Bypass - Yamaha DSP-AX1/RX-V1 Service Manual

DSP-AX1/RX-V1

5. BYPASS

Only PCM and analog modes are used for input signals. The bypassing operation is used according to
the menu setting. There are two sub-menu items (DECODER, DSP). This menu is useful when locat-
ing the faulty part by bypassing the decoder LSI and DSP6.
5. BYPASS
DECODER
DECODER [Remote control code: 7A—9F (SET DEC)]
(2-ch source) ... Muted in the case of multi-ch source
• AC3D2av, AC3Dav and DSP6#1 are muted.
• DIR5 or A/D output (SDAT) signals are input directly to DSP6#2 and output to L/R (SD620), C/RC
(SD621), RL/RR (SD623), FL/FR (SD622) and SWL/SWR (SD624).
Reference CD ANALOG IN
VOLUME
PRE OUT
MAIN L (1kHz)
MAIN R (1kHz)
CENTER (1kHz)
REAR CENTER (1kHz)
FRONT L (1kHz)
FRONT R (1kHz)
IC2
DIR5
DIGITAL
YSD917
IC3
A/D
ANALOG
AK5383
DSP [Remote control code: – – – – ]
(2-ch source) ... Muted in the case of multi-ch source
• AC3D2av, AC3Dav, DSP6#1 and DSP6#2 are muted.
• The DIR5 or A/D output (SDAT) signal is input directly to DAC and L/R is reproduced.
Reference CD ANALOG IN
VOLUME
PRE OUT
MAIN L (1kHz)
MAIN R (1kHz)
CENTER (1kHz)
REAR CENTER (1kHz)
FRONT L (1kHz)
FRONT R (1kHz)
DIR5
DIGITAL
YSD917
ANALOG
AK5383
23
5. BYPASS
DSP
: – 20dBV, Both ch
: MAX
: – 7.5dBV REAR L (1kHz)
REAR R (1kHz)
: – 7.5dBV
: – 7.2dBV SW L (1kHz/50Hz)
SW R (1kHz/50Hz)
: – 7.4dBV
: – 7.5dBV SW MONO (1kHz/50Hz) : + 13.8dBV/ + 13.5dBV
: – 7.4dBV
L/R (DECODER BYPASS)
IC4
: – 20dBV, Both ch
: MAX
: – 3.4dBV REAR L (1kHz)
REAR R (1kHz)
: – 3.4dBV
: – ∞ dBV
SW L (50Hz)
: – ∞ dBV
SW R (50Hz)
: – ∞ dBV
SW MONO (50Hz)
: – ∞ dBV
L/R (DECODER BYPASS)
IC2
IC3
IC4
A/D
: – 1.4dBV
: – 1.3dBV
: + 7.7dBV/ + 7.5dBV
: + 7.7dBV/ + 7.5dBV
L/R
FILTER
DF1704
IC57
IC8
DSP6#2 YSS910
C/RC
FILTER
DF1704
FL/FR
FILTER
DF1704
RL/RR
FILTER
DF1704
SWL/SWR
FILTER
DF1704
: – ∞ dBV
: – ∞ dBV
: – ∞ dBV
: – ∞ dBV
: – ∞ dBV
L/R
DF1704
IC57
D/A
L
PCM1704
D/A
R
PCM1704
D/A
C
PCM1704
D/A
RC
PCM1704
D/A
FL
PCM1704
D/A
FR
PCM1704
D/A
RL
PCM1704
D/A
RR
PCM1704
D/A
SWL
PCM1704
D/A
SWR
PCM1704
D/A
L
PCM1704
FILTER
D/A
R
PCM1704