IBM 6400 Setup Manual page 203

The print tests are used to check the print quality and operation of your
printer. The procedure to run these tests is shown on page . The self–tests
include the following:
Printer Demonstration
Demonstrates some of the functions and features available on the printer.
Print Error Log
Prints a log of errors that have occurred in the printer.
Ripple Print
A "sliding" alphanumeric pattern used to identify missing or malformed
characters, improper vertical alignment, or vertical compression.
All E's
A pattern of all uppercase E's that identifies missing characters, misplaced
dots, smeared characters, improper phasing problems, or light/dark character
variations.
All H's
A pattern of all uppercase H's used to detect missing characters, misplaced
dots, smeared characters, or improper phasing.
All E's + FF
A pattern of all E's repeated for ten lines and followed by a form feed to the
next page top–of–form, used to identify paper motion or feeding problems,
such as paper path obstruction or improper forms.
Underlines
An underline pattern useful for identifying hammer bank misalignment.
Ethernet Test Page
Prints an ethernet configuration page. If the ethernet interface is not properly
installed, this page will not print.
NOTE: This page contains important system and ethernet information and
should be maintained with your system configuration printout.
Your IBM Customer Service Representative will typically run these
tests.
Print Format Menu
203