PROBLEM PROBABLE CAUSE SOLUTION
Alternate Calling—Ring/
Voice and Live Call
Screening (LCS) do not
function
as
set
when using a
Wireless Phone
(KX-T7880KX-T7885/
KX-TD7894/KX-TD7895).
Voice-calling mode and
Hands-free mode with LCS
are not available with
Wireless Phones.
• Switch the calling mode to ring-calling.
• Set the LCS mode to "Private".
The ALARM
indicator
on
the
front of the Basic Shelf turns
on red.
A major system error
occurs in the PBX.
• See the error log using the Maintenance
Console (refer to "4.1.5 Troubleshooting
by Error Log").
The RUN indicator of an
Expansion Shelf does not
turn on.
Bus Cable is not connected
properly.
• Connect the Bus Cables properly.
Defective Bus Cable
(included with BUS-M card
or BUS-ME card).
• Replace the corresponding Bus Cable.
Optional service card
malfunction: BUS-M,
BUS-ME, BUS-S
• Replace the corresponding shelf
expansion card (be sure to turn off the
PBX when replacing a BUS-M card).
Defective Expansion Shelf.
• Replace the corresponding Expansion
Shelf.
The LINK indicator of the
BUS-M card of the Basic
Shelf does not turn on.
Bus Cable
is not connected
properly.
• Connect the Bus Cables properly.
Defective Bus Cable
(included with
BUS-M card
or BUS-ME card).
• Replace the corresponding Bus Cable.
Optional service card
malfunction: BUS-M,
BUS-ME, BUS-S
• Replace the corresponding shelf
expansion card (be sure to turn off the
PBX when replacing a BUS-M card).
Extensions connected to an
Expansion Shelf do not
send a dial tone.
Bus Cable
is not connected
properly.
• Connect the Bus Cables properly.
Optional service card
malfunction: BUS-S
• Replace the corresponding shelf
expansion card.
Defective Bus Cable
(included with
BUS-M card
or BUS-ME card).
• Replace the corresponding Bus Cable.
Installation Manual 317
4.1.1 Installation