Extron electronic 3000B - Manual (Page 88)

Exatron 3000B
www.exatron.com 5-9 Chapter 5 Diagnostics
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Tube Switch, 1 Through 8
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This diagnostic tests port B6, located on PCB #5000-A89, PAL A89-8.
Please refer to drawing #6000-517 for sensor wiring details.
TO ENTER THIS CHECK:
Handler displays DIAGNOSTICS
Press the [1] key.
Handler displays SENSOR CHECK
Press the [4] key.
Handler displays TUBE _ _ _ _ _ _ _ _ if all output tubes are removed from the handler. If numbers are
displayed, they indicate:
1 = Tube 1 Switch
2 = Tube 2 Switch
3 = Tube 3 Switch
4 = Tube 4 Switch
5 = Tube 5 Switch
6 = Tube 6 Switch
7 = Tube 7 Switch
8 = Tube 8 Switch
NOTE: The handler will display TUBE CLEAR WORK for two seconds whenever any of the output tubes
is removed. The message may flash when inserting a new tube. This is an indication that the "tube count
clearing" pulse is being received by the handler’s CPU. If this signal is not present, check pin 2,
PAL A89-10, on PCB #5000-A89. This pin should pulse whenever any tube is removed from the handler.
Pressing the [Clear] button will flash the terminal's displayed message to confirm the handler is still in this
specific diagnostic check.
Press the [Enter] button to EXIT this diagnostic check.