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HP 4550 Service Manual - Page 368

Commercial Service and Support Organization-Europe CSSO-E 41 - color laserjet error 54 2

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characters, troubleshooting dropouts 257 voids 257 wavy 262 charge development 106 eliminator 108 laser exposure 106 primary 105 transfer 107 checklist, pre-troubleshooting 212 circuit assemblies 40 breaker, diagram 317 capacity 22 cleaning printer and accessories 78 toner density sensor 85 waste toner operation 109, 113 cleaning brush 85 cleaning roller clutch (CL3) operations 114 removing 189 cleaning roller, operations 114 clearing error messages 217, 282 event log 297 clothing, toner on 37 clutches CL1 (registration) 123 CL2 (ITB unit contact/separation) 114, 116, 190 CL3 (ITB cleaning roller) 114, 189 CL4 (secondary transfer roller) 114, 115, 192 diagrams 309, 311, 314 removing 189 CMYK 248 coated media 30 collimator lens 120 color automatic adjustment 246 balance, adjusting 250 calibration 54 Calibration Menu 281 CMYK 248 density test 243 halftone settings 245 HP ColorSmart II 246 map settings 246 missing 260 page count tracking 296 PANTONE matching 248 PostScript 250 settings 244, 246 software applications 249 sRGB 246 troubleshooting 257 variation 244 Color LaserJet 4500 family printer models 14 Color LaserJet Transparencies, ordering 326 color print speed 17 colored paper 31 ColorLaserJet Soft Gloss Paper 326 colorless output, troubleshooting 257 ColorSmart II 246 commands DOS 269 PJL 269 Commercial Service and Support Organization-America (CSSO-A) 41 Commercial Service and Support Organization-Europe (CSSO-E) 41 communication, bidirectional establishing 58 troubleshooting 268 compact disc, service part information 42 components diagrams 337 replacing 40, 139 condensation 213 Configuration Menu 276 configuration page 287 configure printer page 286 configuring EIO 67 network parameters 70 Novell NetWare 70, 71 Windows networks 71 connecting 10/100Base-TX network 66 10Base2 network 65 10BaseT network 66 LocalTalk networks 64 networks 64 parallel cable 59 power cord 50 connectors, diagrams 314, 318, 319 consumables HP 83 locating 84 ordering 41, 325 replacement intervals 83, 142 replacing 85 status information 290 storing 23 control panel Calibration Menu 281 changing overlay 154 Configuration Menu 276 display language 61 EIO Menu 280 error messages 217 formatter PCB 135 I/O menu 280 Information Menu 273 locating 25 locking 73 menu map 271 Paper Handling Menu 274 Printing Menu 278 Private/Stored Jobs Menu 284 Quick Copy Jobs Menu 283 removing 153 Resets Menu 282 service mode 293 control panel overlays installing 154 ordering 326 controller, DC assembly diagrams 333 connectors 318 formatter PCB 135 operations 132 removing 158 replacing 297 Copy Jobs Menu, Quick 283 cord, power connecting 50 unplugging 139 CorelDRAW 247, 249 366 Index C7085-90921

