HP LaserJet M4345 MFP Service Manual

HP LaserJet M4345 MFP

Service Manual

HP LaserJet M4345 MFP

Service Manual

Copyright and License

© 2006 Copyright Hewlett-Packard

Development Company, L.P.

Reproduction, adaptation, or translation without prior written permission is prohibited, except as allowed under the copyright laws.

The information contained in this document is subject to change without notice.

The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein.

Part number CB425-90908

Edition 1, 10/2006

Trademark Credits

Java™ is a US trademark of Sun Microsystems, Inc.

Windows®, Windows® XP, and Windows NT® are U.S. registered trademarks of Microsoft Corporation.

Linux is a U.S. registered trademark of Linus Torvalds.

UNIX® is a registered trademark of The Open Group.

Adobe® and PostScript® are trademarks of Adobe Systems Incorporated.

PANTONE®* *Pantone, Inc.'s checkstandard trademark for color.

ENERGY STAR® and the ENERGY STAR logo® are U.S. registered marks of the United States Environmental Protection Agency.

Table of contents

1 Product information
Device comparison ................................................................................................................................	2
Features comparison .............................................................................................................................	3
Walkaround ............................................................................................................................................	6
Accessories and supplies .....................................................................................................	7
Interface ports .......................................................................................................................	8
Locking and unlocking optional accessories ........................................................................	8
Media specifications ............................................................................................................................	10
Select print media ...............................................................................................................	10
General media specifications ..............................................................................................	14
Media considerations ..........................................................................................................	14
Envelopes ...........................................................................................................	14
Envelopes with double side seams ...................................................	15
Envelopes with adhesive strips or flaps ............................................	16
Envelope margins ..............................................................................	16
Envelope storage ...............................................................................	16
Labels .................................................................................................................	16
Label construction .............................................................................	16
Transparencies ..................................................................................................	16
Card stock and heavy media .............................................................................	17
Card stock construction .....................................................................	17
Card stock guidelines ........................................................................	17
Letterhead and preprinted forms ........................................................................	17
Select the correct fuser mode ............................................................................	18
2 Installation
Site preparation ...................................................................................................................................	22
Operating environment .......................................................................................................	22
Installation checklist .............................................................................................................................	24
Optional output and input devices .......................................................................................................	26
Connect to a computer or network ......................................................................................................	27
USB configuration ...............................................................................................................	27
Network connection ............................................................................................................	28
Fax connection ....................................................................................................................	28
Analog faxing .....................................................................................................	28
Connecting the fax accessory to a phone line ..................................	28
Configuring and using the fax features .............................................	29
Digital faxing .......................................................................................................	29
Device software ...................................................................................................................................	30

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Supported operating systems .............................................................................................	30
Supported operating systems .............................................................................................	31
Select the correct printer driver ...........................................................................................	32
Universal printer drivers .....................................................................................	32
Driver Autoconfiguration .....................................................................................	32
Update Now ........................................................................................................	33
HP Driver Preconfiguration ................................................................................	33
Priority for print settings ......................................................................................................	33
Open the printer drivers ......................................................................................................	34
Software for Macintosh computers .....................................................................................	35
Remove software from Macintosh operating systems .......................................	35
Utilities .................................................................................................................................	36
HP Web Jetadmin ..............................................................................................	36
Embedded Web server ......................................................................................	36
HP Easy Printer Care software ..........................................................................	37
Supported operating systems ............................................................	37
Supported browsers ..........................................................................	37
Other components and utilities ..........................................................................	37
Network configuration ..........................................................................................................................	38
Configure TCP/IPv4 parameters .........................................................................................	38
Change the IP address ......................................................................................	38
Set the subnet mask ..........................................................................................	39
Set the default gateway ......................................................................................	39
Configure TCP/IPv6 parameters .........................................................................................	40
Disable network protocols (optional) ..................................................................................	40
Disable IPX/SPX ................................................................................................	40
Disable AppleTalk ..............................................................................................	41
Disable DLC/LLC ...............................................................................................	41
HP Jetdirect EIO print servers ............................................................................................	41
Security features ..................................................................................................................................	42
Securing the embedded Web server ..................................................................................	42
Foreign Interface Harness (FIH) .........................................................................................	42
Requirements .....................................................................................................	42
Using the FIH .....................................................................................................	42
Secure Disk Erase ..............................................................................................................	43
Data affected ......................................................................................................	44
Gaining access to Secure Disk Erase ................................................................	44
Additional Information ........................................................................................	44
Job-storage features ...........................................................................................................	44
HP DSS authentication .......................................................................................................	44
Locking the control-panel menus ........................................................................................	44
Locking the formatter cage .................................................................................................	45
3 Manage and maintain the device
Control-panel menus ...........................................................................................................................	48
Use the control panel ..........................................................................................................	48
Control-panel layout ...........................................................................................	48
Home screen ......................................................................................................	49
Buttons on the touchscreen ...............................................................................	50
Control-panel help system .................................................................................	50

