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A
B
SCHEMATIC DIAGRAMS-1 / PART-6
AMP1 (VOLTAGE AMP) SECTION
BACLA-0226
1
U008
AMPLIFIER PC BOARD
BACLA-0227
+59.8V
+B2R
R
U0081
58.9V
(1/4W)
33
AMPLIFIER
58.9V
R5181
PC BOARD
R5001
C5011
R5021
+
0V
1K
47/50
330
UTSP
3
-0.6V
2
C5021
1
471K
2
-0.9V
R5091
1.8K
-11.0V
-59.5V
4
3
2
1
-B2R
P5021A
-59.8V
BACLA-0232
+59.8V
+B2SBR
SBR
U0086
58.9V
(1/4W)
33
AMPLIFIER
58.9V
R5186
3
PC BOARD
R5006
C5016
R5026
+
0V
1K
47/50
330
UTSP
3
-0.6V
2
C5026
1
471K
-0.9V
R5096
1.8K
-11.0V
-59.5V
4
4
3
2
1
-B2SBR
P5026A
-59.8V
BACLA-0230
+59.8V
+B2SR
SR
U0084
58.9V
(1/4W)
33
58.9V
R5184
AMPLIFIER
PC BOARD
R5004
C5014
R5024
+
0V
1K
47/50
330
UTSP
3
-0.6V
2
C5024
1
471K
-0.9V
R5094
1.8K
5
-11.0V
-59.5V
4
3
2
1
-B2SR
P5024A
-59.8V
BACLA-0228
+59.8V
+B2C
C
U0082
58.9V
(1/4W)
33
AMPLIFIER
58.9V
R5182
PC BOARD
6
R5002
C5012
R5022
+
0V
1K
47/50
330
UTSP
3
-0.6V
C5022
2
471K
1
-0.9V
R5092
1.8K
-11.0V
-59.5V
4
3
2
1
-B2C
P5022A
-59.8V
7
BACLA-0234
+59.8V
+B2RH
RH
U0088
58.9V
(1/4W)
33
AMPLIFIER
58.9V
R5188
PC BOARD
R5008
R5028
C5018
+
0V
1K
47/50
330
UTSP
3
-0.6V
C5028
2
1
471K
-0.9V
R5098
1.8K
8
-11.0V
-59.5V
4
3
2
1
-B2RH
P5028A
-59.8V
C
D
(1/4W)
60.1V
15
+B1R
R5231
1.1V
+BR
R6311
10
(1/4W)
1.1V
1
2
R5251
NFR
3
68K
0.6V
R5261
5
270K
R6111
C6001
-0.6V
4
10K
102J
3
2
1
IDLING
ADJ.
-1.1V
-BR
-1.1V
(1/4W)
15
-B1R
R5241
-60.2V
(1/4W)
60.1V
15
+B1SBR
R5236
1.1V
+BSBR
R6316
10
(1/4W)
1.1V
1
2
R5256
NFSBR
3
68K
0.6V
R5266
5
270K
R6116
C6006
-0.6V
4
10K
102J
3
2
1
IDLING
-1.1V
ADJ.
-BSBR
-1.1V
(1/4W)
15
-B1SBR
R5246
-60.2V
(1/4W)
60.1V
15
+B1SR
R5234
1.1V
+BSR
R6314
10
(1/4W)
1.1V
1
2
R5254
NFSR
3
68K
0.6V
R5264
5
270K
R6114
C6004
-0.6V
4
10K
102J
3
2
1
IDLING
-1.1V
ADJ.
-BSR
-1.1V
(1/4W)
15
-B1SR
R5244
-60.2V
(1/4W)
15
60.1V
+B1C
R5232
1.1V
+BC
R6312
10
(1/4W)
1.1V
1
2
R5252
NFC
3
68K
0.6V
R5262
5
270K
R6112
C6002
-0.6V
4
10K
102J
3
2
1
IDLING
-1.1V
ADJ.
