Diagnostic - Panasonic EASA-PHONE KX-T123211D Installation Manual

OPTION (cont.)
KX-T12321 l' s diagnostic feature has two command systems.
One is a " Test commands" system which actually executes the diagnostic process, and the
other is a " Control commands" system which controls the state of diagnosis.
1. All components test
6. DISA module and OGM card test
The system consecutively executes test items as
following description.
2. CPU card and system control circuit test
The KX-T123211 system allovys you to test the
DISA-A card which controls all the DISA system,
the DISA-B card which consists of crosspoint
switches etc. and the OGM card which consists
of voice processors etc.
The system executes the test of i/o circuit, real
time clock chip on the CPU card and i/o circuit on
each card.
This is the basic test on the KX-T123211
system.
You should execute this test at first, because, if
i/o circuits have defects, the following test items
will be meaningless.
3. Cross point card test
The system executes the test of DTMF generator
and receivers at first, and executes the test of the
cross point switch circuits.
4. CO card test
This test allows you to check of relays, analogue
switches, bell detection circuits CPCLOOP current
detection circuits and bidirectional amplifiers on
the CO card no. 1 through no. 3.
5. Line circuit (LC) card test
7. OPX interface card and unit box test
Off premise extension (OPX) test allows you to
check the OPX interface card which consists of
the bi-directional amplifiers and analogue
switches, and the OPX unit box which consists of
hook detectors, ring trip circuits, loop current
sources, ringing generators and so on.
6. MODEM card test
This test allows you to check the digital and
analogue circuits on the MODEM chip with 300
bps and 1200 bps communication speed.
You can use this test on the on-site diagnostic
mode only.
The system executes the test of loop current
sources, ringing relays, hook detection circuits
and ring trip circuits on each LC card.
And it will execute the check of data
communication capability on the LC cards and
DSS console interface card.
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