HP laserjet 4500 schematic
4500, 4500 N, 4500 DN Printer
Service Manual
HP Color LaserJet 4500,
4500 N, 4500 DN Printer
Service Manual _____________
© Copyright Hewlett-Packard
Company, 1998
All Rights Reserved.
Reproduction, adaptation, or
translation without prior written
permission is prohibited, except
as allowed under the copyright
laws.
Part number: C4084-90958
First Edition, 7/98
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
italic
type is used to indicate related documents or emphasis.
type
DISPLAY
display.
Commands you use on a computer k eyboard or on the printer control
panel are shown in [Keycap]. Two examples are [Select], and
[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
EN iii
iv EN
Contents
List of figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .viii
List of tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiii
1 Printer description
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Printer features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Site requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Printer specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Printer assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Media requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Environmental Product Stewardship Program . . . . . . . . . . . . . . . . .22
Regulatory statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
2 Service approach
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
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
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Unpack the printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
Enhanced I/O (EIO) configuration . . . . . . . . . . . . . . . . . . . . . . . . . .64
Printer drivers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66
Network configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Configuration tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Setting network security on the printer. . . . . . . . . . . . . . . . . . . . . . .70
EN v
4 Printer maintenance
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Cleaning the printer and accessories. . . . . . . . . . . . . . . . . . . . . . . .72
Approximate replacement intervals for consumable items. . . . . . . .74
Locating consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Replacing consumable items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
DIMM configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
5 Theory of operation
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .92
Basic operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93
Image formation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
Toner density . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104
Mechanical system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
Paper path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117
DC controller subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132
Motors and fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
Formatter system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
Power supplies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
6 Removal and replacement
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .138
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139
Consumable assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .142
Covers, drawers, top, and front assemblies. . . . . . . . . . . . . . . . . .143
Right side assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .164
Left side assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .178
Rear assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .192
Internal assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .197
7 Troubleshooting
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .207
Troubleshooting process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .208
Troubleshooting power-on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .214
Printer error troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .215
Paper path troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .240
Image formation troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . .244
Interface troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .264
Control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .269
Troubleshooting tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .275
vi EN
8 Parts and diagrams
Ordering parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .318
