Operation Of Md - LG DM5360K Service Manual

NO OPERATION OF MD
When no sound output in the CD/DVD function, you can not listen to music reading data from a CD/
DVD disc if the servo motors in MD don't work. This step is for checking the SLED MOTOR among
them.
4-2. SLED MOTOR
4-2-1. Solution
Please check and replace IC800, IC803 on MAIN board.
4-2-2. How to troubleshoot (Countermeasure)
1) Check the VREF signal from pin6 of IC800.
- If no signal, check 3.3 V (pin167 RF) and X801.
2) Check the SLED+ & SLED- from IC803 to CON803 for driving SLED motor. It is about 2.9 Vp-p.
- If no signal, check +5 V for IC800.
3) Check if the cable is solidly connected between CON802 and MD.
4) Check the MD.
- If the spindle motor is sort-circuit or has any trouble, it can not rotate CD discs.
Please check the function after changing another MD.
4-2-3. Service hint (Any picture/ Remark)
pin11 to IC803 pin11 to IC803
ONE POINT REPAIR GUIDE
SL+ SL+
IC803 IC803
< MAIN board top view >
pin12 to IC803 pin12 to IC803
3-7
SL- SL-