HP LaserJet Enterprise MFP M525 Service Manual
LASERJET ENTERPRISE 500 MFP
LASERJET ENTERPRISE FLOW MFP M525
Troubleshooting Manual
2
M525
2
M525c
HP LaserJet Enterprise 500 MFP M525
and HP LaserJet Enterprise flow MFP
M525
Troubleshooting Manual
Copyright and License
© 2012 Copyright Hewlett-Packard
Development Company, L.P.
Trademark Credits
®
, Acrobat®, and PostScript® are
Adobe
trademarks of Adobe Systems Incorporated.
Reproduction, adaptation, or translation
without prior written permission is
prohibited, except as allowed under the
copyright laws.
The information contained herein 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.
Edition 2, 11/2012
Part number: CF116-90901
Microsoft®, Windows®, Windows® XP,
and Windows Vista® are U.S. registered
trademarks of Microsoft Corporation.
ENERGY STAR and the ENERGY STAR mark
are registered U.S. marks.
Conventions used in this guide
TIP: Tips provide helpful hints or shortcuts.
NOTE: Notes provide important information to explain a concept or to complete a task.
CAUTION: Cautions indicate procedures that you should follow to avoid losing data or damaging
the product.
WARNING! Warnings alert you to specific procedures that you should follow to avoid personal
injury, catastrophic loss of data, or extensive damage to the product.
ENWW iii
iv Conventions used in this guide ENWW
Table of contents
1 Theory of operation .......................................................................................................... 1
Basic operation ........................................................................................................................ 2
Major systems ........................................................................................................... 2
Product block diagram ............................................................................................... 2
Sequence of operation ............................................................................................... 3
Normal sequence of operation ..................................................................... 3
Formatter-control system ............................................................................................................ 4
Auto on/Auto off mode .............................................................................................. 4
Input/output ............................................................................................................. 6
CPU ........................................................................................................................ 6
Memory ................................................................................................................... 6
Firmware ................................................................................................... 6
Nonvolatile memory ................................................................................... 6
PJL overview ............................................................................................................. 6
PML ......................................................................................................................... 7
Control panel ........................................................................................................... 7
Engine-control system ................................................................................................................ 8
Motors, fans, clutches, solenoids, switches, and sensors ................................................. 9
DC controller operations .......................................................................................... 16
Fuser-control circuit .................................................................................................. 18
Fuser failure detection ............................................................................... 19
Fuser temperature control .......................................................................... 20
Fuser protective function ............................................................................ 21
Low-voltage power supply ........................................................................................ 22
Overcurrent/overvoltage protection ............................................................ 23
High-voltage power supply ....................................................................................... 24
Formatter ............................................................................................................... 25
Formatter heartbeat LED ............................................................................ 25
Laser/scanner system .............................................................................................. 26
Laser failure detection ............................................................................... 27
Image-formation system ........................................................................................................... 28
Electrophotographic process ..................................................................................... 28
ENWW v
Image formation process .......................................................................................... 29
Latent-image formation stage ..................................................................... 30
Primary charging ...................................................................... 30
Laser beam exposure ................................................................. 30
Developing stage ..................................................................................... 31
Toner cartridge ......................................................................... 31
Transfer stage .......................................................................................... 32
Fusing stage ............................................................................. 32
Cleaning stage ......................................................................... 33
Toner detection ....................................................................................................... 34
Pickup, feed, and delivery system ............................................................................................. 35
Paper trays ............................................................................................................. 35
Photo sensors and switches ...................................................................................... 36
Solenoids and clutches ............................................................................................ 38
Tray 1 or Tray 2 .................................................................................................................... 40
Pickup and feed unit ................................................................................................ 40
Cassette paper size detection/cassette paper detection ................................ 40
Cassette pickup ........................................................................................ 40
Tray 1 paper pickup ................................................................................................ 40
Paper pickup and feed ............................................................................................ 41
Jam detection ......................................................................................................... 42
Additional tray ...................................................................................................................... 43
Tray driver PCA ...................................................................................................... 43
Paper pickup and feed ............................................................................................ 44
Paper level and size detection .................................................................................. 45
