HP 4500 Service Manual
4500, 4500 N, 4500 DN Printer
Service Manual
HP Color LaserJet 4500,
4500 N, 4500 DN Printer
Service Manual _____________
© Copyright Hewlett-Packard
Company, 1999
All Rights Reserved.
Reproduction, adaptation, or
translation without prior written
permission is prohibited, except
as allowed under the copyright
laws.
Part number: C4084-91017
First Edition, May 1999
Warranty
The information contained in
this document is subject to
change without notice.
Hewlett-Packard makes no
warranty of any kind with
respect to this information.
HEWLETT-PACKARD
SPECIFICALLY DISCLAIMS
THE IMPLIED WARRANTY OF
MERCHANTABILITY AND
FITNESS FOR A PARTICULAR
PURPOSE.
Hewlett-Packard shall not be
liable for any direct, indirect,
incidental, consequential, or
other damage alleged in
connection with the furnishing or
use of this information.
Trademark Credits
Adobe is a trademark of Adobe
Systems Incorporated which
may be registered in certain
jurisdictions.
Arial is a U.S. registered
trademark of the Monotype
Corporation.
CompuServe(TM) is a U.S.
trademark of CompuServe, Inc.
E
NERGY STAR
is a U.S.
registered service mark of the
United States Environmental
Protection Agency.
®
Microsoft
is a U.S. registered
trademark of Microsoft
Corporation.
®
PANTONE
* *Pantone, Inc.’s
check-standard trademark for
color.
PostScript is a trademark of
Adobe Systems Incorporated
which may be registered in
certain jurisdictions.
TrueType is a U.S. trademark of
Apple Computer, Inc.
UNIX is a registered trademark
in the United States and other
countries, licensed exclusively
through X/Open Company
Limited.
Windows, MS Windows, and
Windows NT are U.S. registered
trademarks of Microsoft
Corporation.
Hewlett-Pack ard Company
11311 Chinden Boulevard
Boise, Idaho 83714 U.S.A.
Conventions
This manual uses the following conventions:
Color is used to emphasize items that are important to the material
under discussion.
Bold is used for emphasis, particularly in situations where
would be confusing.
Italic
type is used to indicate related documents or emphasis.
DISPLAY
display.
Commands you use on a computer k eyboard or on the printer control
panel are shown in
[Value +]
COURIER type indicates text that you type on a computer keyboard
exactly as shown.
Hint Hints are used to suggest an action that may simplify the process.
Note Notes contain important information set off from the text.
CAUTION Caution messages alert you to the possibility of damage to equipment
or loss of data.
WARNING! Warning messages alert you to the possibility of personal injury.
type indicates text as seen on the printer control panel
[Keycap]
.
. Two examples are
[Select]
italic
, and
type
iii
iv
Contents
List of figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
List of tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
1 Printer description
Printer features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Site requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Printer specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Printer assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Media requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Environmental Product Stewardship Program . . . . . . . . . . . . . . . . .21
Regulatory statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
2 Service approach
Service approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Parts and supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Technical assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
HP support and services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Warranty statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
HP maintenance agreements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
3 Installation and configuration
Unpack the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Connecting to a network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Enhanced I/O (EIO) configuration . . . . . . . . . . . . . . . . . . . . . . . . . .64
Printer drivers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Network configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Configuration tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Setting network security on the printer. . . . . . . . . . . . . . . . . . . . . . .70
4 Printer maintenance
Cleaning the printer and accessories. . . . . . . . . . . . . . . . . . . . . . . .74
Approximate replacement intervals for consumable items. . . . . . . .76
Locating consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Replacing consumable items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
DIMM configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
v
5 Theory of operation
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
Basic operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
Image formation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
Toner density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
Mechanical system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109
Paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121
DC controller subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137
Motors and fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138