Section	Page
Contents	7
List of Figures	9
List of Tables	13
Printer description	15
Printer features	16
Identification	20
Model and serial numbers	20
Power and regulatory information	21
Site requirements	22
Space requirements	23
Electrical specifications	24
Environmental specifications	24
Consumable storage requirements	25
Printer specifications	25
Printer assemblies	27
Media requirements	30
Selecting print media	30
Media specifications	30
Supported media weights and sizes	31
Non-supported media	32
Printing on special media	33
Environmental Product Stewardship Program	36
Regulatory statements	38
HP Color LaserJet 4500	38
HP Color LaserJet 4550	38
Safety information	39
Laser safety statement	39
Material Safety Data Sheet	39
Toner safety	39
Laser statement for Finland	40
Service approach	41
Service approach	42
Parts and supplies	43
Ordering parts	43
Ordering consumables	43
Exchange program	44
Consumables	44
World Wide Web	44
HP Service Parts Information Compact Disc	44
HP Support Assistant Compact Disc	44
Ordering related documentation and software	45
Warranty statement	46
Hewlett-Packard warranty statement	46
Onsite service agreements	47
Installation and configuration	49
Unpack the printer	50
Package contents	50
Installation	52
Using the parallel cable	60
Connecting to a network	66
Enhanced I/O (EIO) configuration	69
HP JetDirect print servers	69
LocalTalk I/O	70
CPU	70
Fast InfraRed Receiver (optional)	70
System requirements	70
Printer drivers	71
Network configuration	72
Configuring the printer for the network	72
Configuring Novell NetWare frame type parameters	72
Configuration tips	73
NetWare 3.x and 4.x based products	73
Windows 3.1, Windows 95, and Windows NT 3.51 and 4.0 networks	73
IBM OS/2 LAN Server and Warp Server networks	74
LocalTalk network	74
UNIX networks	74
Setting network security on the printer	75
Locking the control panel	76
Using an ASCII PJL escape sequence to set network security	77
Printer maintenance	79
Cleaning the printer and accessories	80
Cleaning spilled toner	80
Approximate replacement intervals for consumable items	82
Imaging drum life	82
Replacement intervals for consumables	85
Locating consumables	86
Replacing consumable items	87
DIMM configuration	100
Adding memory	100
Theory of operation	103
Introduction	104
Basic operation	105
Image formation	106
Primary charge	107
Laser exposure	108
Development	108
Transfer	109
Waste toner cleaning	111
Fusing	112
Toner density	113
Mechanical system	114
Photosensitive drum cartridge	114
Intermediate transfer belt	115
Toner carousel	120
Laser/scanner operation	122
Paper path	124
Introduction	124
Tray 2 (cassette)	125
Tray 1 (multi-purpose tray)	126
Tray 3 (500-sheet paper feeder)	128
Paper size detection	129
Fusing and delivery unit	129
Duplex unit paper path	130
DC controller subsystem	134
Motors and fans	135
Formatter system	137
Control panel	137
Power supplies	137
Power supply overview	137
High-voltage power supply	138
Removal and replacement	139
Introduction	141
Removal and replacement strategy	141
Repair notices	141
Caution regarding electrostatic discharge (ESD)	141
Determining the printer version	142
Required tools	142
Types of screws	143
Consumable assemblies	144
Covers, drawers, and top and front assemblies	146
Top cover	146
Left side cover	147
Right side cover	148
Rear door	149
Right rear cover	150
Drum drawer (top drawer) cover	151
ITB drawer (middle drawer) cover	153
ITB drawer (middle drawer)	154
Control panel	155
Installing or changing the control panel overlay	156
Front right cover	157
Radio Frequency Interference (RFI) shield	158
Laser/scanner assembly	159
DC controller	160
Developing PCB	161
Top cover switch assembly	163
Drum drawer (top drawer) assembly	165
Densitometer assembly	168
Right side assemblies	170
Formatter	170
Formatter PCB	171
Formatter pan assembly	172
Power supply	175
High-voltage power supply	176
Drum drive assembly	178
Large fan housing	180
Carousel drive assembly	181
Paper size switch PCB	183
Left side assemblies	184
Drawer switch assembly	184
Paper feed PCB	185
Fusing motor (M1)	187
Paper path pick-up motor (M2)	189
Paper pick solenoid (SL2)	190
ITB cleaning roller clutch (CL3)	191
ITB clutch (CL2) assembly	192
Transfer roller cam clutch (CL4)	194
Left side gears	195
Rear assemblies	197
Large right side fan	197
Left side fan	199
Face-down assembly	201
Internal assemblies	202
Cartridge carousel assembly	202
Toner catch tray and paper transport assembly	206
Paper pick rollers	207
Star wheel assembly	208
Transfer roller assembly	209
Cam shafts	210
Troubleshooting	211
Introduction	213
Troubleshooting process	214
Pre-troubleshooting checklist	214
Troubleshooting flowchart	215
Troubleshooting power-on	218
Printer error troubleshooting	219
Printer messages	219
Alphabetical printer error messages	219
Numerical printer error messages	228
Paper path troubleshooting	239
Jams	239
Jam locations	240
Jam locations by error message	241
General paper-path checklist	243
Print media checklist	243
Jam recovery	244
Image formation troubleshooting	245
Print density test and color checks	245
Understanding color variations	246
Color selection process	246
Customizing color output through printer drivers	246
HP ColorSmart II	248
Color management options	248
Matching colors	249
Four-color printing (CMYK)	250
Matching PANTONE® colors	250
Automatic PANTONE ® calibration	250
Adjusting color balance	252
Image defects	255
Background scatter	256
Banding and horizontal lines	256
Black lines	257
Black or partially black pages	257
Blank or white pages	258
Character voids	259
Colorless output (black only)	259
Distorted image	259
Dropouts	259
Faded print, faded areas, or faded vertical streaks	260
Full-page ghosting	260
Gray streaks	260
Irregular, raised spots or stray toner	261
Light, dark, or faded print	261
Light black or no black print	261
Loose toner	262
Mottled or marbled output	262
Random spots	262
Sharkskin (rough, mottled printing)	262
Single color missing	262
Sunburn	262
Toner smear	263
Vertical lines or streaks	263
Vertical black lines	263
Vertical white lines	263
Wavy characters	264
Overhead transparency defects	265
Dull or dark transparencies	265
Incorrect image on transparencies	265
Repetitive defects on transparencies	265
Streaking on transparencies	266
Repetitive defects troubleshooting	267
Imaging drum defects	267
Repetitive defect ruler	268
Interface troubleshooting	270
Communications checks	270
EIO troubleshooting	270
AUTOEXEC.BAT standard configurations	271
Printer Job Language (PJL) commands	271
Control panel troubleshooting	273
Control panel access	273
Printing a menu map	273
Information Menu	275
Paper Handling Menu	276
Configuration Menu	278
Printing Menu	280
I/O Menu	282
EIO Menu	282
Calibration Menu	283
Resets Menu	284
Hard disk dependent menus	285
Private/Stored Jobs menu	286
Troubleshooting tools	287
Embedded Web server	287
To use the embedded Web server	287
Embedded Web server page sets	287
Networking page set	289
Printer configuration page	289
Supplies status page	292
Interpreting the supplies status page	292
Usage page	293
Interpreting the usage page	293
Event log	294
Hard disk file directory page	294
Service mode	295
Accessing the service mode	295
Description of Service Menu items	298
Diagnostics mode	302
Entering diagnostics mode	302
Formatter diagnostics	302
Engine diagnostics	304
Engine test	308
NVRAM initialization	309
Diagrams	310
Parts and diagrams	325
Introduction	326
Ordering parts	327
Consumables, accessories, and supplies	327
Common fasteners	330
Illustrations and parts lists	331
Determining the printer version	331
Alphabetical parts list	357
Numerical parts list	361

