3-14
ONE POINT REPAIR GUIDE
NO SOUND
There is no sound output in the AUX FUNCTION, repair the set according to the fol-
lowing guide.
5-4. IN THE AUX FUNCTION
5-4-1. Solution
Please check and replace IC401 on MAIN board.
5-4-2. How to troubleshoot (Countermeasure)
1) Check AUX_L/R signals to IC401 (Pin7, 8).
2) Check if DAC_BCK, DAC_LRCK, & DAC_MCLK are entered from IC801 to IC401.
3) Check if ADC_DATA is entered from IC401 to IC801.
If no signal, check +5 V & +3.3 V(ADC) for IC401. If is NG, replace it a new one.
4) Check the following I2S signal flow from IC801 to IC602. (Refer to Item 5-1.)
If there is any trouble, check the power for each IC. The power is normal but, if the signal waveform to
the IC is distorted or no signal, replace it with a new one.
5) Check if the digital audio AMP block is okay. Refer to “Digital Audio AMP” guide on Item 5-2.
If AMP is damaged, replace it with a new one.
5-4-3. Service hint (Any picture / Remark)
h| sGGy[Y\
h| yGGy[Y[
khjijr Gy[W_
hkjkh{hGGGy[W`
khjtjsr Gy[W]
khjsyjr Gy[W^
AUX
{T
{T
IC801
MLC9800
IC602
PS9850
PWM
AMP IC
TAS5612
DAC_BCK
DAC_LRCK
IC401
CS5346
DAC_DATA
DAC_MCLK
ADC_DATA
DAC_MCLK
AUX_L/R
< Signal check point >
< AUX function signal
fl
ow >
Содержание RAS376BF
Страница 11: ...1 10 MEMO ...
Страница 13: ...2 2 MEMO ...
Страница 17: ...2 8 A60 4 SPEAKER SECTION 4 1 FRONT SPEAKER RAS376BF ...
Страница 18: ...2 9 A90 4 2 PASSIVE SUBWOOFER RAS376BW ...
Страница 19: ...2 10 MEMO ...
Страница 51: ...3 32 MEMO ...
Страница 52: ...3 33 3 34 6PIN CDM 345 CN301 CN303 CN302 CN105 CN401 CN501 CN304 CN104 CN502 CN902 CN903 CN901 WIRING DIAGRAM ...
Страница 63: ...3 55 3 56 PRINTED CIRCUIT BOARD DIAGRAMS 1 MAIN P C BOARD TOP VIEW Rev 2 2 ...
Страница 64: ...3 57 3 58 MAIN P C BOARD BOTTOM VIEW EAX63554401 Rev 2 2 ...
Страница 66: ...3 61 3 62 4 USB P C BOARD MEMO ...
Страница 67: ...3 63 3 64 MEMO MEMO ...