Jam detection ......................................................................................................... 45
Scanning/image capture system .............................................................................................. 46
Control panel ......................................................................................................... 46
Scanner ................................................................................................................. 46
Document feed system ............................................................................................. 46
Document feeder operation (standard model) .............................................. 47
Sensors in the document feeder (standard model) .......................... 47
Document feeder paper path (standard model) ............................. 48
Document feeder simplex operation (standard model) .................... 49
Document feeder duplex operation (standard model) ..................... 50
Document feeder operation (M525c model) ................................................ 53
Sensors in the document feeder (M525c model) ............................ 53
Document feeder paper path (M525c model) ............................... 55
Document feeder simplex operation (M525c model) ...................... 56
Document feeder e-duplex operation (M525c model) ..................... 57
Frontside and backside background selector (M525c model) .......... 57
vi ENWW
Document feeder operation (standard model and the M525c model) .............. 58
Deskew operation ..................................................................... 58
Document feeder hinges ............................................................. 59
Stapler .................................................................................................................................. 61
2 Solve problems ............................................................................................................... 63
Solve problems checklist ......................................................................................................... 64
Menu map ............................................................................................................................ 66
Preboot menu options ............................................................................................................. 67
Current settings pages ............................................................................................................ 74
Troubleshooting process .......................................................................................................... 75
Determine the problem source ................................................................................... 75
Troubleshooting flowchart ......................................................................... 75
Power subsystem ..................................................................................................... 76
Power-on checks ...................................................................................... 76
Power-on troubleshooting overview .............................................. 76
Control-panel checks ............................................................................................... 77
Scanning subsystem ................................................................................................ 79
Tools for troubleshooting ......................................................................................................... 80
Individual component diagnostics .............................................................................. 80
LED diagnostics ........................................................................................ 80
Understand lights on the formatter ............................................... 80
Engine diagnostics ................................................................................... 83
Engine-test button ...................................................................... 83
Paper path test ......................................................................................... 85
Paper path sensors test ............................................................................. 85
Manual sensor test ................................................................................... 87
SW501 Cartridge door switch test .............................................. 89
PS8001 Rear door sensor test ..................................................... 90
PS215 Top (Top-of-Page) sensor test ............................................ 91
PS225 Paper width 1 sensor test ................................................. 92
PS2 Fuser output sensor test ........................................................ 93
PS502 Duplexer refeed sensor test .............................................. 94
PS1 Rear bin sensor test ............................................................. 95
PS4 Output bin full sensor test ..................................................... 96
PS8008 Tray 3 Feed sensor ....................................................... 97
PS8008 Tray 4 Feed sensor ....................................................... 98
Tray/bin manual sensor test ...................................................................... 99
PS205 Tray 1 Paper sensor test ................................................. 101
PS3 Tray 2 Paper sensor test ..................................................... 102
SW235 Tray 2 Cassette sensor test ........................................... 103
ENWW vii
PS4 Output bin full sensor test ................................................... 104
PS451 Tray 3 paper sensor test ................................................ 105
PS461 Tray 3 cassette sensor test .............................................. 106
PS451 Tray 4 paper sensor test ................................................ 107
PS461 Tray 4 cassette sensor test .............................................. 108
Print/stop test ........................................................................................ 108
Component tests ..................................................................................... 109
Control-panel tests ................................................................... 109
Half self-test ............................................................................ 110
Drum rotation test check ........................................................... 110
Component test (special-mode test) ............................................ 110
Diagrams ............................................................................................................. 112
Block diagrams ...................................................................................... 112
Location of connectors ............................................................................ 114
DC controller connections ......................................................... 114
Formatter connections .............................................................. 115
Plug/jack locations ................................................................................. 116
Locations of major components ................................................................ 116
General timing charts ............................................................................. 120
Circuit diagrams .................................................................................... 121
Internal print-quality test pages ................................................................................ 123
Clean the paper path ............................................................................. 123
Set up an auto cleaning page ................................................... 123
Print a configuration page ....................................................................... 124
Configuration page ................................................................. 124
