Yamaha RX-A4A - BLOCK DIAGRAMS; AUDIO Section

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54
RX-A4A
SPRY_ZFP
AD_MZ1
VOL_SCK
䠖Clock Input
VOL_MOSI
䠖Data Input
"Low"
䠖chip select
AD_MZ
AD_Z3
IN1 SPRY_SB
Multi2-2
+29.03dB
Main
Tuner IN2
Sub1
(TU-04/DAB)
Sub2
+35.56dB
PHONO IN3 Main
Multi2-3
Main
AUDIO2 IN4
Sub1
AD_Z2
AUDIO1(TV)
Sub2
AUDIO2
AUDIO3 IN5 Main
AUDIO3
Front Vol
IN6 (L/Rch)
ForComponent
M_Bypass
Front
IN7
Sub1_Bypass
typ:28.3Vrms(Vol:+16.5dB)
Sub2_Bypass
+32dB䡚-95dB,
MT_F_MI +29.03dBSPRY_F
Opt / Coax SPDIF
Multi1-1
-INF / 0.5dB st ep
IN8
Multi2-1
Multi3-1
Mute
V-AUX(Ext.MIC)
MT_EX3_MI
Center Vol
(Rch)
YPAO Mic MUTE for13chPro cessingmodel (EX4)
M_Bypass
FW/Top Middle…TBD
AD_MZ(from FUNC(1))
Sub1_Bypass
SPRY_EX4(Ready)
Sub2_Bypass
+32dB䡚-95dB,
DA_FL/FR
Multi1-2
-INF / 0.5dB st ep
AD_Z2/MIC(from FUNC(1))
Multi2-2
Mute
SubwooferVol Center
(Lch) typ:28.3Vrms(Vol:+16.5dB)
MT_MZ +29.03dBSPRY_C
M_Bypass
Sub1_Bypass
Sub2_Bypass
+32dB䡚-95dB,
Surround
DA_SW1
Multi1-2
-INF / 0.5dB st ep typ:28.3Vrms(Vol:+16.5dB)
Multi2-2
MT_MZ +29.03dBSPRY_SR
DA_CEN
Mute
Surround Vol
DA_FL/FR
(L/Rch)
M_Bypass
Center
DA_CEN
Sub1_Bypass
Sub2_Bypass
+32dB䡚-95dB,
Multi1-3
-INF / 0.5dB st ep
Surround
DA_SL/SR
DA_SL/SR
Multi2-3
Mute
Surr.Back
Surr.BackVol
(L/Rch)
Subwoofer1
DA_SW1
M_Bypass
Sub1_Bypass
Subwoofer2
DA_SW2
Sub2_Bypass
+32dB䡚-95dB,
Multi1-4
-INF / 0.5dB st ep
Multi2-4
Mute
MUTE
F.Pres
DA_FPL/FPR
MUTE IC606
BD34703KS2 #1 (1/3)
R.Pres
DA_RPL/RPR
EX
DA_EXL/EXR
DA_Z2/DA_MIC
DA_Z3
VOL_SCK 䐠䠖Clock Input
VOL_MOSI 䐠䠖Data Input
"High"
䠖chip select
IN1
Multi2-2
Main
IN2
Sub1
Sub2
IN3 Main
Multi2-3
Main
IN4
Sub1
Sub2
IN5 Main
Front Vol
IN6 (L/Rch)
M_Bypass
MT_HP
AD_MZ1 IN7
Sub1_Bypass
MT_N_HP
ForDiaguse only
Sub2_Bypass
+32dB䡚-95dB,
Multi1-1
-INF / 0.5dB st ep
MIC-MIXIN8
Multi2-1
HeadPhoneJack
Multi3-1
100Ω typ:0.6Vrms@8Ω / Vol:+16.5dB
Mute
+17.76dB
DA_FPL/FPR
Center Vol
(Rch) Front PreOut
MUTE typ:1Vrms(Vol:+16.5dB)
DA_Z2L/Z2R +0dB MT_MZ
Sub1_Bypass
Sub2_Bypass
+32dB䡚-95dB,
Multi1-2
-INF / 0.5dB st ep Center PreOut
Multi2-2
typ:1Vrms(Vol:+16.5dB)
Mute
SubwooferVol MT_MZ
(Lch)
Surround PreOut
Sub1_Bypass
typ:1Vrms(Vol:+16.5dB)
Sub2_Bypass
+32dB䡚-95dB,
MT_MZ
DA_SW2
Multi1-2
-INF / 0.5dB st ep
Multi2-2
Mute
Surr.BackPreOut
Surround Vol typ:1Vrms(Vol:+16.5dB)
(L/Rch) +0dB MT_SB_PO
DA_SBL/SBR
M_Bypass
Sub1_Bypass
Sub2_Bypass
+32dB䡚-95dB,
Multi1-3
-INF / 0.5dB st ep