Illustrations and parts lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .324
Alphabetical parts list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .347
Numerical parts list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .352
Index
EN vii
List of figures
Figure 1-1 HP Color LaserJet 4500 family printers. . . . . . . . . . . . .3
Figure 1-2 Space requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Figure 1-3 Front view (shown with 500-sheet paper feeder
Figure 1-4 Rear view (shown with 500-sheet paper feeder
Figure 3-1 Package contents . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Figure 3-2 Parallel cable with a “C” Connector . . . . . . . . . . . . . . .56
Figure 4-1 Location of Consumables . . . . . . . . . . . . . . . . . . . . . .75
Figure 4-2 Do not remove the DIMM in slot #4. . . . . . . . . . . . . . .89
Figure 5-1 Basic system operation . . . . . . . . . . . . . . . . . . . . . . . .93
Figure 5-2 Image formation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .94
Figure 5-3 Primary charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
Figure 5-4 Laser exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
Figure 5-5 Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
Figure 5-6 Primary transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
Figure 5-7 Secondary transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . .99
Figure 5-8 Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
Figure 5-9 ITB residual toner cleaning . . . . . . . . . . . . . . . . . . . .101
Figure 5-10 Waste toner to waste toner reservoir. . . . . . . . . . . . .102
Figure 5-11 Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103
Figure 5-12 Toner density sensor . . . . . . . . . . . . . . . . . . . . . . . . .104
Figure 5-13 Photosensitive drum cartridge . . . . . . . . . . . . . . . . . .105
Figure 5-14 Waste toner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Figure 5-15 Transfer unit function . . . . . . . . . . . . . . . . . . . . . . . . .107
Figure 5-16 Home position detection . . . . . . . . . . . . . . . . . . . . . .108
Figure 5-17 ITB unit life detection . . . . . . . . . . . . . . . . . . . . . . . . .109
Figure 5-18 Secondary transfer roller unit. . . . . . . . . . . . . . . . . . .110
Figure 5-19 ITB unit contact/separation unit . . . . . . . . . . . . . . . . .111
Figure 5-20 Toner carousel assembly. . . . . . . . . . . . . . . . . . . . . .112
Figure 5-21 Toner carousel operation. . . . . . . . . . . . . . . . . . . . . .113
Figure 5-22 Toner cartridge contact/separation function. . . . . . . .114
Figure 5-23 Toner level detection/toner cartridge detection . . . . .115
Figure 5-24 Laser/scanner operation . . . . . . . . . . . . . . . . . . . . . .116
Figure 5-25 Paper jam sensors. . . . . . . . . . . . . . . . . . . . . . . . . . .118
Figure 5-26 Tray 2 (cassette) operation . . . . . . . . . . . . . . . . . . . .120
Figure 5-27 Tray 1 manual feed . . . . . . . . . . . . . . . . . . . . . . . . . .121
Figure 5-28 Laser paper detected. . . . . . . . . . . . . . . . . . . . . . . . .122
Figure 5-29 Pick-up and feed system . . . . . . . . . . . . . . . . . . . . . .123
Figure 5-30 Pick-up and feed system . . . . . . . . . . . . . . . . . . . . . .124
Figure 5-31 Fusing and delivery unit. . . . . . . . . . . . . . . . . . . . . . .126
Figure 5-32 Reversing and duplex pick-up operation . . . . . . . . . .128
Figure 5-33 Reversing operation. . . . . . . . . . . . . . . . . . . . . . . . . .129
and duplex printing accessory) . . . . . . . . . . . . . . . . . .12
and duplex printing accessory) . . . . . . . . . . . . . . . . . .13
viii EN
Figure 5-34 Side registration adjustment . . . . . . . . . . . . . . . . . . .130
Figure 5-35 Duplex feed roller pressure . . . . . . . . . . . . . . . . . . . .131
Figure 5-36 DC controller PCB . . . . . . . . . . . . . . . . . . . . . . . . . . .132
Figure 5-37 Motors and fans. . . . . . . . . . . . . . . . . . . . . . . . . . . . .133
Figure 6-1 Phillips vs. Posidriv Screwdrivers . . . . . . . . . . . . . . .140
Figure 6-2 Top cover removal and replacement. . . . . . . . . . . . .143
Figure 6-3 Left side cover removal and replacement . . . . . . . . .144
Figure 6-4 Right side cover removal and replacement . . . . . . . .145
Figure 6-5 Rear door removal and replacement. . . . . . . . . . . . .146
Figure 6-6 Right side rear cover removal and replacement . . . .147
Figure 6-7 Upper front drawer cover removal and replacement .148
Figure 6-8 Upper front drawer cover tabs and levers . . . . . . . . .149
Figure 6-9 Middle front drawer cover removal and replacement.150
