Read LG 37LN548C / 37LN549C / 37LP360H / 37LP361H (CHASSIS:LD3AC) Service Manual online
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8. Check Commercial Features.
8.1. External speaker(8OHM, 1W, Single-End)
<Equipment & Condition>
■ External speaker and Oscilloscope
■ Power only mode
(1) Connect external speaker(8 ohm) to speaker out port with
phone jack on TV side as below.
(2) Check the Max. speaker output is 1W or not. Sine wave
with 1KHz will be displayed.
8.2. IR OUT
< Equipment & Condition >
■ Simple Jig (commercial check JIG)
■ Power only mode
(1) Connect each other RS232C port on the Commercial
Check JIG.
(2) Press any key on Service Remote-control.
(3) Check the LED status of the Check JIG.
- IR LED(OK condition: blinking) (LED #1)
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