3-7
ONE POINT REPAIR GUIDE
5. NO SOUND (USB)
5-1. Solution
Replace IC502 on MAIN board.
5-2. How to troubleshoot (Countermeasure)
1) Please check USB voltage (5 V) of JK503 (pin1).
2) Please check USB data signal (D-, D+ ) of IC502 (to check pin2, pin3 at JK503).
If you have not data signal, please replace IC502.
5-3. Service hint (Any picture / Remark)
< MAIN board top view >
JK503
JK503
(pin1)
(pin1)
Содержание SoundPlate LAP250H
Страница 26: ...3 15 2 FLASH MEMORY FIG 2 VCC CS CLK DO 4 5 6 7 5 6 4 7 VCC CS CLK DO ...
Страница 28: ...3 17 4 USB FIG 4 1 USB_5V 12 FIG 4 2 USB D 13 FIG 4 3 USB D 14 12 14 13 ...
Страница 30: ...3 19 6 OPTICAL FIG 6 1 OPT_IN 18 FIG 6 2 OPT_DET 19 19 18 ...
Страница 35: ...3 24 ...
Страница 49: ...3 52 3 51 2 MAIN P C BOARD TOP VIEW BOTTOM VIEW ...
Страница 50: ...3 54 3 53 3 FRONT P C BOARD TOP VIEW BOTTOM VIEW ...
Страница 51: ...3 56 3 55 ...