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Navigate the Administration menu ......................................................................................	50
Information menu ................................................................................................................	51
Default Job Options menu ..................................................................................................	52
Default Options for Originals ..............................................................................	53
Default Copy Options .........................................................................................	54
Default Fax Options ...........................................................................................	55
Default E-mail Options .......................................................................................	56
Default Send to Folder Options ..........................................................................	57
Default Print Options ..........................................................................................	58
Time/Scheduling menu .......................................................................................................	58
Management menu .............................................................................................................	59
Initial Setup menu ...............................................................................................................	60
Networking and I/O ............................................................................................	60
Fax Setup ...........................................................................................................	68
E-mail Setup .......................................................................................................	71
Send Setup menu ..............................................................................................	71
Device Behavior menu ........................................................................................................	71
Print Quality menu ..............................................................................................................	75
Troubleshooting menu ........................................................................................................	77
Resets menu .......................................................................................................................	79
Service menu ......................................................................................................................	80
Use information pages .........................................................................................................................	82
Configure e-mail alerts ........................................................................................................................	84
HP Easy Printer Care software ...........................................................................................................	85
Open the HP Toolbox FX ....................................................................................................	85
HP Toolbox FX sections .....................................................................................................	85
Use the embedded Web server ...........................................................................................................	87
Open the embedded Web server by using a network connection ......................................	87
Embedded Web server sections .........................................................................................	87
Use HP Web Jetadmin software .........................................................................................................	90
Use the HP Printer Utility for Macintosh ..............................................................................................	91
Open the HP Printer Utility ..................................................................................................	91
HP Printer Utility features ...................................................................................................	91
Manage supplies ..................................................................................................................................	93
Supplies life expectancy .....................................................................................................	93
Change the print cartridge ..................................................................................................	93
Manage the print cartridge ..................................................................................................	93
Print-cartridge storage ........................................................................................	93
Use genuine HP print cartridges ........................................................................	93
HP policy on non-HP print cartridges .................................................................	94
Print-cartridge authentication .............................................................................	94
HP fraud hotline and Web site ...........................................................................	94
Clean the device ..................................................................................................................................	95
Clean the exterior ................................................................................................................	95
Clean the scanner glass .....................................................................................................	95
Clean the scanner lid backing .............................................................................................	96
Clean the paper path ..........................................................................................................	96
Clean the document feeder ................................................................................................	96
Clean the document feeder delivery system ......................................................	97
Clean the document feeder-rollers .....................................................................	98

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Set the real-time clock .......................................................................................................................	100
Set the date and time ........................................................................................................	100
Set the date format ...........................................................................................	100
Set the date ......................................................................................................	100
Set the time format ...........................................................................................	100
Set the time ......................................................................................................	100
Set the wake time .............................................................................................................	101
Set the sleep delay ...........................................................................................................	101
Upgrading the firmware .....................................................................................................................	102
Determining the current level of firmware .........................................................................	102
Downloading the new firmware from the HP Web site .....................................................	102
Transferring the new firmware to the MFP .......................................................................	102
Using FTP to upgrade the firmware on a network connection ........................	102
Using HP Web Jetadmin to upgrade the firmware ..........................................	104
Using MS-DOS commands to upgrade the firmware ......................................	104
Upgrading the HP Jetdirect firmware ................................................................................	105
Calibrate the scanner ........................................................................................................................	106
Calibrate the control panel .................................................................................................................	107
Disable Embedded Jetdirect I/O ........................................................................................................	108
Select the MFP language ..................................................................................................................	109
4 Theory of operation
Basic operation ..................................................................................................................................	112
Sequence of operation (printer) ........................................................................................	112
Sequence of operation (scanner) .....................................................................................	113
Formatter system ...............................................................................................................................	114
Sleep mode .......................................................................................................................	114
Resolution Enhancement technology (REt) ......................................................................	114
EconoMode .......................................................................................................................	115
Input/output .......................................................................................................................	115
CPU ...................................................................................................................................	115
Memory .............................................................................................................................	115
Hard disk ..........................................................................................................	115
Random-access memory .................................................................................	115
DIMM slot .........................................................................................................	115
Firmware ..........................................................................................................	115
Nonvolatile memory .........................................................................................	116
HP Memory Enhancement technology ............................................................	116
PJL overview .....................................................................................................................	116
PML ...................................................................................................................................	116
Control panel .....................................................................................................................	116
Scanner interface ..............................................................................................................	116
Engine-control system .......................................................................................................................	117
DC controller PCA .............................................................................................................	117
Motors and fans ................................................................................................................	119
Motor and fan functions ....................................................................................	119
Ambient-temperature detection ........................................................................	120
Engine power supply circuit ..............................................................................................	120
Fuser control .....................................................................................................................	121
Fuser over-temperature protection ..................................................................	122

