Lexmark C746n, C746dn, C746dtn, C748e, C748de Service Manual

...
Lexmark™ C746n, C746dn, C746dtn,
• Tabl e of conte n t s
• Start diagnostics
Revised: April 19, 2012
C748e, C748de, C748dte
5026-3xx, 5xx
• Safet y and notices
• Index
Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and or other countries.
Edition: April 19, 2012 The following paragraph does not apply to any country where such provis ions are inconsistent wit h local law:
LEXMARK INTERNATIONAL, INC. PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow disclaimer of express or implied warranties in certain transactions; therefore, this statement may not apply to you.
This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in later editions. Improvements or changes in the products or the programs described may be made at any time.
Comments may be addressed to Lexmark International, Inc., Department D22A/032-2, 740 West New Circle Road, Lexington, Kentucky 40550, U.S.A or e-mail at ServiceInfoAndTraining@Lexmark.com. Lexmark may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you.
References in this publication to products, programs, or services do not imply that the manufacturer intends to make these available in all countries in which it operates. Any reference to a product, program, or service is not intended to state or imply that only that product, program, or service may be used. Any functionally equivalent product, program, or service that does not infringe any existing intellectual property right may be used instead. Evaluation and verification of operation in conjunction with other products, programs, or services, except those expressly designated by the manufacturer, are the user’s responsibility.
Lexmark, Lexmark with diamond design, and MarkNet are trademarks of Lexmark International, Inc., registered in the United States and/or other countries.
PrintCryption is a trademark of Lexmark International, Inc.
PCL® is a registered trademark of the Hewlett-Packard Company.
All other trademarks are the property of their respective owners.
© 2012 Lexmark International, Inc.
All rights reserved.
GOVERNMENT END USERS
The Software Program and any related documentation are "Commercial Items," as that term is defined in 48 C.F.R. 2.101, "Computer Software" and "Commercial Computer Software Documentation," as such terms are used in 48 C.F.R. 12.212 or 48 C.F.R. 227.7202, as applicable. Consistent with 48 C.F.R. 12.212 or 48 C.F.R. 227.7202-1 through 227.7207-4, as applicable, the Commercial Computer Software and Commercial Software Documentation are licensed to the U.S. Government end users (a) only as Commerical Items and (b) with only those rights as are granted to all other end users pursuant to the terms and conditions herein.
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P/N 12G2599
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Table of contents

