LG RCS606F Service Manual

3-19
ONE POINT REPAIR GUIDE
NO OPERATION OF MD
When no sound output in the CD function, you can not listen to music reading data
from a CD disc if the pickup module in MD doesn’t work. This step is for checking the
LASER TRACKING ACTUATOR.
4-5. LASER TRACKING ACTUATOR
4-5-1. Solution
Please check and replace IC407, IC408 on MAIN board.
4-5-2. How to troubleshoot (Countermeasure)
The tracking actuator makes the laser beam be positioned in the center of a track on CD disc.
1) Check the TRD signal from Pin14 of IC407.
 If no signal, check 3.3 V(RF) and X402.
2) Check T- & T+ from IC408 to CN404 for driving the tracking actuator.
 If no signal, check +1.8 V and +5 V for IC408.
3) Check if the FFC cable is solidly connected between CN404 and MD.
4) Check the MD.
 If the pickup module has any trouble, it can not move the laser beam on the left or right side.
Please check the function after changing another MD.
4-5-3. Service hint (Any picture / Remark)
{RGGju[W[
{TGju[W[
ju[W[
{R
ZGGju[W[
{T
YGGju[W[
< Waveform of T±
for driving TRACKING actuator >
< Signal check point >

LG RCS606F Specifications

General

Brand	LG
Model	RCS606F
Category	Stereo System
Language	English