HP激光打印机M14-M31维修手册：故障排除与维护指南

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"惠普m14-m17-m28-m31打印机维修手册" 这份维修手册详细涵盖了惠普 LaserJet Pro 系列的四款激光打印机：M14、M17、M28和M31的维护与修理指南。由HP Development Company, L.P在2018年出版，所有版权受法律保护，未经许可禁止复制、改编或翻译。然而，手册中的信息可能随时更新，无须预先通知。手册遵循一定的标注规则，以便用户更好地理解和操作： 1. **TIP（提示）**：提供有用的操作技巧或快捷方式，帮助用户更高效地完成任务。 2. **NOTE（注解）**：解释关键概念或详细说明如何执行某项任务，为用户提供指导。 3. **Reinstallation tip（重新安装提示）**：在进行部件更换或系统恢复时，给出的有益提示、快捷方法或注意事项。 4. **IMPORTANT（重要）**：这些信息旨在帮助用户预防可能出现的打印机错误状况，确保设备正常运行。 5. **CAUTION（警告）**：列出用户必须遵循的步骤，以避免数据丢失或打印机损坏，对设备的使用有重要提醒作用。 6. **WARNING!（警示）**：强调用户必须遵守的规程，以防个人伤害或灾难性事故的发生，这部分内容尤为关键。手册中将详细阐述各个型号打印机的结构、工作原理、常见故障诊断、部件识别、故障排除流程、维修工具的使用以及安全操作步骤。用户可以依据手册进行故障自查，学习正确的拆装和保养技巧，从而延长打印机的使用寿命并减少不必要的维修成本。此外，对于惠普的保修政策，手册明确指出，产品和服务的唯一保修条款是随附的明示保修声明。手册内容不应被视为额外的保修承诺。如果出现技术或编辑错误，HP不承担责任，但会持续更新以提供最准确的信息。总体而言，这部《惠普 LaserJet Pro M14-M17 和 LaserJet Pro MFP M28-M31 维修手册》是惠普用户和专业维修人员不可或缺的参考资料，它提供了全面的故障解决策略和安全操作指南，有助于提升打印机维护的专业水平。

Figure 1-197 Remove the lower plate .............................................................................................................................................. 181

Figure 1-198 Remove the three screws ........................................................................................................................................... 182

Figure 1-199 Remove the lower cover ............................................................................................................................................. 182

Figure 1-200 Fit two ribs on the printer into the grooves (lower cover install) .......................................................................... 183

Figure 1-201 Remove the formatter ................................................................................................................................................. 184

Figure 1-202 Pressure release lever ................................................................................................................................................. 184

Figure 1-203 Rotate the pressure release levers ........................................................................................................................... 185

Figure 1-204 Remove the inner cover .............................................................................................................................................. 185

Figure 1-205 Remove the cable guide .............................................................................................................................................. 186

Figure 1-206 Remove the plate ......................................................................................................................................................... 186

Figure 1-207 Disconnect two connectors ........................................................................................................................................ 187

Figure 1-208 Release the FFC and spring ........................................................................................................................................ 187

Figure 1-209 Remove two screws ..................................................................................................................................................... 188

Figure 1-210 Right side gears and springs ...................................................................................................................................... 188

Figure 1-211 Remove the plate ......................................................................................................................................................... 189

Figure 1-212 Remove the fuser ......................................................................................................................................................... 189

Figure 1-213 Reinstall the spring (upper) ........................................................................................................................................ 190

Figure 1-214 Reinstall the spring (lowerr) ....................................................................................................................................... 190

Figure 1-215 Remove the formatter cover (MFP M28-M31) ........................................................................................................ 193

Figure 1-216 Disconnect two FFCs .................................................................................................................................................... 193

Figure 1-217 Special disassembly instructions ............................................................................................................................... 194

Figure 1-218 Remove the link arm .................................................................................................................................................... 195

Figure 1-219 Remove the link arm .................................................................................................................................................... 195

Figure 1-220 Remove the link arm .................................................................................................................................................... 196

Figure 1-221 Remove the link arm .................................................................................................................................................... 196

Figure 1-222 Remove the image scanner ........................................................................................................................................ 197

Figure 1-223 Remove the cartridge door ......................................................................................................................................... 197

Figure 1-224 Remove the top cover ................................................................................................................................................. 198

Figure 1-225 Install the pad ............................................................................................................................................................... 199

Figure 1-226 Remove the lower plate .............................................................................................................................................. 199

Figure 1-227 Remove three screws .................................................................................................................................................. 200

