3-5
ONE POINT REPAIR GUIDE
3. NO SOUND (PORTABLE FUNCTION)
3-1. Solution
Replace IC508 or portable jack (JK854).
3-2. How to troubleshoot (Countermeasure)
1) Please check the soldering status of portable jack (JK854).
2) Please check L854, L855 (portable L/R signal) of portable jack (JK854).
If you can’t find input signal, replace JK854.
3) If you can find input signal, check pin13, 14 of IC508.
4) If you can’t find signal at pin13, 14 of IC508, replace IC508.
3-3. Service hint (Any picture / Remark)
< MAIN board top view >
JK854
JK854
IC508
IC508
L855
L855
L854
L854
Содержание SH4
Страница 9: ...1 8 ...
Страница 15: ...2 6 Figure 1 9 HOW TO DISASSEMBLE THE MAIN SET 9 Disassembly finish ...
Страница 17: ...2 8 Figure 2 3 HOW TO DISASSEMBLE THE WOOFER 4 Disassembly finish ...
Страница 21: ...2 14 ...
Страница 36: ...3 15 2 FLASH MEMORY FIG 2 VCC CS CLK DO 4 5 6 7 6 7 5 4 VCC CS CLK DO ...
Страница 38: ...3 17 4 USB FIG 4 1 5 V Voltage 12 FIG 4 2 USB D 13 FIG 4 3 USB D 14 12 14 13 ...
Страница 40: ...3 19 6 OPTICAL FIG 6 1 OPT_IN 18 FIG 6 2 OPT_DET 19 19 18 ...
Страница 53: ...3 42 3 41 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD DIAGRAM TOP VIEW BOTTOM VIEW ...
Страница 54: ...3 44 3 43 2 FRONT P C BOARD DIAGRAM 3 KEY P C BOARD DIAGRAM TOP VIEW TOP VIEW BOTTOM VIEW BOTTOM VIEW ...
Страница 55: ...3 46 3 45 ...
Страница 62: ...4 7 4 AMP VOLTAGE FIG 4 2 AMP_12V FIG 4 1 AMP PVDD 10 11 11 10 ...
Страница 63: ...4 8 5 PWM FIG 5 2 Woofer PWM SW Signal FIG 5 1 Woofer PWM SW Signal 12 13 13 12 ...
Страница 64: ...4 9 6 LED FIG 6 2 Pairing On Status Green LED FIG 6 1 Pairing Off Status Red LED 14 15 15 14 ...
Страница 65: ...4 10 ...