HP embedded Jetdirect page .................................................... 125
Finding important information on the configuration pages ............ 126
Print quality troubleshooting tools ............................................................................ 127
Repetitive defects ruler ............................................................................ 127
Control panel menus .............................................................................................. 128
Administration menu ............................................................................... 128
Reports menu .......................................................................... 128
General Settings menu ............................................................. 129
Copy Settings menu ................................................................. 136
Scan/Digital Send Settings menu .............................................. 144
Fax Settings menu ................................................................... 155
General Print Settings menu ...................................................... 169
Default Print Options menu ....................................................... 171
Display Settings menu .............................................................. 172
Manage Supplies menu ........................................................... 175
Manage Trays menu ................................................................ 177
viii ENWW
Network Settings menu ............................................................ 179
Troubleshooting menu .............................................................. 193
Device Maintenance menu ...................................................................... 196
Backup/Restore menu .............................................................. 196
Calibration/Cleaning menu ...................................................... 197
USB Firmware Upgrade menu ................................................... 199
Service menu .......................................................................... 199
Interpret control-panel messages ............................................................................. 200
Control-panel message types ................................................................... 200
Control-panel messages .......................................................................... 200
10.0X.Y0 Supply memory error ................................................ 200
10.23.50 ............................................................................... 201
10.23.51 ............................................................................... 201
10.23.52 ............................................................................... 201
10.23.70 Printing Past Very Low ............................................... 201
10.XX.34 Used Supply In Use ................................................... 202
10.XX.40 Genuine HP Supplies Installed .................................... 202
10.XX.40 Unsupported Supply In Use ........................................ 202
10.XX.70 Printing Past Very Low ............................................... 202
10.YY.15 Install Supply10.YY.15 Install Supply .......................... 203
11.00.YY Internal clock error To continue, touch “OK” ................ 203
13.A3.D3 or 13.A4.D4 ........................................................... 204
13.A3.D4 .............................................................................. 204
13.A3.FF or 13.A4.FF ............................................................. 205
13.B2.D1 ............................................................................... 205
13.B2.D2 ............................................................................... 206
13.B2.DD .............................................................................. 207
13.B2.XX ............................................................................... 208
13.B2.XX ............................................................................... 209
13.B9.FF ................................................................................ 209
13.B9.XX ............................................................................... 210
13.B9.XX ............................................................................... 211
13.B9.XX ............................................................................... 212
13.BA.EE or 13.DA.EE ............................................................ 212
13.D3.FF or 13.B2.FF .............................................................. 213
13.D3.XX ............................................................................... 214
13.E1.XX ............................................................................... 215
20.00.00 Insufficient memory: <Device> To continue, touch “OK” 216
21.00.00 Page too complex To continue, touch “OK” ................. 216
30.01.23 Scanner calibration failure ........................................ 216
30.01.36 Upgrade Error Try downloading upgrade again .......... 216
ENWW ix
30.01.43 Scan memory failure To continue turn off then on ......... 217
30.01.YY Scanner failure To continue turn off then on ................. 217
30.WX.YZ Scanner fan failure To continue turn off then on .......... 218
31.01.47 Document feeder not detected .................................... 218
31.03.22 Scanner calibration failure ........................................ 218
31.13.03 Document feeder pick error ....................................... 218
31.WX.10 Scanner failure To continue turn off then on ................ 219
31.WX.15 Jam in document feeder ........................................... 219
33.WX.YZ Used board/disk installed ........................................ 219
40.00.01 USB I/O buffer overflow To continue, touch “OK” ........ 220
41.02.00 Error ....................................................................... 220
41.03.YZ Unexpected size in Tray <X> ..................................... 220
41.03.YZ Unexpected size in Tray <X> To use another tray, touch
"Options" ............................................................................... 221
49.XX.YY Error To continue turn off then on ................................ 221
50.WX.YZ Fuser error To continue turn off then on ...................... 222
51.00.YY Error To continue turn off then on ................................ 225
52.XX.00 To continue turn off then on ........................................ 226
54.XX.YY Error ....................................................................... 226
55.XX.YY DC Controller error To continue turn off then on ............ 226
56.00.YY Error To continue turn off then on ................................ 227
57.00.0X Error ....................................................................... 227
58.00.04 Error To continue turn off then on ............................... 227
59.00.00 Error To continue turn off then on ............................... 227
59.00.20 Error To continue turn off then on ............................... 227
62.00.00 No system To continue turn off then on ........................ 228
69.X ERROR To continue, touch “OK” ........................................ 228
70.00.00 Error To continue turn off then on ............................... 228
81.WX.00 Wireless Network Error To continue turn off then on .... 228
81.WX.YZ Embedded JetDirect Error To continue turn off then on .. 229
89.19.5C Error ....................................................................... 229
98.00.01 or 98.01.00 Corrupt data in firmware volume ............. 229
98.00.02 Corrupt data in solutions volume ................................ 230
98.00.03 Corrupt data in configuration volume .......................... 230
98.00.04 Corrupt data in job data volume ................................ 230
99.00.01 Upgrade not performed file is corrupt ......................... 230
99.00.02 Upgrade not performed timeout during receive ............ 230