Figure 1-228 Remove the lower cover ............................................................................................................................................. 200

Figure 1-229 Pressure release lever ................................................................................................................................................. 201

Figure 1-230 Rotate the pressure release levers ........................................................................................................................... 201

Figure 1-231 Remove the plate ......................................................................................................................................................... 202

Figure 1-232 Disconnect two connectors ........................................................................................................................................ 202

Figure 1-233 Release the FFC and spring ........................................................................................................................................ 203

Figure 1-234 Remove two screws ..................................................................................................................................................... 203

Figure 1-235 Right side gears and springs ...................................................................................................................................... 204

Figure 1-236 Remove the plate ......................................................................................................................................................... 204

Figure 1-237 Remove the fuser ......................................................................................................................................................... 205

xvi ENWW

Figure 1-238 Reinstall the spring (lowerr) ....................................................................................................................................... 205

Figure 1-239 Remove two screw ....................................................................................................................................................... 208

Figure 1-240 Special disassembly instructions ............................................................................................................................... 209

Figure 1-241 Remove the link arm .................................................................................................................................................... 210

Figure 1-242 Remove the link arm .................................................................................................................................................... 210

Figure 1-243 Remove the link arm .................................................................................................................................................... 211

Figure 1-244 Remove the cartridge door ......................................................................................................................................... 211

Figure 1-245 Install the link arms on the replacement door ........................................................................................................ 212

Figure 1-246 Install the link arms on the replacement door ........................................................................................................ 212

Figure 1-247 Remove the formatter cover (M14-M17) ................................................................................................................. 213

Figure 1-248 Remove the lower plate .............................................................................................................................................. 213

Figure 1-249 Remove the three screws ........................................................................................................................................... 214

Figure 1-250 Remove the lower cover ............................................................................................................................................. 214

Figure 1-251 Fit two ribs on the printer into the grooves (lower cover install) .......................................................................... 215

Figure 1-252 Remove the formatter ................................................................................................................................................. 216

Figure 1-253 Pressure release lever ................................................................................................................................................. 216

Figure 1-254 Rotate the pressure release levers ........................................................................................................................... 217

Figure 1-255 Remove the inner cover .............................................................................................................................................. 217

Figure 1-256 Remove the cable guide .............................................................................................................................................. 218

Figure 1-257 Remove the plate ......................................................................................................................................................... 218

Figure 1-258 Disconnect two connectors ........................................................................................................................................ 219

Figure 1-259 Release the FFC and spring ........................................................................................................................................ 219

Figure 1-260 Remove two screws ..................................................................................................................................................... 220

Figure 1-261 Right side gears and springs ...................................................................................................................................... 220

Figure 1-262 Remove the plate ......................................................................................................................................................... 221

Figure 1-263 Remove the fuser ......................................................................................................................................................... 221

Figure 1-264 Reinstall the spring (upper) ........................................................................................................................................ 222

Figure 1-265 Reinstall the spring (lowerr) ....................................................................................................................................... 222

Figure 1-266 Pressure release lever ................................................................................................................................................. 223

Figure 1-267 Check the pressure release levers ............................................................................................................................ 223

Figure 1-268 Release the wire harnesses ........................................................................................................................................ 224

Figure 1-269 Remove the fuser cover .............................................................................................................................................. 224

Figure 1-270 Remove the pressure plate and lever ....................................................................................................................... 225

Figure 1-271 Remove the pressure plate and lever ....................................................................................................................... 225

Figure 1-272 Remove the gears ........................................................................................................................................................ 226

Figure 1-273 Release the wire harness ............................................................................................................................................ 226

Figure 1-274 Remove the fuser lm assembly ............................................................................................................................... 227

Figure 1-275 Remove the formatter cover (MFP M28-M31) ........................................................................................................ 230

Figure 1-276 Disconnect two FFCs .................................................................................................................................................... 230

Figure 1-277 Special disassembly instructions ............................................................................................................................... 231

Figure 1-278 Remove the link arm .................................................................................................................................................... 232

ENWW xvii

Figure 1-279 Remove the link arm .................................................................................................................................................... 232

Figure 1-280 Remove the link arm .................................................................................................................................................... 233

Figure 1-281 Remove the link arm .................................................................................................................................................... 233

Figure 1-282 Remove the image scanner ........................................................................................................................................ 234

Figure 1-283 Remove the cartridge door ......................................................................................................................................... 234

Figure 1-284 Remove the top cover ................................................................................................................................................. 235

Figure 1-285 Install the pad ............................................................................................................................................................... 236

