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Infinite
816
Key Telephone
System
MAINTENANCE
AND TROUEiLESHOOTXNG
Table
800-S
Key Station
Testing
(Cont'dl
OPERATIONAL
TEST
RESULT
PROCEDURE
5.
Tone Volume
NOTE: Instrument
must
be in tone s&naBng mode.
5.1
From another instrument
51.1
Muted tone is heard
5.1.1
Normal
place an intemm
call to
Adjust volume
set under test.
5.1.2
Muted tone is not heard
5.1.2
Check the connections
of
speaker connector
'SP'
in the instrument
5.2
Depress the ON/OFF
5.2.1
The muted ringing tone is
5.2.1
Normal
ag-
louder.
5.3
AdJust the tone volume
53.1
Increase
or decrease
5.3.1
Normal
volume
as desired
5.3.2
No reaction.
5.3.2
Change the instrument.
6.
Transmitting
of Data
SigIldS.
6.1
When Incorrect or no
6.1.1
Only ON/OFF LED
6.1.1
Check cabling.
data signals are
willlight when pressed.
transmitted
between KSU
?he remaining
LEDs will
and instrument.
not light.
7.
Where there is difficulty
7.1.1
Calls are not received
7.1.1
Check the connections
of
in the operation
of
through
the built-in
speaker cfxmector
'SP' in
speakerphone.
Speaker.
the instrument.
7.2.1
Speech through
7.2.1
Check that the
microphone
of the
instrument
is in the on-
instrument
is not
hook mode.
transmitted.
7.2.2
Check the microphone
connections
in the
instrument
7.2.3
Check the ribboncable
of
the
speakerphoneconnector
in the instrument.
7.2.4
Replace keyset
Issue
1, January
1992
800-5
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