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High-voltage power supply ...............................................................................................	124
Low-voltage power supply ................................................................................................	125
Overcurrent/overvoltage protection ..................................................................................	127
Toner detection .................................................................................................................	127
Cartridge detection ............................................................................................................	127
Laser/scanner system .......................................................................................................................	128
Laser/scanner control .......................................................................................................	129
Image-formation system ....................................................................................................................	131
Print cartridge ....................................................................................................................	132
Cartridge memory ............................................................................................	132
Image-formation process ..................................................................................................	133
Pickup, feed, and delivery system .....................................................................................................	135
Pickup-and-feed block ......................................................................................................	138
Printing from tray 1 ...........................................................................................	139
Printing from tray 2 ...........................................................................................	140
Media-size detection .......................................................................	141
Cassette media-size detection .......................................	141
Media-length detection ...................................................	141
Media-width detection .....................................................	141
Cassette pickup operation ...............................................................	141
Lifter-driver operation ......................................................................	143
Multifeed prevention ........................................................................	143
Distance-between-pages adjustment ..............................................	144
Media-skew prevention ....................................................................................	145
Feed-speed control ..........................................................................................	147
Fusing and reversing/delivery block .................................................................................	148
Fusing ...............................................................................................................	148
Face-down delivery ..........................................................................................	148
Face-up delivery ...............................................................................................	149
Jam detection ....................................................................................................................	151
Pickup delay jam from tray 1 ............................................................................	151
Pickup delay jam from tray 2 ............................................................................	151
Pickup stationary jam .......................................................................................	151
Fuser-delivery delay jam ..................................................................................	152
Fuser wrapping jam ..........................................................................................	152
Fuser-delivery stationary jam when feeding regular-size media .....................	152
Fuser-delivery stationary jam when feeding custom-size media .....................	152
Reversing delay jam (face-down delivery only) ...............................................	152
Reversing stationary jam (face-down delivery only) ........................................	152
Delivery delay jam during face-down delivery .................................................	153
Delivery delay jam during face-up delivery ......................................................	153
Delivery stationary jam during face-down delivery ..........................................	153
Delivery stationary jam during face-up delivery ...............................................	153
Door-open jam .................................................................................................	153
Residual-media jam .........................................................................................	153
Printing from the 500-sheet feeder ...................................................................................	154
500-sheet feeder pickup and feeding ..............................................................	155
Duplex-printing unit ...........................................................................................................	157
Reversing/duplexing pickup .............................................................................	157
Duplex-printing jam detection ..........................................................................	158

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Duplex-unit-pickup delay jam ..........................................................	158
Duplex-unit stationary jam ...............................................................	159
Duplex-unit delay jam ......................................................................	159
3-bin mailbox system .........................................................................................................................	160
Stacker mode ....................................................................................................................	162
Mailbox mode ....................................................................................................................	162
Function-separator mode ..................................................................................................	162
Jam detection ....................................................................................................................	162
Feed-delay jam ................................................................................................	163
Feed-stationary jam .........................................................................................	163
Residual-media jam .........................................................................................	163
Power-on sequence ..........................................................................................................	163
MBM driver ........................................................................................................................	164
MBM switches and sensors ..............................................................................................	167
MBM PCBs .......................................................................................................................	168
MBM list of signals ............................................................................................................	169
Stapler/stacker system ......................................................................................................................	171
Power-on sequence ..........................................................................................................	171
Staple mode ......................................................................................................................	172
Jogger operation ...............................................................................................................	178
Jogger home-position detection .......................................................................................	182
Stacker mode ....................................................................................................................	184
Jam detection ....................................................................................................................	184
Stapler unit ........................................................................................................................	185
Staple home position detection ........................................................................	186
Self-priming detection ......................................................................................	186
Staple level detection .......................................................................................	186
Stapler/stacker switches and sensors ..............................................................................	187
Stapler/stacker motors, solenoid, and fan ........................................................................	189
Stapler/stacker PCBs ........................................................................................................	190
Stapler/stacker driver PCB ...............................................................................................	193
Stapler/stacker driver list of signals ..................................................................................	195
Scanner system .................................................................................................................................	198
Electrical system ...............................................................................................................	198
Motors and fans ................................................................................................................	200
Optical assembly ...............................................................................................................	200
ADF feed system ..............................................................................................................	202
Jam detection ....................................................................................................................	202
Residual-media jam .........................................................................................	202
ADF pickup jam ................................................................................................	203
ADF jam ...........................................................................................................	203
Registration sensor jam ...................................................................	203
Read sensor jam .............................................................................	203
Exit sensor jam ................................................................................	203
ADF cover open jam ........................................................................................	203
ADF open jam ..................................................................................................	203
Locations of major components ........................................................................................................	204
Sensors and switches .......................................................................................................	204
Cassette sensors .............................................................................................	204
Sensors in the print-cartridge area ...................................................................	205

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Sensors on the reversing unit (top side) ..........................................................	205
Sensors in the interior of the MFP ...................................................................	206
Output-bin detection switch, SW103 ................................................................	207
Tray 1 paper-present sensor, PS105 ...............................................................	207
Top-cover switch, SW101 ................................................................................	208
Tray 2 jam-access-cover switch, SW105 .........................................................	208
Motors, fans, solenoids, and clutch ..................................................................................	208
Front-side fans .................................................................................................	209
Rear-side fans ..................................................................................................	210
Rear-side motors (1 of 2) .................................................................................	210
Rear-side motors (2 of 2) .................................................................................	211
Rear-side solenoid ...........................................................................................	212
Reversing-unit motors and solenoids ..............................................................	213
Right, rear corner components (1 of 2) ............................................................	214
Right, rear corner components (2 of 2) ............................................................	215
Scanner and ADF components .........................................................................................	215
ADF output-bin-full sensor ...............................................................................	215
ADF pickup assembly sensors .........................................................................	216
ADF motors, solenoid, and sensors .................................................................	216
5 Removal and replacement
Service approach ...............................................................................................................................	220
Removal and replacement strategy ...................................................................................................	221
Required tools ...................................................................................................................	221
Before performing service .................................................................................................	221
After completing service ...................................................................................................	222
Screws that are used in the MFP .....................................................................................	222
User-replaceable parts ......................................................................................................................	224
Print cartridge ....................................................................................................................	224
Control-panel overlays ......................................................................................................	224
Control panel .....................................................................................................................	225
Transfer roller ....................................................................................................................	226
ADF input tray ...................................................................................................................	227
ADF pickup and feed rollers .............................................................................................	228
ADF separation pad ..........................................................................................................	229
ADF delivery guide (clear mylar sheet) ............................................................................	231
Output-bin assembly .........................................................................................................	233
Duplex-printing unit ...........................................................................................................	234
Fuser-entrance guide ........................................................................................................	235
Fuser .................................................................................................................................	235
Tray 2, 3, 4, or 5 pickup and feed rollers ..........................................................................	236
Tray 1 pickup roller ...........................................................................................................	237
Scanner filter cover and scanner filter ..............................................................................	238
ADF-hinge flap ..................................................................................................................	239
Formatter cover and formatter ..........................................................................................	240
Hard drive .........................................................................................................................	242
DIMM .................................................................................................................................	243
Fax accessory ...................................................................................................................	244
Covers, doors, and external panels ...................................................................................................	246
Top-cover flatbed flange ...................................................................................................	246

