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A
B
SCHEMATIC DIAGRAMS-2 / PART-4
POWER AMP SECTION
1
BAAF-0008(2/2)
U001
AMPLIFIER PC BOARD
NOTE
THE COMPONENTS IDENTIFIED BY MARK
!
ARE CRITICAL FOR SAFETY.
REPLACE ONLY WITH PART NUMBER SPECIFIED.
BOLD VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
2
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 1/6 WATT UNLESS OTHERWISE NOTED.
THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.
EX)
PRINTING SIDE
"NM" AND "NC" ARE SHORT FOR "NOT MOUNTED" AND "NOT CONNECTED",
WHICH MEANS NO PART IS MOUNTED ON WIRING PATTERN OF PCB.
CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.
3
POWER TRANSISTOR LIST
TX-SR507
TX-SR577
TX-SR507 PP
(EXCEPT PP)
HT-R670
TX-SA507
MN130S
MN130S
2SC5198
Q6050-Q6056
Q6060-Q6066
MP130S
MN130S
2SA1941
TO BAAF-0008(1/2)
PART-3:J2
VOLH
SEC1H
GND_S1
+22V
4
IPROTECT
VPROTECT
Q6701
Q6702
Q6703
2SC2712-GR
2SA1163-BL
2SC2712-GR
5
R6701
22K
Q6713
2SA1163-BL
6
TO BAPS-0010
P6903B
R6902
PART-3:A8
1K
Q6707
2SC2712-GR
S1H+
4
1
+B1H_B1
RL6901
3
2
3
2
TO BAPS-0010
P6904B
RL6902
PART-3:A8
S1H-
4
1
-B1H_B1
7
10A 125V
1
AC_S1L+
S1L+
2
F6901
3
4
5
TP691
F6902
AC_S1L-
S1L-
10A 125V
TO BAAF-0008(1/2)
PART-3:J2
8
C
D
E
NOTE:
XY in "SCHEMATIC-a / PART-b:XY" indicates the target
location of the plug or socket, X=A to E/H/K, Y=1 to 4/5/8.
(1/4W)
FRONT L
+51.5V
10
+B1LL
+B1L
R6020
R5180
2.2
+1.1V
+BL
+50.5V
+1.0V
R5030
120K
-0.3V
R5000
C5010
R5020
0V
NFL
1K
47/50
330
-0.65V
R5230
120K
2.2K
R5040
IDLING
ADJ.
-0.4V
-46.5V
R6040
2K
-BL
-1.1V
10
(1/4W)
-B1LL
-B1L
-51.5V
R5190
10
(1/4W)
+B1RR
+51.5V
+B1R
FRONT R
R5181
+1.1V
+BR
+50.5V
+1.0V
R5031
120K
-0.3V
R5001
C5011
R5021
0V
NFR
330
1K
47/50
-0.65V
R5231
120K
2.2K
R5041
IDLING
ADJ.
-0.4V
-46.5V
R6041
2K
-BR
-1.1V
10
(1/4W)
-B1RR
-B1R
-51.5V
R5191
10
(1/4W)
CENTER
+B1CC
+51.5V
+B1C
R5182
+1.1V
+BC
+50.5V
+1.0V
R5032
120K
-0.3V
R5002
C5012
R5022
0V
NFC
1K
330
47/50
-0.65V
R5232
120K
2.2K
IDLING
R5042
ADJ.
-0.4V
-46.5V
R6042
2K
-BC
-1.1V
(1/4W)
-B1CC
10
-B1C
-51.5V
R5192
P6901A
GND
+B1H_B
D10XB60H
D6901
4
1
P6911B
JL6603A
D10XB60H
-B1H_B
D6903
4
1
P6902A
TX-SR507/577/HT-R670
TX-SA507
C6901/6902
8200uF/63V-MB
8200uF/63V-MA
F
G
P6901B
P6902B
+52.5V
(1/4W)
Q6030
2SC5171
IPRO
R6080
0.22
(1/4W)
Q6050
+0.6V
NM130S
Q6070
2SC2229-Y
R6140
56K
R6100
SPL
0.22(3W)
P6080
2
ID+
1
ID-
0.22
Q6060
(1/4W)
-0.6V
MP130S
R6090
R6170
FLVPRO
47K
R6180
FLVOLH
47K
D6000
KDS4148U
Q6040
2SA1930
-52.5V
+52.5V
2.2
(1/4W)
Q6031
2SC5171
IPRO
R6021
0.22
(1/4W)
Q6051
+0.6V
NM130S
Q6071
R6081
2SC2229-Y
R6141
56K
R6101
SPR
0.22(3W)
P6081
2
ID+
1
ID-
NM
0.22
(1/4W)
Q6061
-0.6V
MP130S
R6091
R6171
FRVPRO
47K
R6181
FRVOLH
47K
D6001
KDS4148U
Q6041
2SA1930
-52.5V
+52.5V
2.2
(1/4W)
Q6032
2SC5171
IPRO
R6022
0.22
(1/4W)
Q6052
+0.6V
NM130S
Q6072
R6082
2SC2229-Y
R6142
56K
R6102
SPC
0.22(3W)
P6082
2
ID+
1
ID-
NM
0.22
(1/4W)
Q6062
-0.6V
MP130S
R6092
R6172
CVPRO
47K
R6182
CVOLH
47K
D6002
KDS4148U
Q6042
2SA1930
-52.5V
BAAF-0008(1/2)
PART-3:K7
TO BATRM-0029
PART-7:F1
JL6600A
1
SPSBL
2
SPSL
SPL
3
4
SPC
SPR
5
6
SPSR
7
SPSBR
TO BATRM-0029
PART-7:A3
H
J
SURROUND L
10
(1/4W)
+51.5V
+52.5V
+B1SLL
+B1SL
R5183
2.2
(TX-SR577/HT-R670
(1/4W)
+1.1V
+BSL
Q6033
ONLY)
2SC5171
R6023
+50.5V
+1.0V
+0.6V
R5033
120K
-0.3V
R5003
C5013
R5023
0V
NFSL
1K
330
47/50
-0.65V
R5233
120K
2.2K
IDLING
R5043
ADJ.
