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HP Color Laserjet Printer 3550 manuals

Owner’s manuals and user’s guides for Laser/LED printers HP Color Laserjet Printer 3550.
We providing 1 pdf manuals HP Color Laserjet Printer 3550 for download free by document types: User Manual


Hp Color Laserjet Printer 3550 User Manual (598 pages)


Brand: Hp | Category: Laser/LED printers | Size: 16.51 MB |

 

Table of contents

3500/3550 and 3700

1

Service Manual

3

Conventions

5

Table of contents

7

2 Service approach

8

4 Printer maintenance

9

5 Theory of operation

9

6 Removal and replacement

10

7 Troubleshooting

12

8 Parts and diagrams

14

List of tables

15

List of figures

19

Printer description

25

Printer configurations

27

Printer features

30

ENWW Printer features 7

31

Printer assemblies

33

Figure 1-8

34

Site requirements

35

Electrical specifications

36

Environmental specifications

37

Printer specifications

39

Print media specifications

40

Warranty Statement

44

Identification

46

Selecting paper

48

Printing on special media

50

Envelopes

51

Heavy paper

52

HP LaserJet Tough paper

52

Recycled paper

53

Media weight

53

Protecting the environment

55

HP LaserJet printing supplies

56

Material restrictions

56

Extended warranty

57

For more information

57

Declaration of Conformities

58

Safety statements

61

Laser statement for Finland

62

FCC Regulations

63

Service approach

65

Search approach

66

Parts and supplies

67

HP service agreements

69

Other areas

69

HP maintenance agreements

70

Chapter contents

71

Checking the package contents

72

Unpacking the printer

74

Loading paper into Tray 2

83

Connecting power

86

Testing the printer operation

88

Using PowerSave Time

89

USB configuration

90

1 B-connector

91

2 Parallel port

91

Network configuration

92

HP Jetdirect print servers

93

NetWare networks

94

AppleTalk networks

94

UNIX/Linux networks

94

Printer software

95

Software for networks

96

Utilities

97

ENWW Printer software 75

99

Locking the control panel

100

Enabling memory

107

To check DIMM installation

108

LaserJet 3700 series printer

109

Printer maintenance

115

Cleaning spilled toner

116

Cleaning mode

117

Managing supplies

118

Locating supplies and parts

120

Replacing supply items

121

Replacing the transfer unit

123

To replace the fuser

128

To replace the pickup roller

132

To reset the fuser count

135

Theory of operation

137

Basic operation

138

ENWW Basic operation 115

139

Power-on sequences

140

Figure 5-3

142

Timing diagram

142

Engine control system

143

Figure 5-5

144

DC controller circuit

144

Block functions

145

Table 5-2. Motor Functions

146

Figure 5-6

147

Motor locations

147

Fuser control circuit

151

Video interface control

159

Laser/scanner system

163

Laser control

164

Standby L L Laser control OFF

165

Laser emission control

166

Image mask control

167

Scanner motor control

168

Speed control

169

Phase control

169

Failure detection

169

Image formation system

170

Print process

171

Development block

175

Transfer block

176

Fuser block

178

Cleaning block

179

Developing section

180

Cartridge cleaning control

187

Transfer section

188

Figure 5-44

190

ITB cleaning control

191

Waste toner full detection

191

Transfer (ITB) unit detection

192

Transfer unit life detection

193

ITB self-aligning mechanism

194

Color misregistration control

198

Image stabilization control

201

Environmental change control

202

Image density control (D-max)

203

Image density detection

204

Pickup/feed system

206

Pickup/feed unit

208

Feed speed control

210

Skew control mechanism

211

Fuser/delivery unit

213

PS8 Face-down delivery sensor

215

M1 Feed motor

215

M2 Delivery motor

215

Reverse control

217

Duplex feed mode

218

Jam detection

219

Paper feeder

221

Pickup/delivery sequence

222

Paper jam detection

223

Removal and replacement

225

Introduction

228

Types of screws

229

Supplies

231

Front door removal

233

Left cover removal

234

Left front cover removal

235

Reinstallation tip

236

Right cover removal

237

Top cover removal

238

Upper rear door removal

238

Rear cover removal

239

Tray 1 (multipurpose) removal

240

Main Assemblies

241

Transfer unit removal

242

Print cartridge removal

243

Fuser removal

244

Image drive assembly removal

247

Pick-up/feed assembly removal

249

Figure 6-29

252

Main assembly parts

260

Tray 1 pick-up roller removal

261

Tray 1 separation pad removal

261

Tray 2 pick-up roller removal

262

Tray 2 separation pad removal

262

Fuser sleeve unit removal

263

Pressure roller removal

263

Thermoswitch removal

263

Feed guide unit removal

264

Swing guide removal, right

266

Swing guide removal, left

269

Switches

274

Power switch (SW3001) removal

275

Figure 6-68

276

Sensor locations

276

Media sensor (PS5) removal

279

Solenoids and Clutches

287

Motor and fans

293

Delivery motor (M2) removal

295

Drum motor (M3) removal

295

Developing motor (M4) removal

297

Exhaust fan (FAN1) removal

301

Circuit Boards

302

Formatter PCB removal

303

Memory controller PCB removal

310

Control Panel PCB removal

311

Miscellaneous parts

312

Tray 2 (cassette)