Figure 6-10 Control panel removal and replacement . . . . . . . . . .151
Figure 6-11 Front right cover removal and replacement. . . . . . . .152
Figure 6-12 Middle front drawer removal and replacement . . . . .153
Figure 6-13 RFI removal and replacement . . . . . . . . . . . . . . . . . .154
Figure 6-14 Laser/scanner assembly removal and replacement .155
Figure 6-15 DC controller removal and replacement . . . . . . . . . .156
Figure 6-16 Developing board removal and replacement (1 of 2).157
Figure 6-17 Developing board removal and replacement (2 of 2).158
Figure 6-18 Top door switch assembly removal and replacement159
Figure 6-19 Top drawer switch . . . . . . . . . . . . . . . . . . . . . . . . . . .160
Figure 6-20 Upper front drawer assembly removal and
replacement (1 of 2). . . . . . . . . . . . . . . . . . . . . . . . . .161
Figure 6-21 Upper front drawer assembly removal and
replacement (2 of 2). . . . . . . . . . . . . . . . . . . . . . . . . .161
Figure 6-22 Densitometer removal and replacement (1 of 2) . . . .162
Figure 6-23 Densitometer removal and replacement (2 of 2) . . . .163
Figure 6-24 Formatter removal and replacement . . . . . . . . . . . . .164
Figure 6-25 Formatter pan assembly removal and replacement
(1 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .165
Figure 6-26 Formatter pan assembly removal and replacement
(2 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .166
Figure 6-27 Formatter pan assembly removal and replacement
(3 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .167
Figure 6-28 Formatter pan assembly removal and replacement
(4 of 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .168
Figure 6-29 Power supply removal and replacement . . . . . . . . . .169
Figure 6-30 High voltage power supply removal and
replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .170
Figure 6-31 Drum drive assembly removal and replacement
(1 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .171
Figure 6-32 Drum drive assembly removal and replacement
(2 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172
Figure 6-33 Drum drive assembly removal and replacement
(3 of 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .172
EN ix
Figure 6-34 Large fan removal and replacement (1 of 2) . . . . . . .173
Figure 6-35 Large fan removal and replacement (2 of 2) . . . . . . .174
Figure 6-36 Carousel drive assembly removal and replacement
(1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175
Figure 6-37 Carousel drive assembly removal and replacement
(2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .176
Figure 6-38 Paper size switch removal and replacement . . . . . . .177
Figure 6-39 Switch plate assembly removal and replacement . . .178
Figure 6-40 Paper feed PCB removal and replacement (1 of 3). .179
Figure 6-41 Paper feed PCB removal and replacement (2 of 3 . .180
Figure 6-42 Paper feed PCB removal and replacement (3 of 3). .181
Figure 6-43 Fuser motor removal and replacement (1 of 2) . . . . .182
Figure 6-44 Fuser motor removal and replacement (2 of 2) . . . . .183
Figure 6-45 Paper path motor removal and replacement . . . . . . .184
Figure 6-46 Paper pick solenoid removal and replacement . . . . .185
Figure 6-47 ITB cleaning roller clutch removal and replacement .186
Figure 6-48 ITB clutch assembly removal and replacement
(1 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .187
Figure 6-49 ITB clutch assembly removal and replacement
(2 of 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .188
Figure 6-50 Transfer roller cam clutch removal and replacement.189
Figure 6-51 Left side gears removal and replacement (1 of 2) . . .191
Figure 6-52 Left side gears removal and replacement (2 of 2) . . .191
Figure 6-53 Right side fan removal and replacement (1 of 2). . . .192
Figure 6-54 Right side fan removal and replacement (2 of 2). . . .193
Figure 6-55 Left side fan removal and replacement (1 of 3) . . . . .194
Figure 6-56 Left side fan removal and replacement (2 of 3) . . . . .195
Figure 6-57 Left side fan removal and replacement (3 of 3) . . . . .195
Figure 6-58 Rear paper path assembly removal and
replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .196
Figure 6-59 Carousel housing assembly removal and
replacement (1 of 4). . . . . . . . . . . . . . . . . . . . . . . . . .197
Figure 6-60 Carousel housing assembly removal and
replacement (2 of 4). . . . . . . . . . . . . . . . . . . . . . . . . .198
Figure 6-61 Carousel housing assembly removal and
replacement (3 of 4). . . . . . . . . . . . . . . . . . . . . . . . . .199
