Daher-Socata TBM 900 Pilot's Information Manual page 352

PILOT'S OPERATING HANDBOOK
Cockpit overhead panel (Figure 7.3.2)
This panel includes following elements :
- the loud-speaker of GMA # 1,
- the loud-speaker of GMA # 2,
- the VMO alarm buzzer,
- the "HORN TEST" knob,
- the emergency lighting rheostat.
It is attached to the cabin upper part between frames C6 and C7.
The VMO alarm buzzer is electrically supplied by "ESS BUS 2" bar and protected by "AURAL WARN" circuit
breaker and the emergency lighting rheostat is electrically supplied by "BATT BUS" bar and protected by "PANEL
EMER" circuit breaker.
Aural warning operation
The GMA # 1 and # 2 audio control panels receive signals from the aural warning box. According to the airplane
configuration, these signals are low-pitched and / or high-pitched.
The "HORN TEST" knob allows to test the correct operation of aural warnings :
- Set the "SOURCE" selector to BATT or to GPU.
- Push and hold the "HORN TEST" knob :
. the VMO buzzer emits "bips",
. the loud-speakers emit alternate low-pitched and high-pitched sounds.
- Release the knob to stop the alarms.
Edition 0 -- October 31, 2013
Rev. 1
SECTION 7
DESCRIPTION
Page 7.3.3