect only to properly
grounded (3-hole) wall outlets.
Trademark Credits
Microsoft®and Windows®are
U.S. registered trademarks of
MicrosoftCorporation.PaperPort
is a trademark of Visioneer,Inc.in
the United States and other
countries. OmniPageProfessional
and OmniPageLiteare U.S.
registered trademarks of the
Caere Corporation.
Part number: C3989-90945
First Edition, March 1997
Hewlett-Packard shall not be
liable for errors contained herein
or for incidental or consequential
damages in connection with the
furnishing, performance, or use of
this material.
Contents
1
Product Information
Product Description ..........................1-1
System Requirements .......................1-1
Product Features ..........................1-2
Product Specifications .........................1-3
2
Functional Overview
Operation and Timing .........................2-1
Optical System ...........................2-1
Document-Feed System ......................2-2
Control Buttons ............................2-3
Software ...............................2-4
Installation Software ........................2-4
The PaperPort Software ......................2-4
3
Testing
Performing Main Tests .........................3-1
System Requirements .......................3-1
Initializing the NVRAM .......................3-1
Calibrating the Companion .....................3-1
Copying to the Printer .......................3-2
Scanning to the Computer .....................3-2
Performing Additional Tests ......................3-3
Cleaning the HP LaserJet Companion Printer Accessory .......3-4
4
Troubleshooting
Basic Troubleshooting .........................4-1
Power On ..............................4-2
Paper Movement ..........................4-4
Image Transfer Failures ......................4-6
Image Quality Problems ......................4-6
5
Removal and Replacement
Disassembly and Reassembly ....................5-1
Required Tools ...........................5-1
Disassembly ..............................5-2
Reassembly ..............................5-6
6
Parts
Ordering Parts .............................6-1
Documentation Part Numbers ...................6-1
Upper Cover Assembly .......................6-3
External Covers and Panels ....................6-5
Internal Components ........................6-7
Cables ..............................6-10
Power Supply Modules ......................6-10
EN
Contents-1
 A
Parts Index
List of Figures
Figure 4-1, Voltage Test Points ....................4-2
Figure 5-1, Gear Locations ......................5-8
Figure 5-1, Image Sensor Connector Wire Routing .........5-9
Figure 6-1, Upper Cover Assembly ..................6-2
Figure 6-2, External Covers and Panels ...............6-4
Figure 6-3, Internal Components ...................6-6
Contents-2
EN
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