315

1 Right cover

320

2 Left cover

320

3 Front cover

320

1 500-Sheet paper feeder PCB

324

Troubleshooting

327

Troubleshooting process

331

Troubleshooting flowchart

332

Troubleshooting power-on

334

Printer error troubleshooting

336

Numerical printer messages

351

Paper path troubleshooting

380

Paper path jam areas

381

Paper jam error message

381

Multiple pages are fed

384

Table 7-9. Transfer/feed area

386

Front door area jams (area 4)

386

2. Open the upper rear door

396

3. Remove any paper

396

4. Close the rear door

396

Paper jam recovery feature

401

Avoiding paper jams

401

Paper path checklist

403

Persistent jams

404

Overhead transparency defect

405

Calibrating the printer

407

Using Color

408

Press ink sets

409

Common ink standard in the

409

Managing color

410

Matching colors

412

Adjusting color balance

413

Image defects

414

Light image

415

Light color

416

Dark image

416

Dark color

417

Completely blank image

417

All black or solid color

417

Dots in vertical lines

418

Dirt on back of paper

418

Dirt on front of paper

418

Vertical lines

419

White vertical lines

419

Horizontal line

420

White horizontal line

420

Color missing

421

Blank spots

421

Poor fusing

421

Image distortion

422

Color misregistration

422

Smearing

423

Misplaced image

423

Reversed color

424

Snail tracks

424

Interface troubleshooting

427

Parallel DOS commands

428

@PJL [Enter]

428

@PJL COMMENT

429

@PJL INFO CONFIG

429

@PJL INFO ID

429

@PJL INFO USTATUS

429

@PJL INFO PAGECOUNT

429

@PJL JOB

430

@PJL EOJ

430

@PJL ECHO

430

@PJL USTATUS JOB=ON/OFF

430

@PJL USTATUSOFF

430

Printing a menu map

431

Information menu

431

Paper handling menu

432

Configure device menu

433

Print quality menu

435

System setup menu

438

I/O menu

442

Resets menu

443

Diagnostics menu

443

Service menu

444

Tools for troubleshooting

446

Information tab

447

Settings tab

447

HP Toolbox

448

To view HP Toolbox

449

HP toolbox sections

449

Documentation tab

450

HP toolbox links

451

Printer configuration page

452

Supplies status page

453

Usage page (HP 3700 only)

454

Event log

455

Figure 7-11

456

Diagnostics

457

Engine diagnostics

458

Diagnostics tests

459

Printer display menu

460

Diagnostics test menu

460

Paper Path Test

463

Print/Stop Test

466

Test pages

469

Engine resets

470

Calibration bypass

471

Calibrate Now

471

Service ID

473

Restoring the Service ID

473

Cold reset paper

473

Diagrams

474

Main parts

475

Figure 7-20

477

Location of sensors

477

ENWW Diagrams 453

477

Solenoids and clutches

478

Motors and fans

479

Figure 7-23

480

PCB locations

480

Figure 7-24

481

Figure 7-25

481

ENWW Diagrams 457

481

Connector locations

482

Figure 7-27

483

ENWW Diagrams 459

483

Figure 7-28

484

Figure 7-29

485

ENWW Diagrams 461

485

Figure 7-30

486

General circuit diagram

487

Figure 7-32

488

Parts and diagrams

489

Ordering parts

491

ENWW Ordering parts 469

493

ENWW Ordering parts 471

495

Illustrations and parts lists

502

Figure 8-2

503

Main parts (2 of 3)

503

Figure 8-3

504

Figure 8-4

504

PCB locations (1 of 2)

504

Table 8-3. PCB locations

505

Figure 8-5

506

Figure 8-6

508

External covers and panels

508

Figure 8-7

510

Front door assembly

510

Figure 8-8

512

Internal components (1 of 4)

512

Figure 8-9

514

Internal components (2 of 4)

514

Figure 8-10

518

Internal components (3 of 4)

518

Figure 8-11

520

Internal components (4 of 4)

520

Figure 8-12

522

Center frame assembly

522

Figure 8-13

524

Figure 8-14

528

Main Left Side Plate Assembly

528

Figure 8-15

530

Figure 8-16

532

Figure 8-17

534

Image Drive Assembly

534

Figure 8-18

536

2 RING, E XD9-0135-000CN 1

537

Figure 8-19

538

Table 8-16. Tray 2 (cassette)

539

Figure 8-20

540

Figure 8-21

542

Figure 8-22

544

Figure 8-23

546

Face-down delivery assembly

546

Figure 8-24

548

Transfer Unit

548

Table 8-20. Transfer unit

549

Figure 8-25

550

Right Swing Frame Assembly

550

Figure 8-26

552

Left Swing Frame Assembly

552

Figure 8-27

554

Table 8-23. Fuser assembly

555

Figure 8-28

556

Figure 8-29

558

Figure 8-30

560

1 PLATE, END RB2-6469-000CN 1

561

Alphabetical parts list

562

Numerical parts list

575

ENWW Numerical parts list 553

577

ENWW Numerical parts list 555

579

ENWW Numerical parts list 557

581

ENWW Numerical parts list 559

583

Q5990-90939

598




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