Multi2-3
Mute
MT_MZ
typ:1Vrms(Vol:+16.5dB)
Surr.BackVol
DA_RPL/RPR (L/Rch)
M_Bypass
Sub1_Bypass
Sub2_Bypass
+32dB䡚-95dB,
Multi1-4
-INF / 0.5dB st ep MT_MZ
typ:1Vrms(Vol:+16.5dB)
DA_Z3L/Z3R
Multi2-4
Mute
F.Pres PreOut
MUTE
MT_MZ
typ:1Vrms(Vol:+16.5dB)
R.Pres PreOut
MUTE IC607
BD34703KS2 #2 (2/3)
MT_MZtyp:1Vrms (Vol:+16.5dB)
Zone2 PreOut
VOL_SCK 䐠䠖Clock Input
Typ:1Vrms (Vol +10dB)
VOL_MOSI 䐠䠖Data Input
MT_Z2
"LOW"
䠖chip select
DA_Z2L/Z2R
IN1
Multi2-2
Main
DA_RPL/RPR IN2
Sub1
Sub2
DA_Z3L/Z3R
IN3 Main
Multi2-3
Z3_SW
Main
IN4
Sub1
Z2_SW
Sub2
IN5 Main
Front Vol
IN6 (L/Rch)
M_Bypass
IN7
Sub1_Bypass
Sub2_Bypass
+32dB䡚-95dB,
Multi1-1
-INF / 0.5dB st ep
EX PreOut
MIC-MIXIN8
Multi2-1
Multi3-1
MT_MZ
Mute
AD_MZ1 Center Vol
ForDiaguse only (Rch)
MUTE
M_Bypass
Subwoofer2PreOut䐟䚷(A11)
Sub1_Bypass
Sub2_Bypass
+32dB䡚-95dB,
MT_Z2Zone2 SubPreOut
Multi1-2
-INF / 0.5dB st ep typ:1Vrms(Vol:+16.5dB)
Multi2-2
Mute
SubwooferVol
(Lch)
M_Bypass
Subwoofer2PreOut䐠䚷(A11)
Sub1_Bypass
Sub2_Bypass
+32dB䡚-95dB,
Zone3Sub PreOut
Multi1-2
-INF / 0.5dB st ep MT_Z3typ:1Vrms (Vol:+16.5dB)
Multi2-2
Mute
Surround Vol
(L/Rch)
DA_SBL/SBR
M_Bypass
Sub1_By
pass
Sub2_Bypass
+32dB䡚-95dB,
Multi1-3
-INF / 0.5dB st ep
Multi2-3
Mute
Surr.BackVol
(L/Rch)
DA_EXL/EXR
M_Bypass
Sub1_Bypass
Sub2_Bypass
+32dB䡚-95dB,
Multi1-4
-INF / 0.5dB st ep
Multi2-4
Mute
MUTE
MUTE
IC608
BD34703KS2 #3 (3/3)
ADC OUT
SUB OUT
FIN3
Multi3-1
Logic
䊹
䊹
M_Bypass
䊹
䊹
Sub1_Bypass
䊹
䊹
Sub2_Bypass
REC OUT
IN16
S_DSP
Multi1-1
L
IN12
FIN2
Multi2-1
R
L
IN15
C/SW_DS
P
Multi1-2
R
L
IN11
C/SWIN2
Multi2-2
R
ADC OUT
SUB OUT
REC OUT
IN16
F_DSP
Multi1-1
IN14
S_DSP
Multi1-3
IN10
SIN2
Multi2-3
IN13
SB_DSP
Multi1-4
IN9
SBIN2
Multi2-4
Logic
䊹
䊹
M_Bypass
L
IN11
C/SWIN2
Multi2-2
R
䊹
䊹
Sub1_Bypass
䊹
䊹
Sub2_Bypass
IN12
FIN2
Multi2-1
FIN3
Multi3-1
L
IN15
C/SW_DS
P
Multi1-2
R
IN14
S_DSP
Multi1-3
IN10
SIN2
Multi2-3
IN13
SB_DSP
Multi1-4
IN9
SBIN2
Multi2-4
Logic
䊹
䊹
Sub1_Bypass
䊹
䊹
Sub2_Bypass
ADC OUT
SUB OUT
L
REC OUT
䊹
䊹
M_Bypass
R
IN16
F_DSP
Multi1-1
IN12
FIN2
Multi2-1
FIN3
Multi3-1
L
IN15
C/SW_DS
P
Multi1-2
R
IN9
SBIN2
Multi2-4
L
IN11
C/SWIN2
Multi2-2
R
IN14
S_DSP
Multi1-3
IN10
SIN2
Multi2-3
IN13
SB_DSP
Multi1-4
ADC-ATT
0/ -6/-6.5/-7.5/-9/-12dB
Volume2(SUBOUT)
+7.5dB㹼 -87.5dB, Mute
(0.5dB step)
+
+
Connector
Mute
Mute
+
ADC-ATT
0/ -6/-6.5/-7.5/-9/-12dB
Volume2 (SUB OUT)
+7.5dB㹼 -87.5dB,Mute
(0.5dB step)
+
+
0
0
L
L
[
[
*
*
D
D
L
L
Q
Q