Figure 6-62 Carousel housing assembly removal and
replacement (4 of 4). . . . . . . . . . . . . . . . . . . . . . . . . .199
Figure 6-63 Paper transport assembly removal and replacement 200
Figure 6-64 Paper pick rollers removal and replacement . . . . . . .201
Figure 6-65 Star wheel assembly removal and replacement . . . .202
Figure 6-66 Transfer roller removal and replacement. . . . . . . . . .203
Figure 6-67 Cam shaft removal and replacement) . . . . . . . . . . . .204
Figure 7-3 Paper jam sensors. . . . . . . . . . . . . . . . . . . . . . . . . . .240
Figure 7-4 Paper jam locations . . . . . . . . . . . . . . . . . . . . . . . . .241
Figure 7-5 Color balance calibration page . . . . . . . . . . . . . . . . .249
Figure 7-6 Repetitive defect ruler . . . . . . . . . . . . . . . . . . . . . . . .259
x EN
Figure 7-7 Note 1, Defect pitch chart . . . . . . . . . . . . . . . . . . . . .261
Figure 7-8 Note 2, Defect pitch chart . . . . . . . . . . . . . . . . . . . . .262
Figure 7-9 Note 3, Defect pitch chart . . . . . . . . . . . . . . . . . . . . .263
Figure 7-10 Menu map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .270
Figure 7-11 Service menu map. . . . . . . . . . . . . . . . . . . . . . . . . . .271
Figure 7-12 Printer configuration page . . . . . . . . . . . . . . . . . . . . .276
Figure 7-13 Service mode menu map. . . . . . . . . . . . . . . . . . . . . .278
Figure 7-14 Registration page. . . . . . . . . . . . . . . . . . . . . . . . . . . .282
Figure 7-16 Sensors locations . . . . . . . . . . . . . . . . . . . . . . . . . . .292
Figure 7-17 Printer Solenoids . . . . . . . . . . . . . . . . . . . . . . . . . . . .294
Figure 7-18 Printer motors and fans . . . . . . . . . . . . . . . . . . . . . . .295
Figure 7-19 Miscellaneous sensors and clutches . . . . . . . . . . . . .296
Figure 7-20 Intermediate transfer belt sensors . . . . . . . . . . . . . . .297
Figure 7-21 Miscellaneous sensors (with Tray 1 front cover
removed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .298
Figure 7-22 PS6 and PS7 sensor location . . . . . . . . . . . . . . . . . .299
Figure 7-23 Miscellaneous switches . . . . . . . . . . . . . . . . . . . . . . .300
Figure 7-24 Miscellaneous switches and sensors. . . . . . . . . . . . .301
Figure 7-25 PS14 sensor location. . . . . . . . . . . . . . . . . . . . . . . . .302
Figure 7-26 Miscellaneous parts. . . . . . . . . . . . . . . . . . . . . . . . . .303
Figure 7-27 Fan 3/eeprom connector and chassis connector. . . .304
Figure 7-28 Rear door interlock switch defeat . . . . . . . . . . . . . . .305
Figure 7-29 Right rear fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .306
Figure 7-30 Fuse (F1) and CB101 . . . . . . . . . . . . . . . . . . . . . . . .307
Figure 7-31 Fusing assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .308
Figure 7-32 DC controller PCB connectors. . . . . . . . . . . . . . . . . .309
Figure 7-33 High voltage PCB connectors . . . . . . . . . . . . . . . . . .309
Figure 7-34 General location of connectors . . . . . . . . . . . . . . . . .310
Figure 7-35 General location of duplexer and 500-sheet
paper feeder connectors . . . . . . . . . . . . . . . . . . . . . .311
Figure 7-36 Main wiring diagram (1 of 2) . . . . . . . . . . . . . . . . . . .312
Figure 7-37 Main wiring diagram (2 of 2) . . . . . . . . . . . . . . . . . . .313
Figure 7-38 Duplex printing accessory wiring diagram (1 of 2). . .314
Figure 7-39 Duplex printing accessory wiring diagram (2 of 2). . .315
Figure 7-40 500-sheet feeder wiring diagram . . . . . . . . . . . . . . . .316
Figure 8-1 Assembly location diagram (1 of 2) . . . . . . . . . . . . . .324
Figure 8-2 Assembly location diagram (2 of 2) . . . . . . . . . . . . . .325
Figure 8-3 PCB locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .326
Figure 8-4 External covers, panels, etc. . . . . . . . . . . . . . . . . . . .327
Figure 8-5 Top Cover Assembly . . . . . . . . . . . . . . . . . . . . . . . . .329
Figure 8-6 Internal components (1 of 3) . . . . . . . . . . . . . . . . . . .330
Figure 8-7 Internal components (2 of 3) . . . . . . . . . . . . . . . . . . .332
Figure 8-8 Internal components (3 of 3) . . . . . . . . . . . . . . . . . . .333
Figure 8-9 Developing rotary assembly . . . . . . . . . . . . . . . . . . .335
Figure 8-10 Paper pick-up assembly (1 of 3) . . . . . . . . . . . . . . . .337
Figure 8-11 Paper pick-up assembly (2 of 3) . . . . . . . . . . . . . . . .338
Figure 8-12 Paper pick-up assembly (3 of 3) . . . . . . . . . . . . . . . .340
EN xi
Figure 8-13 Upper drawer assembly. . . . . . . . . . . . . . . . . . . . . . .342
