SERVICE MANUAL
LBB 3310/00, 3330/00 and 3331/00
page: 11
Date of issue:
4822 861 11006
July 1998
10.
Diagnostics/ Fault finding
10.1.1 Functional test
Before you start the functional test connect a correct working chairman unit and at least two delegate units to
the
CPSU
and switch on the CPSU
Testing the Light-ring
Put the mode switch in the TEST position
All the Light-rings of the delegate and chairman units must lit now
Testing the OPEN 1 mode
•
In this mode maximum one delegate unit can be active at the same time.
•
Put the mode switch of the CPSU in the OPEN 1 mode.
•
Press the microphone switch on one of the delegate units.
•
The microphone of the delegate unit is now activated, which is indicated by an illuminating indicator-ring.
•
Press the microphone switch of the second delegate unit.
•
This must have no effect. The indicator-ring of this delegate unit must stay off.
•
Press the microphone switch on the chairman unit.
•
The microphone and indicator ring of the chairman unit will be activated. This will have no affect on the
active
microphone(s) of the delegate unit(s).
•
Press the microphone switch on the first delegate unit a second time to switch off the microphone and
indicator
ring
.
Do this also for the chairman unit.
Testing The AUTO 1 mode
•
In this mode maximum one delegate unit can be active at the same time.
•
The test procedure is the same as the OPEN mode with the exception that the microphone automatically
will switch
off after a period of 30 sec. silence.
Testing the OVERRIDE mode
•
Put the mode switch of the CPSU in the OVERRIDE mode.
•
Press the microphone switch on one of the delegate units.
•
The microphone of the delegate unit is now activated, which will be indicated by an illuminating indicator-ring.
•
Press the microphone switch of the second delegate unit.
•
The microphone of the first delegate unit and indicator ring will switch off and the microphone of the
second
delegate unit and indicator ring will switch on.
Testing the CHAIRMAN ONLY mode
•
In this mode only the microphones of the chairman unit(s) can be activated.
•
Put the mode switch of the CPSU in the CHAIRMAN ONLY mode.
•
Press the microphone switch on a delegate unit.
•
This may have no effect.
Summary of Contents for CCS 800
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