OKIDATA Pacemark 3410 Service Manual page 177

Page: 113
Service Guide PM3410
Chapter 4 Failure & Repair Analysis
4.8 PRINTER TESTS
4.8.01 Rolling ASCII Test
CAUTION:
Select the correct paper width setting in the Printer Menu for the paper feed path. Using 9.5 inch paper in
a path set for 13.6 inch paper will cause this test to be printed on the right side of the platen. This could
destroy the printhead or platen.
This test will not run unless continuous feed paper is installed in the printer.
General Information
The Rolling ASCII Test will continually print the ASCII Character Set (shifting the characters one position
to the right on subsequent lines).
If the characters appear lighter towards either margin, check the printhead gap adjustment.
If the print is light across the entire page, check the setting of the printhead gap adjusting lever. If the lever
is in the correct position, this problem could be caused if the printer is using an old ribbon, or by an
incorrect printhead gap adjustment.
The header contains information which can be helpful when servicing the printer.
Printer Model
Character Set
Firmware Part Number (Current part numbers are available through Okilink II)
Emulation
Firmware / Character Generator Revision Level
Procedure
To perform the Rolling ASCII Test, follow this procedure.
1. Verify that continuous feed paper is installed.
2. Verify that the ribbon is correctly installed.
3. Verify that the width of the installed paper matches the paper width menu setting.
4. Power OFF the printer.
5. Press FORM FEED as you power ON the printer.
6. The Test will run until one of the following situations occur.
A. The technician presses SELECT.
B. A Paper End condition is encountered.
Sample