SCHEMATIC DIAGRAMS - 6
AMP (VOLTAGE AMP) SECTION
TX-NR708, TX-NA708, HT-RC270, DTR-40.2
A
1
2
3
4
5
B
C
D
E
F
G
H
6
7
8
I
J
K
-B1C
+BC
+B1C
-B1R
+BR
+B1R
-B1SR
+BSR
+B1SR
-B1SBR
+B1SBR
-B1SBL
+BSBL
+B1SBL
-B1SL
+BSL
+B1SL
-B1L
+BL
+B1L
+BSBR
+B1C
-B1C
+BC2
-BC2
NFC
+BC
TRIMC
TRIMR
+BR
NFR
-BR2
+BR2
-B1R
+B1R
TRIMSR
+BSR
NFSR
-BSR2
+BSR2
-B1SR
+B1SR
NFSBR
+B1SBR
-B1SBR
+BSBR2
-BSBR2
+BSBR
TRIMSBR
NFSBL
+B1SBL
-B1SBL
+BSBL2
-BSBL2
+BSBL
TRIMSBL
+B1SL
-B1SL
+BSL2
-BSL2
NFSL
+BSL
TRIMSL
+B1L
-B1L
+BL2
-BL2
NFL
+BL
TRIML
AGND_DecupR
AGND_DecupL
C
FL
FR
SR
SL
SBR
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SA949-O(TPE6_F)
2SA1930(ONK_Q)
2SC5171(ONK_Q)
2SA949-O(TPE6_F)
or 2SA949-Y(TPE6_F)
2SC2229-O(TPE6_F)
or 2SC222-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2229-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SA949-O(TPE6_F)
2SA1930(ONK_Q)
2SC5171(ONK_Q)
2SA949-O(TPE6_F)
or 2SA949-Y(TPE6_F)
2SC2229-O(TPE6_F)
or 2SC222-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2229-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SA949-O(TPE6_F)
2SA1930(ONK_Q)
2SC5171(ONK_Q)
2SA949-O(TPE6_F)
or 2SA949-Y(TPE6_F)
2SC2229-O(TPE6_F)
or 2SC222-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2229-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SA949-O(TPE6_F)
2SC5171(ONK_Q)
2SA949-Y(TPE6_F)
2SC2229-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SA949-O(TPE6_F)
2SA1930(ONK_Q)
2SC5171(ONK_Q)
2SA949-O(TPE6_F)
or 2SA949-Y(TPE6_F)
2SC2229-O(TPE6_F)
or 2SC222-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2229-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SA949-O(TPE6_F)
2SA1930(ONK_Q)
2SC5171(ONK_Q)
2SA949-O(TPE6_F)
or 2SA949-Y(TPE6_F)
2SC2229-O(TPE6_F)
or 2SC222-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2229-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2240-BL(TPE2_F)
2SC2240-BL(TPE2_F)
2SA949-O(TPE6_F)
2SA1930(ONK_Q)
2SC5171(ONK_Q)
2SA949-O(TPE6_F)
or 2SA949-Y(TPE6_F)
2SC2229-O(TPE6_F)
or 2SC222-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2229-Y(TPE6_F)
2SA949-Y(TPE6_F)
2SC2240-BL(TPE2_F)
+60.5V
+0.6V
-0.6V
-0.2V
-0.3V
-1.0V
0V
+58.5V
-58.3V
-56.8V
+58.0V
-58.7V
+60.5V
+0.6V
-0.6V
-0.2V
-0.3V
-1.0V
0V
+58.5V
-58.3V
-56.8V
+58.0V
-0.9V
-58.7V
-60.5V
-60.5V
+60.5V
+0.6V
-0.6V
-0.2V
-0.3V
-1.0V
0V
+58.5V
-58.3V
-56.8V
+58.0V
-0.9V
-58.7V
-60.5V
+60.5V
+0.6V
-0.6V
-0.2V
-0.3V
-1.0V
0V
+58.5V
-58.3V
-56.8V
+58.0V
-0.9V
-58.7V
-60.5V
+60.5V
+0.6V
-0.6V
-0.2V
-0.3V
-1.0V
0V
+58.5V
-58.3V
-56.8V
+58.0V
-0.9V
-58.7V
