Installing And Operating The System; Troubleshooting - Bosch CCS 800 Mode D'emploi

6 INSTALLING AND
OPERATING THE
SYSTEM
Warning: Before installing a
system, read the section
'Important safety instructions' and
safety precautions found at the
beginning of this instructions for
use. The CPSU must be earthed
via the mains supply for safety
reasons and to ensure the speci-
fied audio performance of the
system. Do not open the CPSU
and/or delegate/chairman units,
no user serviceable parts inside.
The pictures starting at page 93 illustrate
how to install and operate the system.
7

TROUBLESHOOTING

Temporary no microphone reaction, and no
sound or distorted sound from unit
loudspeakers
•
Possible cause
Trunk-line overload.
•
Solution
Reduce load on the trunklines by
reducing the number of units, and/or
the length of the trunk cables.
Acoustic Feedback
•
Possible cause
Loudspeaker volume too loud.
•
Solution
Reduce gain using volume control
for delegate/chairman unit
loudspeakers on CPSU.
•
Possible cause
Distance between units too small
(microphone to loudspeaker of other
units).
•
Solution
Increase distance between units.
•
Possible cause
Too close to microphone units, when
using open headphones.
•
Solution
Increase the distance between
headphone and microphone or
disconnect headphones when not in
use.
Part of system not working
•
Possible cause
Interrupted trunk-line cabling.
•
Solution
Check the trunk-line cabling
connections between the units and
the CPSU, also use the test function
on the CPSU.
No sound via delegate/chairman
loudspeakers
•
Possible cause
Insertion switch in wrong position.
•
Solution
- Check if insertion switch at the rear
of the CPSU is in position "1".
13