LG CMS4540F/W Service Manual

7. TUNER / AUX FUNCTION CHECK
FUNCTION CHECK
Check JK200,TU500.
NO
YES
Check IC201
(CS5346) Pin23, 24,
26, 27 input.
YES
YES
Check IC201
(CS5346) Pin41 output
data.
YES
YES
Check IC201
Pin5: +3.3 V
Pin14: +5 V.
Check CN501 Pin7,8: +5.6 V.
NONO
Check
IC501(MLC3730)
input data.
YES
Check IC201
Pin5: +3.3 V,
Pin6: High,
Pin14: +5 V.
Check IC201
Pin41: SDOUT,
Pin42: SLCK,
Pin43: LRCK,
Pin44: MCLK.
NONO
IC501(MLC3730)
output data.
Replace IC201.
OK
YES
3-25
AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

LG CMS4540F/W Specifications

General

Brand	LG
Model	CMS4540F/W
Category	Stereo System
Language	English