DC power distribution ....................................................................... 46 Overcurrent/overvoltage ................................................................... 46 High-voltage power distribution ........................................................ 47 Image-formation system .................................................................................................... 48 The seven image-formation processes ............................................................ 48 Print cartridge ....................................................................................................................
49 Product base paper-feed system ....................................................................................... 49 Jam detection in the product ............................................................................................. 51 Conditions of jam detection ............................................................................... 51 HP LaserJet M1319f components ...................................................................................................... 52 Basic operation ..................................................................................................................
52 ADF pickup-and-feed system ............................................................................ 54 Optical scanning system ................................................................................... 56 Fax functions and operation .............................................................................................................. 58 Computer and network security features ........................................................................... 58 PSTN operation .................................................................................................................
58 Receive faxes when you hear fax tones ............................................................................ 59 Distinctive ring function ...................................................................................................... 59 Fax by using Voice over IP services .................................................................................. 59 The fax subsystem ............................................................................................................. 60 Fax card in the fax subsystem ...........................................................................................
60 Safety isolation .................................................................................................. 60 Safety-protection circuitry .................................................................................. 60 Data path ........................................................................................................... 61 Hook state ......................................................................................................... 61 Downstream device detection ........................................................................... 61 Hook switch control ...........................................................................................
62 Ring detect ........................................................................................................ 62 Line current control ........................................................................................... 62 Billing- (metering-) tone filters ........................................................................... 62 Fax page storage in flash memory .................................................................................... 62 Stored fax pages ............................................................................................... 62 Advantages of flash memory storage ...............................................................
63 6 Removal and replacement Removal and replacement strategy ................................................................................................... 66 Warnings, cautions, notes, and tips ................................................................................... 66 Electrostatic discharge ....................................................................................................... 66 Required tools ................................................................................................................... 67 Types of screws .................................................................................................................
67 Service approach ............................................................................................................................... 68 Before performing service .................................................................................................. 68 After performing service ..................................................................................................... 69 ENWW v