99.00.03 Upgrade not performed error writing to disk ................ 231
99.00.04 Upgrade not performed timeout during receive ............ 231
99.00.05 Upgrade not performed timeout during receive ............ 231
99.00.06 Upgrade not performed error reading upgrade ............ 231
x ENWW
99.00.07 Upgrade not performed error reading upgrade ............ 232
99.00.08 Upgrade not performed error reading upgrade ............ 232
99.00.09 Upgrade canceled by user ........................................ 232
99.00.10 Upgrade canceled by user ........................................ 232
99.00.11 Upgrade canceled by user ........................................ 232
99.00.12 Upgrade not performed the file is invalid .................... 233
99.00.14 Upgrade not performed the file is invalid .................... 233
99.00.2X ............................................................................... 233
99.09.60 Unsupported Disk ..................................................... 234
99.09.61 Unsupported disk ..................................................... 234
99.09.64 Disk malfunction ....................................................... 234
99.09.65 Disk data error ......................................................... 234
99.09.66 No disk data installed ............................................... 235
99.09.67 Disk is not bootable please download firmware ........... 235
99.XX.YY ............................................................................... 235
<Binname> full Remove all paper from bin ................................. 235
[File System] device failure To clear press OK ............................. 235
[File System] file operation failed To clear press OK .................... 236
[File System] file system is full To clear press OK ......................... 236
[File System] is not initialized .................................................... 236
[File System] is write protected .................................................. 236
A second USB wireless networking accessory has been detected . . 236
Accept bad signature ............................................................... 237
Bad optional tray connection .................................................... 237
Black Cartridge low ................................................................. 237
Black Cartridge very low .......................................................... 237
Black Cartridge very low To continue, touch “OK” ...................... 238
Canceling <jobname> ............................................................. 238
Cartridge ship mode ................................................................ 238
Checking paper path ............................................................... 238
Chosen personality not available To continue, touch “OK” ........... 238
Clean the rollers ...................................................................... 239
Cleaning disk <X>% complete Do not power off ......................... 239
Cleaning do not grab paper ..................................................... 239
Cleaning... ............................................................................. 239
Clearing event log ................................................................... 240
Clearing paper path ................................................................ 240
Close inner flap in duplexer ...................................................... 240
Close rear door ...................................................................... 240
Close rear door Or touch OK to print to the rear bin ................... 240
Close top cover ....................................................................... 241
ENWW xi
Creating cleaning page ........................................................... 241
Data received ......................................................................... 241
Digital send communication error .............................................. 241
Disk full Delete stored jobs ........................................................ 242
Disk low Delete stored jobs ....................................................... 242
Document feeder bin full .......................................................... 242
Document feeder is empty ........................................................ 242
Document Feeder Kit low .......................................................... 242
Document Feeder Kit very low ................................................... 243
Document Feeder Kit very low To continue, touch “OK” ............... 243
Document feeder top cover open ............................................... 243
Event log is empty ................................................................... 243
Expected drive missing ............................................................. 243
Fax is disabled – ignoring call .................................................. 244
Flatbed cover open .................................................................. 244
HP Secure Hard Drive disabled ................................................. 244
Incompatible <supply> ............................................................. 244
Incompatible supplies .............................................................. 244
Initializing scanner, please wait ................................................ 245
Initializing... ........................................................................... 245
Install Black Cartridge .............................................................. 245
Install Fuser Unit ...................................................................... 245
Install supplies ........................................................................ 246
Internal disk device failure To clear touch “Clear” ....................... 246
Internal disk file operation failed To clear touch “Clear” ............... 246
Internal disk file system is full To clear touch “Clear” .................... 246
Internal disk is write protected To clear touch “Clear” .................. 246
Internal disk not found ............................................................. 247
Internal disk not functional ........................................................ 247
Internal disk not initialized To clear touch “Clear” ....................... 247
Internal disk spinning up .......................................................... 247
Load Tray 1 [Type] [Size] ......................................................... 247
Load Tray 1 [Type] [Size] To continue, touch “OK” ...................... 247
Load Tray <X>: [Size] .............................................................. 248
Load Tray <X>: [Size] To continue, touch “OK” .......................... 248
Load Tray <X>: [Size] To use another tray, touch "Options" ......... 248
Load Tray <X>: [Type], [Size] ................................................... 249
Load Tray <X>: [Type], [Size] To use another tray, touch
"Options" ............................................................................... 249
Manually feed output stack Then touch "OK" to print second sides 249
Manually feed: [Size] .............................................................. 249
xii ENWW
Manually feed: [Size] To continue, touch “OK” ........................... 250
Manually feed: [Size] To use another tray, touch "Options" .......... 250
Manually feed: [Type], [Size] To continue, touch “OK” ................ 250
Manually feed: [Type], [Size] To use another tray, touch
"Options" ............................................................................... 251
No job to cancel ..................................................................... 251
Open rear door ...................................................................... 251
Output Bin full ......................................................................... 251
Paperless mode ....................................................................... 251
Printing Engine Test... .............................................................. 252