-60.5V
+60.5V
+0.6V
-0.6V
-0.2V
-0.3V
-1.0V
0V
+58.5V
-58.3V
-56.8V
+58.0V
-0.9V
-58.7V
-60.5V
+60.5V
-1.0V
0V
+58.5V
-58.3V
-56.8V
+58.0V
-0.9V
-58.7V
-60.5V
2SA1930(ONK_Q)
2SA949-O(TPE6_F)
or 2SA949-Y(TPE6_F)
2SC2229-O(TPE6_F)
or 2SC222-Y(TPE6_F)
+0.6V
-0.6V
-0.2V
-0.3V
-0.9V
-55.1V
-55.1V
-55.1V
-55.1V
-55.1V
-55.1V
-55.1V
NTM-1P233(M1969)
SBL
+1.0V
+1.0V
+1.0V
+1.0V
+1.0V
+1.0V
+1.0V
R5022
330
R5052
5.6K
R5062
2.7K
D5002
MTZJ5.6B
R5102
100K
R5172
(1/4W)
820
R5192
(1/4W)
10
R5282
(1/4W)
120
R5492
10
R5472
(1/4W)
82
R5422
(1/4W)
10
R5182
(1/4W)
10
R5132
18K
R5442
2K
R5302
330
R5312
330
R5092
100K
R5142
(1/4W)
820
R5212
(1/4W)
820
R5122
2.2K
R5112
2.2K
R5012
33K
R5002
1.5K
R5362
(1/4W)
18
C5002
101J
Q5412
2SC2412K-R
R5202
18K
R5452
3.3K
R5152
(1/4W)
1.0K
R5082
(1/4W)
1.0K
Q5002
Q5012
Q5052
R5372
(1/4W)
2.2
R5482
10
L5402
5597-45502
L5412
5597-45502
Q5262
R5382
(1/4W)
2.2
Q5252
Q5442
Q5432
R5272
(1/4W)
120
R5352
(1/4W)
18
R5222
(1/4W)
120
R5162
(1/4W)
120
R5042
1K
C5092
101J
Q5062
Q5072
Q5032
Q5042
R5032
33K
R5021
330
R5051
5.6K
R5061
2.7K
D5001
MTZJ5.6B
R5101
100K
R5171
(1/4W)
820
R5191
(1/4W)
10
R5281
(1/4W)
120
R5491
10
R5471
(1/4W)
82
R5421
(1/4W)
10
R5181
(1/4W)
10
R5131
18K
R5441
2K
R5301
330
R5311
330
R5091
100K
R5141
(1/4W)
820
R5211
(1/4W)
820
R5121
2.2K
R5111
2.2K
R5011
33K
R5001
1.5K
R5361
(1/4W)
18
C5001
101J
Q5411
2SC2412K-R
R5201
18K
R5451
3.3K
R5151
(1/4W)
1.0K
R5081
(1/4W)
1.0K
Q5001
Q5011
Q5051
R5371
(1/4W)
2.2
R5481
10
L5401
5597-45502
L5411
5597-45502
Q5261
R5381
(1/4W)
2.2
Q5251
Q5441
Q5431
R5271
(1/4W)
120
R5351
(1/4W)
18
R5221
(1/4W)
120
R5161
(1/4W)
120
R5041
1K
C5091
101J
Q5061
Q5071
Q5031
Q5041
R5031
33K
Q5031A
CLA2
3
2
1
R5024
330
R5054
5.6K
R5064
2.7K
D5004
MTZJ5.6B
R5104
100K
R5174
(1/4W)
820
R5194
(1/4W)
10
R5284
(1/4W)
120
R5494
10
R5474
(1/4W)
82
R5424
(1/4W)
10
R5184
(1/4W)
10
R5134
18K
R5444
2K
R5304
330
R5314
330
R5094
100K
R5144
(1/4W)
820
R5214
(1/4W)
820
R5124
2.2K
R5114
2.2K
R5014
33K
R5004
1.5K
R5364
(1/4W)
18
C5004
101J
Q5414
2SC2412K-R
R5204
18K
R5454
3.3K
R5154
(1/4W)
1.0K
R5084
(1/4W)
1.0K
Q5004
Q5014
Q5054
R5374
(1/4W)
2.2
R5484
10
L5404
5597-45502
L5414
5597-45502
Q5264
R5384
(1/4W)
2.2
Q5254
Q5444
Q5434
R5274
(1/4W)
120
R5224
(1/4W)
120
R5164
(1/4W)
120
R5044
1K
C5094
101J
Q5064
Q5074
Q5034
Q5044
R5034
33K
R5026
330
R5056
5.6K
R5066
2.7K
D5006
MTZJ5.6B
R5106
100K
R5176
(1/4W)
820
R5196
(1/4W)
10
R5286
(1/4W)
120
R5136
18K
R5306
330
R5316
330
R5096
100K
R5146
(1/4W)
820
R5216
(1/4W)
820
R5126
2.2K
R5116
2.2K
R5016
33K
R5006