Formatter system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .140
Power supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141
6 Removal and replacement
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145
Consumable assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .148
Covers, drawers, top, and front assemblies. . . . . . . . . . . . . . . . . .149
Right side assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .171
Left side assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .186
Rear assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200
Internal assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .205
7 Troubleshooting
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215
Troubleshooting process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .216
Printer error troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .221
Paper path troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .246
Image formation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . .251
Interface troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .274
Control panel troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . .279
Troubleshooting tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .288
Service mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .292
Diagnostics mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .301
Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .310
vi
8 Parts and diagrams
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .331
Ordering parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .332
Illustrations and parts lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .337
Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .363
Numerical parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .368
Index
List of figures
Figure 1-1 HP Color LaserJet 4500 family printers. . . . . . . . . . . . .2
Figure 1-2 Sample Label. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Figure 1-3 Space requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Figure 1-4 Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Figure 1-5 Rear view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Figure 3-1 Package contents . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Figure 3-2 Parallel cable with a “C” Connector. . . . . . . . . . . . . . .55
Figure 4-1 Location of Consumables . . . . . . . . . . . . . . . . . . . . . .77
Figure 4-2 Removing the formatter board. . . . . . . . . . . . . . . . . . .91
Figure 4-3 Do not remove the DIMM in slot #4. . . . . . . . . . . . . . .92
Figure 4-4 EDO and SDRAM memory modules . . . . . . . . . . . . . .92
Figure 5-1 Basic system operation . . . . . . . . . . . . . . . . . . . . . . . .97
Figure 5-2 Image formation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
Figure 5-3 Primary charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Figure 5-4 Laser exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
Figure 5-5 Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
Figure 5-6 Primary transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Figure 5-7 Secondary transfer . . . . . . . . . . . . . . . . . . . . . . . . . .103
Figure 5-8 Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Figure 5-9 ITB residual toner cleaning . . . . . . . . . . . . . . . . . . . .105
Figure 5-10 Waste toner to waste toner reservoir. . . . . . . . . . . . .106
Figure 5-11 Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
Figure 5-12 Toner density sensor . . . . . . . . . . . . . . . . . . . . . . . . .108
Figure 5-13 Photosensitive drum cartridge . . . . . . . . . . . . . . . . . .109
Figure 5-14 Waste toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110
Figure 5-15 Transfer unit function. . . . . . . . . . . . . . . . . . . . . . . . .111
Figure 5-16 Home position detection . . . . . . . . . . . . . . . . . . . . . .112
Figure 5-17 ITB unit life detection . . . . . . . . . . . . . . . . . . . . . . . . .113
Figure 5-18 Secondary transfer roller unit. . . . . . . . . . . . . . . . . . .114
Figure 5-19 ITB unit contact/separation unit . . . . . . . . . . . . . . . . .115
Figure 5-20 Toner carousel assembly. . . . . . . . . . . . . . . . . . . . . .116
Figure 5-21 Toner carousel operation. . . . . . . . . . . . . . . . . . . . . .117
Figure 5-22 Toner cartridge contact/separation function . . . . . . .118
Figure 5-23 Toner level detection/toner cartridge detection . . . . .119
Figure 5-24 Laser/scanner operation . . . . . . . . . . . . . . . . . . . . . .120
Figure 5-25 Paper jam sensors. . . . . . . . . . . . . . . . . . . . . . . . . . .122
Figure 5-26 Tray 2 (cassette) operation . . . . . . . . . . . . . . . . . . . .124
Figure 5-27 Tray 1 manual feed . . . . . . . . . . . . . . . . . . . . . . . . . .125
Figure 5-28 Laser paper detected. . . . . . . . . . . . . . . . . . . . . . . . .126
Figure 5-29 Overhead transparency sensor . . . . . . . . . . . . . . . . .127
Figure 5-30 Pick-up and feed system . . . . . . . . . . . . . . . . . . . . . .128
Figure 5-31 Fusing and delivery unit. . . . . . . . . . . . . . . . . . . . . . .131
Figure 5-32 Reversing and duplex pick-up operation . . . . . . . . . .133
