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A
B
SCHEMATIC DIAGRAMS - 7
AMP (VOLTAGE AMP) SECTION
Q Q
3 7 6 3 1 5 1 5 0
BACLA-0484
U0024
BACLA-0484
+60.7
FR
1
58.6V
58.6V
R5001
C5011
R5021
+
1K
47/50
330
UTSP
3
-0.6V
2
C5021
1
471K
-0.9V
R5091
AGND_inputR
1.8K
AGND_NFR
AGND_DecupR
2
-59.5V
4
3
2
1
NTM-1P233
-60.7V
P5021A
U0025
BACLA-0485
BACLA-0485
+60.7
SBR
58.6V
58.6V
3
R5006
C5016
R5026
+
1K
47/50
330
UTSP
3
-0.6V
2
C5026
471K
1
-0.9V
AGND_inputSBR
R5096
1.8K
AGND_NFSBR
AGND_DecupSBR
-59.5V
4
3
2
1
NTM-1P233
-60.7V
P5026A
4
U0026
BACLA-0486
BACLA-0486
+60.7
SR
58.6V
T E
L
1 3 9 4 2 2 9 6 5 1 3
58.6V
R5004
C5014
R5024
+
1K
47/50
330
UTSP
3
-0.6V
2
C5024
1
471K
-0.9V
AGND_inputSR
R5094
1.8K
AGND_NFSR
5
AGND_DecupSR
-59.5V
4
3
2
1
NTM-1P233
-60.7V
P5024A
U0027
BACLA-0487
BACLA-0487
+60.7
C
58.6V
6
58.6V
R5002
C5012
R5022
+
1K
47/50
330
3
UTSP
-0.6V
C5022
2
1
471K
-0.9V
AGND_inputC
R5092
1.8K
AGND_NFC
AGND_DecupC
-59.5V
7
4
3
2
1
NTM-1P233
-60.7V
P5022A
U0028
BACLA-0488
BACLA-0488
+60.7
RH
58.6V
58.6V
w w w
R5008
C5018
R5028
+
1K
47/50
330
UTSP
3
-0.6V
2
C5028
1
471K
-0.9V
8
AGND_inputRH
R5098
1.8K
AGND_NFRH
AGND_DecupRH
-59.5V
4
3
2
1
NTM-1P233
-60.7V
P5028A
C
D
(1/4W)
15
61V
+B2R
+B1R
R5231
(1/4W)
1.1V
+BR
33
R6311
R5181
10
(1/4W)
1.1V
0V
R5251
68K
NFR
18
(1/4W)
R5261
0.6V
270K
L6001
R6271
R6111
C6001
10
R6081
10K
102J
-0.6V
(1/4W)
18
10
R6091
R6281
L6011
-1.1V
-BR
-1.1V
(1/4W)
15
-B2R
-B1R
R5241
-61V
(1/4W)
15
61V
+B2SBR
+B1SBR
R5236
(1/4W)
1.1V
+BSBR
33
R6316
R5186
10
(1/4W)
1.1V
0V
R5256
68K
NFSBR
18
(1/4W)
R5266
0.6V
L6006
270K
R6276
R6116
C6006
10
R6086
10K
102J
-0.6V
(1/4W)
18
10
R6096
R6286
L6016
-1.1V
-BSBR
-1.1V
(1/4W)
15
-B2SBR
-B1SBR
R5246
-61V
(1/4W)
15
61V
+B2SR
+B1SR
R5234
(1/4W)
1.1V
+BSR
33
R6314
R5184
10
(1/4W)
1.1V
0V
R5254
68K
NFSR
18
(1/4W)
R5264
0.6V
270K
L6004
R6274
R6114
C6004
10
R6084
10K
102J
-0.6V
(1/4W)
18
10
R6094
R6284
L6014
-1.1V
-BSR
-1.1V
(1/4W)
15
-B2SR
-B1SR
R5244
-61V
(1/4W)
61V
+B2C
15
+B1C
R5232
(1/4W)
1.1V
+BC
33
R6312
R5182
10
(1/4W)
1.1V
0V
R5252
68K
NFC
18
(1/4W)
R5262
0.6V
270K
L6002
R6272
R6112
C6002
10
R6082
10K
102J
-0.6V
(1/4W)
18
10
R6092
R6282
L6012
-1.1V
-BC
-1.1V
(1/4W)
15
-B2C
-B1C
R5242
-61V
(1/4W)
15
61V
+B2RH
+B1RH
R5238
(1/4W)
1.1V
+BRH
33
R6318
R5188
10
(1/4W)
1.1V
0V
R5258
68K
NFRH
18
x
a o
(1/4W)
R5268
0.6V
y
270K
L6008
R6278
R6118
C6008
10
R6088
.
10K
102J
i
-0.6V
(1/4W)
18
10
R6098
R6288
L6018
-1.1V
-BRH
-1.1V
(1/4W)
-B2RH
15
-B1RH
R5248
-61V
http://www.xiaoyu163.com
E
F
G
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.
8
Circuit number is different, but as for the circuit being the same, there is compatibility.
If you will exchange these pc board assembly, re-adjust the idling current.
