TX-SR506
A
BLOCK DIAGRAMS-1
AUDIO SECTION
1
SETUP MIC
AUX IN
(FRONT IN)
2
TAPE OUT
TAPE IN
CABLE/SAT IN
VCR/DVR OUT
3
VCR/DVR IN
FRONT
CENTER
DVD
(MULTI IN)
4
DIGITAL IN
5
SUBWOOFER
SURROUND
SURROUND BACK
COAXIAL
(CBL/SAT)
(VCR/DVR)
OPTICAL
IN1
IN2
HDMI
IN3
OUT
(DVD)
L
R
L
CD IN
R
L
R
L
R
L
R
L
R
L
R
L
R
L
R
L
R
1
2
1
2
(CD)
Refer to
BLOCK DIAGRAMS-2
MIC AMP
MICDET
NC
BCDEFGH
TUNER UNIT
LPF
Q403
NJM45800-D
Q5501
R2S15211FP
TONE
TONE
SR
27
26
22
SBL
23
LPF
Q404
NJM45800-D
21
SBR
FL
19
20
+
FR
17
18
C
7
6
+++++
SL
14
15
SR
12
11
SW
9
10
SBL
4
5
+
SBR
2
1
+
20
62
63
64
1
61
60
54
Q5606
Q5605
Q5607
Q5600
Q5604
Q5603
Q5602
Q5601
Q5609 Q5608NC
NC
NC
NC
Q5610
NC
NC
NC
NC
ES29LV160ET-70TG
FLASH MEMORY
(DSP ROM)
117
116
115
113
139
141
120
40
57
MAIN L
58
63
64
65
66
61
62
59
60
55
56
53
54
51
52
49
50
47
48
45
46
71
72
69
70
67
68
MAIN R
SUB R
SUB L
36
37
74
INVERTING
INVERTING
35
73
25k25k 25k25k25k25k25k25k25k25k25k25k25k
34
75
30
78
33
77
32
76
31
80
NC
29
25k
C
37
36
CS42518
79
28
Q402
NJM45800-D
Q301
LPF
25k25k
SW
34
35
REC R
REC L
38
39
LPF
Q401
NJM45800-D
FL
32
33
FR
16
15
14
-
13
-
49
43
42
44
46
45
48
47
50
2ch ADC
DIR
31
30
SELECTOR / TONE / VOLUME
SL
28
29
8ch DAC
AUDIO ANALOG
FRONT L
FRONT R
AUDIO DIGITAL
NC
Q282
Q201
D788E001BRFP266
DSP
PREOUT
SUBWOOFER
L
ZONE 2
LINE OUT
R
Q281
M12L64164A-7TG
SDRAM
POWER AMPLIFIER
+29dB
+29dB
+29dB
+29dB
+29dB
+29dB
+29dB
Z2MUT
Q6602
AMUT
FRL
SBMUT
SBRL
CSRL
RI
INTERFACE
M30626FHPFP
MAIN MICROPROCESSOR
Z2RL
Q6601
Q6603
Q6604
Q701
RL6602
RL6603
RL6604
RL6607
RL6600
PHONES
L
FRONT
SPEAKERS
R
CENTER
SPEAKER
L
SURROUND
SPEAKERS
R
L
SURROUND BACK
SPEAKERS
R
L
ZONE 2
SPEAKERS
R
RI
TX-SR506
A
SCHEMATIC DIAGRAMS-1 (SD-1)
AUDIO INPUT SECTION
MICROPROCESSOR PCB
To NADG-
9457 SD-3 : A3
D5704
221J
C5704
D5714
D5705
C5705 221J
D5715
D5706
C5706 221J
D5716
P304
1
P5505
R5500
P7900
R5501
330
R5502
330
R5503
330
R5504
330
R5505
2.2K
R5506
2.2K
R5507
330
R5508
330
330
R5541
C5501
220K
221J
C5502
R5542
220K
221J
R5543
C5503
221K
220K
R5544
C5504
220K
221K
R5545
C5505
220K
NC
R5546
C5506
220K
NC
R5547
C5507
220K
221J
R5548
C5508
220K
221J
RI
NC
P7901
R
TUNER
L
P7902
R
CD IN
L
2
R
OUT
L
TAPE
R
IN
L
3
P7904
P7905
P7906
R5513
R5514
R5515
2.2K
R5516
2.2K
R5517
330
R5518
330
R5519
330
R5520
330
R5521
330
R5522
330
R5523
330
R5524
330
R5525
330
R5526
330
C5513
R5553
330
330
220K
R5554
220K
R5555
220K
R5556
220K
R5557
220K
R5558
220K
R5559
220K
R5560
220K
R5561
220K
R5562
220K
R5563
220K
R5564
220K
R5565
220K
R5566
220K
221J
C5514
221J
C5515
C5516
C5517
221J
C5518
221J
C5519
221K
