HP LaserJet 9050 Printer series - Manual (Page 129)

ENWW Resolving control-panel messages 127
69.x ERROR
For help press
alternates with
To continue turn off
then on
A temporary printing error occurred.
Turn the printer off, reseat the duplex printing accessory, and then turn the
printer on.
If this message persists, remove the duplexer and resume single-sided printing.
If this message continues to persist, contact an HP-authorized service or
support provider. (See the HP support flyer or go
to www.hp.com/support/
lj9050_lj9040 .
79.xxxx ERROR
To continue turn off
then on A critical hardware error occurred.
Turn the printer off, and then turn the printer on.
If the message persists, remove the duplexer and resume single-sided printing.
Contact an HP-authorized service or support provider. (See the HP support
flyer or go
to www.hp.com/support/lj9050_lj9040 .
8x.yyyy
EIO ERROR
The EIO accessory card in slot x has encountered a critical error as specified
by yyyy .
8X.YYYY EMBEDDED
JETDIRECT ERROR
The embedded HP Jetdirect print server has encountered a critical error as
specified by
YYYY .
Message Explanation or recommended action