1. Zone page or all call
page cannot be
accessed
1. Telephone system must have touchtone (DTMF)
dialing.
2. Check presence and polarity of voltage on
-24VDC and GND terminals on TB4
2. No background music.
1. Verify unit has released from last page.
2. Check program source, and adjust its volume
control, as desired.
3. Check presence of music audio input at "T" in
and "R" in and if necessary also at the music
source.
4. Check presence of music audio input at MUSIC
terminals on TB4, and if necessary also at
speaker amplifier, or central or zone amplifier
inputs.
3. No sound or low page
volume.
1. Check presence and level of audio input at Tip
and Ring terminals on TB4, and if necessary
also at the CO port. (or the Audio Page Port)
2. Check presence and level of audio at the zone
AUDIO output terminals on TB1, TB2, and TB3.
If necessary also at speaker amplifier inputs,
and central or zone amplifier inputs.
4. The page alert tone is
too high or too low.
1. Set the page alert Tone Volume Control in the
ZC-9, to the desired level.
5. Talkback does not
function properly.
1. Check to insure that the zone INH and GND
terminals on TB1, TB2, and TB3 are properly
connected to the Wheelock TBM-101 Talkback
Speakers and/or TBH-104 Talkback Horns.
2. Check for proper programming of the zone's
One-way/Talkback select switch.
3. Refer to the Wheelock TBM-101 and/or TBH-
104 installation instructions.
P81835 E
Sheet 11 of 12
Limited Warranty
Error! Bookmark not defined.
