Contents Of Diagnosis Function; Analog Through - Yamaha DSP-A595a Service Manual

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 submenus.
1. MAIN BYPASS
The MAIN L/R signals bypass the analog circuits to be output.
For CENTER/LFE, FRONT L/R and REAR L/R, the MAIN L/R signals via the DSP are output without
being processed (through). (Remote control code 7A-88: "1" key [DSP mode])
CODEC.AD
ANALOG IN
AK4526A
DIR2
DIGITAL IN
YM3436
: This shows that the device is not operating.
1 DVD/LD
2. DSP 0dB
MAIN L/R, CENTER/LFE, FRONT L/R and REAR L/R pass through the DSP without being
processed.
CODEC.AD
ANALOG IN
AK4526A
DIR2
DIGITAL IN
YM3436
: This shows that the device is not operating.
1 DVD/LD MAIN BYPAS
AC3D2av(YSS918)
DECODER
DSP 0DB
AC3D2av(YSS918)
DECODER
L/R
DSP
L/R L/R
CODEC.DA
L/R
L/R
• INPUT : DVD/LD (Analog signal)
1M SRAM
• OUTPUT : SPEAKERS
MAIN L : 23.8 dBV
MAIN R : 23.8 dBV
CENTER: 23.7 dBV
L/R
DSP
L/R L/R
CODEC.DA
L/R
L/R
• INPUT : DVD/LD (Analog signal)
1M SRAM
• OUTPUT : SPEAKERS
MAIN L : 23.7 dBV
MAIN R : 23.7 dBV
CENTER: 23.6 dBV
DSP-A595a
MAIN L
DA
AK4320
MAIN R
FRONT L
FRONT R
REAR L
REAR R
CENTER
AK4526A
SUBWOOFER
(Lch and Rch, 1KHz, –20dBV)
REAR L : 23.7 dBV
REAR R : 23.7 dBV
MAIN L
DA
AK4320
MAIN R
FRONT L
FRONT R
REAR L
REAR R
CENTER
AK4526A
SUBWOOFER
(Lch and Rch, 1KHz, –20dBV)
REAR L : 23.6 dBV
REAR R : 23.6 dBV
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