4-2
ONE POINT REPAIR GUIDE
1. NO POWER PROBLEM (PVDD)
No power problem occurs when you power on the unit
1-1. Solution
If you check these points and find PVDD voltage is not checked, replace woofer SMPS board.
1-2. Service hint (Any picture / Remark)
< Woofer AMP board bottom view >
< Woofer AMP board top view >
PVDD
PVDD
pin3, 4, 5, 6 at WCN601
pin3, 4, 5, 6 at WCN601
PVDD
PVDD
pin7 at WIC606
pin7 at WIC606
Nearby WC610
Nearby WC610
PVDD
PVDD
pin7 at WIC607
pin7 at WIC607
Nearby WC686
Nearby WC686
PVDD
PVDD
at WCA601
at WCA601
Содержание LAS454B
Страница 11: ...2 2 ...
Страница 15: ...2 8 ...
Страница 26: ...3 11 WAVEFORMS OF MAJOR CHECK POINT 1 CRYSTAL FIG 1 1 X501 24 MHz 1 FIG 1 2 X502 X701 24 576 MHz 2 1 2 2 ...
Страница 27: ...3 12 2 FLASH MEMORY FIG 2 VCC CS CLK DO 3 4 5 6 6 5 4 3 VCC CS CLK DO ...
Страница 29: ...3 14 4 USB FIG 4 1 USB_5V 11 FIG 4 2 USB D 12 FIG 4 3 USB D 13 11 13 12 ...
Страница 31: ...3 16 6 OPTICAL FIG 6 1 OPT_IN 17 FIG 6 2 OPT_DET 18 18 17 ...
Страница 34: ...3 19 AUDIO PWM 2 2 FIG 8 5 Front L 384 14 kHz FL FL 26 FIG 8 6 Front R 384 17 kHz FR FR 27 26 27 ...
Страница 35: ...3 20 28 30 29 9 AUDIO AMP FIG 9 1 AMP IC PVDD PVDD 24 V 28 FIG 9 2 PVDD GVDD AMP_PDN 1S 28 29 30 ...
Страница 48: ...3 46 3 45 2 MAIN P C BOARD DIAGRAM TOP VIEW BOTTOM VIEW ...
Страница 49: ...3 48 3 47 3 FRONT P C BOARD DIAGRAM TOP VIEW BOTTOM VIEW ...
Страница 56: ...4 7 2 AMP VOLTAGE FIG 2 1 Woofer PVDD PVDD 34 5 V 4 FIG 2 2 Woofer 12 V 5 4 4 5 ...
Страница 57: ...4 8 3 PWM FIG 3 1 Woofer PWM SW SIgnal 6 FIG 3 2 Woofer PWM SW SIgnal 7 7 6 ...
Страница 58: ...4 9 4 LED FIG 4 1 Pairing Off Status Red LED 8 FIG 4 2 Pairing On Status Yellow LED 9 9 8 ...
Страница 59: ...4 10 ...
Страница 66: ...4 24 4 23 2 WOOFER AMP P C BOARD 3 WOOFER KEY P C BOARD TOP VIEW TOP VIEW BOTTOM VIEW BOTTOM VIEW ...
Страница 67: ...4 26 4 25 ...