Print Engine Troubleshooting; Verifying Image Processor Operation By Using The Test Pattern Generator - Tektronix Phaser 300i Service Manual

6
Troubleshooting

Print engine troubleshooting

Verifying image processor operation by using the Test Pattern Generator

6-2 Phaser 300i and 300RX Color Printer
When the printhead reaches its operating temperature, the printer
performs a printhead wipe and purge cycle. The front panel displays
the message Busy--Cleaning head .
Following the cleaning cycle, the front panel displays the message
Ready-- .
The print engine is initialized. The power supply fan runs continuously. If the
startup page feature has not been disabled and no error occurred with the
printer, the printer will, at this point, print a startup page.
This topic is a step-by-step procedure for systematically verifying particular
aspects of the printer's operation. Following this procedure should lead to the
cause of a printer's failure.
Instructions for using the Test Pattern Generator are provided in Appendix D
"Test Pattern Generator."
1. If the printer does not power up, or does not initialize, or the printer
initializes but the motors do not run properly, go to the later topic
"Verifying power supply operation" on page 6-4.
2. Observe that the Ready message is displayed on the front panel. If it
does not, go to the later topic "Verifying power supply operation" on
page 6-4.
3. Verify that the image processor's health LED is flashing. If it is not, go
to the topic "Image processor self-diagnostics" on page 6-44.
4. Attach the Test Pattern Generator to the printer's parallel port. The
Test Pattern Generator can be attached to the printer while the printer
is turned on.
5. Select any test pattern using the Test Pattern Generator's five DIP
switches and then press its TEST PRINT button.
6. After the print is made, remove the Test Pattern Generator.