Figure 1-286 Remove the lower plate .............................................................................................................................................. 236

Figure 1-287 Remove three screws .................................................................................................................................................. 237

Figure 1-288 Remove the lower cover ............................................................................................................................................. 237

Figure 1-289 Pressure release lever ................................................................................................................................................. 238

Figure 1-290 Rotate the pressure release levers ........................................................................................................................... 238

Figure 1-291 Remove the plate ......................................................................................................................................................... 239

Figure 1-292 Disconnect two connectors ........................................................................................................................................ 239

Figure 1-293 Release the FFC and spring ........................................................................................................................................ 240

Figure 1-294 Remove two screws ..................................................................................................................................................... 240

Figure 1-295 Right side gears and springs ...................................................................................................................................... 241

Figure 1-296 Remove the plate ......................................................................................................................................................... 241

Figure 1-297 Remove the fuser ......................................................................................................................................................... 242

Figure 1-298 Reinstall the spring (lowerr) ....................................................................................................................................... 242

Figure 1-299 Pressure release lever ................................................................................................................................................. 243

Figure 1-300 Check the pressure release levers ............................................................................................................................ 244

Figure 1-301 Release the wire harnesses ........................................................................................................................................ 244

Figure 1-302 Remove the fuser cover .............................................................................................................................................. 245

Figure 1-303 Remove the pressure plate and lever ....................................................................................................................... 245

Figure 1-304 Remove the pressure plate and lever ....................................................................................................................... 246

Figure 1-305 Remove the gears ........................................................................................................................................................ 246

Figure 1-306 Release the wire harness ............................................................................................................................................ 247

Figure 1-307 Remove the fuser lm assembly ............................................................................................................................... 247

Figure 1-308 Remove two screw ....................................................................................................................................................... 250

Figure 1-309 Special disassembly instructions ............................................................................................................................... 251

Figure 1-310 Remove the link arm .................................................................................................................................................... 252

Figure 1-311 Remove the link arm .................................................................................................................................................... 252

Figure 1-312 Remove the link arm .................................................................................................................................................... 253

Figure 1-313 Remove the cartridge door ......................................................................................................................................... 253

Figure 1-314 Install the link arms on the replacement door ........................................................................................................ 254

Figure 1-315 Install the link arms on the replacement door ........................................................................................................ 254

Figure 1-316 Remove the formatter cover (M14-M17) ................................................................................................................. 255

Figure 1-317 Remove the lower plate .............................................................................................................................................. 255

Figure 1-318 Remove the three screws ........................................................................................................................................... 256

Figure 1-319 Remove the lower cover ............................................................................................................................................. 256

xviii ENWW

Figure 1-320 Fit two ribs on the printer into the grooves (lower cover install) .......................................................................... 257

Figure 1-321 Remove the motor shield plate ................................................................................................................................. 257

Figure 1-322 Disconnect connectors and FFCs ............................................................................................................................... 258

Figure 1-323 Release the lever and disconnect the connector .................................................................................................... 258

Figure 1-324 Remove the engine controller assembly .................................................................................................................. 259

Figure 1-325 Check the spring ........................................................................................................................................................... 260

Figure 1-326 Remove the formatter cover (MFP M28-M31) ........................................................................................................ 263

Figure 1-327 Remove the formatter (MFP M28-M31) ................................................................................................................... 264

Figure 1-328 Disconnect two FFCs .................................................................................................................................................... 264

Figure 1-329 Special disassembly instructions ............................................................................................................................... 265

Figure 1-330 Remove the link arm .................................................................................................................................................... 266

Figure 1-331 Remove the link arm .................................................................................................................................................... 266

Figure 1-332 Remove the link arm .................................................................................................................................................... 267

Figure 1-333 Remove the link arm .................................................................................................................................................... 267

Figure 1-334 Remove the image scanner ........................................................................................................................................ 268

Figure 1-335 Remove the cartridge door ......................................................................................................................................... 268

Figure 1-336 Remove the top cover ................................................................................................................................................. 269

Figure 1-337 Install the pad ............................................................................................................................................................... 270

Figure 1-338 Remove the lower plate .............................................................................................................................................. 270

Figure 1-339 Remove three screws .................................................................................................................................................. 271

Figure 1-340 Remove the lower cover ............................................................................................................................................. 271

Figure 1-341 Remove the motor shield plate ................................................................................................................................. 272

Figure 1-342 Disconnect connectors and FFCs ............................................................................................................................... 272

Figure 1-343 Release the lever and disconnect the connector .................................................................................................... 273