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Front cover ........................................................................................................................	247
Back cover ........................................................................................................................	251
Internal assemblies ............................................................................................................................	253
Reversing-separation-guide assembly .............................................................................	253
Reversing assembly ..........................................................................................................	254
Main fan (FN101) and reversing-unit fan (FN103) ...........................................................	258
Thermistor (TH3) ...............................................................................................................	263
Tray 2 jam-access-cover switch (SW105) ........................................................................	265
Tray 1 assembly ................................................................................................................	267
Front-cover support ...........................................................................................................	269
Tray 1 feed-assembly .......................................................................................................	271
Feed-roller assembly ........................................................................................................	278
DC controller .....................................................................................................................	280
Main motor (M101) ............................................................................................................	283
DC controller fan (FN104) .................................................................................................	284
Print-cartridge fan (FN102) ...............................................................................................	285
Print-cartridge motor (M102) .............................................................................................	287
Top-cover switch (SW101) ...............................................................................................	290
Registration assembly ......................................................................................................	292
Paper-pickup-drive assembly ...........................................................................................	295
Lifter-drive assembly .........................................................................................................	298
Power-factor-correction (PFC) power supply ...................................................................	301
Engine power supply ........................................................................................................	306
Paper-feed assembly ........................................................................................................	311
Tray 2 detection switch .....................................................................................................	312
Paper-size-detection switch (SW102) ..............................................................................	313
Tray 2 paper-present sensor (PS101) ..............................................................................	314
Laser/scanner ...................................................................................................................	315
Output-bin-full sensor .......................................................................................................	316
ADF and scanner components ..........................................................................................................	319
ADF assembly ...................................................................................................................	319
Scanner assembly ............................................................................................................	321
Scanner-controller PCA ....................................................................................................	326
ADF components ...............................................................................................................................	327
ADF output-bin extension .................................................................................................	327
ADF white mylar-backing ..................................................................................................	328
ADF front cover .................................................................................................................	330
ADF rear cover ..................................................................................................................	331
ADF left-side cover ...........................................................................................................	332
ADF jam-access cover and latch ......................................................................................	334
ADF leading-edge and paper-present sensors ................................................................	335
ADF hinges .......................................................................................................................	337
500-sheet feeder components ...........................................................................................................	339
500-sheet-feeder pickup and feed rollers .........................................................................	339
Stapler/stacker components ..............................................................................................................	340
Delivery tray ......................................................................................................................	340
Front cover ........................................................................................................................	340
Rear cover ........................................................................................................................	340
Left cover ..........................................................................................................................	341
Top cover ..........................................................................................................................	341

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Bottom cover .....................................................................................................................	342
Stapler unit ........................................................................................................................	343
Jogger unit ........................................................................................................................	344
Stapler/stacker driver PCB ...............................................................................................	348
3-bin mailbox components .................................................................................................................	350
Rear cover ........................................................................................................................	350
Front cover ........................................................................................................................	350
Delivery tray ......................................................................................................................	350
Left cover ..........................................................................................................................	351
Upper cover ......................................................................................................................	351
Right-door unit ..................................................................................................................	352
Bottom cover .....................................................................................................................	354
MBM driver PCB ...............................................................................................................	355
6 Problem solving
Problem-solving checklist ..................................................................................................................	359
Factors that affect performance ........................................................................................	359
Problem-solving flowchart .................................................................................................................	360
Power-on checks ...............................................................................................................................	364
Power-on troubleshooting overview .................................................................................	364
Formatter lights ..................................................................................................................................	366
HP Jetdirect Inside LEDs ..................................................................................................	366
Heartbeat LED ..................................................................................................................	366
Fax LED ............................................................................................................................	367
Diagrams for troubleshooting ............................................................................................................	368
DC controller connections .................................................................................................	368
Scanner-controller PCA connections ................................................................................	370
General timing chart .........................................................................................................	371
General circuit diagrams ...................................................................................................	373
Solve general device problems .........................................................................................................	379
Control-panel message types ............................................................................................................	382
Control-panel messages ....................................................................................................................	383
Common causes of jams ...................................................................................................................	399
Clear jams ..........................................................................................................................................	400
Clear jams from the top-cover and print-cartridge areas ..................................................	401
Clear jams from the optional envelope-feeder area .........................................................	403
Clear jams from the tray 1 area ........................................................................................	405
Clear jams from the tray 2, 3, 4, or 5 areas ......................................................................	406
Clear jams from the optional duplexer ..............................................................................	408
Clear jams from the output areas .....................................................................................	409
Clear jams from the fuser .................................................................................................	410
Clear jams from the document feeder ..............................................................................	413
Solve repeated jams .........................................................................................................	414
Paper-path test .................................................................................................................	415
Clear staple jams ...............................................................................................................................	416
Solve print-quality problems ..............................................................................................................	418
Print-quality problems associated with media ..................................................................	418
Print-quality problems associated with the environment ..................................................	418
Print-quality problems associated with jams .....................................................................	418
Overhead transparency defects ........................................................................................	418