Notices and safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ix
Laser notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Aviso sobre o laser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-x
Lithium warning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Safety information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xviii
Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
Navigation buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii-xix
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Media options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Memory options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Printer specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Expansion opportuni ti es . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Data streams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Environment specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Electrical and power specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Acoustic specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Media specificat ions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Input and output capaciti es . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Input and output sizes and types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Paper guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Tools required for servi ce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
Diagnostic information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Operator panel and menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
C746x operator panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
C746x buttons and light descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
C748x operator panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
C748x buttons and light descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Administrative menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
Power-on self test (POST) sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Symptom tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Printer symptom table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Print quality symptom table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
User status and attendance me ssages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
Error codes and messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
Service checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
31.xx—Cartridge errors service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
110.xx—Mirr or mot or service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-45
111.xx, 112.xx, 113.xx, and 114.xx—Printhead error service check . . . . . . . . . . . . . . . . . . . . . . 2-46
120.xx—Fuser error service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-47
140.xx, 920.02—Autocomp (tray 1) motor error service check . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49
142.xx, 906.01–906.04—Motor (fus er) error service chec k . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-49
143.xx—Motor (EP dr ive assembly top cartri dge 1 moto r) error service check . . . . . . . . . . . . 2-51
144.xx—Motor (EP drive assembly middle cartridge) error service check . . . . . . . . . . . . . . . . 2-52
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145.xx—Motor (EP drive assembly bottom cartri dge) error service check . . . . . . . . . . . . . . . . .2-54
146.xx, 148.xx—Motor (MPF/duplex) error service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-55
147.xx, 920.01—PO ST (power-on self test) aligner error service check . . . . . . . . . . . . . . . . . . .2-57
155.xx—Cam motor error service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-58
156.xx—COD (Color On Demand) motor service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-60
160.xx, 161.xx—M otor Error (optio n tray 2) service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-60
162.xx, 163.xx—M otor Error (optio n tray 3) service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-61
164.xx, 165.xx—M otor Error (optio n tray 4) service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-62
166.xx, 167.xx—M otor Error (optio n tray 5) service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-63
168.xx—Motor (HCIT elevator) error service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-64
200.11, 250.03—Paper Jam error service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-64
201.06, 201.08, 201.31—Paper Jam error service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-65
203.09—Paper Jam error service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-68
230.03, 230.05—Paper Jam error service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-70
242.02—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 7 1
242.03, 242.11—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-72
242.05—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 7 3
242.10—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 7 4
242.17—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 7 5
242.21, 243.21, 244.21. 245.21, 242.30, 243.30, 244.30, 245.30—Paper Jam service check . . . .2-76
242.26—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 7 6
242.27—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 7 7
242.29—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 7 7
242.32, 243.32, 244.32, 245.32—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-78
243.02—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 7 8
243.03, 243.11—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-79
243.05—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 0
243.10—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 1
243.17—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 2
243.26—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 3
243.27—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 3
243.29—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 3
244.02—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 4
244.03, 244.11—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-85
244.05—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 5
244.10—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 6
244.17—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 6
244.26—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 7
244.27—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 8
244.29—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 8
245.02—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 8 9
245.03, 245.11—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-90
245.05—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 9 0
245.10—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 9 1
245.17—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 9 2
245.29—Paper Jam service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 - 9 3
900.00–900.99 (except 900.05)—Syst em software error servi ce check . . . . . . . . . . . . . . . . . . . .2-93
900.05—Transfer module error service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-96
902.59—Engine software error, NVRAM MGR problem service check . . . . . . . . . . . . . . . . . . . .2-96
920.03, 920.25—Transfer Module Missing or not connected service check . . . . . . . . . . . . . . . .2-97
920.04—POST (power-on self test) fuser motor not connecte d error service check . . . . . . . . .2-97
920.05—POST (power-on self test) printhead motor not conne cted error service check . . . . .2-98
920.06—Input sensor service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-99
920.07—POST (power-on self test)—Narrow med ia sensor error service check . . . . . . . . . . . .2-99
920.08—Exit sensor service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-100
920.09—POST (power-on self test)—Four toner sensors not connected error service check 2-102
920.10—POST—Three toner sensors not connected error servi ce check . . . . . . . . . . . . . . . .2-103
920.11—POST (power-on self test)—Two toner sensors not connected error service check 2-104
920.12—POST (power-on self test)—One toner sensor not connected error service check .2-105
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920.13—POST (power-on self test) cartridge motor 1 not connected error service check . . 2-106
920.14—POST (power-on self test)—Cartridge motor 2 not connec ted error service check . 2-107
920.15, 920.20—POST (power-on self test)—Bad transfer module NVRAM data error servi ce check
2-108
920.16—POST (power-on self test)—Bad print head NVRAM data error service check . . . . . 2-108
920.17—POST (power-on self test)—Output bi n cable not connected error service check . . 2-109
920.18—POST (power-on self test)—Cartridge motor 3 not connec ted error service check . 2-110
920.19—POST (power-on self test)—Transfer module stepper motor not connected error service
check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-110
920.21—POST (power- on self test)—24 V power supply failure er ror service check . . . . . . . 2-112
920.23—POST (power- on self test)—Duplex motor not connec ted er ror service check . . . . 2-113
920.27, 920.28, 920.29—POST (power on self test) option tray error service check . . . . . . . . 2-114
920.32—MPF paper presen t sensor not connected service check . . . . . . . . . . . . . . . . . . . . . . 2-114
925.01, 925.03, 925.05—Fan error service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-114
925.02, 925.04, 925.06—Cartridge cooling fan error service check . . . . . . . . . . . . . . . . . . . . . 2-115
945.xx, 947.xx—Transfer roll error service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-116
950.00–950.29— EPROM misma tch failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-118
956.xx—System board failure service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-119
5 V interlock switch service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-120
24 V interlock switch service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-121
Bubble sensor service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-122
Dead printer service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-124
Networking service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-124
Operator panel service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-127
Print quality service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-128
Tray 1 missing service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-135
Tray linking service check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-136
Diagnostic aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Accessing test and diag nosti c procedure menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Diagnostics menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Diagnostics menu stru cture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Available tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Motor tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Print Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Hardware Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Duplex Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Printhead Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
Device Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
Printer Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
EP Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-24
Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
EXIT DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26
Configuration menu (CONFIG MENU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
Available tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
Reset Fuser Cnt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Color Lock Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Print Quality Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
Color Trapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
Tray Insert Msg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
Panel Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
PPDS Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
Download Emuls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
Demo Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
Table of contents v
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Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-30
Energy Conserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-30
Automatic Color Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-31
Auto Align Adj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-31
Color Adj State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-31
Enforce Color Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-31
Color Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-31
Motor Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-32
Paper Prompts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-32
Envelope Prompts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-32
Action for Prompts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-32
Jobs on Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-32
Disk Encryption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-33
Wipe Disk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-33
Wipe All Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-33
Duplex Gloss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-34
Font Sharpening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-34
Require Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-34
UI Automation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-34
Key Repeat Initial Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-34
Key Repeat Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-34
Clear Custom Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-34
USB Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-34
Automatically Display Error Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3- 3 5
Exit Config . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-35
Front cover locked in place . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-36
Printhead verification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-39
Paper Jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-42
Error jam locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-42
Clearing jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-43
Theory of operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 5 1
Paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-51
Electrophotogr aphic (EP) process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6 3
Electrical interlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-73
Repair information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Safety in fo r ma tion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Data Security Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
Handling ESD-sensiti ve parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Handing the photoconduct or uni t . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Transportation/storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Parts not to be touched . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Screw and retainer identifi cation table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
Printhead alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
Printer removal procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-28
Precautions to take before maintenance work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-28
Cover removals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-29
Front access cover assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-29
Left cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-31
Operator panel assem bly removal (C746) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-34
Operator panel assem bly removal (C748) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-37
Operator panel bezel removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-41
Operator panel buttons removal (C746) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-41
Operator panel buttons removal (C748) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-43
Output bin extension cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 - 4 5
Paper tray dust cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 4 6
Rear frame cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-47
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5026
Rear left cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-48
Rear right cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-49
Rear upper cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-50
Right cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-51
Top access cover assembl y removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-54
Top cover assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-58
Printe r re movals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-61
5 V interlock switch cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-61
24 V interlock switch removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-63
Bin full sensor flag removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-65
Bin full sensor removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-65
Cartridge cooling fan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-66
Cartridge motor 1/fuser cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-67
Cartridge motor 2/3 cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-69
Color on demand assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-70
Contact springs kit removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-75
Cooling fan removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-85
Cooling fan filter removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-86
Duplex reference edge guide assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-87
Electrophotogr aphic (EP) drive assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-90
Front door assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-100
Front door assembly fron t cabl e (left) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-103
Front door assembly fron t cabl e (right) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-107
Fuser removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-110
Fuser AC cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-112
Fuser DC cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-113
Hard drive assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-114
High-voltage power supply (HVPS) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-115
High-voltage power supply (HVPS) cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-117
Left bell crank assembl y rem oval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-118
Low-voltage power supply (LVPS) removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-119
Motor driver card removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-121
Motor driver cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-122
Multipurpose fee der (MPF)/duplex gear and housing removal . . . . . . . . . . . . . . . . . . . . . . . . . 4-123
Multipurpose fee der (MPF)/duplex motor assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-125
Multipurpose fee der (MPF)/duplex motor cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-128
Multipurpose fee der (MPF) paper present sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-129
MPF pick removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-131
Operator panel cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-132
Operator panel ground cab le removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-133
Operator panel USB connector cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-134
Option cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-135
Paper pick mechanis m asse mbl y rem oval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-137
Photoconductor unit removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-142
Pick arm roll removal and replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-143
Printer pad removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-144
Printhead removal, installation, and adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-145
Right bell crank assembly rem oval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-154
Speaker removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-155
System board removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-155
System board support shield removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-160
Toner level sensor removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-163
Top cover camshaft assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-165
Transfer module removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-171
Transport cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-173
Transport motor cable removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-175
Waste toner assembly rem oval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-176
Waste toner HV contact assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-177
Wireless network antenna removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-190
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Wireless network card removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-191
Option removals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-193
HCIT media tray assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-193
HCIT front tray cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-194
HCIT rear cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-195
HCIT right cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-196
HCIT left cover removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-197
Feed with bushing roller removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-198
HCIT controller board assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-199
HCIT drawer slide assembly rem oval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-200
HCIT elevator motor with sensor removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-200
HCIT pick arm roll removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-202
HCIT slide assembly with spring removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-203
Photointerrupter sensor with cable assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-205
Top plate assembly removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-206
Connector locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
System board diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Preventive mainte nan ce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Safety inspection guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Lubrication spec if ications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Maintaining the print er . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Cleaning the exterior of the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Cleaning the printhead l enses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Moving the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Parts catalog. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
How to use this parts catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Assembly 1: Covers (C746). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Assembly 2: Covers (C748). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Assembly 3: Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Assembly 4: Right . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Assembly 5: Rear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Assembly 6: Left . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
Assembly 7: Top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14
Assembly 8: Cable parts packet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-15
Assembly 9: Optional 550-sheet media draw er and tray . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
Assembly 10: Optional special media tray assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-17
Assembly 11: Optional high-capacity input option (HCIT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
Assembly 12: Options and features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-1
Part number index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-7
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Notices and safety information

