LG CM4330 User Manual

2. μ-COM PART CHECK
μ-COM PART
CHECK
Refer to
SMPS troubleshooting.
NO
Check if
voltage of CN105 Pin10
is 3.7 VA.
Check if output of
D103 is 3.7 V.
NO
Check
both end voltage of
D102, D103.
Check if IC101_Pin49 and
IC101_Pin36,59 are 3.7 V.
YES
Check D102, D103.
Replace D102, D103.
NONO
X101: 32.768 kHz
X102: 9.8304 MHz
Check the operation.
OK
YES
YES
YES
YES
YES
OK
3. IC102(N24C16) CHECK
CHECK IC102 PIN.
Refer to μ-COM troubleshooting.
NO
Pin47: DATA
Pin48: CLK.
Replace μ-COM.
NO
YES
Check μ-COM
voltage 3.7 VA.
Check μ-COM.
YES
OK OK
YES
YES
NO
3-20
AUDIO ELECTRICAL TROUBLESHOOTIHG GUIDE

LG CM4330 Specifications

General

Karaoke	No
Bass reflex	Yes
Speaker type	4-way
RMS rated power	180 W
Number of speakers	2
Type	Home audio mini system
Product color	Black
Disc types supported	CD-R, CD-RW
Playback disc formats	CD audio
Audio formats supported	MP3, WMA
Supported radio bands	AM, FM
Display type	-
Apple docking compatibility	Not supported
USB 2.0 ports quantity	1
Power source	AC
Volume control	Rotary