-0.4V
-0.6V
-46.5V
R6043
2K
-BSL
-1.1V
Q6043
2SA1930
(1/4W)
10
-B1SLL
-B1SL
-51.5V
R5193
-52.5V
SURROUND R
10
(1/4W)
+B1SRR
+51.5V
+B1SR
+52.5V
R5184
2.2
(TX-SR577/HT-R670
(1/4W)
+1.1V
+BSR
Q6034
ONLY)
2SC5171
R6024
+50.5V
+1.0V
+0.6V
R5034
120K
-0.3V
R5004
C5014
R5024
0V
NFSR
1K
47/50
330
-0.65V
R5234
120K
2.2K
R5044
IDLING
ADJ.
-0.4V
-0.6V
-46.5V
R6044
2K
-BSR
-1.1V
Q6044
2SA1930
(1/4W)
-B1SRR
10
-B1SR
-51.5V
-52.5V
R5194
(1/4W)
SURROUND
+51.5V
+B1SBLL
10
+B1SBL
+52.5V
BACK L
R5185
2.2
(1/4W)
+1.1V
+BSBL
(TX-SR577/HT-R670
Q6035
2SC5171
ONLY)
R6025
+50.5V
SURROUND L
+1.0V
(TX-SR507/SA507
+0.6V
ONLY)
R5035
120K
-0.3V
R5005
C5015
R5025
0V
NFSBL
1K
330
47/50
-0.65V
R5235
120K
2.2K
R5045
IDLING
ADJ.
-0.4V
-0.6V
-46.5V
R6045
2K
-BSBL
-1.1V
Q6045
2SA1930
(1/4W)
-B1SBLL
10
-B1SBL
-51.5V
-52.5V
R5195
SURROUND
+51.5V
10
(1/4W)
+B1SBRR
+B1SBR
+52.5V
BACK R
R5186
2.2
(1/4W)
+1.1V
+BSBR
Q6036
(TX-SR577/HT-R670
2SC5171
ONLY)
R6026
+50.5V
SURROUND R
+1.0V
(TX-SR507/SA507
+0.6V
ONLY)
R5036
120K
-0.3V
R5006
C5016
R5026
0V
NFSBR
1K
330
R5236
47/50
-0.65V
120K
2.2K
IDLING
R5046
ADJ.
-0.4V
-0.6V
-46.5V
R6046
2K
-BSBR
-1.1V
Q6046
2SA1930
(1/4W)
-B1SBRR
10
-B1SBR
-51.5V
-52.5V
R5196
VOLH
IPRO
VPRO
TX-SR577
TX-SR507
TX-SA507
HT-R670
IDLING CURRENT ADJUSTMENT
R6133, R6134
NO
NO
YES
C6033, C6034
1. Wait for 4 - 6 minutes after power on. (Heat running)
J5521, J5522
YES
NO
2. Re-adjust the trimming resistors according to the following values.
YES
Channel
Front Left, Right
and Center
Surround Left
Surround Right
Surround Back Left
Surround Back Right
TX-SR507/SA507/SR577/HT-R670
K
L
IPRO
0.22
(1/4W)
Q6053
NM130S
Q6073
R6083
2SC2229-Y
R6143
56K
R6103
SPSL
0.22(3W)
P6083
2
ID+
1
ID-
NM
0.22
Q6063
(1/4W)
MP130S
R6093
R6173
SLVPRO
47K
R6183
SLVOLH
47K
D6003
KDS4148U
IPRO
0.22
(1/4W)
Q6054
NM130S
Q6074
R6084
2SC2229-Y
R6144
56K
R6104
SPSR
0.22(3W)
P6084
2
ID+
1
ID-
NM
NPLG-2P29
0.22
(1/4W)
Q6064
MP130S
R6094
R6174
SRVPRO
47K
R6184
SRVOLH
47K
D6004
KDS4148U
IPRO
0.22
(1/4W)
Q6055
NM130S
Q6075
R6085
2SC2229-Y
R6145
56K
R6105
SPSBL
0.22(3W)
P6085
2
ID+
1
ID-
NM
0.22
(1/4W)
Q6065
MP130S
R6095
R6175
SBLVPRO
47K
R6185
SBLVOLH
47K
D6005
KDS4148U
IPRO
0.22
(1/4W)
Q6056
NM130S
Q6076
R6086
2SC2229-Y
R6146
56K
R6106
SPSBR
0.22(3W)
P6086
2
ID+
1
ID-
NM
0.22
(1/4W)
Q6066
MP130S
R6096
R6176
SBRVPRO
47K
R6186
SBRVOLH
47K
D6006
KDS4148U
Adjustment point
Measured value
Re-adjustment value
In case below 9 mV
9 mV
R6040, R6041
and R6042
In case 9 - 11 mV
No re-adjustment
In case over 11mV
11 mV
R6043, R6044,
In case below 4 mV
4 mV
In case
4 - 6 mV
No re-adjustment
R6045 and R6046
In case over 6 mV
6 mV
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