3-7
ONE POINT REPAIR GUIDE
5. NO BLUETOOTH
5-1. Solution
Replace IC502 on MAIN bottom board. (No 3.3 V)
5-2. How to troubleshoot (Countermeasure)
1) Please check externally status of bluetooth cable connection on your eyes.
(at CN508 and bluetooth module)
2) Please check 3.3 VA at FB503.
If 3.3 V is ok at FB503, please check BT_SDA, BT_SCL, BT_RST (pin53, 51, 25) of IC502 and BT_RX,
BT_TX (pin29, 27).
If you have no signal, please replace IC502.
5-3. Service hint (Any picture / Remark)
< MAIN board top view >
< MAIN board bottom view >
IC502
IC502
FB503
FB503
CN508
CN508
Summary of Contents for SH4
Page 9: ...1 8 ...
Page 15: ...2 6 Figure 1 9 HOW TO DISASSEMBLE THE MAIN SET 9 Disassembly finish ...
Page 17: ...2 8 Figure 2 3 HOW TO DISASSEMBLE THE WOOFER 4 Disassembly finish ...
Page 21: ...2 14 ...
Page 36: ...3 15 2 FLASH MEMORY FIG 2 VCC CS CLK DO 4 5 6 7 6 7 5 4 VCC CS CLK DO ...
Page 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 ...
Page 40: ...3 19 6 OPTICAL FIG 6 1 OPT_IN 18 FIG 6 2 OPT_DET 19 19 18 ...
Page 53: ...3 42 3 41 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD DIAGRAM TOP VIEW BOTTOM VIEW ...
Page 55: ...3 46 3 45 ...
Page 62: ...4 7 4 AMP VOLTAGE FIG 4 2 AMP_12V FIG 4 1 AMP PVDD 10 11 11 10 ...
Page 63: ...4 8 5 PWM FIG 5 2 Woofer PWM SW Signal FIG 5 1 Woofer PWM SW Signal 12 13 13 12 ...
Page 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 ...
Page 65: ...4 10 ...