HP 1320 Service Manual - Page 7

ENWW Electrostatic discharge ...80 User-replaceable parts ...80 Required tools ...80 Before performing service ...81 Pre-service procedures ...81 Parts removal order ...81 Covers...82 Left-side cover...82 Right-side cover...84 Back cover...86 Duplexer tray...89 Top cover...90 Control panel...93 Formatter...95 Laser/scanner...96 Memory-tag-reader assembly 97 Duplex-drive PCA...99 Fuser...101 Fan...101 Duplex-drive gears/face-down gears 103 Duplex solenoid (SL3) (HP LaserJet 1320 Series printers only 106 Fuser...107 Interlock assembly...117 ECU...119 Main motor...127 Pickup and feed assemblies 129 Transfer roller...129 Registration assembly...130 Main gear assembly/tray 2 pickup solenoid 131 Print-cartridge door...135 Wireless communications card 137 7 Troubleshooting Chapter contents...139 Basic troubleshooting...141 Paper-handling problems ...144 Paper jam ...144 Print is skewed (crooked 144 More than one sheet of media feeds through the printer at one time 144 Printer does not pull media from the media input tray 145 Printer curled the media 145 Printed media does not exit to the correct path 145 Print job is extremely slow 145 Paper-path troubleshooting...146 Solving print paper-feed problems 146 Printed page is different than what appeared on screen 148 Garbled, incorrect, or incomplete text 148 Missing graphics or text, or blank pages 148 Page format is different than on another printer 149 Graphics quality ...149 Status light patterns ...150 Fatal error secondary messages 156 Accessory error secondary messages 159 Troubleshooting postscript (PS) errors 160 Image troubleshooting...161 v