Figure 5-33 Reversing operation. . . . . . . . . . . . . . . . . . . . . . . . . .134
vii
Figure 5-34 Side registration adjustment . . . . . . . . . . . . . . . . . . .135
Figure 5-35 Duplex feed roller pressure . . . . . . . . . . . . . . . . . . . .136
Figure 5-36 DC controller PCB . . . . . . . . . . . . . . . . . . . . . . . . . . .137
Figure 5-37 Motors and fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138
Figure 6-1 Phillips vs. Posidriv Screwdrivers . . . . . . . . . . . . . . .146
Figure 6-2 Top assembly cover removal and replacement. . . . .149
Figure 6-3 Left side cover removal and replacement . . . . . . . . .150
Figure 6-4 Right side cover removal and replacement . . . . . . . .151
Figure 6-5 Rear door removal and replacement . . . . . . . . . . . . .152
Figure 6-6 Right rear cover removal and replacement . . . . . . . .153
Figure 6-7 Drum drawer cover removal and replacement. . . . . .154
Figure 6-8 Drum drawer cover tabs and levers. . . . . . . . . . . . . .155
Figure 6-9 ITB drawer cover removal and replacement . . . . . . .156
Figure 6-10 Control panel removal and replacement . . . . . . . . . .157
Figure 6-11 Front right cover removal and replacement . . . . . . . .158
Figure 6-12 ITB drawer removal and replacement . . . . . . . . . . . .159
Figure 6-13 RFI shield removal and replacement . . . . . . . . . . . . .160
Figure 6-14 Laser/scanner assembly removal and replacement .161
Figure 6-15 DC controller removal and replacement . . . . . . . . . .162
Figure 6-16 Developing PCB removal and replacement (1 of 2). .163
Figure 6-17 Developing PCB removal and replacement (2 of 2). .164
Figure 6-18 Top cover switch assembly removal and
replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165
Figure 6-19 Drum drawer switch . . . . . . . . . . . . . . . . . . . . . . . . . .166
Figure 6-20 Drum drawer assembly removal and replacement
(1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .167
Figure 6-21 Drum drawer assembly removal and replacement
(2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .168
Figure 6-22 Densitometer removal and replacement (1 of 2) . . . .169
Figure 6-23 Densitometer removal and replacement (2 of 2) . . . .170
Figure 6-24 Formatter removal and replacement . . . . . . . . . . . . .171
Figure 6-25 Formatter pan assembly removal and replacement
(1 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173
Figure 6-26 Formatter pan assembly removal and replacement
(2 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .174
Figure 6-27 Formatter pan assembly removal and replacement
(3 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175
Figure 6-28 Formatter pan assembly removal and replacement
(4 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176
Figure 6-29 Power supply removal and replacement . . . . . . . . . .177
Figure 6-30 High-voltage power supply removal and
replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178
Figure 6-31 Drum drive assembly removal and replacement
(1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179
Figure 6-32 Drum drive assembly removal and replacement
(2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180
viii
Figure 6-33 Drum drive assembly removal and replacement
(3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180
Figure 6-34 Large fan removal and replacement (1 of 2) . . . . . . .181
Figure 6-35 Large fan removal and replacement (2 of 2) . . . . . . .182
Figure 6-36 Carousel drive assembly removal and replacement
(1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .183
Figure 6-37 Carousel drive assembly removal and replacement
(2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .184
Figure 6-38 Paper size switch removal and replacement . . . . . . .185
Figure 6-39 Switch plate assembly removal and replacement . . .186
Figure 6-40 Paper feed PCB removal and replacement (1 of 3). .187
Figure 6-41 Paper feed PCB removal and replacement (2 of 3 . .188
Figure 6-42 Paper feed PCB removal and replacement (3 of 3). .189
Figure 6-43 Fuser motor removal and replacement (1 of 2) . . . . .190
Figure 6-44 Fuser motor removal and replacement (2 of 2) . . . . .191
Figure 6-45 Paper path motor removal and replacement . . . . . . .192
Figure 6-46 Paper pick solenoid removal and replacement . . . . .193
Figure 6-47 ITB cleaning roller clutch removal and replacement .194
Figure 6-48 ITB clutch assembly removal and replacement
(1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .195
Figure 6-49 ITB clutch assembly removal and replacement
(2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .196
Figure 6-50 Transfer roller cam clutch removal and replacement .197
Figure 6-51 Left side gears removal and replacement (1 of 2) . . .199
Figure 6-52 Left side gears removal and replacement (2 of 2) . . .199
Figure 6-53 Right side fan removal and replacement (1 of 2). . . .200
Figure 6-54 Right side fan removal and replacement (2 of 2). . . .201
Figure 6-55 Left side fan removal and replacement (1 of 3) . . . . .202
Figure 6-56 Left side fan removal and replacement (2 of 3) . . . . .203
Figure 6-57 Left side fan removal and replacement (3 of 3) . . . . .203
Figure 6-58 Rear paper path assembly removal and
replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .204
