4.1.3 Operation
PROBLEM PROBABLE CAUSE SOLUTION
• When using the
speakerphone on an
APT, nothing is audible.
• The HANDSET/
HEADSET selector is
set
to the "HEADSET"
position.
• When the headset is not used, set the
HANDSET/HEADSET selector to the
"HANDSET" position.
• When using the
speakerphone/monitor
mode with a DPT,
nothing is audible.
• The "HEADSET" mode is
selected by Personal
Programming, "Handset/
Headset Selection".
• When the headset is not used, select the
"HANDSET" mode by Personal
Programming.
• The PT does not ring. • The ringer volume is off. • Turn on the ringer volume.
• During a power failure,
extensions connected to
ports 1 to 4 of MSLC16/
CSLC16/SLC16
and
ports 1 to 2 of DHLC8/
SLC8 cards do not
operate.
• A DPT or APT is
connected to the
extension port.
• The dialling mode (tone
or pulse) is incorrect.
• Disconnect the DPT
or APT and connect an
SLT.
• Set the Tone/Pulse switch to the other
position.
• Originating an outside
call, call transfer, or
conference cannot be
performed.
• The corresponding CO
button does not exist on
the PT.
• Programme the CO button. Refer
to "1.20.2 Flexible Buttons" in the Feature
Guide.
• The LED of the CS does
not change to
Green ON.
• CS is not connected
properly.
• Make sure that the cable is connected
properly with correct pin assignments. Also,
make sure that the cable does not make
short circuits.
• CS is not set for normal
operation.
• Switch all DIP switches off.
• The status of the port that
the CS
is connected to is
Out of Service.
• Change the port status from Out of Service
to In Service using the Maintenance
Console.
<KX-TDA0158 only>
• The Local Processor
(LPR) software of the
corresponding
DHLC/
DLC card is not version
5.000 or later.
• Upgrade the LPR software of the DHLC/
DLC card.
<KX-TDA0158 only>
• Both KX-TDA0158 and
KX-TDA0155 CSs are
connected to the same
card, and the
KX-TDA0158 CSs are
connected to
higher-numbered pins on
the card than the
KX-TDA0155 CSs.
• Connect the KX-TDA0158 CSs to
lower-numbered pins on the card than the
KX-TDA0155 CSs.
• Connect the KX-TDA0158 and
KX-TDA0155 CSs to different cards.
Installation Manual 263
4.1.3 Operation
