ZETRON 4000 Series, Installation Manual

Page: 174 / 418

System Check
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• The red “ERROR” LED may be illuminated but only on the Console Interface
Cards (CICs).
• No other ERROR LEDs should be illuminated.
5. Turn on the power to the console(s). The time/message display on the console may
say “SEE.LOG”, but when cleared it should display a time (which may be
incorrect). If the console is equipped with a FAIL ACK button, pressing it will
clear the diagnostics message. If not equipped with a FAIL ACK button, the
display will clear either when the next button is pressed or after a few moments. If
the display shows “dISCOn”, the dispatch console is not communicating with its
associated CIC in the CCE. If the console is communicating, the “ERROR” LED
of the associated CIC should turn off (if it was on). In addition, the printer output
should show that the communication path has been restored.
(Items 6 through 10 apply only to “button” consoles.)
6. If the console display remains blank when the power is turned on, check the power
supply voltage and polarity. In addition, check fuse “F1” inside the dispatch
console.
7. If the console display shows “ProG”, remove the access cover and switch the
“Program Enable/Protect” switch (SW2) to the “Protect” position. The console
then returns to normal operation.
8. If the console is not communicating, check the wiring between the associated CIC
and the dispatch console. A common wiring mistake is to plug the “VOICE” and
“DATA” cables into the wrong jack. Ensure that the data rate settings on the CIC
and the console are the same.
9. If the auxiliary control panels are not operating, check for proper connection of the
“Loop Cables” between them. The cables must form a loop connecting the “Loop
Out” of every unit to the next unit’s “Loop In”. Ensure that the power fuse (F1) is
not blown.
10. If the system is operating correctly, adjust audio levels as described in
Audio Level
Adjustments on page 177.
On-Card Diagnostics
Every circuit card in the CCE, except the STC card, is equipped with four status
indicators, a fail-reset push-button, and a card-reset push-button. The STC card has three
status indicators and the two reset push-buttons. Status indicators are located at the bottom
of the legend plate of each card.
Note While making the adjustments, you will also be verifying the
connections to the radio channels, as well as the dispatch console
audio path. Problems in verifying proper levels may indicate
problems in the wiring either to the channels or in the audio/voice
signals to the console.