Printing stopped To continue, touch “OK” ................................... 252
Processing digital send job ....................................................... 252
RAM Disk device failure To clear touch “Clear” .......................... 252
RAM Disk file operation failed To clear touch “Clear” .................. 252
RAM Disk file system is full To clear touch “Clear” ....................... 252
RAM Disk is write protected To clear touch “Clear” ..................... 253
RAM Disk not initialized To clear touch “Clear” .......................... 253
Remove cartridge lock ............................................................. 253
Remove the toner cartridge ....................................................... 253
Replace Black Cartridge ........................................................... 253
Replace Document Feeder Kit ................................................... 254
Replace supplies ..................................................................... 254
Roller cleaning is recommended ................................................ 254
ROM disk device failed To clear touch “Clear” ........................... 255
ROM disk file operation failed To clear touch “Clear” .................. 255
ROM disk file system is full To clear touch “Clear” ....................... 255
ROM disk is write protected To clear touch “Clear” ..................... 255
ROM disk not initialized To clear touch “Clear” .......................... 255
Size mismatch in Tray <X> ....................................................... 256
Standard bin full Remove all paper from bin ............................... 256
Supplies low ........................................................................... 256
Supplies very low To continue, touch “OK” ................................. 256
Supply memory warning .......................................................... 257
Tray <X> empty: [Size] ............................................................ 257
Tray <X> empty: [Type], [Size] ................................................. 257
Tray <X> open ........................................................................ 257
Tray <X> overfilled Remove excess paper .................................. 258
Tray <X> overfilled To use another tray, touch "Options" ............. 258
Type mismatch Tray <X> .......................................................... 258
Unable to cancel firmware update job ....................................... 259
Unable to install the firmware ................................................... 259
ENWW xiii
Unsupported drive installed ...................................................... 259
Unsupported supply in use ........................................................ 259
Unsupported supply installed .................................................... 260
Unsupported supply installed To continue, touch “OK” ................. 260
Unsupported tray configuration ................................................. 260
Unsupported USB accessory detected Remove USB accessory ....... 260
Upgrade complete To continue turn off then on ........................... 261
USB accessory needs too much power Remove USB and turn off
then on .................................................................................. 261
USB accessory not functional .................................................... 261
USB hubs are not fully supported Some operations may not work
properly ................................................................................. 261
USB is write protected To clear touch “Clear” ............................. 261
USB not initialized To clear touch “Clear” .................................. 262
USB storage accessory removed Clearing any associated data ..... 262
USB storage device failure To clear touch “Clear” ....................... 262
USB storage file operation failed To clear touch “Clear” .............. 262
USB storage file system is full To clear touch “Clear” ................... 262
Used supply in use .................................................................. 262
Used supply installed To continue, touch “OK” ............................ 263
Warming up scanner ............................................................... 263
Wireless Configuration Mode ................................................... 263
Wireless is not configured ........................................................ 263
Event log messages ............................................................................................... 264
Print or view an event log ........................................................................ 265
Clear an event log .................................................................................. 265
Event log message table .......................................................................... 266
Clear jams .......................................................................................................................... 275
Auto-navigation for clearing jams ............................................................................ 275
Common causes of jams ........................................................................................ 275
Jam locations ........................................................................................................ 276
Clear jams in the document feeder .......................................................................... 277
Clear jams in the document feeder (M525c model) ................................................... 279
Clear jams in the output-bin area ............................................................................ 280
Clear jams in Tray 1 .............................................................................................. 281
Clear jams in Tray 2 or an optional 500-sheet tray ................................................... 284
Clear jams in the toner-cartridge area ...................................................................... 287
Clear jams in the rear-door and the fuser area .......................................................... 289
Clear jams in the duplexer ..................................................................................... 292
Jam causes and solutions ....................................................................................... 298
Solve paper-handling problems .............................................................................................. 302
xiv ENWW
The product picks up multiple sheets of paper ........................................................... 302
The product does not pick up paper ........................................................................ 302
The document feeder jams, skews, or picks up multiple sheets of paper ....................... 303
Use manual print modes ....................................................................................................... 304
Solve image-quality problems ................................................................................................ 307
Image defect examples .......................................................................................... 307
Clean the product ................................................................................................................ 315
Clean the control-panel display ............................................................................... 315
Print a cleaning page ............................................................................................ 315
Check the scanner glass for dirt or smudges ............................................................. 316
Clean the pickup rollers and separation pad in the document feeder ........................... 318
Solve performance problems ................................................................................................. 320
Solve connectivity problems ................................................................................................... 321