C5520
221K
C5521
221J
C5522
221J
C5523
221J
C5524
221K
C5525
221J
C5526
221J
NC
NC
CBL/SAT IN
R
L
R
OUT
L
VCR/DVR
R
4
IN
L
R
FRONT
L
R
SURROUND
L
DVD
(MULTI IN)
CENTER
5
SUBWOOFER
LIST
D
SURROUND
BACK
R
L
BCDEFGH
AUDIO ANALOG SIGNAL
VOLH
To NAAF-9419(2/2)
SEC1H
PROTECT
HT-R518 HT-R560 TX-SR576TX-SR506
Yes
None
Yes
None
None
Yes
None Yes YesYesYes Yes
0
None
2.2K
0
None
15 (2W) 15 (2W) 15 (2W)None None
TA20
P6991
NC
D5717
D5707
1SS352
D5708
D5718
1SS352
AMPLIFIER PCB
SD-2 : B3
None
Yes
None
None
00NoneNone None
2.2K 2.2K2.2K2.2K
SP TERMINAL PCB
To NATRM-9468
R5567
C5527
221J
2.2K
C5528
R5568
221J
2.2K
C5529
R5569
R5570
C5530
1SS352
C5531
R5571
221J
C5532
R5572
R5573
C5533
C5534
R5574
1SS352
FRONT L
FRONT R
Yes
Yes
0None None None
TA20NoneNone None
5
4
103J
C6086
3
2
1
SD-5 : H3
C5707
103K
NC
JL6604A
R5527
330
R5528
330
R5529
R5530
R5531
100
R5532
R5533
R5534
C5708
103K
C6087
SBR
SBL
SR
SL
HT-R667
HT-R960
None
Yes
None
None
None
0
15 (2W)
None
P6602
(Lever type)
GND_E
102J
C6076
103J
102J
C6077
R
P7907
R
ZONE 2
LINE OUT
L
NC
P7908
PRE OUT
SUBWOOFER
NC
To NAAF-9419(2/2)
R
L
C
SD-2 : E4
None
YesYes
None
None220K
0000
SPEAKERS B
L
LIST
C
B
FRONT
LIST
NC
JL5502A
1
2345678
XM_L
XM_R
iPOD_R
iPOD_L
220K
R5580
R5581
220K
R5582
R5549
R5550
GND_A
SIRIUS_L
220K
220K
R5583
SIRIUS_R
220K
220K
+15V
9
-15V
P303
1
RI
R5575
220K
R5576
220K
R5577
47K
R5578
47K
R5579
220K
R5587 10K
R5588 10K
To NADG-9457
SD-3 : A3
456
2
TU_L
3
GND_TU
9
7
8
101112
V3_L
V3_R
GND_A
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
R5589
MIC OUT
65
INRB/RECR2
INL8
INR8
INL7
INR7
INL6
INR6
INL5
INR5
INL4
INR4
INL3
INR3
INL2
INR2
INL1
INR1
AVEE
CLOCK
DATA
40
1K
LATD
RATD
DAC_SR
67
68
66
INLB/RECL2
INR10/RECR4
64 : INL9
63 : INR9
62 : INLA/RECL1
61 : INRA/RECR1
SELECTOR / TONE /
41 : DGND
SUBR
MONO39SUBL
37
38
47/25
C5566
TU_R
NOTE
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030- 3pF 330- 33pF 331- 330pF 333- 0.033uF
ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX) PRINTING SIDE
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
131415
DAC_SL
DAC_SBL
DAC_SBR
C5573
C5572
C5575
47/50
47/50
47/50
69
71
70
RECR3
INL11/RECL5
INL10/RECL4
INR11/RECR5
Q5501
R2S15211FP
VOLUME
(Botom view)
ADCR
ADCL35FRIN234FLIN2
36
47/25
C5565
R5689
R5690
SBZ2_MUTE
C557447/50
C557147/50
C557047/50
C557647/50
74
72
73
75
CIN1
FLIN1
FRIN1
RECL3
1-OUT : 2
AGND : 3
BASS_L1 : 21
BASS_L2 : 22
TRE_L : 23
AVCC : 24
SLIN2
CIN2
SRIN2
SWIN2
31
33
32
30
Q5503A
C5709
47/25
R5590
220K
C5590 330J
R5594
R5595
C5591 330J
220K
R5598
C5710
47/25
Q5503B
DOWN MIX.
