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