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HP 4550 Service Manual - Page 371

HP LaserJet Family Print Media Guide 28, HP Color LaserJet Soft Gloss Paper 326 - inkjet cartridges

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fuser assembly diagrams 330 cleaning 78 locating 84 maintenance count 296 replacing 92 fuser kits life span 83 ordering 325 replacement intervals 142 replacing 92 status report, printing 290 fuses 317 fusing operations 110 temperature specifications 31 fusing assembly, diagram 317 fusing delivery rollers 127 fusing motor (M1) operations 114, 127, 133 removing 185 fusing unit pressure release sensor (PS6) 127, 312 G gears diagrams 346 removing 193 ghosting, full-page 258 glossy paper duplexing, avoiding 30 HP Soft Gloss 326 printing 31 supported sizes 29 gray background, troubleshooting 258 gray balance 252 grayscale option 246 guides, ordering 43 H halftone options 245 hard disk dependent menus 283 Hard disk file directory page 292 hard drives, included 14 heavy paper printing 32 supported weights 29 height, printer 23 high-voltage power supply operations 136 removing 174 home page set 286 home position detection sensor (PS5) 114, 223 home position sensor, side registration (PS3105) 130 horizontal lines, troubleshooting 254 housing, removing carousel 200 large fan 178 HP Color LaserJet 4500 family printer models 14 HP Color LaserJet Soft Gloss Paper 326 HP Color LaserJet Transparencies 326 HP ColorSmart II 246 HP Distribution Center 43 HP JetAdmin software 67, 70 C7085-90921 HP JetDirect print servers connecting 10/100Base-TX 66 connecting 10Base2 65 connecting 10Base-T 66 installing 67 ports 64 supported configurations 71 HP LaserJet Family Print Media Guide 28 HP LaserJet Utility for Macintosh 70 HP LocalTalk Cable Kit 72 HP PCL 17 HP Support Assistant 42 HP Toner Cleaning Cloth 78 HP-UX 72 hubs, rollers 94 humidity site requirements 20, 22 storing consumables 23 I I/O Menu 280 I/O switching 58 IBM OS/2 LAN servers 72 ICC color profiles 249 identification page, device 286 Illustrator, Adobe 249 image formation system operations 104 troubleshooting 243 images aligning on page 114 defects, troubleshooting 253 definition 80 drum life 80 imaging drum connector diagram 315 defects 265 installing 57 kits, status report 290 laser exposure 106, 120 life span 80 locating 84 primary charge 105 protecting 139 replacing 88 shipping 54 InDesign, Adobe 250 Information Menu 273 InfraRed Receiver, Fast (FIR) 68 initializing NVRAM 307 inkjet transparencies, avoiding 31 inks, specifications 33 input trays capacity 29 locating 25 margins, setting 299 settings 274 supported media 29 installing imaging drum 57 memory 98 software 59 toner cartridges, older versions 51 interfaces EIO 67 parallel 58 settings 280 standard 17 troubleshooting 268 Index 369

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

C7085-90921

Index

369

fuser

assembly diagrams 330

cleaning 78

locating 84

maintenance count 296

replacing 92

fuser kits

life span 83

ordering 325

replacement intervals 142

replacing 92

status report, printing 290

fuses 317

fusing

operations 110

temperature specifications 31

fusing assembly, diagram 317

fusing delivery rollers 127

fusing motor (M1)

operations 114, 127, 133

removing 185

fusing unit pressure release sensor (PS6) 127, 312

gears

diagrams 346

removing 193

ghosting, full-page 258

glossy paper

duplexing, avoiding 30

HP Soft Gloss 326

printing 31

supported sizes 29

gray background, troubleshooting 258

gray balance 252

grayscale option 246

guides, ordering 43

halftone options 245

hard disk dependent menus 283

Hard disk file directory page 292

hard drives, included 14

heavy paper

printing 32

supported weights 29

height, printer 23

high-voltage power supply

operations 136

removing 174

home page set 286

home position detection sensor (PS5) 114, 223

home position sensor, side registration (PS3105) 130

horizontal lines, troubleshooting 254

housing, removing

carousel 200

large fan 178

HP Color LaserJet 4500 family printer models 14

HP Color LaserJet Soft Gloss Paper 326

HP Color LaserJet Transparencies 326

HP ColorSmart II 246

HP Distribution Center 43

HP JetAdmin software 67, 70

HP JetDirect print servers

connecting 10/100Base-TX 66

connecting 10Base2 65

connecting 10Base-T 66

installing 67

ports 64

supported configurations 71

HP LaserJet Family Print Media Guide 28

HP LaserJet Utility for Macintosh 70

HP LocalTalk Cable Kit 72

HP PCL 17

HP Support Assistant 42

HP Toner Cleaning Cloth 78

HP-UX 72

hubs, rollers 94

humidity

site requirements 20, 22

storing consumables 23

I/O Menu 280

I/O switching 58

IBM OS/2 LAN servers 72

ICC color profiles 249

identification page, device 286

Illustrator, Adobe 249

image formation system

operations 104

troubleshooting 243

images

aligning on page 114

defects, troubleshooting 253

definition 80

drum life 80

imaging drum

connector diagram 315

defects 265

installing 57

kits, status report 290

laser exposure 106, 120

life span 80

locating 84

primary charge 105

protecting 139

replacing 88

shipping 54

InDesign, Adobe 250

Information Menu 273

InfraRed Receiver, Fast (FIR) 68

initializing NVRAM 307

inkjet transparencies, avoiding 31

inks, specifications 33

input trays

capacity 29

locating 25

margins, setting 299

settings 274

supported media 29

installing

imaging drum 57

memory 98

software 59

toner cartridges, older versions 51

interfaces

EIO 67

parallel 58

settings 280

standard 17

troubleshooting 268