Operator Print Tests - IBM 6400 Maintenance Information Manual
6400 series cabinet and pedestal models, line matrix printers
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Also See for 6400:
- Programmer's reference manual (450 pages) ,
- Maintenance manual (428 pages) ,
- Setup manual (370 pages)
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Chapter
5
Operator Print Tests
Operator Print Tests
A set of print tests is included in the configuration menu structure for use as
diagnostic tools. These are called the "Operator Print Tests" because they are
available to the user. You can use these print tests to check the print quality
and basic operation of the printer.
The Operator Print Tests are summarized below.
NOTE: Under the description of some tests is a list of items that may need to
•
Printer Demonstration Prints a sample page showing every print mode,
font, and pitch available in the printer.
•
Print Error Log Prints the contents of the error log. The error log
automatically records certain unit check conditions in a buffer in NVRAM
that stores up to 50 messages. The most recent message is stored at the
top of the list, the oldest message at the bottom of the list. If more than 50
messages occur before the log is cleared, the oldest messages are
deleted, so that the log never contains more than 50 messages.
•
Ripple Print A "sliding" alphanumeric pattern useful for identifying
missing or malformed characters, improper vertical alignment, or vertical
compression.
Hammer bank cover
Hammer spring
Shuttle frame assembly
•
All E's A pattern of all uppercase letter E's useful for identifying missing
characters, misplaced dots, smeared characters, improper phasing, or
light/dark character variations.
Ribbon
Splined shaft skew adjustment
Hammer bank cover
MPU sensor
Hammer springs
Hammer coils (shuttle frame assembly)
•
All H's A pattern of all uppercase letter H's useful for detecting missing
characters or dots, smeared characters, or improper phasing.
Ribbon
Hammer bank cover
MPU sensor
Hammer springs
Hammer coils (shuttle frame assembly)
•
All E's + FF A pattern of all E's repeated for ten lines and followed by a
form feed to the top of the next page. This test is useful for identifying
paper motion or paper feed problems.
Hammer bank cover
Power supply board
Paper motion sensor or cable
Paper feed belt or motor
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be adjusted or replaced if the test produces a bad print pattern. The
items are listed in the order you should check them: simplest items
first, complex items last.
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Troubleshooting
