LG CM4330 User Manual

1. POWER (SMPS)
No 3.7 VA
YES
F901 normal? Replace F901 (Use the same fuse).
YES
NO
BD901 normal? Replace BD901.
YES
NO
TH901 normal? Replace TH901.
YES
NO
Is Vcc
(10 V ~ 18 V) supplied to
IC901 Pin7?
D904 normal?
YES
NO
Check or replace D904.
Is there
about 2.5 V at
IC903 Pin1?
Replace IC903.
YES
NO
D923 normal? Replace D923.
YES
NO
D921 normal? Replace D921.
YES
NO
D924 normal? Replace D924.
YES
NO
D925 normal? Replace D925.
YES
NO
D922 normal? Replace D922.
YES
NO
Power line of Main PCB is short.
NO
3-16
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