GAI-Tronics ICS Hazardous Area Page/Party Stations - Manual (Page 28)

Pub. 42004-723L2G
ICS Hazardous Area Page/Party
®
Station Page 26 of 31
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The following tables are provided to aid qualified service personnel in troubleshooting problems with the
ICS Page/Party
® Station.
Table 1. General Troubleshooting
Problem Potential Cause
Station not
functional  Refer to the “Field Wiring” section on page 6 for proper terminations.
 Verify incoming supply voltage at TB2 or TB3 on the Termination PCBA.
 Verify regulated 24 V dc at P1 of Termination PCBA. Caution! Supply
voltage present at P2.
Excessive hum or
buzz during
station operation. Inspect the Page/Party ® lines for proper line terminations, shorts, and grounds.
Crosstalk occurs
between
Page/Party
® lines.
 Inspect the Page/Party ® lines for proper line terminations, shorts, and
grounds.
 Inspect the Page/Party ® party line connections for crossing of the cable pairs.
Feedback occurs
during page.
 Check location and orientation of speakers in the area.
 Refer to the “Field Wiring” section related to mutual muting on page 6.
 Refer to Speaker Mute on page 10.
Squeal in handset
receiver.  Ensure proper termination on Page/Party ® lines.
 Ensure system line balance is connected.
Handset
microphone audio
is too low/loud.  Disconnect headset, if connected.
 Refer to the “Transmit Level” section on page 11.
 Check jumper settings or cable connections at P4.
 Ensure proper termination on Page/Party
® lines.
 Check handset connections.
 Check proper cable terminations between Termination and Main PCBAs.
 Check operation of hookswitch.
 Replace handset.
Handset receiver
audio is too
low/loud.  Refer to “Receiver Volume” on page 11.
 Check jumper settings or cable connections at P4.
 Ensure proper termination on Page/Party
® lines.
 Check handset connections.
 Check proper cable terminations between Termination and Main PCBAs.
 Check operation of hookswitch.
 Replace handset.