Figure 6-59 Carousel housing assembly removal and
replacement (1 of 4). . . . . . . . . . . . . . . . . . . . . . . . . .205
Figure 6-60 Carousel housing assembly removal and
replacement (2 of 4). . . . . . . . . . . . . . . . . . . . . . . . . .206
Figure 6-61 Carousel housing assembly removal and
replacement (3 of 4). . . . . . . . . . . . . . . . . . . . . . . . . .207
Figure 6-62 Carousel housing assembly removal and
replacement (4 of 4). . . . . . . . . . . . . . . . . . . . . . . . . .207
Figure 6-63 Paper transport assembly removal and replacement .208
Figure 6-64 Paper pick rollers removal and replacement . . . . . . .209
Figure 6-65 Star wheel assembly removal and replacement . . . .210
Figure 6-66 Transfer roller removal and replacement. . . . . . . . . .211
Figure 6-67 Cam shaft removal and replacement. . . . . . . . . . . . .212
Figure 7-3 Paper jam sensors. . . . . . . . . . . . . . . . . . . . . . . . . . .246
Figure 7-4 Paper jam locations. . . . . . . . . . . . . . . . . . . . . . . . . .247
ix
Figure 7-5 Image formation. . . . . . . . . . . . . . . . . . . . . . . . . . . . .251
Figure 7-6 Color balance calibration page . . . . . . . . . . . . . . . . .259
Figure 7-7 Repetitive defect ruler . . . . . . . . . . . . . . . . . . . . . . . .269
Figure 7-8 OPC exposed to light. . . . . . . . . . . . . . . . . . . . . . . . .271
Figure 7-9 Light exposed due to the developer access door
left open. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .272
Figure 7-10 Cleaning blade mark . . . . . . . . . . . . . . . . . . . . . . . . .273
Figure 7-11 Menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .280
Figure 7-12 Printer configuration page . . . . . . . . . . . . . . . . . . . . .289
Figure 7-13 Service mode menu map. . . . . . . . . . . . . . . . . . . . . .292
Figure 7-14 Service menu map. . . . . . . . . . . . . . . . . . . . . . . . . . .293
Figure 7-15 Registration page. . . . . . . . . . . . . . . . . . . . . . . . . . . .298
Figure 7-17 Sensor locations . . . . . . . . . . . . . . . . . . . . . . . . . . . .310
Figure 7-18 Printer solenoids and cluches . . . . . . . . . . . . . . . . . .312
Figure 7-19 Printer motors and fans . . . . . . . . . . . . . . . . . . . . . . .313
Figure 7-20 Miscellaneous sensors and clutches . . . . . . . . . . . . .314
Figure 7-21 Intermediate transfer belt sensors . . . . . . . . . . . . . . .315
Figure 7-22 Miscellaneous sensors (with tray 1 front cover
removed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .316
Figure 7-23 PS6 and PS7 sensor location . . . . . . . . . . . . . . . . . .317
Figure 7-24 Miscellaneous switches . . . . . . . . . . . . . . . . . . . . . . .318
Figure 7-25 Miscellaneous switches and sensors. . . . . . . . . . . . .319
Figure 7-26 PS14 sensor location. . . . . . . . . . . . . . . . . . . . . . . . .320
Figure 7-27 Miscellaneous parts . . . . . . . . . . . . . . . . . . . . . . . . . .321
Figure 7-28 Imaging drum connector . . . . . . . . . . . . . . . . . . . . . .322
Figure 7-29 Rear door interlock switch defeat. . . . . . . . . . . . . . . .323
Figure 7-30 Right rear fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .324
Figure 7-31 Fuse (F1) and CB101 . . . . . . . . . . . . . . . . . . . . . . . .325
Figure 7-32 Fusing assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .326
Figure 7-33 DC controller PCB connectors. . . . . . . . . . . . . . . . . .327
Figure 7-34 General location of connectors . . . . . . . . . . . . . . . . .328
Figure 7-35 General location of duplexer and 500-sheet
paper feeder connectors . . . . . . . . . . . . . . . . . . . . . .329
Figure 7-36 500-sheet feeder wiring diagram . . . . . . . . . . . . . . . .330
Figure 8-1 Assembly location diagram (1 of 2) . . . . . . . . . . . . . .337
Figure 8-2 Assembly location diagram (2 of 2) . . . . . . . . . . . . . .338
Figure 8-3 PCB locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .339
Figure 8-4 External covers, panels, etc. . . . . . . . . . . . . . . . . . . .340
Figure 8-5 Top cover assembly. . . . . . . . . . . . . . . . . . . . . . . . . .342
Figure 8-6 Internal components (1 of 3) . . . . . . . . . . . . . . . . . . .344
Figure 8-7 Internal components (2 of 3) . . . . . . . . . . . . . . . . . . .346
Figure 8-8 Internal components (3 of 3) . . . . . . . . . . . . . . . . . . .348
Figure 8-9 Developing rotary assembly. . . . . . . . . . . . . . . . . . . .350
Figure 8-10 Paper pick-up assembly (1 of 3) . . . . . . . . . . . . . . . .352
Figure 8-11 Paper pick-up assembly (2 of 3) . . . . . . . . . . . . . . . .354
Figure 8-12 Paper pick-up assembly (3 of 3) . . . . . . . . . . . . . . . .356
Figure 8-13 Upper drawer assembly. . . . . . . . . . . . . . . . . . . . . . .358
x
Figure 8-14 MP tray paper pick-up assembly . . . . . . . . . . . . . . . .359
Figure 8-15 250-sheet cassette . . . . . . . . . . . . . . . . . . . . . . . . . .360
Figure 8-16 500-sheet paper feeder . . . . . . . . . . . . . . . . . . . . . . .361
Figure 8-17 Duplex unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .362
xi
List of tables
Table 1-1 Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Table 1-2 Model names and numbers . . . . . . . . . . . . . . . . . . . . . .5
