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TROUBLESHOOTING:
POWER PROBLEMS
1).
Unit is totally inoperative.
a.
Check that units are receiving 120 VAC.
b.
Make sure that the power supply unit of the DG-12
II
is turned “ON” and the LED is
lighted.
c.
Push the
Power Breaker[27]
IN and release quickly to reset power on DG-12
II
.
2).
Talkback totally inoperative.
a.
Check fuse at rear of DG-MA. Unplug DG-MA from 120 Vac source before checking the
fuse.
3).
No Microphone power.
a.
Check for short on the DG-12
II
“A” terminals to “c” (ground). Remove short, If there is
still no + 15/VDC on the terminal, DG-12
II
power regulator maybe damaged.
AUDIO PROBLEMS
1).
Loud sound in one zone causes alarm in another zone.
a.
Microphone wires crossed between zones.
2).
Talkback from DG-MA occurs in wrong zone.
a.
Speaker wires crossed between zones.
3).
Speaker monitors zones, but headphone does not.
a.
Faulty headphone.
4).
Zone microphone inoperative.
a.
Check for + 15Vdc at microphone between terminals “A” and “C”.
b.
Temporarily plug in the connector of a known working microphone from another zone to
the DG-12
II
Mic/Talkback 5-pin Header[24]
of the inoperative zone to confirm that the
circuitry of the DG-12
II
is operative and to confirm that the problem is in the remote
microphone or cabling.
5).
Zone speaker inoperative.
a.
Check wiring from DG-12
II
and remote speaker. Check color coding.
6).
No audio at speaker/headphone of DG-MA.
a.
Check that the plugs of cable connecting DG-12
II
Audio Out Jack[28]
and DG-12
II
Input Jacks[41]
on the DG-MA rear panel are making proper contact.
b.
Check if the jumper cable between
Audio Input Jack[38]
and
Audio Output Jack[39]
is
present. Jumper cable must be left in place when no recorder is connected.
c.
When used with a recorder interconnect cables. Replace recorder cables with factory
jumper at audio input/output jacks on the rear of DG-MA. If system works, recorder is
faulty.
7).
Sonalert inoperative
A.
Check position of
Keyswitch[16]
.
INSTALLATION AND OPERATING INSTRUCTIONS
Содержание DG-12II
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