G
G
%
%


Mute
+
+
Mute
+
+
+
Mute
+
+
Mute
+
+
Mute
+
Mute
+
+
Mute
+
Mute
Wire
+
Mute
Surr.Back (Pre)
+
Mute
Center(SP)
Surround (SP)
+
+
+
+
+
+
+
+
Logic
Inversion
Inversion
+
ADC-ATT
0/ -6/-6.5/-7.5/-9/-12dB
Volume2 (SUB OUT)
+7.5dB㹼 -87.5dB,Mute
(0.5dB step)
+
0
0
L
L
[
[
*
*
D
D
L
L
Q
Q




G
G
%
%


Mute
Ext.F
Mute
+
[EX1 SP]
[EX2SP]
Mute
Surr.Back
F
C
SW1
S
SB/EX2
FP Pre
SW2
EX1
RP Pre
EX3
Z3 Pre
SB Pre
EX Pre
Mute
+
+
Mute
+
+
Zone2 (Pre)
Wire
3
4.5
9, 10
8
6.7
11
12, 13
14, 15
OPAMP*2
཯㌿ᅇ㊰
BTL䝸䝺䞊
Center (SP&Pre)
Subwoofer1 (Pre)
Surround (RX: SP&Pre)
1, 2
+
+
+
+
+
Subwoofer2(Pre)
+
+
+
+
SPᇶᯈ
+
EX1
FRONT
CENTER
SURROUND
Connector
DA_FL/FR
MT_SB_MI
+
Mute
DA_FPL/FPR
AUDIO4
AUDIO4
EXSP route
Z2 Pre
Zone2
F.Pres
R.Pres
F.Pres/Zone2/Bi-Amp
EX2
Surr.Back/Zone2
Surr.Back/Bi-Amp /F.Pres/Zone2 (SP)
F.Pres /Surr.Back /Zone2
R.Pres /Zone2
R.Pres
Surr.Back /Bi-Amp/F.Pres /Zone2 (SP)
Surr.Back (Pre)
Surr.Back /Bi-Amp/F.Pres /Zone2 (SP)
Front(SP&Pre&HP)
Zone2
F.Pres/Surr.Back/Zone2
Front (SP)
Front(SP&Pre&HP)
Surround
Center
Subwoofer1
Subwoofer2
F.Pres
R.Pres
Subwoofer1 PreOut䐟䚷(A4A)
Subwoofer1 PreOut䐠䚷(A4A)
FPL/FPR
• See page 94 
CIRCUIT DIAGRAM
FUNCTION (3)
•See page 96 
CIRCUIT DIAGRAM
OPERATION (5)
• See page 79–86 
CIRCUIT DIAGRAM
DIGITAL
• See page 93 
CIRCUIT DIAGRAM
FUNCTION (2)
• See page 92 
CIRCUIT DIAGRAM
FUNCTION (1)
•See page 99 
CIRCUIT DIAGRAM
AMPPOWER
n
BLOCK DIAGRAMS / ブロック図
AUDIO Section Block Diagram