Figure 8-14 MP tray paper pick-up assembly . . . . . . . . . . . . . . . .343
Figure 8-15 Cassette. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .344
Figure 8-16 500-sheet paper feeder main body assembly . . . . . .345
Figure 8-17 Duplex unit main body printing accessory
assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .346
xii EN
List of tables
Table 1-1 Printer features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Table 1-2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . .9
Table 1-3 Environmental specifications. . . . . . . . . . . . . . . . . . . . .9
Table 1-4 Consumable storage requirements . . . . . . . . . . . . . . .10
Table 1-5 Printer dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Table 1-6 Acoustic emissions . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Table 1-7 Supported media specifications. . . . . . . . . . . . . . . . . .15
Table 1-8 Printing on transparencies. . . . . . . . . . . . . . . . . . . . . .18
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 . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Table 4-2 Approximate replacement interval for consumable
Table 5-1 Toner carousel assembly components . . . . . . . . . . .112
Table 5-2 Motors, solenoids, sensors, and switches. . . . . . . . .120
Table 5-3 Motors, solenoids, clutches, and sensors . . . . . . . . .121
Table 5-4 Solenoids, sensors, switches. . . . . . . . . . . . . . . . . . .124
Table 5-5 Paper size detection switches . . . . . . . . . . . . . . . . . .125
Table 5-6 Fusing and delivery unit components . . . . . . . . . . . .126
Table 5-7 Motors, solenoids, and sensors. . . . . . . . . . . . . . . . .128
Table 5-8 Motor and fan locations . . . . . . . . . . . . . . . . . . . . . . .133
Table 6-1. Types of screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . .141
Table 7-1 Alphabetical printer error messages . . . . . . . . . . . . .216
Table 7-2 Numerical printer error messages . . . . . . . . . . . . . . .229
Table 7-3 Defect pitch chart. . . . . . . . . . . . . . . . . . . . . . . . . . . .260
Table 7-4 Communications checks . . . . . . . . . . . . . . . . . . . . . .264
Table 7-5 Information menu. . . . . . . . . . . . . . . . . . . . . . . . . . . .272
Table 7-6 Paper handling menu. . . . . . . . . . . . . . . . . . . . . . . . .273
Table 7-7 Configuration settings . . . . . . . . . . . . . . . . . . . . . . . .274
Table 7-8 Engine diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . .285
Table 7-9 Paper path sensors and switches . . . . . . . . . . . . . . .287
Table 7-10 Paper size settings . . . . . . . . . . . . . . . . . . . . . . . . . .288
Table 7-11 Sensor status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .289
Table 7-12 Formatter diagnostics . . . . . . . . . . . . . . . . . . . . . . . .290
Table 7-13 Sensor function and locations . . . . . . . . . . . . . . . . . .292
Table 7-14 Solenoid and clutch functions and locations . . . . . . .294
Table 7-15 Printer motors and fans . . . . . . . . . . . . . . . . . . . . . . .295
Table 7-16 Miscellaneous sensors and clutches. . . . . . . . . . . . .296
Table 7-17 Intermediate transfer belt sensors. . . . . . . . . . . . . . .297
Table 7-18 PS3 and PS4 description. . . . . . . . . . . . . . . . . . . . . .298
Table 7-19 PS6 and PS7 description. . . . . . . . . . . . . . . . . . . . . .299
items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
EN xiii
Table 7-20 Switch description . . . . . . . . . . . . . . . . . . . . . . . . . . .300
Table 7-21 SW2, SW5, and PS13 description. . . . . . . . . . . . . . .301
Table 7-22 Density Sensor Location . . . . . . . . . . . . . . . . . . . . . .302
Table 7-23 Miscellaneous parts. . . . . . . . . . . . . . . . . . . . . . . . . .303
Table 7-24 Fan 3/eeprom connector and chassis connector. . . .304
Table 7-25 Fuse F1 and CB101 location . . . . . . . . . . . . . . . . . . .307
Table 7-26 110 volt fusing assembly . . . . . . . . . . . . . . . . . . . . . .308
Table 8-1 Consumable, accessories, and options. . . . . . . . . . .319
Table 8-2 Consumable and accessory part numbers . . . . . . . .321
Table 8-3 Types of screws. . . . . . . . . . . . . . . . . . . . . . . . . . . . .323
Table 8-4 PCB assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .326
Table 8-5 Printer cover and door . . . . . . . . . . . . . . . . . . . . . . . .327
Table 8-6 Top cover components . . . . . . . . . . . . . . . . . . . . . . .329
Table 8-7 Internal components (1 of 3) . . . . . . . . . . . . . . . . . . .330
Table 8-8 Internal components (2 of 3) . . . . . . . . . . . . . . . . . . .332
