Secondary service menu ................................................................................................. 251 To gain access to the secondary service menu .............................................. 251 To print a list of all the fax data-store parameters ........................................... 251 Developer’s menu ............................................................................................................ 252 To gain access to the developer’s menu ......................................................... 253 To adjust fax data-store parameters ...............................................................
253 To scroll quickly to a particular data-store parameter ..................................... 253 Changing the country/region code parameters ................................................................ 254 To change the country/region from one location to another ............................ 254 To set the language and location if none is set ............................................... 254 Soft reset ......................................................................................................................... 255 Performing a soft reset ....................................................................................
255 Super NVRAM init ............................................................................................................ 255 To perform a super NVRAM init ...................................................................... 255 NVRAM init ..................................................................................................................... 256 To perform an NVRAM init .............................................................................. 256 System settings for localized products ............................................................................
257 Printer job language (PJL) software commands .............................................................. 258 Troubleshooting tools ....................................................................................................................... 259 Printing a configuration report, demonstration page, or menu structure .......................... 259 Printing all fax reports at once (HP LaserJet 3050/3055 all-in-one) ................................ 259 T.30 protocol trace (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) 260 To print a T.30 protocol trace report ................................................................
260 Fax error-correction mode (ECM) (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) ........................................... 260 V.34 fax standard ............................................................................................ 261 Fax receive and fax send codes ..................................................................... 261 Translating the fax trace report (HP LaserJet 3050 all-in-one and HP LaserJet 3055 all-in-one only) ................................................................... 270 Repetitive image defect ruler ..........................................................................................
278 Firmware updates and recovery ....................................................................................................... 279 7 Parts and diagrams Ordering parts and supplies ............................................................................................................. 282 Parts that wear ................................................................................................................ 282 Parts ................................................................................................................................ 282 World-wide customer support ..........................................................................................
282 Accessories ...................................................................................................................................... 283 Documentation ................................................................................................................. 284 Common hardware ......................................................................................................... 285 How to use the parts lists and diagrams .......................................................................... 285 Replacing the printer engine assembly ............................................................................
285 Diagrams .......................................................................................................................................... 288 Component locations, HP LaserJet 3050/3052/3055 all-in-one printer (product base) ................................................................................................................................ 288 Main wiring ...................................................................................................................... 291 Formatter PCA and LIU connectors .................................................................................
295 HP LaserJet 3050 all-in-one scanner assembly ............................................................................... 298 ADF components, HP LaserJet 3050 all-in-one .............................................................. 300 Guide assembly, HP LaserJet 3050 all-in-one ................................................................ 304 ENWW ix