Music muting, Disassembly, Usic muting – PS Engineering PAR200 User Manual
Page 16: Isassembly

PS Engineering Inc. ®
PAR200 Audio Selector Panel, COM radio Controller and Intercom System
Installation and Operator’s Manual
200-228-0000
Page 2-9
Rev. 4, Dec. 2013
Music 2 is only heard by the passengers.
See § 3.9 for music distribution information.
NO T E
Use t h e l ow l evel ou t p u t of a n y a d d i t i on a l en t er t a i n m en t d evi ce t o con n ect t o t h e a u -
d i o p a n el . Ma x i m u m si g n a l l evel i s 3 VAC p - p . DO NO T u se a sp ea k er - l evel ou t p u t ,
t h i s wi l l ca u se i n t er n a l d a m a g e i n t h e a u d i o p a n el .
2.7.1.1
Music 1 all headsets (J2, Pin 22)
If J2, Pin 22 is connected to aircraft ground, Music 1 will also be heard in the passengers’ headsets. Music
2 will be disabled when J2, Pin 22 is grounded.
2.7.2
Music muting
The PAR200-system incorporates a "Soft Mute™" system. This will mute the music devices during inter-
com conversation or radio reception. The four muting modes are controlled by the front panel “Mute”
button. See §3.9 for more information.
CAUTION
Local oscillators and internal signals from entertainment equipment can cause undesired interference with
other aircraft systems. Before takeoff, operate the entertainment devices to determine if there is any ad-
verse effect within the aircraft systems. If any unusual operation is noted in flight, immediately switch off
the entertainment devices.
All entertainment devices must be switched off for both takeoff and landing.
2.7.2.1
Music 2 Mute (J2 Pin 13 & 14)
Connecting J2 pin 13 to pin 14 (or ground) through a SPST switch places the music #2 music source into
the Karaoke Mode. In this mode, incoming music and intercom conversation will not mute the music for
the passengers’ intercom net. This allows uninterrupted music during casual conversation.
2.8 Disassembly
Remove the top cover, by removing five (5) Phillips head screws from the PAR200 top.
NOTE: IF PRESENT, THE SCREW IN THE REAR OF THE PANEL IS A DIFFERENT
LENGTH THAN THE OTHER FOUR. IF PRESENT, YOU MUST REINSTALL THE SHORTER
LENGTH SCREW BACK IN THE SAME LOCATION OR DAMAGE WILL OCCUR..
There is a spacer on the screw on the front right corner that will fall out. Save and retain for later.
Figure 2-2 Screw Location and disassembly
Long screws