HP — HP Color LaserJet 3000/3600/3800/CP3505 Service Manual (EN)

Serial number .................................................................................................................. 226 Diagnostics menu ............................................................................................................................. 227 Diagnostics ....................................................................................................................................... 228 LED diagnostics ............................................................................................................... 228 Diagnostics mode ............................................................................................................

228 Diagnostics that put the engine into the special diagnostics mode ................. 229 Diagnostic tests ............................................................................................................... 229 Individual diagnostic tests ................................................................................................ 230 Print the event log page .................................................................................. 230 View the event log on the control-panel display .............................................. 230 Print the print-quality (PQ) troubleshooting pages ..........................................

231 Disable cartridge check (special mode test) ................................................... 231 Paper-path sensor test .................................................................................... 231 Paper-path test ................................................................................................ 231 Manual sensor test (special mode test) .......................................................... 232 Component test (special mode test) ............................................................... 233 Print/Stop test ..................................................................................................

235 Test pages ........................................................................................................................................ 236 Engine test page .............................................................................................................. 236 Formatter test .................................................................................................................. 236 Half-self test ..................................................................................................................... 236 Drum-rotation test ............................................................................................................

237 Engine resets ................................................................................................................................... 238 Engine resets ................................................................................................................... 238 Cold reset ........................................................................................................ 238 NVRAM initialization ........................................................................................ 238 Hard-disk initialization .....................................................................................

239 Service ID ......................................................................................................................................... 240 Converting the Service ID to an actual date .................................................................... 240 Restoring the Service ID .................................................................................................. 240 Troubleshooting diagrams ............................................................................................... 241 Connector locations ........................................................................................

241 Major assemblies ............................................................................................ 243 DC controller connectors ................................................................................. 248 Timing diagram ............................................................................................... 249 Circuit diagrams .............................................................................................. 251 7 Parts and diagrams Ordering parts and supplies .............................................................................................................

254 Parts ................................................................................................................................ 254 How to use the parts lists and diagrams .......................................................................... 254 Types of screws ............................................................................................................... 254 Related documentation and software .............................................................................. 255 viii ENWW