Network connectivity problems
..........................................................................................................
615
Troubleshooting network printing problems
......................................................................
615
Loopback test
....................................................................................................................
616
Ping test
............................................................................................................................
616
Functional checks
..............................................................................................................................
617
Engine test
........................................................................................................................
617
Formatter test
....................................................................................................................
617
MFP resets
........................................................................................................................................
619
Cold reset
..........................................................................................................................
619
NVRAM initialization
.........................................................................................................
619
Tools for troubleshooting
...................................................................................................................
621
Individual component diagnostics
.....................................................................................
622
LED diagnostics
...............................................................................................
622
Engine diagnostics
...........................................................................................
623
Diagnostics mode
............................................................................
623
Diagnostics that put the engine into the special diagnostics
mode
................................................................................................
623
Diagnostic tests
...............................................................................
624
Paper path sensor test
.....................................................................................
625
Manual sensor test
...........................................................................................
626
Scanner tests
...................................................................................................
628
Component tests
..............................................................................................
628
Service ID
.........................................................................................................................
631
Converting the service ID to an actual date
.....................................................
631
Troubleshooting the embedded HP Jetdirect print server
................................................
632
Firmware-stack trace
........................................................................................................
632
Diagrams for troubleshooting
............................................................................................................
633
DC controller connections
.................................................................................................
633
Scanner controller PCB connections
................................................................................
636
Locations of major components
........................................................................................
637
Sensors and switches
......................................................................................
639
Sensors and switches
.....................................................................
639
Motors, fans, and solenoids
.............................................................................
641
Motors and solenoids
......................................................................
642
Fans
.................................................................................................
644
PCBs
...............................................................................................
645
Scanner and ADF components
........................................................................
646
ADF and scanner sensors
...............................................................
646
ADF pickup assembly sensors
........................................................
647
ADF motors, fans, and solenoids
....................................................
647
2 X 500-sheet feeder
........................................................................................
649
IPTU
.................................................................................................................
650
General timing chart
.........................................................................................................
651
General circuit diagrams
...................................................................................................
652
Upgrade the firmware
........................................................................................................................
659
Determine the current firmware version
...........................................................................
659
Download new firmware from the HP Web site
................................................................
659
Transfer the new firmware to the MFP
.............................................................................
659
Use FTP to upload the firmware through a browser
........................................
659
Use FTP to upgrade the firmware on a network connection
...........................
660
xvi
ENWW