8
(3)
Delete recording: press the Delete key in the recording standby state to delete the
recordings currently preset by users; If no recording exists, the product will give a warning
sound prompt and exit to the recording standby state.
3.5 Fault indication
1) AMP FAULT
（
Power amplifier fault
）
: When the fault feedback signal from power amplifier is
detected, the "AMP FAULT" indicator (yellow) is normally on, and the buzzer sounds.
2) OVERLOAD (Power amplifier overload): When the overload feedback signal from power
amplifier is detected, the "OVERLOAD" indicator (yellow) is normally on, and the buzzer
sounds.
3) BUS FAULT : When the trunk open circuit and short-circuit signal is received from control
panel, the "BUS FAULT" indicator (yellow) is normally on, and the buzzer sounds.
4) FAULT (Partition fault): When the fault partition information is received from the control panel,
the corresponding "FAULT " indicator (yellow) is normally on, and the buzzer sounds.
5) MAINS FAULT (Mains supply fault): When the mains supply fault signal is detected, the
"MAINS FAULT" indicator (yellow) is normally on, and the buzzer sounds; in the normal state,
the indicator is normally off.
6) BATTERY FAULT (Backup power failure): When the Backup power failure signal is detected, the
"BATTERY FAULT" indicator (yellow) is normally ON, and the buzzer sounds; in the normal
state, the indicator is normally off.
7) MUTE: When the fault alarm sounds, press "MUTE" key or receive an external mute signal from
485, the "Mute" indicator is normally on, and the buzzer is muted; if there is a new fault in
mute period, the buzzer works again and, upon receipt of mute signal, is silenced again. (
Note:
The mute operation can only eliminate the buzzer sound, the corresponding fault
indicators are not affected, and will not return to the normal state before the fault is
eliminated.
)
3.6 Monitoring and self-checking functions
1) Monitoring: The monitoring function can be turned on or off by the key "START MONITOR",
and the status is indicated by the corresponding indicator.
2) Self-check: Enable self-check function through the "SYS TEST" button, check the indicating
device and alarm device, and then the product will automatically exit to the state before
self-check after the check. Self-check is automatically aborted when additional responses are
received during the check.
3.7 Manual/automatic switching function
1) Manual mode switching to automatic mode: This operation can take effect in emergency and
non-emergency state respectively. After "Auto/Manual" button is pressed, the corresponding
"Automatic/Manual" indicator will change from normally ON to normally OFF.
2) Automatic mode switching to manual mode: This operation can only take effect in the
emergency state, and after the "Auto/Manual" button is pressed, the corresponding
"Automatic/Manual" indicator will change from normally OFF to normally ON. (
Note: In case
of emergency, the "Emergency stop" function and the start & stop of single partition