The following laser notice labels may be affixed to this printer.

Laser no tice

This product is certified in the U.S. to conform to the requirements of DHHS 21 CFR Subchapter J for Class I (1) laser products, and elsewhere is certified as a Class I laser product conforming to the requirements of IEC 60825-1.
Class I laser products are not considered to be hazardous. The printer contains internally a Class IIIb (3b) AlGaAs laser producing visible radiation in the wavelength of 770-800 nanometers enclosed in a non­serviceable printhead assembly. The laser system and printer are designed so there is never any human access to laser radiation exceeding Class I levels during normal operation, user maintenance, or prescribed service condition.

Laser-Hinweis

Dieses Produkt ist in den USA zertifiziert und entspricht den Anforderungen der Vorschriften DHHS21CFR UnterkapitelJ für Laserprodukte der KlasseI(1), andernorts ist er als Laserprodukt der KlasseI zertifiziert, das den Anforderungen von IEC60825-1 entspricht.
Laserprodukte der KlasseI werden nicht als gefährlich betrachtet. Der Drucker enthält im Inneren einen Laser der KlasseIIIb (3b) AlGaAs, der sichtbare Strahlung im Wellenlängenbereich von 770bis 800Nanometern abgibt. Dieser befindet sich in einer Druckkopfeinheit, die nicht gewartet werden kann. Das Lasersystem und der Drucker sind so konstruiert, dass unter normalen Betriebsbedingungen bei der Wartung durch den Benutzer oder bei den vorgeschriebenen Wartungsbedingungen Menschen keiner Laserstrahlung ausgesetzt sind, die die Werte für KlasseI überschreitet.

Avis relatif à l’utilisation de laser

Ce produit est certifié conforme aux exigences de la réglementation des Etats-Unis relative aux produits laser (DHHS21 CFR Sous-chapitreJ pour ClasseI (1)). Pour les autres pays, il est certifié conforme aux exigences des normes CEI60825-1 relatives aux produits laser de classeI.
Les produits laser de ClasseI ne sont pas considérés comme dangereux. L'imprimante contient un laser de ClasseIIIb (3b) AlGaAs qui produit des radiations visibles opérant sur une longueur d'onde de l'ordre de 770 à 800nanomètres au sein d'un boîtier non démontable de la tête d'impression. Le système laser et l'imprimante ont été conçus de manière à ce que personne ne soit jamais exposé à des radiations laser dépassant le niveau de classeI dans le cadre d'un fonctionnement normal, de l'entretien par l'utilisateur ou de la maintenance.
Notices and safety information ix
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Avvertenze sui prodotti laser

Questo prodotto è certificato negli Stati Uniti come prodotto conforme ai requisiti DHHS 21 CFR Sottocapitolo J per i prodotti laser di Classe I (1), mentre in altri paesi è certificato come prodotto laser di Classe I conforme ai requisiti IEC 60825-1.
I prodotti laser di Classe I non sono considerati pericolosi. La stampante contiene un laser Classe IIIb (3b) AlGaInP che emette una radiazione visibile a una lunghezza d'onda di 770-800 nanometri all'interno dell'unità testina di stampa non sottoponibile a manutenzione. Il sistema laser e la stampante sono stati progettati in modo da impedire l'esposizione a radiazioni laser superiori al livello previsto dalla Classe I durante le normali operazioni di stampa, manutenzione o assistenza.