-BC
-1.1V
(1/4W)
15
-B1C
R5242
-60.2V
(1/4W)
15
60.1V
+B1RH
R5238
1.1V
+BRH
R6318
10
(1/4W)
1.1V
1
2
R5258
NFRH
3
68K
0.6V
R5268
5
270K
R6118
C6008
-0.6V
4
10K
102J
3
2
1
IDLING
-1.1V
ADJ.
-BRH
-1.1V
(1/4W)
15
-B1RH
R5248
-60.2V
E
F
G
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
Measured value
Re-adjustment value
R6040 ~ R6048
In case below 3 mV
3 mV
In case 3 - 4 mV
No re-adjustment
In case over 4mV
4 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.
(1/4W)
BACLA-0226
+59.8V
+B2L
15
L
R5230
58.9V
(1/4W)
1.1V
U0080
33
58.9V
R5180
AMPLIFIER
1.1V
PC BOARD
R5000
C5010
R5020
+
0V
1K
47/50
330
UTSP
1
-0.6V
2
C5020
3
471K
-0.9V
R5090
R6110
1.8K
10K
IDLING
-1.1V
ADJ.
-11.0V
-59.5V
-1.1V
(1/4W)
4
3
2
1
-B2L
15
P5020A
-59.8V
R5240
(1/4W)
BACLA-0231
+59.8V
+B2SBL
15
SBL
R5235
58.9V
(1/4W)
1.1V
U0085
33
58.9V
R5185
AMPLIFIER
1.1V
PC BOARD
R5005
C5015
R5025
+
0V
1K
47/50
330
UTSP
1
-0.6V
2
C5025
3
471K
-0.9V
R5095
R6115
1.8K
10K
-1.1V
IDLING
-11.0V
ADJ.
-59.5V
-1.1V
(1/4W)
4
3
2
1
-B2SBL
15
P5025A
-59.8V
R5245
(1/4W)
BACLA-0229
+59.8V
15
+B2SL
SL
R5233
58.9V
(1/4W)
1.1V
U0083
33
58.9V
R5183
AMPLIFIER
1.1V
PC BOARD
R5003
C5013
R5023
+
0V
1K
47/50
330
UTSP
1
-0.6V
2
C5023
471K
3
-0.9V
R5093
R6113
1.8K
10K
IDLING
-1.1V
ADJ.
-11.0V
-59.5V
-1.1V
(1/4W)
15
4
3
2
1
-B2SL
P5023A
-59.8V
R5243
(1/4W)
BACLA-0233
+59.8V
15
+B2LH
LH
R5237
U0087
58.9V
(1/4W)
1.1V
33
58.9V
R5187
AMPLIFIER
1.1V
PC BOARD
R5007
R5027
C5017
+
0V
1K
47/50
330
UTSP
1
-0.6V
C5027
2
471K
3
-0.9V
R5097
R6117
1.8K
10K
IDLING
-1.1V
ADJ.
-11.0V
-59.5V
-1.1V
(1/4W)
15
4
3
2
1
-B2LH
P5027A
-59.8V
R5247
TX-NR1007/3007/5007/NA1007/5007, DTR-70.1/80.1, DHC-80.1, PR-SC5507
H
I
60.1V
+B1L
+BL
R6310
10
(1/4W)
3
2
R5250
NFL
1
68K
0.6V
R5260
1
270K
C6000
-0.6V
2
102J
3
4
5
-BL
-B1L
-60.2V
60.1V
+B1SBL
+BSBL
R6315
10
(1/4W)
3
2
R5255
NFSBL
1
68K
0.6V
R5265
1
270K
C6005
-0.6V
2
102J
3
4
5
-BSBL
-B1SBL
-60.2V
60.1V
+B1SL
+BSL
R6313
10
(1/4W)
3
2
R5253
NFSL
1
68K
0.6V
R5263
1
270K
C6003
-0.6V
2
102J
3
4
5
-BSL
-B1SL
-60.2V
60.1V
+B1LH
+BLH
R6317
10
(1/4W)
3
2
R5257
NFLH
1
68K
0.6V
R5267
1
270K
C6007
-0.6V
2
102J
3
4
5
-BLH
-B1LH
-60.2V
J
K
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