Yamaha DSP-A5 Service Manual page 11

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4. CONTENTS OF DIAGNOSIS FUNCTION
This section describes the contents of the Self Diagnosis Function in detail.
No.1 ANALOG THROUGH
The input is fixed to analog (A/D). There are two sub-menus.
1. MAIN BYPASS
The L/R signals bypass the digital circuit, and are output to the MAIN L/R.
The L/R signals are output without being processed to the CENTER/SUBWOOFER, FRONT L/R and REAR L/R
through the DSP. (Remote control code 7A-88: "1" key [DSP mode])
ANALOG IN
DIGITAL IN
: This shows that the device is not operating.
TE
L 13942296513
2. DSP 0dB
The L/R signals are output without being precessed to the MAIN L/R through the AC3D2av.
The L/R signals are output without being precessed to the CENTER/SUBWOOFER, FRONT L/R and REAR L/R through
the DSP.
ANALOG IN
DIGITAL IN
: This shows that the device is not operating.
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1 MA I N B Y P A S S
CODEC.ADC
AK4526A
DIR5
YSD917
1 D S P 0 d B
CODEC.ADC
AK4526A
DIR5
YSD917
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2 9
8
AC3D2av(YSS918)
DECODER DSP
L/R
DOLBY DIGITAL
or
PRO LOGIC
or
DTS
1M SRAM
Q Q
3 6 7 1 3
AC3D2av(YSS918)
DECODER DSP
L/R
DOLBY DIGITAL
or
PRO LOGIC
or
DTS
1M SRAM
.
9 4 2 8
DAC
L/R
AK4324
L/R FRONT L
CODEC.DAC
FRONT R
CENTER
L/R
SUBWOOFER
L/R REAR L
AK4526A
REAR R
• INPUT : DVD/LD (Analog signal)
(Lch and Rch, 1KHz, –20dBV)
• OUTPUT : SPEAKERS
MAIN L : 24.0 dBV REAR L : 24.0 dBV
1 5 0 5 8 2 9 9 4
MAIN R : 24.0 dBV REAR R : 24.0 dBV
CENTER: 24.0 dBV
DAC
L/R
AK4324
L/R FRONT L
CODEC.DAC
FRONT R
CENTER
L/R
SUBWOOFER
L/R REAR L
AK4526A
REAR R
• INPUT : DVD/LD (Analog signal)
(Lch and Rch, 1KHz, –20dBV)
• OUTPUT : SPEAKERS
MAIN L : 24.0 dBV REAR L : 24.0 dBV
m
MAIN R : 24.0 dBV REAR R : 24.0 dBV
CENTER: 24.0 dBV
co
DSP-A5
9 9
MAIN L
MAIN R
2 8 9 9
MAIN L
MAIN R
10