Figure 1-344 Remove the engine controller assembly .................................................................................................................. 273

Figure 1-345 Check the spring ........................................................................................................................................................... 274

Figure 1-346 Remove two screw ....................................................................................................................................................... 277

Figure 1-347 Special disassembly instructions ............................................................................................................................... 278

Figure 1-348 Remove the link arm .................................................................................................................................................... 279

Figure 1-349 Remove the link arm .................................................................................................................................................... 279

Figure 1-350 Remove the link arm .................................................................................................................................................... 280

Figure 1-351 Remove the cartridge door ......................................................................................................................................... 280

Figure 1-352 Install the link arms on the replacement door ........................................................................................................ 281

Figure 1-353 Install the link arms on the replacement door ........................................................................................................ 281

Figure 1-354 Remove the formatter cover (M14-M17) ................................................................................................................. 282

Figure 1-355 Remove the lower plate .............................................................................................................................................. 282

Figure 1-356 Remove the three screws ........................................................................................................................................... 283

Figure 1-357 Remove the lower cover ............................................................................................................................................. 283

Figure 1-358 Fit two ribs on the printer into the grooves (lower cover install) .......................................................................... 284

Figure 1-359 Remove the formatter cover (MFP M28-M31) ........................................................................................................ 284

Figure 1-360 Disconnect two FFCs .................................................................................................................................................... 285

ENWW xix

Figure 1-361 Special disassembly instructions ............................................................................................................................... 286

Figure 1-362 Remove the link arm .................................................................................................................................................... 287

Figure 1-363 Remove the link arm .................................................................................................................................................... 287

Figure 1-364 Remove the link arm .................................................................................................................................................... 288

Figure 1-365 Remove the link arm .................................................................................................................................................... 288

Figure 1-366 Remove the image scanner ........................................................................................................................................ 289

Figure 1-367 Remove the cartridge door ......................................................................................................................................... 289

Figure 1-368 Remove the top cover ................................................................................................................................................. 290

Figure 1-369 Install the pad ............................................................................................................................................................... 291

Figure 1-370 Remove the lower plate .............................................................................................................................................. 291

Figure 1-371 Remove three screws .................................................................................................................................................. 292

Figure 1-372 Remove the lower cover ............................................................................................................................................. 292

Figure 1-373 Remove the door switch and FFC .............................................................................................................................. 293

Figure 1-374 Remove two screw ....................................................................................................................................................... 296

Figure 1-375 Special disassembly instructions ............................................................................................................................... 297

Figure 1-376 Remove the link arm .................................................................................................................................................... 298

Figure 1-377 Remove the link arm .................................................................................................................................................... 298

Figure 1-378 Remove the link arm .................................................................................................................................................... 299

Figure 1-379 Remove the cartridge door ......................................................................................................................................... 299

Figure 1-380 Install the link arms on the replacement door ........................................................................................................ 300

Figure 1-381 Install the link arms on the replacement door ........................................................................................................ 300

Figure 1-382 Remove the formatter cover (M14-M17) ................................................................................................................. 301

Figure 1-383 Remove the lower plate .............................................................................................................................................. 301

Figure 1-384 Remove the three screws ........................................................................................................................................... 302

Figure 1-385 Remove the lower cover ............................................................................................................................................. 302

Figure 1-386 Fit two ribs on the printer into the grooves (lower cover install) .......................................................................... 303

Figure 1-387 Remove the formatter cover (MFP M28-M31) ........................................................................................................ 303

Figure 1-388 Disconnect two FFCs .................................................................................................................................................... 304

Figure 1-389 Special disassembly instructions ............................................................................................................................... 305

Figure 1-390 Remove the link arm .................................................................................................................................................... 306

Figure 1-391 Remove the link arm .................................................................................................................................................... 306

Figure 1-392 Remove the link arm .................................................................................................................................................... 307

Figure 1-393 Remove the link arm .................................................................................................................................................... 307

Figure 1-394 Remove the image scanner ........................................................................................................................................ 308

Figure 1-395 Remove the cartridge door ......................................................................................................................................... 308

Figure 1-396 Remove the top cover ................................................................................................................................................. 309

Figure 1-397 Install the pad ............................................................................................................................................................... 310

Figure 1-398 Remove the lower plate .............................................................................................................................................. 310

Figure 1-399 Remove three screws .................................................................................................................................................. 311

Figure 1-400 Remove the lower cover ............................................................................................................................................. 311

Figure 1-401 Remove the pickup solenoid ...................................................................................................................................... 312

xx ENWW

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