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Image defect examples .....................................................................................................	419
Light print (partial page) ...................................................................................	419
Light print (entire page) ....................................................................................	419
Specs ...............................................................................................................	420
Dropouts ...........................................................................................................	420
Lines .................................................................................................................	421
Gray background ..............................................................................................	421
Toner smear .....................................................................................................	422
Loose toner ......................................................................................................	423
Repeating defects ............................................................................................	423
Repeating image ..............................................................................................	424
Misformed characters .......................................................................................	424
Page skew ........................................................................................................	425
Curl or wave .....................................................................................................	425
Wrinkles or creases ..........................................................................................	426
Vertical white lines ...........................................................................................	427
Tire tracks .........................................................................................................	427
White spots on black ........................................................................................	428
Scattered lines .................................................................................................	428
Blurred print ......................................................................................................	429
Random image repetition .................................................................................	429
Repetitive defect ruler ......................................................................................	431
Solve network printing problems .......................................................................................................	433
Solve copy problems .........................................................................................................................	434
Prevent copy problems .....................................................................................................	434
Image problems ................................................................................................................	434
Media-handling problems .................................................................................................	435
Performance problems .....................................................................................................	437
Solve fax problems ............................................................................................................................	438
Solve sending problems ...................................................................................................	438
Solve receiving problems ..................................................................................................	439
Solve e-mail problems .......................................................................................................................	441
Validate the SMTP gateway address ...............................................................................	441
Validate the LDAP gateway address ................................................................................	441
Solve network connectivity problems ................................................................................................	442
Troubleshooting network printing problems ......................................................................	442
Loopback test ....................................................................................................................	442
Ping test ............................................................................................................................	443
Solve stapler/stacker problems .........................................................................................................	444
Solve 3-bin mailbox problems ...........................................................................................................	451
Functional checks ..............................................................................................................................	454
Early boot diagnostic test ..................................................................................................	454
Engine test ........................................................................................................................	454
Formatter test ....................................................................................................................	455
Half self-test ......................................................................................................................	455
Drum-rotation test .............................................................................................................	456
MFP resets ........................................................................................................................................	457
Cold reset ..........................................................................................................................	457
NVRAM initialization .........................................................................................................	457
Hard-disk initialization .......................................................................................................	458

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Individual component diagnostics .....................................................................................................	459
Paper-path-sensor test .....................................................................................................	459
Manual sensor test ............................................................................................................	459
Scanner tests ....................................................................................................................	460
Component test .................................................................................................................	461
Service ID ..........................................................................................................................................	462
Restoring the Service ID ...................................................................................................	462
Converting the service ID to an actual date ......................................................................	462
Troubleshooting the embedded HP Jetdirect print server .................................................................	463
Firmware-stack trace .........................................................................................................................	464
Solve common Windows problems ..................................................................................................	465
Solve common Macintosh problems .................................................................................................	466
Solve Linux problems ........................................................................................................................	469
Solve PostScript problems ................................................................................................................	470
General problems .............................................................................................................	470
7 Parts and diagrams
Order parts, accessories, and supplies .............................................................................................	472
Order directly from HP ......................................................................................................	472
Order through service or support providers ......................................................................	472
Order directly through the embedded Web server ...........................................................	472
How to use the parts lists and diagrams ...........................................................................................	472
Screws that are used in the MFP ......................................................................................................	473
Customer-replaceable parts and accessories ...................................................................................	474
Accessories .......................................................................................................................	474
Customer-replaceable components (print engine) ...........................................................	476
Customer-replaceable components (ADF and scanner) ..................................................	478
Cables and interfaces .......................................................................................................	480
Control panel and control-panel overlays .........................................................................	483
Memory .............................................................................................................................	485
Print cartridge and maintenance kits ................................................................................	487
Documentation, software, and training material ................................................................................	490
Assembly locations ............................................................................................................................	492
External components .........................................................................................................................	496
Print-engine internal components ......................................................................................................	498
Upper-plate assembly .......................................................................................................	498
Internal components (1 of 5) .............................................................................................	500
Internal components (2 of 5) .............................................................................................	502
Internal components (3 of 5) .............................................................................................	504
Internal components (4 of 5) .............................................................................................	506
Internal components (5 of 5) .............................................................................................	508
Electrical/forward assembly ..............................................................................................	510
Main drive assembly .........................................................................................................	512
Paper-pickup-drive assembly ...........................................................................................	514
Lifter-drive assembly .........................................................................................................	516
Cassette ............................................................................................................................	518
Paper-feed roller assembly ...............................................................................................	520
Registration assembly ......................................................................................................	522
Multipurpose assembly .....................................................................................................	524
Reverse assembly ............................................................................................................	526

