Vodavi Starplus DHS, Техническое руководство

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7-4 CPU/Power LED
Table 7-3: Erratic Key Telephone Operation
SYMPTOM DIAGNOSTIC AID CAUSE CORRECTIVE ACTION
Erratic operation:
LCD Display and
LEDs
Faint data noise
during background
conversation
Digital Volt/OHM
meter Cable distance is too
long for gauge of
cable used.
Non-standard
telephone cable
being used or
multiple digital
stations fed from
one common cable.
If a key telephone is not receiving clear
2B+D signal from KSU, test as follows:
† Test cable with a known good keyset.
† Check wiring, cables, and connectors.
† Replace card.
† Check AC voltage.
Table 7-4: Key Telephone (cannot be heard)
SYMPTOM DIAGNOSTIC AID CAUSE CORRECTIVE ACTION
Other party cannot
hear you. (handset) Key Telephone
(other station) Component failure
1. Verify MUTE Btn LED is not lit.
2 Lift handset, dial another station. Talk.
3 Replace handset assembly and repeat
Step 1.
4 Replace handset cord and repeat
Step 1.
5 If still no transmit, the key telephone
will need to be replaced.