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1
5
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TV ON/OFF
OPEN
CHAN UP/DATA IN
COMMON
AUDIO OUT
CHAN DOWN
3
TV
ON/OFF
CHAN
DOWN
CHAN
UP
(MALE
PLUG)
VOLUME CONTROL
SPKR
5
1
4
6
2
Pillow Speaker Setup
Set up pillow speaker after Commercial Mode Setup and Cloning procedures are complete.
Connect a Pillow Speaker to the LCD TV/Monitor
1. Connect the Pillow Speaker to the output jack on the
back of the TV.
2. Either:
• Slide the control switch to PILLOW SPEAKER on the
rear panel of the TV to control TV and hear audio on
pillow speaker.
• For TV speakers sound with pillow speaker control,
set the control switch to NORMAL SPEAKER.
Use a pillow speaker that is a UL recognized pendant
control bearing the warning: “Risk of fi re if used in oxygen
enriched atmosphere. Keep pendant control away from
oxygen equipment.”
Controlling the TV with Serial Data
The TV is capable of being controlled by a single-wire,
serial data signal. This is an LG patented technology and
is being implemented by certain brands of “smart” pillow
speakers.
Controlling the TV with Mechanical Switches
Pin 4 (common) is momentarily connected to pin 1, 3, or 6
via push-action switches to control Power On/Off and
Channel Up/Down. These pins are at +13 volts DC (when
measured from pin 4) with the switches open. Current
draw is 8 mA when a switch is closed. (This operation is
identical to previous models using the 5-wire interface,
except that only +7 volts DC was supplied and current
draw was only 2.5 mA.)
Pin No. Description
1 External TV On/Off switch.
2 (Not used)
3 External Channel Up switch or Data in.
4 Common connection for control, data, and audio
output. Impedance to earth ground is a 10-meg
resistor in parallel with a 1100 pf capacitor.
5 Isolated audio output. Nominal 14 ohm source
impedance with short circuit protection. Intended
for a pillow speaker with a low-impedance pad-type
volume control.
6 External Channel Down switch.
PILLOW
SPEAKER
PILLOW
SPEAKER
NORMAL
SPEAKER
SPEAKER SWITCH
TV