Avisos sobre el láser

Este producto se ha certificado en EE.UU. cumpliendo con los requisitos de DHHS 21 CFR subcapítulo J para los productos láser de ClaseI (1) y en otros países está certificada como un producto láser de ClaseI de acuerdo con los requisitos de IEC 60825-1.
Los productos láser de ClaseI no se consideran peligrosos. Este producto contiene un láser interno de Clase IIIb (3b) AlGaAs que produce una radiación visible en una longitud de onda de 770-800 nanómetros cerrado en un conjunto de cabezal de impresión que no se puede reparar. El sistema láser y la impresora se han diseñado para que el ser humano no acceda nunca a las radiaciones láser por encima del nivel de Clase I durante el funcionamiento normal, mantenimiento del usuario o condición de servicio prescrita.

Declaração sobre Laser

Este produto foi certificado nos EUA por estar em conformidade com os requisitos do DHHS 21 CFR, subcapítulo J, para produtos a laser de Classe I (1) e, nos demais países, foi certificado como um produto a laser de Classe I em conformidade com os requisitos da IEC 60825-1.
Os produtos a laser de Classe I não são considerados prejudiciais. A impressora contém, internamente, um laser de Classe IIIb (3b) AlGaAs que produz radiação visível no comprimento de onda de 770-800 nanômetros incluso em um conjunto do cabeçote de impressão cuja manutenção não é facilitada. O sistema do laser e a impressora foram projetados para que jamais haja acesso humano à radiação do laser acima dos níveis da Classe I durante a operação normal ou a manutenção pelo usuário ou sob as condições de manutenção prescritas.

Aviso sobr e o las er

Nos E.U.A., este produto está classificado como estando em conformidade com os requisitos DHHS 21 CFR, Subcapítulo J, para produtos laser de Classe I (1) e, nas restantes regiões, está classificado como um produto de Classe I, estando em conformidade com os requisitos IEC 60825-1.
Os produtos laser de Classe I não são considerados perigosos. A impressora possui, no seu interior, um laser de Classe IIIb (3b) AlGaAs que produz radiação num comprimento de onda de 770-800 nanómetros. Este encontra-se fechado no conjunto da cabeça de impressão, que não é passível de manutenção. O sistema de laser e a impressora estão concebidos de forma a que nunca haja acesso humano à radiação laser que excede os níveis correspondentes à Classe I durante o funcionamento normal, manutenção ou em condições de assistência recomendada.
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Laserinformatie

Dit product is in de Verenigde Staten gecertificeerd als een product dat voldoet aan de vereisten van DHHS 21 CFR paragraaf J voor laserproducten van klasse I (1). Elders is het product gecertificeerd als een laserproduct van klasse I dat voldoet aan de vereisten van IEC 60825-1.
Laserproducten van klasse I worden geacht geen gevaar op te leveren. De printer bevat intern een laser van klasse IIIb (3b) AlGaAs die zichtbare straling produceert in een golflengtebereik van 770-800 nanometer in een niet-bruikbare printkopeenheid. Het lasersysteem en de printer zijn zodanig ontworpen dat gebruikers nooit blootstaan aan laserstraling die hoger is dan het toegestane niveau voor klasse I-apparaten, tijdens normaal gebruik, onderhoudswerkzaamheden door de gebruiker of voorgeschreven servicewerkzaamheden.

Lasermeddelelse

Dette produkt er certificeret i USA i henhold til kravene i DHHS 21 CFRi underafsnit J for klasse l (1)­laserprodukter og er andre steder certificeret som et klasse I laserprodukt i henhold til kravene i IEC 60825-1.
Klasse I-laserprodukter er ikke anset som farlige. Printeren indeholder internt en klasse IIIb (3b) AlGaAs-laser, der producerer synlig stråling med en bølgelængde på 770-800 nanometer, indkapslet i en ikke-servicerbar printhovedsamling. Lasersystemet og printeren er udviklet på en sådan måde, at der ikke er en direkte laserstråling, der overskrider Klasse I-niveauet under normal brug, brugers vedligeholdelse eller de foreskrevne servicebetingelser.

Laserilmoitus

Tämä tuote on sertifioitu Yhdysvalloissa DHHS 21 CFR Subchapter J -standardin mukaiseksi luokan I (1) ­lasertuotteeksi ja muualla IEC 60825-1 -standardin mukaiseksi luokan I lasertuotteeksi.
Luokan I lasertuotteita ei pidetä haitallisina. Laitteen tulostuspääkokoonpanossa (ei huollettavissa) on sisäänrakennettu luokan IIIb (3b) AlGaAs -laser, joka tuottaa silminnähtävää säteilyä 770-800 nanometrin aallonpituudella. Laserjärjestelmä ja tulostin ovat rakenteeltaan sellaisia, että käyttäjä ei joudu alttiiksi luokkaa 1 suuremmalle säteilylle normaalin käytön, ylläpidon tai huollon aikana.

Huomautu s las er laitteesta

Tämä tuote on sertifioitu Yhdysvalloissa DHHS 21 CFR Subchapter J -standardin mukaiseksi luokan I (1) ­lasertuotteeksi ja muualla IEC 60825-1 -standardin mukaiseksi luokan I lasertuotteeksi.
Luokan I lasertuotteita ei pidetä haitallisina. Laitteen tulostuspääkokoonpanossa (ei huollettavissa) on sisäänrakennettu luokan IIIb (3b) AlGaAs -laser, joka tuottaa silminnähtävää säteilyä 770-800 nanometrin aallonpituudella. Laserjärjestelmä ja tulostin ovat rakenteeltaan sellaisia, että käyttäjä ei joudu alttiiksi luokkaa 1 suuremmalle säteilylle normaalin käytön, ylläpidon tai huollon aikana.
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Laser-notis

Denna produkt är certifierad i USA i enlighet med kraven i DHHS 21 CFR underkapitel J för klass I (1)­laserprodukter, och på andra platser certifierad som en klass I-laserprodukt i enlighet med kraven i IEC 60825-1.
Klass I-laserprodukter betraktas inte som skadliga. Skrivaren innehåller en klass IIIb (3b) AlGaAs-laser som producerar synlig strålning inom våglängden 770-800 nm, innesluten i en icke-servicebar skrivhuvudenhet. Lasersystemet och skrivaren är utformade så att människor aldrig utsätts för laserstrålning som överskrider klass I-nivåerna under normala förhållanden vid användning, underhåll eller service.