Table 1-3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . .8
Table 1-4 Environmental specifications . . . . . . . . . . . . . . . . . . . . .8
Table 1-5 Consumable storage requirements . . . . . . . . . . . . . . . .9
Table 1-6 Printer dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Table 1-7 Acoustic emissions . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Table 1-8 Supported media specifications. . . . . . . . . . . . . . . . . .14
Table 1-9 Printing on transparencies. . . . . . . . . . . . . . . . . . . . . .17
Table 2-1 Related documentation and software . . . . . . . . . . . . .35
Table 2-2 HP FIRST fax numbers . . . . . . . . . . . . . . . . . . . . . . . .37
Table 2-3 HP support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Table 2-4 HP driver distribution center. . . . . . . . . . . . . . . . . . . . .39
Table 2-5 Customer support worldwide . . . . . . . . . . . . . . . . . . . .40
Table 4-1 Cleaning the printer . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Table 4-2 Approximate replacement interval for consumable
Table 5-1 Toner carousel assembly components . . . . . . . . . . .116
Table 5-2 Motors, solenoids, sensors, and switches . . . . . . . . .124
Table 5-3 Motors, solenoids, clutches, and sensors . . . . . . . . .125
Table 5-4 Solenoids, sensors, switches. . . . . . . . . . . . . . . . . . .129
Table 5-5 Paper size detection switches . . . . . . . . . . . . . . . . . .130
Table 5-6 Fusing and delivery unit components . . . . . . . . . . . .131
Table 5-7 Motors, solenoids, and sensors. . . . . . . . . . . . . . . . .133
Table 5-8 Motor and fan locations . . . . . . . . . . . . . . . . . . . . . . .138
Table 6-1. Types of screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . .147
Table 7-1 Pre-troubleshooting checklist. . . . . . . . . . . . . . . . . . .216
Table 7-2 Alphabetical printer error messages . . . . . . . . . . . . .222
Table 7-3 Numerical printer error messages . . . . . . . . . . . . . . .235
Table 7-4 Defect distance chart. . . . . . . . . . . . . . . . . . . . . . . . .270
Table 7-5 Communications checks . . . . . . . . . . . . . . . . . . . . . .274
Table 7-6 Information Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . .281
Table 7-7 Paper Handling Menu . . . . . . . . . . . . . . . . . . . . . . . .282
Table 7-8 Configuration settings . . . . . . . . . . . . . . . . . . . . . . . .283
Table 7-9 Printing Menu settings . . . . . . . . . . . . . . . . . . . . . . . .284
Table 7-10 I/O Menu settings. . . . . . . . . . . . . . . . . . . . . . . . . . . .285
Table 7-11 Calibration Menu settings . . . . . . . . . . . . . . . . . . . . .286
Table 7-12 Resets Menu settings . . . . . . . . . . . . . . . . . . . . . . . .287
Table 7-13 Formatter diagnostics . . . . . . . . . . . . . . . . . . . . . . . .302
Table 7-14 Engine diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . .303
Table 7-15 Paper path sensors and switches . . . . . . . . . . . . . . .306
Table 7-16 Paper size settings. . . . . . . . . . . . . . . . . . . . . . . . . . .307
Table 7-17 Sensor status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .308
Table 7-18 Sensor function and locations . . . . . . . . . . . . . . . . . .311
items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
xii
Table 7-19 Solenoid and clutch functions and locations . . . . . . .312
Table 7-20 Printer motors and fans . . . . . . . . . . . . . . . . . . . . . . .313
Table 7-21 Miscellaneous sensors and clutches. . . . . . . . . . . . .314
Table 7-22 Intermediate transfer belt sensors. . . . . . . . . . . . . . .315
Table 7-23 PS3 and PS4 description. . . . . . . . . . . . . . . . . . . . . .316
Table 7-24 PS6 and PS7 description. . . . . . . . . . . . . . . . . . . . . .317
Table 7-25 Switch description . . . . . . . . . . . . . . . . . . . . . . . . . . .318
Table 7-26 SW2, SW5, and PS13 description. . . . . . . . . . . . . . .319
Table 7-27 Density Sensor Location . . . . . . . . . . . . . . . . . . . . . .320
Table 7-28 Miscellaneous parts. . . . . . . . . . . . . . . . . . . . . . . . . .321
Table 7-29 Imaging drum connector . . . . . . . . . . . . . . . . . . . . . .322
Table 7-30 Fuse F1 and CB101 location. . . . . . . . . . . . . . . . . . .325
Table 7-31 110 volt fusing assembly . . . . . . . . . . . . . . . . . . . . . .326
Table 8-1 Consumables, accessories, and supplies . . . . . . . . .333
Table 8-2 Types of screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . .336
Table 8-3 PCB assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .339
Table 8-4 Printer cover and door. . . . . . . . . . . . . . . . . . . . . . . .341
Table 8-5 Top cover components . . . . . . . . . . . . . . . . . . . . . . .343
Table 8-6 Internal components (1 of 3) . . . . . . . . . . . . . . . . . . .345
Table 8-7 Internal components (2 of 3) . . . . . . . . . . . . . . . . . . .347
Table 8-8 Internal components (3 of 3) . . . . . . . . . . . . . . . . . . .349
Table 8-9 Developing rotary assembly . . . . . . . . . . . . . . . . . . .351
Table 8-10 Paper pick-up assembly (1 of 3) . . . . . . . . . . . . . . . .353
Table 8-11 Paper pick-up assembly (2 of 3) . . . . . . . . . . . . . . . .354
Table 8-12 Paper pick-up assembly (3 of 3) . . . . . . . . . . . . . . . .357