Match case Limit results 1 per page

366

Index

C7085-90921

characters, troubleshooting

dropouts 257

voids 257

wavy 262

charge

development 106

eliminator 108

laser exposure 106

primary 105

transfer 107

checklist, pre-troubleshooting 212

circuit

assemblies 40

breaker, diagram 317

capacity 22

cleaning

printer and accessories 78

toner density sensor 85

waste toner operation 109, 113

cleaning brush 85

cleaning roller clutch (CL3)

operations 114

removing 189

cleaning roller, operations 114

clearing

error messages 217, 282

event log 297

clothing, toner on 37

clutches

CL1 (registration) 123

CL2 (ITB unit contact/separation) 114, 116, 190

CL3 (ITB cleaning roller) 114, 189

CL4 (secondary transfer roller) 114, 115, 192

diagrams 309, 311, 314

removing 189

CMYK 248

coated media 30

collimator lens 120

color

automatic adjustment 246

balance, adjusting 250

calibration 54

Calibration Menu 281

CMYK 248

density test 243

halftone settings 245

HP ColorSmart II 246

map settings 246

missing 260

page count tracking 296

PANTONE matching 248

PostScript 250

settings 244, 246

software applications 249

sRGB 246

troubleshooting 257

variation 244

Color LaserJet 4500 family printer models 14

Color LaserJet Transparencies, ordering 326

color print speed 17

colored paper 31

ColorLaserJet Soft Gloss Paper 326

colorless output, troubleshooting 257

ColorSmart II 246

commands

DOS 269

PJL 269

Commercial Service and Support Organization-America (CSSO-A) 41

Commercial Service and Support Organization-Europe (CSSO-E) 41

communication, bidirectional

establishing 58

troubleshooting 268

compact disc, service part information 42

components

diagrams 337

replacing 40, 139

condensation 213

Configuration Menu 276

configuration page 287

configure printer page 286

configuring

EIO 67

network parameters 70

Novell NetWare 70, 71

Windows networks 71

connecting

10/100Base-TX network 66

10Base2 network 65

10BaseT network 66

LocalTalk networks 64

networks 64

parallel cable 59

power cord 50

connectors, diagrams 314, 318, 319

consumables

HP 83

locating 84

ordering 41, 325

replacement intervals 83, 142

replacing 85

status information 290

storing 23

control panel

Calibration Menu 281

changing overlay 154

Configuration Menu 276

display language 61

EIO Menu 280

error messages 217

formatter PCB 135

I/O menu 280

Information Menu 273

locating 25

locking 73

menu map 271

Paper Handling Menu 274

Printing Menu 278

Private/Stored Jobs Menu 284

Quick Copy Jobs Menu 283

removing 153

Resets Menu 282

service mode 293

control panel overlays

installing 154

ordering 326

controller, DC

assembly diagrams 333

connectors 318

formatter PCB 135

operations 132

removing 158

replacing 297

Copy Jobs Menu, Quick 283

cord, power

connecting 50

unplugging 139

CorelDRAW 247, 249