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LG CM4330 User Manual

LG CM4330
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5. PWM MODULATION CHECK
PWM MODULATION PART CHECK
Check
CN105 Pin11 3.7 VA.
• Check IC601(TAS5548)
VDD 3.3 V
• Check VDD Core 1.2 V.
NO
Refer to
SMPS troubleshooting.
Check
X602(19.2 MHz)
operation.
NO
Replace X602(19.2 MHz).
Check X602
(19.2 MHz).
OK
YES
NO
Check
IC601 Pin21 input.
Check IC101
(LC87FC096AVU)
Pin41:PWM RESET
Pin45:PWM SDA
Pin46:PWM SCL
output.
NO
Replace R660,R659,R658.
Check line
resistor output
RST: R660 / SCL: R659 /
SDA: R658.
NO
YES
YES
YES
YES
YES
YES
OK
YES
A
3-22
AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

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LG CM4330 Specifications

General IconGeneral
KaraokeNo
Bass reflexYes
Speaker type4-way
RMS rated power180 W
Number of speakers2
TypeHome audio mini system
Product colorBlack
Disc types supportedCD-R, CD-RW
Playback disc formatsCD audio
Audio formats supportedMP3, WMA
Supported radio bandsAM, FM
Display type-
Apple docking compatibilityNot supported
USB 2.0 ports quantity1
Power sourceAC
Volume controlRotary

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