Table 8-13 Upper drawer assembly. . . . . . . . . . . . . . . . . . . . . . .358
Table 8-14 MP tray paper pick-up assembly . . . . . . . . . . . . . . . .359
Table 8-15 250-sheet cassette . . . . . . . . . . . . . . . . . . . . . . . . . .360
Table 8-16 500-sheet paper feeder . . . . . . . . . . . . . . . . . . . . . . .361
Table 8-17 Duplex unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .362
Table 8-18 Alphabetical parts list. . . . . . . . . . . . . . . . . . . . . . . . .363
Table 8-19 Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . .368
xiii
xiv
1
Printer description
Chapter contents
Printer features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Model and serial numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Site requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Space requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Environmental specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Consumable storage requirements . . . . . . . . . . . . . . . . . . . . . . .9
Printer specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Printer assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Media requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Selecting print media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Supported media weights and sizes . . . . . . . . . . . . . . . . . . . . .14
Non-supported media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Printing on special media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Environmental Product Stewardship Program . . . . . . . . . . . . . . . . .21
Regulatory statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
FCC regulations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Canadian DOC regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
VCCI statement (Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Korean EMI statement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Laser safety statement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Material Safety Data Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Toner safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Laser Statement for Finland. . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Chapter 1 Printer description 1
Printer features
The HP LaserJet 4500 printer family pictured in Figure 1-1 has three
models.
z
The HP LaserJet 4500 printer is the base model, and includes
32 MB of RAM.
z
The HP LaserJet 4500 N printer includes the base model with an
HP JetDirect 600N Print Server (network card), and includes
64 MB of RAM.
z
The HP LaserJet 4500 DN printer includes the base model with
an HP JetDirect 600N Print Server (network card), a 500-sheet
paper feeder, a duplex unit, and includes 64 MB of RAM.
1
Figure 1-1 HP Color LaserJet 4500 family printers
1 HP Color LaserJet 4500 and 4500 N printers
2 HP Color LaserJet 4500 DN printer
2
2 Printer features
This printer combines the quality and reliability of Hewlett-Packard
printers with the features listed in Table 1-1 below. For more
information on printer features, refer to the Hewlett-Packard website
at http://www.hp.com.
Table 1-1 Printer features
Feature Description
Connectivity
Duplex
Environmental
Fonts
Memory—standard
●
Bidirectional parallel port (requires a “C” connector)
●
Two enhanced input/output (EIO) slots
●
Optional HP JetDirect 600N Print Server (network card)
(included with the HP Color LaserJet 4500 N and 4500 DN
printers)
●
Optional duplex unit; mounts directly beneath the printer for
two-sided printing
●
Requires 40 MB of memory. 64 MB of memory is
recommended for optimal duplex printing.
Note: If the 500-sheet paper feeder (Tray 3) is installed, the
duplex unit must be positioned between the printer and Tray 3.
●
PowerSave setting (meets E
●
High content of recyclable components and materials
●
80 internal fonts
●
HP FontSmart software
●
32 MB RAM (Base)
●
Memory Enhancement T echnology (MEt), which automatically
NERGY STAR
guidelines)
compresses data to use RAM more efficiently
Memory—optional
●
Install 4, 8, 16, 32, or 64 MB DIMMs into the printer’s three
DIMM slots. Synchronous SDRAM modules do not need to be
configured in pairs (in corresponding left and right slots). The
printer will only recognize 208 MB of RAM. If you install more
than 208 MB of RAM, it will not be used by the printer.
CAUTION: The HP Color LaserJet printer uses 100-pin,
non-parity, synchronous SDRAM DIMMs. Extended Data
Output (EDO) DIMMs are not supported.
Chapter 1 Printer description 3
Table 1-1 Printer features (continued)
Feature Description
Paper handling—input
(tray capacity)
Paper handling—output
(face-down, correct order
output)
Printer language support
Paper sizes supported
Print speed—
monochrome printing
The capacities will vary depending on the media being used (for
example, transparencies, labels, heavier media, and envelopes):
●
Tr ay 1:* 150-sheet multipurpose tray
●
Tr ay 2:* 250-sheet standard cassette
●
Tr ay 3:* Optional 500-sheet paper feeder
*Quantities based on 75 g/m
●
Top output bin holds up to 250 sheets of standard paper
●
Rear output bin holds up to 100 sheets of standard paper.
2
(20 lb.) media.
(The output is in reverse order, facing up.)