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Reverse-separation-guide assembly ................................................................................	528
Delivery assembly .............................................................................................................	530
Fuser .................................................................................................................................	532
ADF components ...............................................................................................................................	534
ADF assembly ...................................................................................................................	534
ADF internal components (1 of 3) .....................................................................................	536
ADF internal components (2 of 3) .....................................................................................	538
ADF internal components (3 of 3) .....................................................................................	540
ADF input tray ...................................................................................................................	542
ADF separation pad ..........................................................................................................	544
ADF separation-pad case .................................................................................................	546
ADF pickup-roller assembly ..............................................................................................	548
ADF pickup-roller cover ....................................................................................................	550
ADF mylar-holder assembly .............................................................................................	552
ADF mylar replacement kit ...............................................................................................	554
Scanner components .........................................................................................................................	556
Scanner-base components ...............................................................................................	556
Scanner flatbed-unit assembly .........................................................................................	558
Scanner covers .................................................................................................................	560
Cassette .............................................................................................................................................	562
Optional devices ................................................................................................................................	564
Duplex-printing accessory ................................................................................................	564
Stapler/stacker ..................................................................................................................	566
3-bin mailbox .....................................................................................................................	568
Alphabetical parts list .........................................................................................................................	570
Numerical parts list ............................................................................................................................	586
Appendix A Specifications
Physical specifications .......................................................................................................................	604
Electrical specifications .....................................................................................................................	604
Acoustic specifications ......................................................................................................................	605
Operating environment ......................................................................................................................	606
Appendix B Product warranty statements
Hewlett-Packard limited warranty statement .....................................................................................	607
Customer Self Repair Warranty Service ...........................................................................................	608
HP Customer Care ............................................................................................................................	609
Online Services .................................................................................................................	609
Telephone support ............................................................................................................	609
Software utilities, drivers, and electronic information .......................................................	609
Fax accessory support ......................................................................................................	609
HP direct ordering for accessories or supplies .................................................................	609
HP service information ......................................................................................................	609
HP service agreements ....................................................................................................	609
HP Toolbox FX ..................................................................................................................	610
HP support and information for Macintosh computers .....................................................	610
HP maintenance agreements ............................................................................................................	611
On-site service agreements ..............................................................................................	611
Next-day on-site service ...................................................................................	611
Weekly (volume) on-site service ......................................................................	611

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Repacking the device .......................................................................................................	611
Extended warranty ............................................................................................................	612
Appendix C Regulatory information
FCC regulations .................................................................................................................................	614
Environmental product stewardship program ....................................................................................	615
Protecting the environment ...............................................................................................	615
Ozone production ..............................................................................................................	615
Power consumption ..........................................................................................................	615
Toner consumption ...........................................................................................................	615
Paper use ..........................................................................................................................	615
Plastics ..............................................................................................................................	615
HP LaserJet print supplies ................................................................................................	616
HP print supplies returns and recycling program information ..........................................	616
Paper .................................................................................................................................	616
Material restrictions ...........................................................................................................	617
Disposal of waste equipment by users in private households in the European Union ....	617
Material Safety Data Sheet (MSDS) .................................................................................	618
For more information ........................................................................................................	618
Telecom statement ............................................................................................................................	619
Declaration of conformity ...................................................................................................................	620
Safety statements ..............................................................................................................................	621
Laser safety ......................................................................................................................	621
Canadian DOC regulations ...............................................................................................	621
VCCI statement (Japan) ...................................................................................................	621
Power cord statement (Japan) ..........................................................................................	621
EMI statement (Korea) ......................................................................................................	621
Laser statement for Finland ..............................................................................................	621
Index ..................................................................................................................................................................	623

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1 Product information

The HP LaserJet M4345 is designed to be shared by a workgroup. Use the MFP to copy and print black-and-white documents or to digitally send black-and-white documents. The MFP is a standalone copier that does not require connection to a computer. With the optional HP LaserJet Analog Fax Accessory 300 User Guide (included with some models), the MFP can also send and receive faxes.

If you have not done so, see the HP LaserJet M4345 Getting Started Guide for setup instructions.

This chapter introduces the following topics:

●Device comparison

●Features comparison

●Walkaround

●Media specifications

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1

Device comparison

HP LaserJet M4345 MFP (base model)

The HP LaserJet M4345 is the base model, and comes standard with the following items:

●A 100-sheet multipurpose input tray (tray 1)

●Three 500-sheet input trays

●Automatic document feeder (ADF) that holds up to 50 pages

●HP Jetdirect embedded print server for connecting to a 10/100Base-T network

●256 megabytes (MB) synchronous dynamic random access memory (SDRAM)

HP LaserJet M4345xs MFP

HP LaserJet M4345x MFP

The HP LaserJet M4345x includes all of the features of the base model plus the following items:

●Automatic duplex printing accessory (duplexer)

●Additional 500-sheet feeder (tray 3)

●33.6 kbps analog-fax accessory

HP LaserJet M4345xm MFP

The HP LaserJet M4345xs includes all of the features of the	The HP LaserJet M4345xm includes all of the features of the
base model plus the following items:	base model plus the following items:

●Automatic duplex printing accessory (duplexer)

●Additional 500-sheet feeder (tray 3)

●33.6 kbps analog-fax accessory

●Stapler/stacker accessory

●Cabinet/stand

●Automatic duplex printing accessory (duplexer)

●Additional 500-sheet feeder (tray 3)