Table 8-9 Internal components (3 of 3) . . . . . . . . . . . . . . . . . . .333
Table 8-10 Developing rotary assembly. . . . . . . . . . . . . . . . . . . .335
Table 8-11 Paper pick-up assembly (1 of 3) . . . . . . . . . . . . . . . .337
Table 8-12 Paper pick-up assembly (2 of 3) . . . . . . . . . . . . . . . .338
Table 8-13 Paper pick-up assembly (3 of 3) . . . . . . . . . . . . . . . .340
Table 8-14 Upper drawer assembly. . . . . . . . . . . . . . . . . . . . . . .342
Table 8-15 MP tray paper pick-up assembly . . . . . . . . . . . . . . . .343
Table 8-16 Cassette. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .344
Table 8-17 500-sheet paper feeder main body assembly . . . . . .345
Table 8-18 Duplex unit body printing accessory assembly . . . . .346
Table 8-19 Alphabetical parts list. . . . . . . . . . . . . . . . . . . . . . . . .347
Table 8-20 Numerical parts list . . . . . . . . . . . . . . . . . . . . . . . . . .352
xiv EN
1
Printer description
Chapter contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Printer features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Model and serial numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Site requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Space requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Environmental specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Consumable storage requirements . . . . . . . . . . . . . . . . . . . . . .10
Printer specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Printer assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Media requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Selecting print media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Supported media weights and sizes . . . . . . . . . . . . . . . . . . . . .15
Non-supported media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Printing on special media. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Environmental Product Stewardship Program . . . . . . . . . . . . . . . . .22
Regulatory statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
FCC regulations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Canadian DOC regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
VCCI statement (Japan) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Korean EMI statement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Laser safety statement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Material Safety Data Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Toner safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Laser Statement for Finland. . . . . . . . . . . . . . . . . . . . . . . . . . . .29
EN
Chapter 1 Printer description 1
Overview
This chapter discusses the following topics:
z
Printer features
z
Identification
z
Site requirements
z
Printer specifications
z
Printer assemblies
z
Media requirements
z
Environmental Product Stewardship Program
z
Regulatory statements
z
Safety information
2 Overview
EN
Printer features
The HP LaserJet 4500 printer family pictured in Figure 1-1 has three
models.
The HP LaserJet 4500 printer is the base model.
z
The HP LaserJet 4500 N printer includes the base model with an
z
HP JetDirect 600N Print Server (network card).
The HP LaserJet 4500 DN printer includes the base model with
z
an HP JetDirect 600N Print Server (network card), a 500-sheet
paper feeder, and a duplex printing accessory.
1
2
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
EN
Chapter 1 Printer description 3
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 printing accessory; mounts directly beneath
the printer for two-sided printing
●
Requires 64 MB of memory
Note: If the 500-sheet paper feeder (Tray 3) is installed, the
duplex printing accessory 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
4 Printer features
●
Install 4, 8, 16, 32 or 64 MB DIMMs into the printer’s
three DIMM slots. Synchronous DRAM modules do not
need to be configured in pairs (in corresponding left and
right slots). Do not exceed 208 MB of total printer
memory.
EN
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
The capacities will vary depending on the media being
used (for example, transparencies, labels, heavier media,
and envelopes):
●
Tray 1: 150-sheet multipurpose tray. Use for 75 g/m
paper stock.
●
Tray 2: 250-sheet standard cassette
●
Tray 3: Optional 500-sheet paper feeder
●
Top output bin holds up to 250 sheets of standard paper
●
Rear output bin holds up to 100 sheets of standard paper.
(The output is in reverse order, facing up.)