●
HP PCL5c
●
PostScript™ Emulation
●
Auto language switching
●
A4/Letter
●
Legal
●
Executive
●
JIS B5
●
A5
●
Custom (B5 ISO)
●
16 pages per minute (ppm)
●
8 ppm for transparencies, heavy paper, and glossy paper
Print speed—
color printing
●
4 ppm
●
2 ppm for transparencies, heavy paper, and glossy paper
Standard interfaces The printer comes equipped with two enhanced
input/output (EIO) slots
Note: If the printer is not configured with a network interface card,
connect the printer using a bidirectional parallel cable (IEEE-1284
compliant) with a “C” connector.
4 Printer features
Identification
Model and serial numbers
The model number and serial numbers are listed on identification
labels located on the rear of the printer. The model number is
alphanumeric, such as C4084A for the HP Color LaserJet 4500. The
serial number contains information about the country of origin, the
revision level, the production code, and the production number of the
printer.
Table 1-2 Model names and numbers
Model Name Model Number
HP Color LaserJet 4500 C4084A
HP Color LaserJet 4500 N C4089A
HP Color LaserJet 4500 DN C4094A
The identification labels on the rear of the printer also contain power
rating and regulatory information as shown in Figure 1-2.
CAUTION Converting the voltage on the printer can damage the printer. Do not
use any voltage other than the operating voltage. Any attempt to
convert operating voltages will void the product warranty
(for example, changing a 110V printer to a 220V printer).
Figure 1-2 Sample Label
Chapter 1 Printer description 5
Site requirements
The printer must be kept in a proper location to maintain the
performance level that has been set at the factory. In particular, be
sure that the environment adheres to the specifications listed in this
chapter.
Below are recommendations for the printer location and placement.
z
A well-ventilated, dust-free area.
z
A hard, level surface (not more than a 2° angle):
• For the HP Color LaserJet 4500 and 4500 N, the surf ace m ust
support 51 kg (112 lb).
• For the HP Color LaserJet 4500 DN, the surface must support
77 kg (169 lb).
• The surface must support all four corners of the 500-sheet
paper feeder.
z
A constant temperature and humidity. (Do not install near water
sources, humidifiers, air conditioners, refrigerators, or other major
appliances.)
z
Away from direct sunlight, dust, open flames, or ammonia fumes.
z
Away from walls or other objects. There must be enough space
around the printer for proper access and ventilation. See Figure
1-3 on page 7.
z
Away from the direct flow of exhaust from air ventilation systems.
6 Site requirements
Space requirements
The printer must have the following amounts of space above and
around it.
1
2
Figure 1-3 Space requirements
1 Top view
2 Side view
Chapter 1 Printer description 7
Electrical specifications
Table 1-3 lists the electrical specifications required to run the printer
safely.
Table 1-3 Electrical specifications
Item 110-volt models 220-volt models
Power requirements 100-127 V (+/- 10%)
50/60 Hz (+/- 2 Hz)
Power consumption
(typical)
During printing
During standby
During PowerSave
Minimum recommended
circuit capacity for typical
product
1
When
the printer is in standby (off) mode, a minimal amount of energy is
still consumed.
1
470 W (average)
80 W (average)
< 45 W
16.0 A at 120 V 7.1 A at 220 V
220-240 V (+/- 10%)
50/60 Hz (+/- 2 Hz)
480 W (average)
90 W (average)
< 45 W
Environmental specifications
Keep the printer within the environmental conditions shown in
Table 1-4 for optimum performance.
Table 1-4 Environmental specifications
Item Operating
Temperature
Recommended
Allowed
Humidity
Recommended
Allowed
Altitude
Allowed 0 to 3100 m
20 to 26° C (68 to 79° F)
15 to 30° C (59 to 86° F)
20 to 50% RH
10 to 80% RH
(0 to 10,000 ft)
8 Site requirements
Consumable storage requirements
The life of consumables is greatly affected by their storage
environment. Use Table 1-5 to determine the shelf life of stored
consumables.
Table 1-5 Consumable storage requirements
Item Storage time Storage condition
Temperature Normal (maximum of
2.5 years)
Severe (maximum of
18 days)
Maximum temperature
change rate
Humidity Normal (maximum of
Atmospheric pressure 460 to 760 mm Hg (18.1 to 29.9 in Hg)
Average storage time 1 year
40 to 15° C (104 to 59° F) within 3 minutes
-20 to 25° C (-4 to 77° F) within 3 minutes
2.5 years)
Severe (maximum of
18 days)
0 to 35° C (32 to 95° F)
High 35 to 40° C (95 to
104° F)
Low 0 to -20° C (32 to
-4° F)
35 to 85% RH
High 85 to 95% RH
Low 10 to 35% RH
Chapter 1 Printer description 9
Printer specifications
Table 1-6 describes the dimensions of the printer.
Table 1-6 Printer dimensions
HP Color LaserJet
4500, 4500 N
Height 395 mm (15.6 inches) 578 mm (22.8 inches)
Width 500 mm (19.7 inches) 500 mm (19.7 inches)
Depth 559 mm (22 inches) 709 mm (27.9 inches)
Weight 57 kg (125 lb) 75 kg (165 lb)
HP Color LaserJet
4500 DN
Table 1-7 lists the acoustic emissions of the printer when it is printing
and when it is in standby mode.