Solve USB connection problems .............................................................................. 321
Solve wired network problems ................................................................................ 321
The product has a poor physical connection. ............................................. 321
The computer is using the incorrect IP address for the product ...................... 321
The computer is unable to communicate with the product ............................ 322
The product is using incorrect link and duplex settings for the network .......... 322
New software programs might be causing compatibility problems ................ 322
The computer or workstation might be set up incorrectly .............................. 322
The product is disabled, or other network settings are incorrect .................... 322
Service mode functions ......................................................................................................... 323
Service menu ........................................................................................................ 323
Product resets ....................................................................................................... 326
Restore factory-set defaults ....................................................................... 326
Restore the service ID .............................................................................. 326
Product cold reset ................................................................................... 327
Format Disk and Partial Clean functions ................................................................... 327
Active and repository firmware locations ................................................... 327
Partial Clean ......................................................................................... 328
Execute a 3 Partial Clean ......................................................... 328
Format Disk ........................................................................................... 329
Execute a 2 Format Disk ........................................................... 329
Solve fax problems ............................................................................................................... 331
Checklist for solving fax problems ........................................................................... 331
What type of phone line are you using? .................................................... 331
Are you using a surge-protection device? .................................................. 331
Are you using a phone company voice-messaging service or an answering
machine? .............................................................................................. 332
Does your phone line have a call-waiting feature? ...................................... 332
ENWW xv
Check fax accessory status ..................................................................................... 333
General fax problems ............................................................................................ 334
Use Fax over VoIP networks .................................................................................... 335
Problems with receiving faxes ................................................................................. 336
Problems with sending faxes ................................................................................... 338
Fax error codes .................................................................................................... 340
Fax error messages on the product control panel ...................................................... 340
Send-fax messages ................................................................................. 341
Receive-fax messages ............................................................................. 342
Service settings ..................................................................................................... 343
Settings in the Troubleshooting menu ........................................................ 343
Product upgrades ................................................................................................................. 344
Determine the installed revision of firmware .............................................................. 344
Perform a firmware upgrade ................................................................................... 344
Embedded Web Server ........................................................................... 344
USB storage device (Preboot menu) .......................................................... 345
USB storage device (control-panel menu) ................................................... 346
Web Jetadmin (WJA) .............................................................................. 347
Upload firmware files to WJA ................................................... 347
Appendix A Service and support ..................................................................................... 349
Hewlett-Packard limited warranty statement ............................................................................. 350
HP's Premium Protection Warranty: LaserJet toner cartridge limited warranty statement ................. 352
HP policy on non-HP supplies ................................................................................................ 353
HP anticounterfeit Web site ................................................................................................... 354
Data stored on the toner cartridge .......................................................................................... 355
End User License Agreement .................................................................................................. 356
OpenSSL ............................................................................................................................. 359
Customer self-repair warranty service ..................................................................................... 360
Customer support ................................................................................................................. 361
Appendix B Product specifications ................................................................................... 363
Physical specifications .......................................................................................................... 364
Power consumption, electrical specifications, and acoustic emissions .......................................... 364
Environmental specifications .................................................................................................. 364
Appendix C Regulatory information ................................................................................. 365
FCC regulations ................................................................................................................... 366
Environmental product stewardship program ........................................................................... 367
Protecting the environment ...................................................................................... 367
xvi ENWW
Ozone production ................................................................................................. 367
Power consumption ............................................................................................... 367
Toner consumption ................................................................................................ 367
Paper use ............................................................................................................. 367
Plastics ................................................................................................................. 367
HP LaserJet print supplies ....................................................................................... 368
Return and recycling instructions ............................................................................. 368