Laser-melding

Dette produktet er sertifisert i USA for samsvar med kravene i DHHS 21 CFR, underkapittel J for laserprodukter av klasse I (1) og er andre steder sertifisert som et laserprodukt av klasse I som samsvarer med kravene i IEC 60825-1.
Laserprodukter av klasse I anses ikke som helseskadelige. Skriveren inneholder en intern AlGaAs-laser av klasse IIIb (3b) som produserer synlig stråling i bølgelender på 770-800 nanometer i en ikke-reparerbar skrivehodeenhet. Lasersystemet og skriveren er utformet slik at mennesker ikke utsettes for laserstråling utover nivåene i klasse I under normal drift, vedlikehold eller foreskrevet service.

Avís sobre el Làser

Este producto está certificado en Estados Unidos para el cumplimiento de los requisitos estipulados en DHHS 21 CFR Subcapítulo J para productos láser de Clase I (1), y cuenta con certificación para otros países como producto láser de Clase I de conformidad con los requisitos de IEC 60825-1.
Los productos láser de Clase I no se consideran peligrosos. La impresora contiene en su interior radiación láser visible AlGaAs Clase IIIb (3b) en la longitud de onda de 770 - 800 nanómetros dentro de un mecanismo de cabezal de impresión que no requiere servicio técnico. La impresora y el sistema láser están diseñados de forma tal que no exista nunca acceso humano a radiación láser que supere los niveles de Clase I durante el funcionamiento normal, las tareas de mantenimiento por parte del usuario o las condiciones de servicio técnico estipuladas.
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CAUTION
This product contains a lithium battery. THERE IS A RISK OF EXPLOSION IF THE BATTERY IS REPLACED BY AN INCORRECT TYPE. Discard used batteries according to the battery manufacturer’s instructions and local regulations.

Lithium warn ing

Safety information

The safety of this product is based on testing and approvals of the original design and specific
components. The manufacturer is not responsible for safety in the event of use of unauthorized replacement parts.
The maintenance information for this product has been prepared for use by a professional service person
and is not intended to be used by others.
There may be an increased risk of electric shock and personal injury during disassembly and servicing of
this product. Professional service personnel should understand this and take necessary precautions.
CAUTION: When you see this symbol, there is a danger from hazardous voltage in the area of the
product where you are working. Unplug the product before you begin, or use caution if the product must receive power in order to perform the task.

Consignes de sécurité

La sécurité de ce produit repose sur des tests et des
agréations portant sur sa conception d'origine et sur des composants particuliers. Le fabricant n'assume aucune responsabilité concernant la sécurité en cas d'utilisation de pièces de rechange non agréées.
Les consignes d'entretien et de réparation de ce produit s'adressent uniquement à un personnel de
maintenance qualifié.
Le démontage et l'entretien de ce produit pouvant présenter certains risques électriques, le personnel
d'entretien qualifié devra prendre toutes les précautions nécessaires.
ATTENTION : Ce symbole indique la présence d'une tension dangereuse dans la partie du
produit sur laquelle vous travaillez. Débranchez le produit avant de commencer ou faites preuve de vigilance si l'exécution de la tâche exige que le produit reste sous tension.

Norme di sicurezza

La sicurezza del prodotto si basa sui test e sull'approvazione del progetto originale e dei componenti
specifici. Il produttore non è responsabile per la sicurezza in caso di sostituzione non autorizzata delle parti.
Le informazioni riguardanti la manutenzione di questo prodotto sono indirizzate soltanto al personale di
assistenza autorizzato.
Durante lo smontaggio e la manutenzione di questo prodotto,
il rischio di subire scosse elettriche e danni alla persona è più elevato. Il personale di assistenza autorizzato deve, quindi, adottare le precauzioni necessarie.
ATTENZIONE: Questo simbolo indica la presenza di tensione pericolosa nell'area del prodotto.
Scollegare il prodotto prima di iniziare o usare cautela se il prodotto deve essere alimentato per eseguire l'intervento.
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Sicherheitshinweise

Die Sicherheit dieses Produkts basiert auf Tests und Zulassungen des ursprünglichen Modells und
bestimmter Bauteile. Bei Verwendung nicht genehmigter Ersatzteile wird vom Hersteller keine
Verantwortung oder Haftung für die Sicherheit übernommen.
Die Wartungsinformationen für dieses Produkt sind ausschließlich für die Verwendung durch einen
Wartungsfachmann bestimmt.
Während des Auseinandernehmens und der Wartung des Geräts besteht ein zusätzliches Risiko eines
elektrischen Schlags und körperlicher Verletzung. Das zuständige Fachpersonal sollte entsprechende
Vorsichtsmaßnahmen treffen.
ACHTUNG: Dieses Symbol weist auf eine gefährliche elektrische Spannung hin, die in diesem
Bereich des Produkts auftreten kann. Ziehen Sie vor den Arbeiten am Gerät den Netzstecker des Geräts, bzw. arbeiten Sie mit großer Vorsicht, wenn das Produkt für die Ausführung der Arbeiten an den Strom angeschlossen sein muß.