To NADG-9457
P302
1
23456
DAC_FL
DAC_FR
C5569
47/50
76
79
78
77
80
SLIN1
SRIN1
SWIN1
SBLIN1
2-OUT
2-C
1-C : 1
3-C
3-OUT
AGND
4-OUT
4-C
5-C
5-OUT
AGND
6-OUT
6-C
FLC
FLOUT
AGND
FROUT
FRC
SBRIN2
TRE_R
SBLIN2
BASS_R225BASS_R1
27
26
29
28
C5564 223J
C5563 823J
Q5503 : NJM4580
4
1
10K
10K
10K
10K
7
8
SD-3 : A2
-15VA
DAC_C
GND_A
DAC_SW
220K
R5691
220K
R5692
220K
R5693
220K
R5694
R5695
C5551 47/25
1
2
SBRIN1
3
4
C5552
5
C5553
6
7
8
9
10
C5554
C5555
11
12
13
14
C5556
15
16
C5557
17
18
19
C5558
20
21
C5559
C5560 823J
22
23
C5561
24
474J
C5562
C5674
1.8K
R5586
C5675
-6.8V
3
R5591
2
10K
R5592
470
R5596
470
5
R5599
6
10K
220K
R5597
789
+15VA
47/25
47/25
47/25
47/25
47/25
47/25
47/25
474J
223J
+6.8V
470/16
470/16
R5593
1.2K
1.2K
!
GND_D
VOL_DATA
R5585
10
111213
VOL_CLK
PROTECT
1.8K
D5671
UDZ6.2C
D5672
UDZ6.2C
-14.8V
DAC_FR
DAC_FL
+14.8V
SEC1H
SBR_OUT
SBL_OUT
C_OUT
SW_OUT1
SR_OUT
SL_OUT
R_OUT
L_OUT
R5674
68
D5673
1SS133
R5675
68
D5674
1SS133
VOLH
(1W)
(1W)
14
AMUT
15
Z2_MUT
R5684
68
R5683
68
22
R5667
C5667
C5666
R5666
22
(1W)
(1W)
220/25
220/25
+15V
C5630
47/50
Subwoofer
+15V
D5709
D5719
-15V
-14.8V
R5630
220
R5631
+14.8V
3
C5672
RL1N4003
C5673
RL1N4003
3O2
Q5630 : NJM4580
221J
C5631
47K
15K
R5632
Q5670
78M15
1
I
O
G
2
C5670
220/25
C5671
220/25
1
G
I
Q5671
79M15
LIST
LIST
J5246
R5677
-23.5V
3
2
5
6
R5633
10/50
10/50
4
Q5630A
R5634
C5632
103J
1.2K
Q5630B
8
LIST
R5678
+22V
R5688
R5686
R5672
10
R5670
10
R5673
27
R5671
27
R5685
R5687
10K
NC
NC
NC
NC
1
7
J5247
2W
2W
2W
2W
LIST
SW_OUT
SBR_OUT
SBL_OUT
SR_OUT
SL_OUT
R_OUT
L_OUT
C_OUT
Z2_R
Z2_L
+22V
-22V
R5680
R5681
R5682
MUTING
D
LIST
C5601
C5602
47/50
<Note>
1. NC = No mount of parts.
2. SD-x : XY is short for Schematic Diagrams-x and each sockets location, X = A to H, Y = 1 to 5.
+15V
LIST
220K
LIST
LIST
R5813
R5610
C5600
270
100/25
220K
R5600
220K
R5601
R5611
47/50
LIST
R5612
LIST
220K
R5602
220K
R5603
R5613
C5603
2.2K
47/50
R5614
C5604
2.2K
47/50
220K
R5604
220K
R5605
C5605
47/50
2.2K
R5615
R5616
C5606
2.2K
47/50
220K
R5606
220K
R5607
C5607
2.2K
47/50
R5617
2.2K
47/50
C5608
R5618
220K
R5608
220K
R5609
47/50
2.2K
C5609
R5619
A
D9001
D9002
C9003
1000/35
D9003D9004
C9004
1000/35
D9001 -6004 : RL1N4003
+3.7V
R5814
Q5600
Q5601
Q5602
Q5603
Q5604
Q5605
Q5606
Q5607
Q5608
Q5609
LIST
LIST
C9001
R5621
LIST
R5622
LIST
R5623
R5624
R5625
R5626
R5660
2.2
334J
R5661
2.2
P301
R5620
R5627
NC
Z2_MUTE
SB_MUTE
Q5600 - 5610 : RN1441
100
Q5610
Q5611
Q5612
Q5613
0
0
Q5614
Q5615
0
Q5616
0
Q5617
0
GND_S1
+22V
1W
S1L+
GND
S1L-
1W
NC
NC
NC
NC
NC
NC
NC
NC
SD-2 : B3
SD-2 : B5
To NAAF-9419(2/2)
U01
NAAF-9419(1/2)
AMPLIFIER PC BOARD
Refer to following table about the parts displayed by mark " LIST ".
TA20 : Jumper wire L=20 mm
MODEL No.
A
B
C
D
R5680, 5682 220K None
R5813
R5814
R5611, 5612
R5621, 5622
R5677, 5678
J5246, 5247
Q5700
D5700
R5668
C5700
RL5700