1.5K
C5006
101J
R5206
18K
R5156
(1/4W)
1.0K
R5086
(1/4W)
1.0K
Q5006
Q5016
Q5056
Q5266
R5386
(1/4W)
2.2
Q5446
R5226
(1/4W)
120
R5166
(1/4W)
120
R5046
1K
C5096
101J
Q5066
Q5076
Q5036
Q5046
R5036
33K
Q5036A
CLA2
3
2
1
R5025
330
R5055
5.6K
R5065
2.7K
D5005
MTZJ5.6B
R5105
100K
R5175
(1/4W)
820
R5195
(1/4W)
10
R5285
(1/4W)
120
R5495
10
R5475
(1/4W)
82
R5425
(1/4W)
10
R5185
(1/4W)
10
R5135
18K
R5445
2K
R5305
330
R5315
330
R5095
100K
R5145
(1/4W)
820
R5215
(1/4W)
820
R5125
2.2K
R5115
2.2K
R5005
1.5K
R5365
(1/4W)
18
C5005
101J
Q5415
2SC2412K-R
R5205
18K
R5455
3.3K
R5155
(1/4W)
1.0K
R5085
(1/4W)
1.0K
Q5005
Q5015
Q5055
R5375
(1/4W)
2.2
R5485
10
L5405
5597-45502
L5415
5597-45502
Q5265
R5385
(1/4W)
2.2
Q5255
Q5445
Q5435
R5275
(1/4W)
120
R5355
(1/4W)
18
R5225
(1/4W)
120
R5165
(1/4W)
120
R5045
1K
C5095
101J
Q5065
Q5075
Q5035
Q5045
R5035
33K
R5023
330
R5053
5.6K
R5063
2.7K
D5003
MTZJ5.6B
R5103
100K
R5173
(1/4W)
820
R5193
(1/4W)
10
R5283
(1/4W)
120
R5493
10
R5473
(1/4W)
82
R5423
(1/4W)
10
R5183
(1/4W)
10
R5133
18K
R5443
2K
R5303
330
R5313
330
R5093
100K
R5143
(1/4W)
820
R5213
(1/4W)
820
R5123
2.2K
R5113
2.2K
R5013
33K
R5003
1.5K
R5363
(1/4W)
18
C5003
101J
Q5413
2SC2412K-R
R5203
18K
R5453
3.3K
R5153
(1/4W)
1.0K
R5083
(1/4W)
1.0K
Q5003
Q5013
Q5053
R5373
(1/4W)
2.2
R5483
10
L5403
5597-45502
L5413
5597-45502
Q5263
R5383
(1/4W)
2.2
Q5253
Q5443
Q5433
R5273
(1/4W)
120
R5353
(1/4W)
18
R5223
(1/4W)
120
R5163
(1/4W)
120
R5043
1K
C5093
101J
Q5063
Q5073
Q5033
Q5043
R5033
33K
Q5033A
CLA2
3
2
1
R5020
330
R5050
5.6K
R5060
2.7K
D5000
MTZJ5.6B
R5100
100K
R5170
(1/4W)
820
R5190
(1/4W)
10
R5280
(1/4W)
120
R5490
10
R5470
(1/4W)
82
R5420
(1/4W)
10
R5180
(1/4W)
10
R5130
18K
R5090
100K
R5140
(1/4W)
820
R5210
(1/4W)
820
R5120
2.2K
R5110
2.2K
R5010
33K
R5000
1.5K
R5360
(1/4W)
18
C5000
101J
R5200
18K
R5450
3.3K
R5150
(1/4W)
1.0K
R5080
(1/4W)
1.0K
Q5000
R5370
(1/4W)
2.2
R5480
10
L5400
5597-45502
L5410
5597-45502
Q5260
R5380
(1/4W)
2.2
Q5250
Q5440
Q5430
R5270
(1/4W)
120
R5350
(1/4W)
18
R5220
(1/4W)
120
R5160
(1/4W)
120
R5040
1K
C5090
101J
Q5070
Q5040
R5030
33K
Q5050
R5300
330
R5310
330
Q5010
Q5030
Q5060
Q5030A
CLA2
3
2
1
Q5410
2SC2412K-R
R5440
2K
Q5032A
CLA2
3
2
1
R5496
10
R5476
(1/4W)
82
R5426
(1/4W)
10
R5186
(1/4W)
10
R5446
2K
R5366
(1/4W)
18
Q5416
2SC2412K-R
R5456
3.3K
R5376
(1/4W)
2.2
R5486
10
L5406
5597-45502
L5416
5597-45502
Q5256
Q5436
R5276
(1/4W)
120
R5356
(1/4W)
18
P6001A:A
NSCT-9P2189
1
4
5
6
7
8
9
P6004A:A
NSCT-9P2189
1
4
5
6
7
8
9
P6006A:A
NSCT-9P2189
1
4
5
6
7
8
9
P6005A:A
NSCT-9P2189
1
4
5
6
7