Pautas de Seguridad

La seguridad de este producto se basa en pruebas y aprobaciones del diseño original y componentes
específicos. El fabricante no es responsable de la seguridad en caso de uso de piezas de repuesto no
autorizadas.
La información sobre el mantenimiento de este producto está dirigida exclusivamente al personal
cualificado de mantenimiento.
Existe mayor riesgo de descarga eléctrica y de daños personales durante el desmontaje y la reparación de
la máquina. El personal cualificado debe ser consciente de este peligro y tomar las precauciones
necesarias.
PRECAUCIÓN: este símbolo indica que el voltaje de la parte del equipo con la que está
trabajando es peligroso. Antes de empezar, desenchufe el equipo o tenga cuidado si, para trabajar con él, debe conectarlo.

Inform a çõ es de Segurança

A segurança deste produto baseia-se em testes e aprovações do modelo original e de componentes
específicos. O fabricante não é responsável pela segunrança, no caso de uso de peças de substituição
não autorizadas.
As informações de segurança relativas a este produto destinam-se a profissionais destes serviços e não
devem ser utilizadas por outras pessoas.
Risco de choques eléctricos e ferimentos graves durante a desmontagem e manutenção deste produto.
Os profissionais destes serviços devem estar avisados deste facto e tomar os cuidados necessários.
CUIDADO: Quando vir este símbolo, existe a possível presença de uma potencial tensão
perigosa na zona do produto em que está a trabalhar. Antes de começar, desligue o produto da tomada eléctrica ou seja cuidadoso caso o produto tenha de estar ligado à corrente eléctrica para realizar a tarefa necessária.
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Informació de Seguretat

La seguretat d'aquest producte es basa en l'avaluació i aprovació del disseny original i els components
específics. El fabricant no es fa responsable de les qüestions de seguretat si s'utilitzen peces de recanvi no autoritzades.
La informació pel manteniment d’aquest producte està orientada exclusivament a professionals i no està
destinada a ningú que no ho sigui.
El risc de xoc elèctric i de danys personals pot augmentar durant el procés de desmuntatge i de servei
d’aquest producte. El personal professional ha d’estar-ne assabentat i prendre les mesures convenients.
PRECAUCIÓ: aquest símbol indica que el voltatge de la part de l'equip amb la qual esteu
treballant és perillós. Abans de començar, desendolleu l'equip o extremeu les precaucions si, per treballar amb l'equip, l'heu de connectar.
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CAUTION
A caution identifies something that might cause a servicer harm.
CAUTION
This type of caution indicates there is a danger from hazardous voltage in the area of the product where you are working. Unplug the product before you begin, or use caution if the product must receive power in order to perform the task.
CAUTION
This type of caution indicates a hot surface.
CAUTION
This type of caution indicates a tipping hazard.

Preface

This manual contains maintenance procedures for service personnel. It is divided into the following chapters:
1. General infor m a ti o n contains a general description of the printer and the maintenance approach used to
repair it. Special tools and test equipment, as well as general environmental and safety instructions, are
discussed.
2. Diagnostic information contains an error indicator table, symptom tables, and service checks used to
isolate failing field replaceable units (FRUs).
3. Diagnostic aids contains tests and checks used to locate or repeat symptoms of printer problems.
4. Repair infor ma t io n provides instructions for making printer adjustments and removing and installing
FRUs.
5. Connector locations uses illustrations to identify the connector locations and test points on the printer.
6. Preventive maintenance contains the lubrication specifications and recommendations to prevent
problems.
7. Parts catalog contains illustrations and part numbers for individual FRUs.
Appendix A contains service tips and information.
Appendix B contains representative print samples.

Conventions

Note: A note provides additional information. Warning: A warning identifies something that might damage the product hardware or software.
There are several types of caution statements:
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Navigation buttons

This manual contains navigation buttons in the right margin of each page, making it easier and quicker to navigate.
Button Description
Previous
Click to move the document view backward by one page.
Next
Click to move the document view forward by one page.
Go Back
Click to return to the last page viewed.
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1. General in formation

The Lexmark™ C746x and C748x family of color laser printers.

Models

Options

Printer name
Lexmark C746n 5026-310 Network-ready
Lexmark C746dn 5026-330 Network-ready with duplex
Lexmark C746dtn 5026-330 Network-ready with duplex and 550 sheet tray
Lexmark C748e 5026-510 Network-ready with etask touch screen
Lexmark C748de 5026-530 Network-ready with etask touch screen and duplex
Lexmark C748dte 5026-530 Network-ready with etask touch screen, duplex, and
Machine typ e and model
Description
550 sheet tray
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Number Description
1 Standard output bin
2 Paper support
3 Printer operator panel
4 Standard 550-sheet stray (Tray 1)
5 Multipurpose feeder
6 Optional 550-sheet specialty media drawer
7 Optional 550-sheet tray
8 Optional 2,000-sheet high.capacity feeder
Note: Some configurations may require a caster base for stability.

Media options

The C746x and C748x printers support the 550-sheet drawer, special media drawers, and 2000-sheet high­capacity input tray. The C746x and C748x printers support up to four input options. The options can include any combination of 550 sheet drawers and 550 sheet Specialty Media Drawers, with a maximum of one 2000 sheet drawer (always at the lowest position.) A caster base is required with some configurations. Including the base machine capacity of 650 sheets, the C746x and C748x supports up to 4300 sheets.
The Lexmark C74x options are compatible with the Lexmark C73x SFP, X73x MFP, and X74x MFP, but not with any other Lexmark printers. No other options are supported by the C74x.
The media options include:
550-Sheet Drawer—This optional input source installs beneath the printer, and it holds approximately 550
sheets of (20 lb.) paper.
High Capacity Input Tray—This optional input source installs beneath the printer, and it holds
approximately 2000 sheets of (20 lb.) paper.
Specialty Media Drawer—This optional input source installs beneath the printer, and it holds
approximately 550 sheets of (20 lb.) paper, or 85 standard envelopes.

