LG Electronics 22LG3DCH CRT Television User Manual


 
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1
2
3
4
5
6
3
1
5
2
4
6
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 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