HP 400 - Manual (Page 81)

5-18 Problem Resolution
Troubleshooting Communication Problems
Printer
connected to
some type of
sharing device?
Prints the DOS
directory?
From DOS, send the following
command to print the DOS directory:
DIR>LPT1:
Disconnect the printer from
the sharing device. Connect
the printer directly to the
host. Retest.
Printer
communicates
without the sharing
device?
Sharing device is probably not the
cause, however, continue testing
without the sharing device.
(Once the communication problem is
resolved, you can try to use the
sharing device again.)
Sharing device
faulty or
imcompatible.
Remove the
sharing device.
Retest.
Start
Yes
No
No
No
Goto A.
The printer and host communicate. The problem
may be related to the software printer driver or
the software settings. Verify the correct printer
driver is selected and the correct printer
settings are selected in the software package.
Yes
Yes