Test Print Button - Tektronix Phaser 550 Service Manual

Test print button

The Token Ring network card has two LED indicators:
Connection (yellow); off when the printer is not inserted into the Token
Ring, blinks while the printer is attempting to insert itself into the
Token Ring, on when the printer is properly inserted in the ring.
Ring Speed (green); off when the card is set for 4 megabits per second
(MBPS), on when the card is set for 16 MBPS.
When both LEDs blink, a network card failure has occurred.
In the center of the rear cabinet panel is the test print button. Pressing this
button while the printer is idle causes the print engine to print a built-in test
print. The print consists of a field of thin horizontal lines. The print is made
independently of the image processor board. Hold in the test button for at least
4 seconds before releasing, or until you hear the print process begin.
General Information
Service Manual 1-11
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