Memory options

Additional memory card—The memory options for the C746x and C748x printers are 200 pin DDR2,
SODIMM, and they are available at 256MB, 512MB, and 1GB sizes.
Flash memory card—Flash Memory cards are available in 256MB.
Hard disk—If larger storage is required, an optional hard disk is available.
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Printer specifications

Dimensions

The following table contains the dimensions and weight for each of the respective printer models. This does not include packaging.
Height Width Depth Weight
Basic printer (C746n/dn) 454.7 mm
Basic printer (C748e/de) 454.7 mm
C746dtn printer, with 550-sheet optional drawer
C748dte printer, with 550-sheet optional drawer
550-sheet drawer 169.0 mm
550-sheet special media drawer 169.0 mm
2000-sheet high capacity feeder 387.0 mm
Spacer 169.0 mm
Caster Base 127.0 mm
(17.9 in)
(17.9 in)
581.7 mm (22.9 in)
581.7mm (22.9 in)
(6.6 in)
(6.6 in)
(15.2 in)
(6.6 in)
(5.0 in)
435.0 mm (17.1 in)
435.0 mm (17.1 in)
435.0 mm (17.1 in)
435.0 mm (17.1 in)
435.0 mm (17.1 in)
435.0 mm (17.1 in)
435.0 mm (17.1 in)
435 mm (17.1 in)
778 mm (30.6 in)
400.0 mm (15.7 in)
400.0 mm (15.7 in)
545.0 mm (21.5 in)
545.0 mm (21.5 in)
545.0 mm (21.5 in)
545.0 mm (21.5 in)
545.0 mm (21.5 in)
545 mm (21.5 in)
812.0 mm (32.0 in)
25.2 kg (55.6 lbs)
25.6 kg (56.4 lbs)
29.7 kg (65.5 lbs)
30.1kg (66.4 lbs)
4.5 kg (10.0 lbs)
4.5 kg (10.0 lbs)
26.1 kg (57.5 lbs)
3.2 kg (7.0 lbs)
43.1 kg (95.0 lbs)
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5

Clearances

Memory

Number Description Clearance
1 Right side 101.6 mm (4 in.)
2 Front 609.6 mm (24 in.)
3 Left side 152.4 mm (6 in.)
4 Rear 152.4 mm (6 in.)
5 Top 304.8 mm (12 in.)
C746 C748
Standard memory—The standard RAM is soldered onto the system board.
Memory size
Optional memory—Optional DIMM (Dual Inline Memory Module) is a card that can be plugged into an available memory slot on the system board. Flash memory is a card that can also be plugged into an available slot.
Maximum number of memory (DIMM) slots
Maximum number of flash memory slots
DIMM memory sizes available
256MB, 512MB, 1024MB 256MB, 512MB, 1024MB
512MB 512MB
11
11
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Flash (Nand Flash)
Maximum possible memory
256 256
1536MB 1536MB
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Expansion opportunities

Interface card expansion slots 1
Code Enhancement Socket (application solution firmware)
Hard disk Interface (for optional hard disk)

Resolution

The following resolutions are available:
4800CQ (default resolution)
1200 x 1200 dpi (at reduced printer speed)

Data streams

XPS
PCL 6 emulation (includes PCL 5e and PCL XL interpreters)
PostScript 3 emulation
PDF 1.6
PPDS
PictBridge
HTML (including DBCS)
Direct Image (TIFF, TIF, JPEG, JPG, GIF, PNG, BMP, PCX, and DCX)

Environment specifications

2
1
Environment Specifications
Operating
Air temperature—Operating 15.6° to 32.2° C (60° to 90° F)
Air temperature—Power off 10° to 40° C (50° to 104° F)
Air Relative Humidity Relative humidity 8% to 80%
Wet Bulb Temperature—Operating 22.8° C (73.0° F) Maximum
Web Bulb Temperature—Power off 26.7° C (80.1° F) Maximum
Altitude 0–3,048 meters (10,000 ft.)
Ambient Operating Environment* 15.6° to 32.2° C (60° to 90° F) and 8% to 80% RH
Shipping and storage
Cartridges (packaged) -40° C to 40° C (104° Fahrenheit)
Printer with Cartridges (packaged) -40° C to 40° C (104° Fahrenheit)
Printer without Cartridges -40° C to 40° C (104° Fahrenheit)
Air Relative Humidity Relative humidity 8% to 80%
Altitude 0–10,300 meters (34,000 feet)
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Environment Specifications
Web Bulb Temperature—Power Off 26.7° C (80.1° F) Maximum
* In some cases performance specifications, such as paper OCF and EP cartridge usage, are specified to
be measured at an ambient condition.

Electrical and power specifications

The following table specifies nominal average power requirements for the basic printer configurations. All power levels are shown in Watts (W). Maximum current is given in Amperes (A).
Printing states C746n/dn/dtn Lexmark C748e/de/dte
Off 0W 0W
Sleep mode 6.8W 7.3W
Hibernate mode 0.55W 0.55W
Ready Mode 48W 48W
Simplex Printing 535W 535W
Duplex Printing 420W 420W
Typical Electricity Consumption Test
Typical Electricity Consumption Test (Eco-Mode)
Average current while printing (110 Volts)
Average current while printing (120 Volts)
Average current while printing (230 Volts)
Low-voltage models
3.561 kwh / wk 3.687 kwh / wk
2.375 kwh / wk 2.491 kwh / wk
8.3 A 8.3 A
7.5 A 7.5 A
3.8 A 3.8 A
110 to 127 V at 50 to 60 Hertz (Hz) nominal
99 to 139.7 V, extreme
100 V at 50 to 60 Hertz (Hz) nominal
90 to 121 V, extreme
High-voltage models
220 to 240 V at 50 to 60 Hz (not available in all countries)
198 to 259 V, extreme
Notes:
Using a power converter or inverter with the Lexmark C740 Series printers is not recommended.
The C740 series duplex models (C746dn, C746dtn, C748de, C748dte) are Energy Star Qualified.
All models ship with Sleep Mode = On.
The default time out to Sleep mode is 30 minutes.
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Acoustic specifications

