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panel.
AIRCRAFT
Communications DA 40 Series
AMM
Trouble Possible Cause Repair
Page 102
20 Sep 2007 23-50-00 Doc # 6.02.01
Rev. 5
No audio on pilot’s head-set
with the intercom or audio
panel switched OFF.
Faulty head-set. Replace head-set.
Open audio line. Do a test of the head-set audio
wiring. Refer to Chapter 92 for
the wiring diagrams.
No audio on co-pilot’s or
passenger headsets.
Open audio line. Do a test of the head-set audio
wiring. Refer to Chapter 92 for
the wiring diagrams.
Faulty intercom or audio panel. Replace the intercom or audio
panel.
AIRCRAFT
DA 40 Series
AMM
Communications
Doc # 6.02.01
Rev. 5 23-50-00 Page 103
20 Sep 2007
B. Audio Selector Functions
This paragraph applies to the KMA 28 and GMA 340 audio panels.
Trouble Possible Cause Repair
Audio selector panel does not
operate.
Audio panel switched OFF. Switch audio panel ON.
Circuit breaker pulled. Re-set circuit breaker.
Defective wiring. Do a continuity test of the
related wires. Replace defective
wires.
Faulty audio panel. Repair or replace audio panel.
No audio signal in head-set. Faulty head-set. Replace head-set.
Faulty head-set socket. Replace head-set socket.
Defective wiring between audio
panel and head-set socket.
Do a continuity test of the
related wires. Replace defective
wires.
Faulty audio panel. Repair or replace audio panel.
No audio signal in cabin
speaker.
SPR or SPKR button not
pressed.
Press SPR or SPKR button.
Defective cabin speaker. Replace cabin speaker.
Defective wiring between KMA
28 and cabin speaker.
Do a continuity test of the
related wires. Replace defective
wires.
Faulty audio panel. Repair or replace audio panel.
'Latched' type button on KMA
28 cannot be 'latched'.
Faulty KMA 28. Repair or replace KMA 28.
AIRCRAFT
Communications DA 40 Series
AMM
Page 104
20 Sep 2007 23-50-00 Doc # 6.02.01
Rev. 5
C. Marker Beacon Receiver Functions
This paragraph applies to the KMA 28 and GMA 340 audio panels.
Trouble Possible Cause Repair
Marker beacon receiver does
not operate.
Circuit breaker pulled.
Defective wiring.
Faulty audio panel.
Re-set the circuit breaker.
Do a continuity test of the
related wires. Replace defective
wires.
Repair or replace audio panel.
No marker beacon reception. Faulty audio panel.
Faulty marker beacon antenna.
Faulty connection between
marker beacon antenna and
audio panel.
Repair or replace audio panel.
Do a test for correct impedance
of the antenna. If necessary,
repair or replace the antenna.
Ensure proper cable
connections. Do a test for
correct impedance of the
antenna co-axial cable. Do a
test for continuity on each
cable. Do a test for short circuit
to ground and between cables.
Replace defective cables.
No audio signal. Marker lights
OK.
MKR/MUTE or MKR button not
pressed.
Faulty head-set.
Faulty head-set socket.
Faulty audio panel.
Press the MKR/MUTE or MKR
button.
Replace the head-set.
Replace the head-set socket.
Repair or replace audio panel.
AIRCRAFT
DA 40 Series
AMM
Communications
Doc # 6.02.01
Rev. 5 23-50-00 Page 201
20 Sep 2007
Maintenance Practices
1. General
This Section tells you how to remove/install the intercom, the audio panel, and the marker beacon
receiver antenna. It also tells you how to test the intercom or the audio panel. Refer to the equipment
manufacturers' manuals for more data about the audio integrating system.
2. Remove/Install the PM 1000 II Intercom
A. Remove the PM 1000 II Intercom
Detail Steps/Work Items Key Items/References
WARNING: MAKE THE ENGINE IS SAFE BEFORE YOU DO ANY WORK ON THE
AIRPLANE. IF THE ENGINE STARTS THE PROPELLER CAN CAUSE
INJURY OR DEATH.
(1) Make sure that the engine is safe.
Lycoming engine:
S Set the ignition switch to OFF.
S Set the ALT/BAT switch to OFF.
S Set the throttle to IDLE.
S Set the mixture control to LEAN CUT-OFF.
TAE engine:
S Set the ELECTRIC MASTER key switch to
OFF.
S Set the ENGINE MASTER switch to OFF.
S Set the power lever to IDLE.
(2) Remove the engine top cowling. Refer to Section 71-10 (Lycoming
version) or 71-11 (TAE version).
(3) Disconnect the airplane battery. Refer to Section 24-31 (Lycoming
version) or 24-34 (TAE version).
　
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本文鏈接地址：鉆石40系列AMM 1(102)