8
9
P6003A:A
NSCT-9P2189
1
4
5
6
7
8
9
P6000A:A
NSCT-9P2189
1
4
5
6
7
8
9
P6007B
NSCT-3P2183
1
2
3
P6002A:A
NSCT-9P2189
1
4
5
6
7
8
9
P6005A:B
NSCT-9P2189
2
3
P6003A:B
NSCT-9P2189
2
3
P6000A:B
NSCT-9P2189
2
3
P6001A:B
NSCT-9P2189
2
3
P6002A:B
NSCT-9P2189
2
3
P6004A:B
NSCT-9P2189
2
3
P6006A:B
NSCT-9P2189
2
3
C5082
040C
Q5034A
CLA2
3
2
1
C5084
040C
Q5035A
CLA2
3
2
1
C5085
040C
C5080
040C
C5081
040C
C5083
040C
C5086
040C
E6008B
2
3
4
1
C5013
47/50(UTSP)
R5015
33K
C5015
47/50(UTSP)
C5011
47/50(UTSP)
C5012
47/50(UTSP)
C5014
47/50(UTSP)
C5016
47/50(UTSP)
C5010
47/50(UTSP)
C5020
10/50(UTSP)
C5023
10/50(UTSP)
C5025
10/50(UTSP)
C5026
10/50(UTSP)
C5024
10/50(UTSP)
C5021
10/50(UTSP)
C5022
10/50(UTSP)
C5040
470/10(UTSP)
C5043
470/10(UTSP)
C5045
470/10(UTSP)
C5042
470/10(UTSP)
C5041
470/10(UTSP)
C5044
470/10(UTSP)
C5046
470/10(UTSP)
C5050
47/50(UTSP)
C5445
22/50(UTSP)
C5443
22/50(UTSP)
C5440
22/50(UTSP)
C5446
22/50(UTSP)
R5354
(1/4W)
18
C5444
22/50(UTSP)
C5441
22/50(UTSP)
C5442
22/50(UTSP)
C5100
22/100(VR)
C5110
22/100(VR)
C5113
22/100(VR)
C5105
22/100(VR)
C5115
22/100(VR)
C5116
22/100(VR)
C5106
22/100(VR)
C5114
22/100(VR)
C5111
22/100(VR)
C5112
22/100(VR)
C5101
22/100(VR)
C5051
47/50(UTSP)
C5102
22/100(VR)
C5052
47/50(UTSP)
C5104
22/100(VR)
C5054
47/50(UTSP)
C5056
47/50(UTSP)
C5055
47/50(UTSP)
C5103
22/100(VR)
C5053
47/50(UTSP)
IDLING CURRENT ADJUSTMENT
1. Wait for
4 - 6
minutes after power on. (Heat running)
2. Re-adjust the trimming resistors according to the following values.
Adjustment point
R6040 ~ R6048
Re-adjustment value
3 mV
No re-adjustment
4 mV
Measured value
In case below
3 mV
In case
3 - 4 mV
In case over
4mV
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).
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.
!
NOTE
U008
AMPLIFIER PC BOARD
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.
TO BAAMP-0444 PART-8:D4
TO BAAMP-0444
PART-8:D4
TO BAAMP-0444 PART-8:D5-6
TO BAAMP-0444 PART-8:D5-6
TO BAAMP-0444 PART-8:D4
TO BAAMP-0444
PART-8:D4
TO BAAMP-0444 PART-8:D2
TO BAAMP-0444
PART-8:D2
TO BAAMP-0444 PART-8:H3
TO BAAMP-0444 PART-8:H4
TO BAAMP-0444 PART-8:H5~6
TO BAAMP-0444 PART-8:H5-6
TO BAAMP-0444 PART-8:H4
TO BAAMP-0444 PART-8:H3
U0011
BACLA-0445
POWER AMP. BOARD
IDLING CURRENT ADJUSTMENT
1. Wait for
4 - 6
minutes after power on. (Heat running)
2. Re-adjust the trimming resistors according to the following values.
Adjustment point
R5440 ~ R5446
Re-adjustment value
4 mV
No re-adjustment
6 mV
Measured value
In case below
4 mV
In case
4 - 6 mV
In case over
6mV