United States and Puerto Rico .................................................................. 368
Multiple returns (more than one cartridge) .................................. 368
Single returns .......................................................................... 368
Shipping ................................................................................ 368
Non-U.S. returns .................................................................................... 369
Paper .................................................................................................................. 369
Material restrictions ............................................................................................... 369
Disposal of waste equipment by users ...................................................................... 370
Electronic hardware recycling ................................................................................. 370
Chemical substances ............................................................................................. 370
Material Safety Data Sheet (MSDS) ......................................................................... 370
For more information ............................................................................................. 370
Declaration of conformity ...................................................................................................... 372
Declaration of conformity (fax models) .................................................................................... 374
Certificate of Volatility .......................................................................................................... 376
Certificate of Volatility (M525c) ............................................................................................. 378
Safety statements ................................................................................................................. 380
Laser safety .......................................................................................................... 380
Canadian DOC regulations .................................................................................... 380
VCCI statement (Japan) .......................................................................................... 380
Power cord instructions .......................................................................................... 380
Power cord statement (Japan) ................................................................................. 380
EMC statement (China) .......................................................................................... 381
EMC statement (Korea) .......................................................................................... 381
EMI statement (Taiwan) .......................................................................................... 381
Laser statement for Finland ..................................................................................... 381
GS statement (Germany) ........................................................................................ 383
Substances Table (China) ....................................................................................... 383
Restriction on Hazardous Substances statement (Turkey) ............................................. 383
Restriction on Hazardous Substances statement (Ukraine) ........................................... 383
Additional statements for telecom (fax) products ....................................................................... 384
EU Statement for Telecom Operation ....................................................................... 384
New Zealand Telecom Statements ........................................................................... 384
Additional FCC statement for telecom products (US) .................................................. 384
ENWW xvii
Telephone Consumer Protection Act (US) .................................................................. 385
Industry Canada CS-03 requirements ...................................................................... 385
Vietnam Telecom wired/wireless marking for ICTQC Type approved products ............. 386
Japan Telecom Mark ............................................................................................. 386
Index ............................................................................................................................... 387
xviii ENWW
1 Theory of operation
Basic operation
●
Formatter-control system
●
Engine-control system
●
Image-formation system
●
Pickup, feed, and delivery system
●
Tray 1 or Tray 2
●
Additional tray
●
Scanning/image capture system
●
●
Stapler
ENWW 1
Basic operation
Major systems
The product contains the following systems:
Engine-control system
●
Laser/scanner system
●
Image-formation system
●
Media feed system
●
Option
●
Product block diagram
Figure 1-1 Product block diagram
LASER SCANNER SYSTEM
ENGINE CONTROL SYSTEM
IMAGE-FORMATION SYSTEM
MEDIA FEED SYSTEM
OPTION
2 Chapter 1 Theory of operation ENWW
Sequence of operation
The DC controller in the engine-control system controls the operational sequences of the product. The
following table describes durations and operations for each period of a print operation from when the
product is turned on until the motor stops rotating.
Normal sequence of operation
Table 1-1 Sequence of operation
Name Timing Purpose
WAIT From the time the power switch is turned on or the
door is closed until the product is ready for a print
operation.
STBY (standby) From the end of the WAIT or LSTR period until either
a print command is sent or the power switch is
turned off.
INTR (initial
rotation)
PRINT From the end of the INTR period until the last sheet
LSTR (last
rotation)
From the time the print command is received until the
temperature of the fuser unit reaches its targeted
temperature.
completes the fuser operation.
From the end of the PRINT period until the main
motor stops rotating.
Brings the product to printable condition. The
product performs the following during the operation:
Detects the toner cartridge
●
Maintains the product in printable condition.
Starts up the high-voltage biases, the laser/scanner,
and the fuser unit for printing.
Forms the image on the photosensitive drum based
on the VIDEO signals from the formatter. Transfers
and fuses the toner image to the paper.
Moves the last printed sheet out of the product.
The product enters the INTR period as the LSTR
period is completed, if the formatter sends another
print command.
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Basic operation
3
Formatter-control system
The formatter is responsible for the following procedures:
Controlling sleep mode
●
Receiving and processing print data from the various product interfaces
●
Monitoring control-panel functions and relaying product-status information (through the control
●
panel and the network or bidirectional interface)
Developing and coordinating data placement and timing with the DC controller PCA
●
Storing font information
●
Communicating with the host computer through the network or the bidirectional interface
●
The formatter receives a print job from the network or bidirectional interface and separates it into
image information and instructions that control the printing process. The DC controller PCA
synchronizes the image-formation system with the paper-input and -output systems, and then signals the
formatter to send the print-image data.
The formatter also provides the electrical interface and mounting locations for one EIO card and an
additional DIMM.
Auto on/Auto off mode
This feature conserves power after the product has been idle for an adjustable period of time. When
the product is in this mode, the control-panel backlight is turned off, but the product retains all settings,
downloaded fonts, and macros. The setting is enabled by default. The product enters this mode after a
60-minute idle time or by touching the sleep button.
