251-006 Passenger Speaker Amplifier
SM251 Installation and Operation Manual Supplement
SM Supplement Rev: 1.00 May 13, 2009 Page 1
ENG-FORM: 810-0111.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
This supplement contains installation and operation information that is unique to the 251-006 Passenger
Speaker Amplifier. Installation and operation information common to the 251 base unit can be found in
the SM251 Equipment Manual.
Section 1 Description
The 251-006 Passenger Speaker Amplifier is identical to the 251 with the following exceptions:
a) The chime tones are routed to the PA sidetone audio output.
b) The chime tones are activated upon the activation of the PA key.
Section 2 Installation
For installation information and drawings, see SM251. Select the appropriate revision of the drawing for
the serial number of the unit. The drawings specific to this derivative are listed below and can be found at
the end of this supplement.
2.1 Installation Drawings
DOCUMENT REV. DESCRIPTION TYPE SERIAL NO.
251-006
251\006\403-0 1.00 Passenger Speaker Amplifier Interconnect 2414 and up
251\006\405-0 1.00 Passenger Speaker Amplifier Connector Map 2414 and up
Section 3 Operation
For operation information, see SM251 Section 3 with the following exceptions:
a) The chime tones are routed to the PA sidetone audio output.
b) The chime tones are activated upon the activation of the PA key.
Supplement ends
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