LG Multiplex 72 Service Manual page 17

NO Pic ture / SOUND OK
Chec k t he Wavef o rm o f
IC501 Pin42, 43, 44
No t OK OK
Chec k VCC o f IC501
Chec k t he
Pin 3. 15. 25, 45, 54
Heat er Vo lt 6. 0V~ 6. 4V?
3. 3V o r 5V?
OK No t OK OK No t OK
Chec k The Main Chec k/ Rep lac e Chec k Chec k
Po wer Bo ard IC501 FR901, FR401 FBT T402
3-13