3-10
ONE POINT REPAIR GUIDE
9. IF NOT BOOTING WHEN YOU TURN ON THE SET.
9-1. IC503, IC504 (DDR IC)
9-1-1. Solution
Replace IC503, IC504 on MAIN board.
9-1-2. How to troubleshoot (Countermeasure)
1) Check 0.75 V of DDR3_VREF (Point 1).
If voltage is abnormal follow the stage 3-1 at the previous page.
2) Check 0.75 V of DDR3_VREF (Point 2).
If voltage is abnormal follow the stage 3-1 at the previous page.
3) Check 1.5 V of C5A5.
4) If 1.5 V and 0.75 V are abnormal, check the around parts (C5A5, C5A6, R555, R556).
5) If there’s no defective component, follow the stage 3-1 at the previous page.
6) When you followed above step but it doesn’t work, replace the IC503, IC504.
9-1-3. Service hint (Any picture / Remark)
< Main board bottom view >
< Main board top view >
IC503
IC503
C5A5
C5A5
Point 1
Point 1
Point 2
Point 2
IC504
IC504
Содержание NP8340
Страница 8: ...1 7 7 Press Update button 8 Download result display OK if start download ...
Страница 15: ...1 14 ...
Страница 17: ...2 2 ...
Страница 41: ...3 22 3 MPEG IC501 MT8506 XTAL 27 MHz 6 IC501 MT8506 WE IC501 MT8506 CLK 7 8 6 7 8 ...
Страница 42: ...3 23 MPEG IC501 MT8506 CAS 9 IC501 MT8506 BA0 10 9 10 ...
Страница 54: ...3 46 3 45 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...
Страница 55: ...3 48 3 47 2 TOUCH P C BOARD 3 LED P C BOARD TOP VIEW TOP VIEW BOTTOM VIEW BOTTOM VIEW ...