LG S33A1-D Service Manual

3-9
RECEIVER BAR TROUBLESHOOTING
BD/ CD/ DVD disc or USB play
Portable function
Check JK304 or replace.
Check JK303.
YES
YES
YES
YES
NO
NO
IC301
Pin112, 113 USB_IN signal
OK?
IC304
Pin1, 2 PTB input signal
OK?
Check IC301 or replace.
Check IC304.
YES
YES
NO
NO
IC301
Pin69,70, 71, 74 PWM Signal
OK?
IC304
Pin 9,10,13 I2S output signal
OK?
Check AMP IC output stage
and speaker terminal.
Check AMP IC output stage
and speaker terminal.
1-3. NO AUDIO OUTPUT

LG S33A1-D Specifications

General

Brand	LG
Model	S33A1-D
Category	Speaker System
Language	English