Clear-Com PIC-4704 - Manual (Page 22)

P I C - 4 7 0 4 , M A - 7 0 4 & A X - 7 0 4 I F B S Y S T E M 3 - 2
TROUBLESHOOTING TIPS
SYMPTOM CAUSE SOLUTION
Channel access
button not lit or
too dim. (a) No power.
(b) Insufficient power
(a) Check that power
supply is operating
and connected to the
PIC-4704
(b) Increase power
capacity or connect
fewer stations on each
cable run.
Access button
won’t light amber
when engaged at
any station. (a) Excessive DC load
on affected IFB line.
(b) IFB line shorted in
cabling.
(a) Isolate and replace
faulty module on
affected line.
(b) Isolate and repair
cable.
Access button
remains lit in
amber after being
released. IFB line not
termintated. Insure that station
connections to
PIC-4704 are intact.
No cue from an
AX-704 station. (a) Associated
MA-704 not
operating.
(b) Faulty or missing
connection to
MA-704 or AX-704
unit.
(a) Insure that
MA-704 is connected
to a PIC-4704.
(b) Verify connection
of extension bus to
affected AX-704 unit.
Hum or buzz from
program. (program
control affects
loudness) Mis-connection of
program source to
output. Program inputs are
balanced. If
single-ended source is
used, one of inputs
must be referenced to
common.