Table 1-7 Acoustic emissions
Operating position
Printing
Standby
Bystander 1m
Printing
Standby
Sound power
Printing
Standby
Per ISO 9296, DIN 45635, T.19
L
58 dB(A)
PA
49 dB(A)
L
PA
Per ISO 7779, DIN 45635, T.19
L
52 dB(A)
PA
45 dB(A)
L
PA
Per ISO 9296
= 6.6 bels(A)
L
WAd
= 5.8 bels(A)
L
WAd
Note This product emits a sound intensity level,
printing. Do not place the printer in close proximity to users.
Maximum duty cycles is 35,000 pages per month.
10 Printer specifications
, at 6.4 bel during
L
WAd
Printer assemblies
Figures 1-4 and 1-5 show the location of each major assembly in the
printer. These assemblies are described in Chapter 3.
11
10
9
8
7
6
Figure 1-4 Front view
1 Top output bin
2 Printer control panel
3 Power switch (standby button)
4 Duplex unit drawer (optional on 4500 and 4500 N models)
1
2
3
4
5
(shown with 500-sheet paper feeder and duplex unit)
5 Tray 3 (500-sheet paper feeder, optional on 4500 and 4500 N
models)
6 Tray 2 (250 sheets of standard paper)
7 ITB drawer (transfer belt access)
8 Tray 1 (150-sheet multipurpose tray)
9 Drum drawer (imaging drum access)
10 Top assembly cover release button
11 Top assembly cover (toner cartridge access)
Chapter 1 Printer description 11
8
9
1
7
Figure 1-5 Rear view
1 Rear door (fuser access)
2 Rear output bin door
3 Cover for duplex unit
4 Power receptacle for duplex unit
5 Duplex power cord to the printer
6 Printer power receptacle
6
5
(shown with 500-sheet paper feeder and duplex unit)
4
2
3
7 EIO slots
8 Parallel connector (“C” connector)
9 Memory access
12 Printer assemblies
Media requirements
Selecting print media
You can use many types of paper and other print media with this
printer. This section provides guidelines and specifications for
selecting and using different print media.
Before purchasing any media or specialized forms in quantity, verify
that your paper supplier obtains and understands the print media
requirements specified in the
Guide
. The guide is available through HP Direct. See Appendix D in
the online user guide for ordering information.
It is possible that media could meet all of the guidelines in this chapter
and still not print satisfactorily. This may be due to abnormal
characteristics of the printing environment or to other variables over
which Hewlett-Packard has no control (for example, extremes in
temperature and humidity).
Hewlett-Packar d recommends testing an y media before b uying it
in large quantities.
CAUTION Using media that does not conform to the specifications listed here and
in the
HP LaserJet Family Paper Specification Guide
problems that require service. This service is not covered by the
Hewlett-Packard warranty or service agreements.
HP LaserJet Family P aper Specification
can cause
Media specifications
For optimum results, use conventional 75 g/m2 (20 lb) xerographic
paper. Verify that the paper is of good quality and is free of cuts,
nicks, tears, spots, loose particles, dust, wrinkles, curls, or bent
edges. Avoid fanning the print media before loading it into the paper
trays.
Chapter 1 Printer description 13
Supported media weights and sizes
Table 1-8 shows the media types and sizes supported by the printer
and the printer accessories.
Table 1-8 Supported media specifications
Tray Supported media Media
specifications
Tray 1 Pap er
A4/Letter
Legal
Executive
JIS B5
A5
Custom
Minimum Size:
76 x 127 mm (3 x 5 in)
Maximum Size:
216 x 356 mm (8.5 x 14)
Transparencies
Glossy Paper
Envelopes
(Tray 1 only)
Com10
Monarch
C5
DL
B5 (JIS)
Labels
(Tray 1 only)
Cardstock (Postcards)
(Tray 1 only)
Single-sided:
60 to 159
(16 to 42 lb)
If less than or equal
to 148 mm width:
60 to 176 g/m
(16 to 47 lb)
If more than or equal
to 148 mm width:
60 to 135 g/m
(16 to 36 lb)
Two-sided:
64 to 105
(17 to 28 lb)
0.13 mm (5 mil)
120 g/m
(32 lb/80 lb text)
Maximum weight:
90 g/m
Maximum weight:
176 g/m
Maximum size:
200 mm x 148 mm
(7.87 in x 5.82 in)
2
2
(24 lb)
2
2
g/m
2
2
2
g/m
(47 lb)
Capacity
2
150 sheets of 75 g/m
(20 lb) paper
Limit of 50
Limit of 50 sheets
Limit of 10
Limit of 50
Do not load more than the
maximum stack height of
15 mm (0.6 in)
14 Media requirements
Loading...