Pub. 42004-658L2H
701-902 SmartSeries
®
Handset/Speaker Amplifier
Page 14 of 15
P:\Standard IOMs - Current Release\42004 Instr. Manuals\42004-658L2H.docx
08/19
Fault Message
Cause and Effect
Possible Solution
Supervised Audio
Path
Handset
Cause
—The station failed its internal health
check of the Handset/FSK/
P PCBA.
Effect
—The station disables the handset
amplifier health-check function after the first
failure.
•
Replace the
Handset/FSK/
P PCBA.
•
Replace the Speaker
Amplifier/Power Supply
PCBA.
Supervised Audio
Path
Page Amplifier
Cause
—The station failed its internal speaker
amplifier health check.
Effect
—The station disables the speaker
amplifier health-check function after the first
failure.
Replace the Speaker
Amplifier/Power Supply
PCBA.
Supervised Audio
Path
Speaker Voice Coil
Cause
—The station is detecting no ambient
noise at the speaker or is detecting an ambient
noise lower than the configured failure
threshold. This may occur if there is a fault in
the speaker wire or a fault at the voice coil.
This also may occur if the ambient noise at
the speaker is too low, as is the case in a quiet
room.
Effect
—The station continues measuring
speaker ambient noise. When acceptable
noise levels are subsequently measured, a
restore message is sent to the MCU.
•
Verify that the speaker
wire is connected and
intact.
•
Verify that the voice coil
is connected and intact.
•
Replace the Speaker
Amplifier/Power Supply
PCBA.
•
Replace Handset/FSK/
P
PCBA.
Polled device
Cause
—This message is output by the MCU
when it loses communication with the station.
This may occur if there is a fault in the page
line, if the station is powered-down, or if
there is some fatal malfunction within the
station.
Effect
—The MCU continues to attempt
communication with the station. When
communication is resumed, a restore message
is sent to the MCU.
•
Verify that the page line
is connected and intact.
•
Verify that the station is
installed correctly.
•
Replace the
Handset/FSK/
P PCBA.
Polled End-of-line
device
Cause
—This message is the same as the
“Polled device” fault, except that the affected
station has been defined as an end-of-line
station in the MCU configuration.
Effect
—When this fault occurs, the red
EOL
FLT
LED on the PPI bezel lights. When
communication is resumed, the LED
extinguishes and a restore message is sent to
the MCU.
•
Verify that the page line
is connected and intact.
•
Verify that the station is
installed correctly.
•
Replace the station
assembly.