U0024(BACLA-0484, FR ch)
U0025(BACLA-0485, SBR ch)
U0026(BACLA-0486, SR ch)
U0027(BACLA-0487, C ch)
U0028(BACLA-0488, RH ch, TX-NR1008/NA1008 only)
9
8
Circuit number is different, but as for the circuit being the same, there is compatibility.
7
If you will exchange these pc board assembly, re-adjust the idling current.
6
5
4
U0020(BACLA-0480, FL ch)
3
2
U0021(BACLA-0481, SBL ch)
1
U0022(BACLA-0482, SL ch)
U0023(BACLA-0483, LH ch, TX-NR1008/NA1008 only)
U0020
BACLA-0480
BACLA-0480
FL
58.6V
58.6V
R5000
C5010
R5020
+
1K
47/50
330
UTSP
1
-0.6V
9
2
C5020
8
471K
3
7
-0.9V
6
AGND_inputL
R5090
5
1.8K
AGND_NFL
4
AGND_DecupL
3
2
1
4
3
2
1
NTM-1P233
-60.7V
P5020A
U0021
BACLA-0481
BACLA-0481
SBL
58.6V
Q
Q
58.6V
3
7
6
3
R5005
C5015
R5025
+
1K
47/50
330
UTSP
1
-0.6V
9
2
C5025
8
3
471K
7
-0.9V
R5095
6
AGND_inputSBL
5
1.8K
AGND_NFSBL
4
AGND_DecupSBL
3
2
1
4
3
2
1
NTM-1P233
-60.7V
P5025A
U0022
BACLA-0482
BACLA-0482
SL
58.6V
58.6V
R5003
C5013
R5023
+
1K
47/50
330
UTSP
1
-0.6V
9
2
C5023
8
471K
3
7
-0.9V
6
AGND_inputSL
R5093
5
1.8K
AGND_NFSL
4
AGND_DecupSL
3
2
1
4
3
2
1
NTM-1P233
-60.7V
P5023A
U0023
BACLA-0483
BACLA-0483
LH
58.6V
58.6V
R5007
C5017
R5027
+
1K
47/50
330
UTSP
1
-0.6V
9
2
C5027
u 1 6 3
8
3
471K
7
-0.9V
6
AGND_inputLH
R5097
5
1.8K
.
AGND_NFLH
4
AGND_DecupLH
3
2
1
4
3
2
1
NTM-1P233
-60.7V
P5027A
TX-NR808/1008, TX-NA808/1008, DTR-50.2
H
I
9
2
4
9
+60.7
15
61V
+B2L
(1/4W)
+B1L
R5230
(1/4W)
1.1V
+BL
33
R6310
R5180
10
(1/4W)
1.1V
0V
R5250
68K
NFL
18
(1/4W)
R5260
0.6V
270K
R6270
R6110
C6000
10K
102J
-0.6V
(1/4W)
18
R6280
-1.1V
-BL
-59.5V
-1.1V
(1/4W)
15
-B2L
-B1L
R5240
-61V
(1/4W)
+60.7
15
61V
+B2SBL
+B1SBL
R5235
(1/4W)
1.1V
+BSBL
33
R6315
R5185
10
(1/4W)
1.1V
1
5
1
5
0
8
9
2
0V
R5255
68K
NFSBL
18
(1/4W)
R5265
0.6V
270K
R6275
R6115
C6005
10K
102J
-0.6V
(1/4W)
18
R6285
-1.1V
-BSBL
-59.5V
-1.1V
(1/4W)
15
-B2SBL
-B1SBL
R5245
-61V
(1/4W)
+60.7
15
61V
+B2SL
+B1SL
R5233
(1/4W)
1.1V
+BSL
33
R6313
R5183
10
(1/4W)
1.1V
0V
R5253
68K
NFSL
18
(1/4W)
R5263
0.6V
270K
R6273
R6113
C6003
10K
102J
-0.6V
(1/4W)
18
R6283
-1.1V
-BSL
-59.5V
-1.1V
(1/4W)
15
-B2SL
-B1SL
R5243
-61V
(1/4W)
+60.7
15
61V
+B2LH
+B1LH
R5237
(1/4W)
1.1V
+BLH
33
R6317
R5187
10
(1/4W)
1.1V
m
0V
R5257
68K
NFLH
18
c o
(1/4W)
R5267
0.6V
270K
R6277
R6117
C6007
10K
102J
-0.6V
(1/4W)
18
R6287
-1.1V
-BLH
-59.5V
-1.1V
(1/4W)
15
-B2LH
-B1LH
R5247
-61V
J
K
IDLING CURRENT ADJUSTMENT
8
2
9
9
1. Wait for 4 - 6 minutes after power on. (Heat running)
2. Re-adjust the trimming resistors according to the following values.
Adjustment point
Measured value
Re-adjustment value
In case below 4 mV
4 mV
R6040 ~ R6048
In case 4 - 6 mV
No re-adjustment
In case over 6mV
6 mV
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).
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.
1
2
L6000
3
4
10
R6080
5
6
10
R6090
7
8
L6010
9
4
9
8
2
9
9
1
2
L6005
3
4
10
R6085
5
6
10
R6095
7
8
L6015
9
1
2
L6003
3
4
10
R6083
5
6
10
R6093
7
8
L6013
9
1
2
L6007
3
4
10
R6087
5
6
10
R6097
7
8
L6017
9
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