CSP-HMI-3
MD Helicopters, Inc
.
MAINTENANCE MANUAL
97-04-00
Page 103
Revision 12
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Neither this document nor any part hereof may be reproduced or transferred to
other documents or used or disclosed to others for manufacturing or any other
purpose except as specifically authorized in writing by MD Helicopters, Inc.
Copyright
©
1999
−
2016 by MD Helicopters, Inc.
Table 101. Troubleshooting ICS System (Cont.)
Symptom
Corrective Action
Probable Cause
Cannot transmit or receive radio
signals; ICS operation normal
between stations.
Defective radio equipment in
associated radio installation.
Repair or replace defective radio
equipment.
Defective audio control panel.
Repair or replace audio control
panel.
Cannot transmit radio signals; can
receive radio signals, and ICS
operation is normal at stations.
Defective audio circuits in vhf
COMM radio.
Repair or replace vhf COMM radio.
Defective transmit (XMIT) keying
circuit in audio control panel.
Repair or replace audio control
panel.
Cannot receive radio signals; radio
transmission and ICS operation
normal at stations.
Defective audio circuits in audio
control panel.
Repair or replace audio control
panel.
Defective receiver in associated
radio.
Repair or replace radio.
No transmitter sidetone audio at
any station during radio
transmission; otherwise, ICS, radio
transmission and radio reception
normal.
Incorrectly adjusted sidetone
volume control on audio control
panel.
Adjust applicable control as
necessary (Ref. manufacturer ’s
publication, Table 201, Sec. 01
−
00).
Defective sidetone audio circuits or
amplifier in audio control panel.
Repair or replace audio control
panel.
Defective sidetone circuits in
associated vhf or hf COMM radio.
Repair or replace vhf or hf COMM
radio.
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