●33.6 kbps analog-fax accessory

●3-bin mailbox accessory

●Cabinet/stand

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Features comparison

Feature	HP LaserJet M4345
Functions	●	Two-sided copying (duplexing)
	●	Image modification
	●	Color digital sending
	●	Document finishing
Speed and throughput	●	45 pages per minute (ppm) when scanning and printing
		on letter-size paper; 43(ppm) when copying and
		printing on A4-size paper
	● 25% to 400% scalability when using the scanner glass
	● 25% to 200% scalability when using the automatic
		document feeder (ADF)
	● Less than 10 seconds to print the first page
	● Transmit Once, Raster Image Processing (RIP) ONCE
		technology
	● Duty cycle of up to 200,000 pages per month
Resolution	●	1200 dots per inch (dpi) with Resolution Enhancement
		technology (REt)
	● FastRes1200 provides 1200 dpi quality at full speed
	● Up to 220 levels of gray
Memory	●	256 megabytes (MB) of random-access memory
		(RAM), expandable to 512 MB by using an industry
		standard 100-pin double data rate memory module
		(DDR SDRAM DIMM)
	● Memory Enhancement technology (MEt) that
		automatically compresses data to use RAM more
		efficiently
User interface	●	Graphical touchscreen control panel
	● An embedded Web server to gain access to support
		and order supplies (for network-connected products)
	● HP Easy Printer Care software (a Web-based status
		and troubleshooting tool).
Language and fonts	●	HP PCL 6
	●	HP PCL5
	●	Printer Management Language
	●	PDF
	●	XHTML
	● 80 scalable TrueType typefaces
	● HP PostScript 3 emulation

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Copying and sending	●			Modes for text, graphics, and mixed text and graphics
				formats
	● A job-interrupt feature (at copy boundaries)
	● Xenon lamp for instant-on copying
	● Multiple pages per sheet
	● Operator attendance animations (for example, jam
				recovery)
	●			E-mail compatibility
	● A sleep feature that saves energy
	● Automatic duplex (two-sided) scanning
					NOTE An automatic duplex printing accessory is
					required for two-sided copying.
					NOTE To use e-mail functionality, the device must
					be connected to an IP-based server that has simple
					mail transfer protocol (SMTP). This server can be
					on the local area network or at an outside Internet
					service provider (ISP). HP recommends that the
					device be located on the same local area network
					(LAN) as the SMTP server. If you are using an ISP,
					you must connect to the ISP by using a digital
					subscriber line (DSL) connection. If you obtain e-
					mail services from an ISP, ask the ISP to provide
					the correct SMTP address.
					Dial-up connections are not supported. If you do not
					have an SMTP server on your network, you can
					purchase third-party software that allows you to
					create an SMTP server.
Print cartridge	●			Prints up to 18,000 pages at 5% coverage.
	● No-shake cartridge design
	● Authentic HP print cartridge detection
Paper Input	●			Tray 1 (multipurpose tray): A multipurpose tray for
				paper, transparencies, labels, and envelopes. Holds up
				to 100 sheets of paper or 10 envelopes.

● Tray 2 and optional trays 3, 4, and 5: 500-sheet trays. These trays automatically detect standard paper sizes up to Legal and accommodate printing on customsize paper.

● Automatic document feeder (ADF): Holds up to 50 sheets of paper.

● Duplex printing and copying: With the optional duplexing accessory, provides two-sided printing and copying (printing on both sides of the paper).

● ADF duplex scanning: The ADF has an automatic duplex feature for scanning two-sided documents.

● Optional envelope feeder: Holds up to 75 envelopes.

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Paper output	●	Standard output bin: The standard output bin is
		located on the left side of the device. This bin can hold
		up to 500 sheets of paper.
	● ADF output bin: The ADF output bin is underneath the
		ADF input tray. The bin holds up to 50 sheets, and the
		device automatically stops when this bin is full.
	● Optional stapler/stacker: The stapler/stacker staples
		up to 30 sheets and stacks up to 500 sheets.
	● Optional 3-bin mailbox: One bin stacks up to 500
		sheets, and two bins stack up to 100 sheets each for a
		total capacity of 700 sheets.
Connectivity	●	A Foreign interface harness (FIH) connection (AUX) for
		connecting other devices
	● Local area network (LAN) connector (RJ-45) for the
		embedded HP Jetdirect print server
	● Optional analog-fax card
	● Optional HP Digital Sending Software (DSS)
	● High-speed USB 2.0
	● Jetlink for paper handling solutions
	● Optional HP Jetdirect enhanced input/output (EIO) print
		server cards:
		●	LocalTalk
		●	Fast Ethernet 10/100TX
		●	Ethernet 802.11b wireless
		● Bluetooth wireless printer adapter
		●	Infrared adapter
Environmental features	●	The Sleep setting saves energy (meets ENERGY
		STAR guidelines).
Security features	●	Foreign interface harness (FIH)
	●	Secure Disk Erase
	●	Security lock
	●	Job retention
	●	DSS authentication

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Walkaround

1 Document-feeder assembly

2 Document-feeder top cover

3 Document-feeder input tray

4 Top cover (provides access to the print cartridge)

5 Top-cover lever

6 Tray 1 (multipurpose tray)

7 Jam-access lever

8 Tray-number indicator

9 Paper-level indicator

10 Control-panel keypad

11 Control-panel display

12 Control-panel status lights

13 Scanner lock

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14 Output bin

15 Optional duplexer

16 On/off switch

17 Power connection

18 Interface ports

19 Formatter cover (provides access to the memory DIMM slot, hard disk, and analog-fax accessory)

Accessories and supplies

1 500-sheet feeder (Q5968A)

2 Duplexer (Q5969A)

3 Envelope feeder (Q2438B)

4 Stapler/stacker (Q5691A)

5 Memory DIMM

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6 HP Jetdirect print server (EIO card)

7 Hard-disk accessory (EIO card)

8 Storage cabinet/stand (Q5970A)

9 3-bin mailbox (Q5692A)

10 Staple cartridge (C8091A)

11 Print cartridge (Q5945A)

12 HP LaserJet Analog Fax Accessory 300 (Q3701A)

NOTE The device accommodates up to three optional 500-sheet feeders. HP recommends using a cabinet when using the optional 500-sheet feeders.