Power
consumption
Off Less than 0.5W Off Manually:
Status of
power
button light
How to
enable
mode
press the
power button
Automatically:
sleep timer
expires
How to
disable mode
(put in Ready
state)
Press the power
button
Relative time
to Ready
state
Longest
Controlpanel term
4 Chapter 1 Theory of operation ENWW
Power
consumption
Status of
power
button light
How to
enable
mode
How to
disable mode
(put in Ready
state)
Relative time
to Ready
state
Controlpanel term
Auto off Less than 1W Blinks at 3
second intervals
Sleep (A1W) Approximately6WBlinks at 3
second intervals
Sleep timer
expires
Sleep timer
expires
Printing or
network
maintenance
tasks
Insert or remove
paper from the
ADF
Open or close
the scanner
Open the
cartridge door
Touch the
control panel
touchscreen
Press the power
button
Printing or
network
maintenance
tasks
Insert or remove
paper from the
ADF
Longer than
Sleep mode
Shortest All events
Network port
Open or close
the scanner
Open the
cartridge door
Touch the
control panel
touchscreen
Press the power
button
NOTE: Product error messages override the Sleep message. The product enters sleep mode at the
appropriate time, but the error message continues to appear.
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Formatter-control system
5
Input/output
The product receives print data primarily from the embedded HP Jetdirect print server. The product also
has a USB 2.0 port for connecting directly to a computer.
CPU
The formatter incorporates a 800 MHz processor.
Memory
The random access memory (RAM) on the formatter PCA contains the page, I/O buffers, and the font
storage area. It stores printing and font information received from the host system, and can also serve
to temporarily store a full page of print-image data before the data is sent to the print engine.
NOTE: If the product encounters a problem when managing available memory, a clearable warning
message displays on the control-panel display.
Firmware
The firmware is contained on the hard disk drive (HDD) (M525f model only) or solid state module
(SSM) (M525dn model only). A remote firmware upgrade process is available, which overwrites the
firmware.
Nonvolatile memory
The product uses nonvolatile memory (NVRAM) to store device and user configuration settings. The
contents of NVRAM are retained when the product is turned off or disconnected.
PJL overview
The printer job language (PJL) is an integral part of configuration, in addition to the standard printer
command language (PCL). With standard cabling, the product can use PJL to perform a variety of
functions such as these:
Two-way communication. The product communicates with the host computer through a network
●
connection or a USB connection. The product can inform the host about such things as the controlpanel settings, and the control-panel settings can be changed from the host.
Dynamic I/O switching. The product uses this switching to be configured with a host on each I/O.
●
The product can receive data from more than one I/O simultaneously, until the I/O buffer is full.
This can occur even when the product is offline.
Context-sensitive switching. The product can automatically recognize the personality (PS or PCL) of
●
each job and configure itself to serve that personality.
Isolation of print environment settings from one print job to the next. For example, if a print job is
●
sent to the product in landscape mode, the subsequent print jobs print in landscape mode only if
they are formatted for landscape printing.
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PML
The printer management language (PML) allows remote configuration and status read-back through the
I/O ports.
Control panel
The formatter sends and receives product status and command data to and from the control-panel PCA.
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Formatter-control system
7
Engine-control system
The engine-control system coordinates all product functions, according to commands that the formatter
sends. The engine-control system drives the system, the image formation system, and the pickup/feed/
delivery system.
The engine control system contains the following major components:
DC controller
●
Low-voltage power supply
●
High-voltage power supply
●
Figure 1-2 Engine-control system
Engine control system
Formatter
Laser scanner system
DC controller
Image-formation system
Low-voltage
power supply
High-voltage
power supply
Pickup, feed and delivery
system
Accessory
8 Chapter 1 Theory of operation ENWW
Motors, fans, clutches, solenoids, switches, and sensors
Figure 1-3 Motors
Fuser motor
Main motor
Table 1-2 Motors
Description Components driven Fault detection
Main motor (M8001)
Fuser motor (M8002)
Pickup roller
●
Feed roller
●
Transfer roller
●
Photosensitive drum
●
Developing roller
●
Duplex repickup roller
●
Pressure roller
●
Delivery roller
●
Fuser-delivery roller
●
Duplex-feed roller
●
Yes
Yes
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Engine-control system
9
Figure 1-4 Fans
Main fan
Sub fan
Table 1-3 Fans
Description Area cooled Type Speed
Main fan (FM1) Inside the product Intake Full
Sub fan (FM2) Inside the product Intake Full
Figure 1-5 Solenoids and clutches (product)
PS4
PS1
M8001
SW501
PS8001
M8002
PS2
PS502
PS225
SL2
PS215
PS3
SL1
PS205
SW235
Table 1-4 Solenoids and clutches (product)
Item Description
SL1 Tray 1 (multipurpose tray) pickup solenoid
SL2 Cassette (Tray 2) pickup solenoid
10 Chapter 1 Theory of operation ENWW
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