Yamaha DSP-AX1/RX-V1 Service Manual page 23

YSS908 [Remote control code: 7A—9D (SET UP)]
When the analog, PCM audio or DOLBY DIGITAL 2/0 mode is used, LS, RS, RC signals are pro-logic
decoded in YSS908 and output.
When the DOLBY DIGITAL mode other than 2/0 is used, the pro logic function does not work and they
are muted.
(2-ch source) ... Muted in the case of multi-ch source
• AC3D2av outputs 2-ch input signals from LSt/RSt (SDA21).
• AC3D2av outputs signals using DOLBY 3 Stereo decoding operation with the auto input balance off
(with -3dB gain).
• DSP6#1 outputs LS/RS to RLdr/RRdr (SD612) and RC to RC (SD615, L only) respectively.
• DSP6#2 outputs the output signals of DSP6#1 to RL/RR (SD623) and RC (SD621, R only) through
the external RAM.
IC2
DIR5
DIGITAL
YSD917
IC3
A/D
ANALOG
AK5383
Reference CD ANALOG IN
VOLUME
PRE OUT
MAIN L (1kHz)
MAIN R (1kHz)
CENTER (1kHz/50Hz)
REAR CENTER (1kHz)
FRONT L (1kHz)
FRONT R (1kHz)
REAR L (1kHz/50Hz)
REAR R (1kHz/50Hz)
SW L (50Hz)
SW R (50Hz)
SW MONO (50Hz)
EFFECT OFF [Remote control code: 7A—9E (SET INC)]
• The input mode is fixed to Analog.
• The L/R signal is output through ANALOG MAIN BYPASS.
ANALOG
IC7
DSP6#1 YSS910
IC6
AC3D2av
YSS918
LSt/RSt
PCM THR
LSt/RSt
IC4
LS/RS
AC3Dav
YSS908 RC/ZERO
PRO LOGIC
IC5
: – 20dBV, Both ch
: MAX
: – ∞ dBV
: – ∞ dBV
: – 0.5dBV/ – 2.0dBV
: – ∞ dBV
: – ∞ dBV
: – ∞ dBV
: – 43.1dBV/ – 12.2dBV
: – 38.7dBV/ – 12.1dBV
: – ∞ dBV
: – ∞ dBV
: – 45.5dBV
IC11
IC8
DSP6#2 YSS910
RC
FILTER
DF1704
RC
RLdr/RRdr RL/RR
RL/RR
RC/ZERO RC
RL/RR
FILTER
DF1704
IC35 4M DRAM
CD ANALOG IN
VOLUME
PRE OUT
MAIN L (1kHz)
MAIN R (1kHz)
CENTER (1kHz)
REAR CENTER (1kHz/50Hz)
FRONT L (1kHz)
FRONT R (1kHz)
REAR L (1kHz/50Hz)
REAR R (1kHz/50Hz)
SW L (50Hz)
SW R (50Hz)
SW MONO (50Hz)
DSP BLOCK
DSP-AX1/RX-V1
D/A
RC
PCM1704
D/A
RL
PCM1704
D/A
RR
PCM1704
: – 20dBV, L ch only
: MAX
: – ∞ dBV
: – ∞ dBV
: – ∞ dBV
: – 42.6dBV/ – 13.6dBV
: – ∞ dBV
: – ∞ dBV
: – 3.4dBV/ – 5.3dBV
: – ∞ dBV/ – 39.2dBV
: – ∞ dBV
: – ∞ dBV
: – 45.5dBV
L
R
22