All acoustic measurements are made in accordance with ISO 7779:1999—Accoustics : Measure ment of air borne noise emitted by information technology and telecommunications and reported in conformance with ISO 9296:
1988-04-15—Accoustics Declared noise emission values of computer and business equipment.
Operating mode
1 meter average sound pressur e
(dBA)
Declared sound pow er l evel
C746
Idle 32 dB 4.8 Bels
Simplex printing (mono) 53 dB 6.8 Bels
Simplex printing (color) 54 dB 6.8 Bels
Duplex printing (mono) 54 dB 6.9 Bels
Duplex printing (color) 55 dB 6.9 Bels
Quiet mode printing (mono) 48 dB 6.3 Bels
Quiet mode printing (color) 48 dB 6.3 Bels
C748
Idle 32 dB 4.8 Bels
Simplex printing (mono) 54 dB 6.8 Bels
Simplex printing (color) 55 dB 6.9 Bels
Duplex printing (mono) 53 dB 6.9 Bels
Duplex printing (color) 55 dB 6.9 Bels
(Bels)
Quiet mode printing (mono) 47 dB 6.3 Bels
Quiet mode printing (color) 48 dB 6.3 Bels
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Media specifications

Paper designed for use with xerographic copiers should provide satisfactory print quality and feed reliability. Other types of media may be suitable. It is recommended that users test any particular brand for suitability to their applications. Refer to the printer User's Guide for additional media specifications.
Paper
Follow the media guidelines below for successful printing:
Rough, highly textured, limp, or pre-curled papers will result in lower print quality and more frequent paper
feed failures.
Colored papers must be able to withstand 190° C (374° F) fusing temperature.
Preprinted forms and letterheads must be able to withstand 190° C (374° F) fusing temperature and should
be selected using guidelines found in the printer User’s Guide. The chemical process used in preprinting
may render some papers unsuitable for use.
Unsuitable papers include:Multi-part forms and documentsChemically treated papers; coatedSynthetic and thermal papersA5 paper less than 80 g/mRecycled paper less than 75 g/mPreprinted papers requiring a high degree of registration.Recycled paper less than 80 g/m
2
(21 lb)
2
(20 lb)
2
(21 lb) may cause unacceptable results.
Envelopes
All envelopes should be new, unused, and without package damage.
Envelopes with excessive curl or twist exceeding 6 mm, those stuck together, those with bent corners or
nicked edges, or those that interlock should not be used.
Minimum weight: 60 g/m2 (16 lb.)
The following envelopes should not be used:
Envelopes with windows, holes, perforations, cutouts, or deep embossing
Envelopes with metal clasps, string ties, or metal folding bars
Envelopes with exposed flap adhesive when the flap is in the closed position.
For best results, printing on new 90 g/m2 (24 lb.) sulfite or 25% cotton bond envelopes is recommended.
Under high humidity conditions (over 60%), envelopes may seal during printing.
Transparencies
Use letter or A4-size transparencies for color laser printers only.
See Ordering Information for the recommended transparencies for the Lexmark C746x/C748x laser
printers.
Do not use inkjet transparencies.
Labels
Labels should be selected using guidelines found in the User's Guide or the Card Stock and Label Guide, and
tested for acceptability.
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Using recycled paper and other office papers
Recycled office paper produced specifically for use in laser (electrophotographic) printers may be used in your printer. However, no blanket statement can be made that all recycled paper will feed well.
Generally, the following property guidelines apply to recycled paper.
Low moisture content (4–5%)
Suitable smoothness (100–200 Sheffield units, or 140–350 Bendtsen units, European)
Note: Some much smoother papers (such as premium 24 lb laser papers, 50–90 Sheffield units) and
much rougher papers (such as premium cotton papers, 200–300 Sheffield units) have been engineered to work very well in laser printers, despite surface texture. Before using these types of paper, consult your paper supplier.
Suitable sheet-to-sheet coefficient of friction (0.4–0.6)
Sufficient bending resistance in the direction of feed
2
Recycled paper, paper of lower weight (<60 g/m paper that is cut grain-short for portrait (or short-edge) fed printers may have lower bending resistance than is required for reliable paper feeding. Before using these types of paper for laser (electrophotographic) printing, consult your paper supplier. Remember that these are general guidelines only and that paper meeting these guidelines may still cause paper feeding problems in any laser printer (for example, if the paper curls excessively under normal printing conditions).
[16 lb bond]) and/or lower caliper (<3.8 mils [0.1 mm]), and
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Input and output capacities

The following table describes the media options that each model supports, and the estimated capacities in stand and maximum configurations. Capacity may vary and is subject to media specifications and printer operating environment. The capacities are based on plain paper at 75g/m
Standard input sources
Primary tray capacity (sheets) 550
Multipurpose feeder capacity (sheets) 100
2
.
Number of standard sources (primary tray
2
and multipurpose feeder)
Total standard capacity (sheets) 650
Optional input sources
550-Sheet Drawer (sheets) 550
High-capacity input tray (HCIT) (sheets) 2,000
Specialty Media Drawer
Maximum number of 550-sheet drawers
a
(sheets) 550 (or 85 envelopes)
4
(including Speciality Media Drawer)
Maximum number of high-capacity input
1
tray (must be installed on the bottom)
Maximum number of standard and
6
optional input sources
Maximum capacity for standard and
4,300
options input sources (sheets)
b
Standard output bin capacity (sheets)
300
Maximum output bin capacity (sheets) 300
Duplex capability Standard for
C746dn,C746dtn,C748de,and
C748dte models
a
Each 550-sheet Specialty Media Drawer replaces one 550-sheet option.
b
The output bin capacity may be reduced by 50 sheets when the duplex feature is in use.
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