LG CM4330 User Manual

CD FUNCTION
YES
Can the
disc insert?
NO
Is Motor_open/close
OK? (IC301 Pin10,11)
NO
Refer to function
check.
YES
Disc reading
is ok?
Is no signal at spk?
YES
Is Motor ok?
(about 12 Ω)
Is load +,- ok?
YES
Check
the signal of
IC302 Pin34,35,36.
NO
YES
Check
the signal (16.0344 MHz)
of IC302
Pin31.
NO
YES
Check IC801
input/output and
control line.
NO
YES
YES
Check loading motor.
NO
IM driving (Focus and
tracking) is ok?
NO
Focus/
tracking/sled signal
is ok?
NO
Check IC301
(Motor drive IC).
NO
Is the PD(CN301
Pin22) about 190 mV?
YES
Check Vcc of IC302.
Check Cristal (X301).
NO
Replace Cristal
(X301).
Replace IC801.
Check IC301.
YES
1. CD FUNCTION
Check IM
(pick-up).
NO
3-27
CDP 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