Interface ports

1 EIO slot

2 Network connection (embedded HP Jetdirect print server)

3 Foreign interface harness (FIH) port

4 High-speed USB 2.0 device port

5 Telephone-line connection (for the optional analog-fax accessory)

Locking and unlocking optional accessories

For more stability to prevent the device from tipping over, the optional 500-sheet feeders and the cabinet are automatically locked to the bottom of the device. When accessories are installed, verify that the lock on each accessory is in the rear (locked) position.

To unlock the accessories, slide the lever to the forward (unlocked) position.

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Media specifications

Select print media

Table 1-1 Supported types of media

Type of media	Tray 1	Trays 2, 3, Optional duplexer		Optional	3-bin mailbox or	Stapler part of
		4, and 5		envelope feeder	stacker part of	stapler/stacker
					stapler/stacker
Plain	X	X	X	X	X	X
Preprinted	X	X	X	X	X	X
Letterhead	X	X	X	X	X	X
Transparency	X	X			X
Prepunched	X	X		X	X	X
Labels	X	X	X	X	X
Bond	X	X	X	X	X	X
Recycled	X	X	X	X	X	X
Color	X	X	X	X	X	X
Cardstock	X			X	X12
Rough	X	X	X	X	X	X
Envelope	X			X	X1

1Face-up delivery only.

2If a 3-bin mailbox is installed, select the bottom bin when printing on cardstock. Media weights that are 200g/m2 or greater are supported only in the bottom bin.

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Table 1-2 Tray 1 supported sizes and weights

Size	Dimensions1	Weight	Capacity2
Letter	216 x 279 mm (8.5 x 11 inches)	60 to 200g/m2 (16 to 53 lb)	100 sheets of 75g/m2 (20 lb)
			paper
A4	210 x 297 mm (8.3 x 11.7 inches)
Legal	216 x 356 mm (8.5 x 14 inches)
Executive	184 x 267 mm (7.3 x 10.5 inches)
Statement	140 x 216 mm (5.5 x 8.5 inches)
8.5 x 13	216 x 330 mm (8.5 x 13 inches)
A5	148 x 210 mm (5.8 x 8.3 inches)
B5 (JIS)	182 x 257 mm (7.2 x 10.1 inches)
Executive (JIS)	216 x 330 mm (8.5 x 13 inches)
D Postcard (JIS)	148 x 200 mm (5.8 x 7.9 inches)
16K	197 x 273 mm (7.75 x 10.75 inches)
Custom	Minimum: 76 x 127 mm (3 x 5
	inches)
	Maximum: 216 x 356 mm (8.5 x 14
	inches)
Envelope Commercial #10	105 x 241 mm (4.1 x 9.5 inches)	75 to 105g/m2 (20 to 28 lb)	10 envelopes
Envelope DL ISO	110 x 220 mm (4.3 x 8.7 inches)
Envelope C5 ISO	162 x 229 mm (6.4 x 9.0 inches)
Envelope B5 ISO	176 x 250 mm (6.9 x 9.8 inches)
Envelope Monarch #7-3/4	98 x 191 mm (3.9 x 7.5 inches)

1The MFP supports a wide range of sizes. Check the MFP software for supported sizes.

2Capacity can vary depending on paper weight and thickness, as well as environmental conditions.

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Table 1-3 Trays 2, 3, 4, and 5 supported sizes and weights

Size	Dimensions1	Weight	Capacity2
Letter	216 x 279 mm (8.5 x 11 inches)	60 to 120g/m2 (16 to 32 lb)	500 sheets of 75g/m2 (20 lb)
			paper
A4	210 x 297 mm (8.3 x 11.7 inches)
Executive	184 x 267 mm (7.3 x 10.5 inches)
Legal	216 x 356 mm (8.5 x 14 inches)
B5 (JIS)	182 x 257 mm (7.2 x 10.1 inches)
A5	148 x 210 mm (5.8 x 8.3 inches)
8.5 x 13	216 x 330 mm (8.5 x 13 inches)
Executive (JIS)	216 x 330 mm (8.5 x 13 inches)
16K	197 x 273 mm (7.75 x 10.75 inches)
Custom	Minimum: 148 x 210 mm (5.8 x 8.3
	inches)
	Maximum: 216 x 356 mm (8.5 x 14
	inches)

1The MFP supports a wide range of sizes. Check the MFP software for supported sizes.

2Capacity can vary depending on paper weight and thickness, as well as environmental conditions.

Table 1-4 Optional duplexer supported sizes and weights

Size	Dimensions	Weight
Letter	216 x 279 mm (8.5 x 11 inches)	60 to 120g/m2 (16 to 32 lb)
A4	210 x 297 mm (8.3 x 11.7 inches)
Executive	184 x 267 mm (7.3 x 10.5 inches)
Legal	216 x 356 mm (8.5 x 14 inches)
B5 (JIS)	182 x 257 mm (7.2 x 10.1 inches)
A5	148 x 210 mm (5.8 x 8.3 inches)
8.5 x 13	216 x 330 mm (8.5 x 13 inches)
Executive (JIS)	216 x 330 mm (8.5 x 13 inches)
16K	197 x 273 mm (7.75 x 10.75 inches)

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