Main input tray .................................................................................................................... 21
Priority feed slot .................................................................................................................. 21
Specific types of media ....................................................................................................... 21
Setting media types ............................................................................................................................. 22
Set the media type .............................................................................................................. 22
3 Maintenance
Life expectancies of parts that wear .................................................................................................... 24
Cleaning the product ........................................................................................................................... 25
Cleaning the print path ........................................................................................................ 26
Cleaning the print-cartridge area ........................................................................................ 26
Cleaning the pickup roller ................................................................................................... 29
User-replaceable parts ........................................................................................................................ 30
Replacing the pickup roller ................................................................................................. 30
Replacing the separation pad ............................................................................................. 33
Replacing the main input tray (paper-pickup tray assembly) ............................................. 35
Replacing the output-bin extension (delivery-tray assembly) ............................................. 36
4 Operational overview
Basic functions ..................................................................................................................................... 38
Formatter system ................................................................................................................................. 39
Central processing unit ....................................................................................................... 39
RAM .................................................................................................................................... 39
USB interface ...................................................................................................................... 39
Control panel ....................................................................................................................... 39
Draft mode (EconoMode) ................................................................................................... 39
HP Memory Enhancement technology (MEt) ..................................................................... 39
Enhanced I/O ...................................................................................................................... 40
Printer functions ................................................................................................................................... 41
Engine control system (engine control unit and power assembly) ..................................... 42
Printer-engine-control system ............................................................................ 42
Printer laser/scanner unit ................................................................................... 43
Power system on the engine power assembly .................................................. 44
Image-formation system ..................................................................................................... 45
The seven image-formation processes .............................................................. 46
Print cartridge ...................................................................................................................... 47
Printer paper-feed system .................................................................................................. 47
Jam detection ...................................................................................................................... 49
Conditions of jam detection ................................................................................ 49
Solenoid, sensors, switches, and motor ............................................................................. 50
Basic sequence of operation (formatter-to-printer) ............................................................. 51
5 Removal and replacement
Removal and replacement strategy ..................................................................................................... 54
Required tools ..................................................................................................................... 54
Before performing service ................................................................................................... 54
Print cartridge ...................................................................................................................... 55
Parts removal order ............................................................................................................ 56
User-replaceable parts ........................................................................................................................ 57
iv ENWW
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