Pub. 42004-730D
ICS Page/Party
®
AC Plug-in Amplifiers
Page 17 of 21
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Table 3. Additional Troubleshooting
(VLC Models 701-302ICSVC, 701-304ICSVC, 723-901ICS, and 751-001ICSVC)
Problem
Potential Cause
Speaker volume is
too low/loud.
•
Refer to the Audio Alignment section for the specific VLC model.
•
Ensure the nominal page line level is correct.
Cannot place a page.
Refer to Audio Alignment and Page Disable Control sections for the specific VLC
model.
RTU output is not
functional.
•
Refer to Remote Output Switching (Available with RTU Only) section for the
specific VLC model.
•
Check fuse F1 on RTU PCBA.
•
Check the cable connection at P5 on the RTU and VLC PCBA.
•
Check RTU terminal connections on TB7 on the RTU PCBA in the enclosure.
•
Check operation of connected device.
RTU input does not
function.
Inputs are only available with SmartSeries models.
Table 4. Additional Troubleshooting
(SmartSeries Models 701-902ICS, 701-904ICS and 751-901ICS)
Problem
Potential Cause
Speaker volume is
too low/loud.
•
Refer to the ALS Minimum Level, ALS Offset Level and SmartSeries VLC Level
sections for the specific model.
•
Check cable connection at
P4
.
•
Verify the nominal page line level is correct.
Page/Party
operation does not
function.
Refer to the Set the Address section for the specific model.
RTU output is not
functional.
•
For supervised output, verify no monitored output faults exist.
•
Check fuse
F1
, on the RTU PCBA.
•
Check the cable connection at
P5
on the RTU and SmartSeries PCBAs.
•
Check the RTU terminal connections on
TB6
and
TB7
on the RTU PCBA, in the
enclosure.
•
Check operation of connected device.
RTU input does not
function.
•
For supervised input, ensure no monitored input faults exist.
•
Check the cable connection at
P5
on the RTU and SmartSeries PCBAs.
•
Check RTU terminal connections on
TB6
on the RTU PCBA in the enclosure.
•
Check operation of connected device.
