HP 4650 Service Manual - Page 10

Cassette paper-size-detection switch 213 Internal components (rear 214 Formatter...214 Low-voltage power supply 215 Power-supply fan (HP Color LaserJet 4610n and 4650 models 217 Formatter case 218 Laser/scanner components 220 Remove the laser/scanner cover plate 220 Remove the laser/scanner retaining bars 222 To remove the laser/scanner assemblies 224 Internal components (right side 225 High-voltage power supply PCA 225 Toner level detection PCA 227 High-voltage contact blocks 228 Door switch...229 Internal components (top 230 Fuser power supply PCA 230 Fuser drive unit 232 Fuser inlet paper sensor 234 Fuser delivery sensor 235 Output-bin-full sensor 236 Cartridge fan...237 Formatter fan...238 Optional 500-sheet paper feeder (HP Color LaserJet 4600 and 4650 models only 239 500-sheet paper feeder top cover plate 239 500-sheet paper feeder drive unit 240 500-sheet paper-feeder pickup rollers 242 500-sheet paper-feeder PCA 242 Optional 2 x 500-sheet paper feeder (tray 3/tray 4) (HP Color LaserJet 4650 only 243 2 x 500-sheet paper feeder front cover 243 2 x 500-sheet paper feeder rear cover 244 2 x 500-sheet paper feeder left cover 245 2 x 500-sheet paper feeder right cover 246 2 x 500-sheet paper feeder upper-cassette pickup assembly 247 2 x 500-sheet paper-feeder drive assembly 248 2 x 500-sheet paper-feeder feed sensor 249 2 x 500-sheet paper feeder upper- or lower-cassette paper sensor 250 2 x 500-sheet paper feeder upper- or lower-cassette paper-detection switch 252 2 x 500-sheet paper-feeder driver PCA 253 2 x 500-sheet paper feeder pickup rollers 254 7 Troubleshooting Introduction...2. 56 Troubleshooting process...258 Pre-troubleshooting checklist 259 Troubleshooting basics ...261 Troubleshooting power-on 262 Printer-error troubleshooting ...263 Status messages ...263 Warning messages ...263 ENWW ix