HT-R550
SCHEMATIC DIAGRAMS-1
AUDIO INPUT SECTION
HT-R550
SW_OUT
+12VTRG
+22V
GND_TRG
Z2_R
Z2_L
C_OUT
L_OUT
R_OUT
SL_OUT
SR_OUT
SBL_OUT
SBR_OUT
-12V
+12V
PROTECT
SEC1H
VOLH
IR
+5.6IR
GND_IR
TZ2
Z2MUT
SB/PREMUTE
GND_E
SBR
SBL
SR
SL
R
L
C
GND_S1
GND
+22V
-22V
S1L+
S1L-
GND_E
NC
PREOUT RELAY
Subwoofer
+/-12V Supply
SUBWOOFER
J5063
NC
C5603
47/50
C5601
47/50
C5602
47/50
C6076
102J
R5631 47K
R5630
220
R5632
15K
R5633
1.2K
R5634
10K
Q5630A
NJM4580
3
2
1
4
Q5630B
NJM4580
5
6
8
7
D9001
D9003
D9004
C5671
10/50
R5814
0
R5813
NC
R5621
0
R5622
0
R5623
0
R5624
0
R5613
2.2K
R5612
2.2K
R5611
2.2K
C5608
47/50
R5608
220K
R5616
2.2K
R5606
220K
R5607
220K
R5615
2.2K
C5605
47/50
R5614
2.2K
C5604
47/50
R5604
220K
R5605
220K
R5602
220K
R5603
220K
R5600
220K
R5601
220K
R5618
2.2K
R5609
220K
P6221
22
24
21
2
10
1
C6226
104Z
R6226
100K
R6222
10K
R6223
10K
R6224
3.3K
C6221
223K
C6227
104Z
R6227
3.3
D6222
D6221
Q6223
RN1402
3
1
2
Q6222
RN1402
3
1
2
R6228
1K
Q6227
RN1402
1
3
2
Q6226
2SB1068-U
3
1
2
R5617
2.2K
R5627
0
C5606
47/50
C5607
47/50
R5610
270
R5620
100
R5625
0
R5626
0
RL5700
8
10
5
3
12
1
4
9
C5631
221J
R5619
2.2K
C5609
47/50
Q5700
RN1402
D5700
1SS133
R5668
22
R6221
100
Q6221
PC817X
C6229
104Z
C5700
103Z
C5666
220/25
R5667
22
R5666
22
P301
1
2
3
4
5
6
C5667
220/25
C5670
10/50
C5672
220/25
C5673
220/25
C5630
47/50
R5571
JL6604A
1
2
3
4
C5600
100/25
C6222
100/25
+
C5632 103J
P7908
Q5671
79M12
3
O
2
I
1
G
Q5670
78M12
3
O
2
G
1
I
D5717
D5708
D5718
D5707
C9003
1000/35
C9004
1000/35
R5673
2W
68
R5671
2W
68
D9002
C9001
334J
P6991
P6002
L
R
C6077
102J
C5531
R5531
100
R5672
2W
47
R5670
2W
47
R5660
1W
2.2
R5661
1W
2.2
Q5600
RN1441
Q5601
RN1441
Q5603
RN1441
Q5602
RN1441
Q5604
RN1441
Q5605
RN1441
Q5606
RN1441
Q5607
RN1441
Q5610
RN1441
Q5611
NC
Q5612
NC
Q5613
NC
Q5614
NC
Q5615
NC
Q5616 NC
Q5617 NC
Q5609
RN1441
Q5608
RN1441
R5680
220K
R5681
220K
R5682
220K
C6087
103J
C6086
103J
C5708
223K
C5707
NC
To NAAF-8779(2/2)
(SD-2 : A3)
To NAAF-8779(2/2)
(SD-2 : D4)
To NAVD-9178(2/2)
(SD-6 : E2)
FRONT
SPEAKERS B
To NAAF-8779(2/2)
(SD-2 : B5)
D9001 - 9004 : RL1N4003
NC
NC
PREOUT
NAAF-8779(1/2)
U01
AMPLIFIER PC BOARD
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
FRONT Lch
FRONT Rch
R5677
15(2W)
R5678
15(2W)
-12V
+12V
A
1
2
3
4
5
B
C
D
E
F
G
H