●
HP PCL5c
●
PostScript(TM) Emulation
●
Auto language switching
●
A4/Letter
●
Legal
●
Executive
●
JIS B5
●
A5
●
Custom (B5 ISO)
2
(20 lb)
●
Print speed—
monochrome printing
Print speed—
color printing
16 pages per minute (ppm)
●
8 ppm for transparencies, heavy paper, and glossy paper
●
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.
EN
Chapter 1 Printer description 5
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, C4089A, and C4094A for the
HP Color LaserJet 4500, 4500 N, and 4500 DN printers.
The serial number contains information about the country of origin,
the revision level, the production code, and the production number of
the printer.
The rear labels also contain power rating and regulatory information.
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).
6 Identification
EN
Site requirements
Locating and placing the printer correctly are important in maintaining
the performance level that has been set at the f actory. In particular , be
sure to adhere to the environmental specifications listed in this
chapter. The following are recommendations for locating and placing
the printer:
Install in a well-ventilated, dust-free area.
z
Install on a hard, level surface (at an angle not more than 2°)
z
• For the HP Color LaserJet 4500 and 4500 N, the surface must
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.
Install where the temperature and humidity do not change
z
abruptly. Do not install near water sources, humidifiers, air
conditioners, refrigerators, or other major appliances.
Do not expose the printer to direct sunlight, dust, open flames, or
z
ammonia fumes.
Install the printer away from walls or other objects . There must be
z
enough space around the printer for proper access and
ventilation. See Figure 1-2 on page 8.
Install the printer away from the direct flow of exhaust from air
z
ventilation systems.
EN
Chapter 1 Printer description 7
Space requirements
The printer requires the top and side clearances shown below.
1
2
Figure 1-2 Space requirements
1 Top view
2 Side view
8 Site requirements
EN
Electrical specifications
Table 1-2 lists the electrical specifications required to run the printer
safely.
Table 1-2 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 1-3 for optimum performance.
Table 1-3 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)
EN
Chapter 1 Printer description 9
Consumable storage requirements
The life of consumables is greatly affected by their storage
environment. Use Table 1-4 to determine the shelf life of stored
consumables.
Table 1-4 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
Total 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
10 Site requirements
EN
Printer specifications
Table 1-5 describes the dimensions of the printer.
Table 1-5 Printer dimensions
HP Color LaserJet
4500, 4500 N
Height 394 mm 394 mm
Width 495 mm 495 mm
Depth 546 mm 545 mm
Weight 57 kg (125 lb) 75 kg (165 lb)
HP Color LaserJet
4500 DN
Table 1-6 lists the acoustic emissions of the printer when it is printing
and when it is in standby mode.
Table 1-6 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
52 dB(A)
L
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.
Duty Engine maximum is 35,000 ppm.
EN
Chapter 1 Printer description 11
, at 6.4 bel during
L
WAd
Printer assemblies
Figures 1-3 and 1-4 show the location of each major assembly in the
printer. These assemblies are described in Chapter 3.
11
10
9
8
7
6
Figure 1-3 Front view (shown with 500-sheet paper feeder and duplex
printing accessory)
1 Top output bin
2 Printer control panel
3 Power switch (standby button)
1
2
3
4
5
4 Duplex printing accessory drawer (optional on 4500 and 4500 N
models)
5 Tray 3 (500-sheet paper feeder, optional on 4500 and 4500 N
models)
6 Tray 2 (250 sheets of standard paper)
7 Middle front drawer (transfer belt access)
8 Tray 1 (150-sheet multipurpose tray)
9 Upper front drawer (imaging drum access)
10 Top cover door release button
11 Top cover door (toner cartridge access)
12 Printer assemblies
EN
8
9
1
7
6
5
4
Figure 1-4 Rear view (shown with 500-sheet paper feeder and duplex
printing accessory)
1 Rear door (fuser access)
2 Rear output bin door
3 Cover for duplex printing accessory
4 Power receptacle for duplex printing accessory
5 Power cord
2
3
EN
6 Printer power receptacle
7 EIO slots
8 Parallel connector (“C” connector)
9 Memory access
Chapter 1 Printer description 13
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 or
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.
14 Media requirements
EN
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