LG FH6 - Page 34

3-15
ONE POINT REPAIR GUIDE
NO SOUND
There is no sound output in the Tuner function.
4-3. TUNER FUNCTION
4-3-1. Solution
Check IC203 (Tuner IC) on MAIN board.
4-3-2. How to troubleshoot (Countermeasure)
1) Check Tuner L/R signal of IC203. (pin13, 14)
If the signal is OK, check ADC IC block. (go to 4-2-2)
2) Check frequency of X201. (32.768 kHz)
If the frequency is abnormal, replace X201.
3) Check VCC_3V3 of IC203.
If VCC_3V3 is abnormal, check IC304.
4) Check input data of IC203. (pin2)
If input is OK, replace IC203.
4-3-3. Service hint (Any picture/ Remark)
< MAIN board top view >
IC203
IC203
(Si4705)
(Si4705)
X201
X201
(32.768 kHz)
(32.768 kHz)