Lifter-drive assembly (optional paper feeder)

230

Remove the lifter-drive assembly (optional paper feeder)

230

Pickup motor assembly (optional paper feeder)

231

Remove the pickup motor (optional paper feeder) assembly

231

Controller PCA (optional paper feeder)

232

Remove the controller PCA (optional paper feeder)

232

3 Solve problems

 

Solve problems checklist

234

Menu map

236

Troubleshooting process

237

Determine the problem source

237

Pre-troubleshooting checklist

237

Troubleshooting flowchart

239

Power subsystem

240

Power-on checks

240

Power-on troubleshooting overview

240

Tools for troubleshooting

242

Individual component diagnostics

242

LED diagnostics

242

Understand lights on the formatter

242

Engine diagnostics

243

Defeating interlocks

243

Disable cartridge check

244

Engine-test button

244

Paper-path test

245

Manual sensor test (special-mode test)

246

A TOP (top of page) sensor

247

B and C loop sensors

248

D fuser delivery sensor

249

E duplex re-pickup sensor

250

F output bin full sensor

251

I developer alienation

252

J fuser pressure-release sensor

253

K primary transfer-roller-disengagement sensor

254

L media sensor

256

M front-door switch

257

N right-door switch

258

Manual sensor test 2 (special-mode test)

259

O Tray 1 paper present sensor

261

P Tray 2 paper present sensor

262

Q Tray 2 paper surface 1 and 2 sensors

263

R Tray 2 paper size switches

264

x

ENWW

Page 12
Image 12
HP Enterprise CC490A manual Solve problems