ST3030 Series IIST3030 Series II
SERVICE MANUAL
B&K COMPONENTS, LTD.
2100 Old Union Road
Buffalo, New York 14227-2725
U.S.A.
SchematicsSchematics
B&K COMPONENTS, LTD.
2100 Old Union Road
Buffalo, New York 14227-2725
U.S.A.
R11
2.26K
1
R8
221
C10
1N4751
R13
100uF 25V
33.2K
D1
R6
133
Q8
2N5087
Q6
2N5210
P1
500
2N5087
2N5210
R37
JUMPER
R7
221
100uF 100V
Q7
Q5
C13
33.2K
.12uF
C11
OPEN
R9
C15
R44
33.2K
120pF
C3
R26
47.5
V+
Q9
2N5416
R31
47.5K
1
F1
6A SLOW
QN5
RP5
.47 5W
D2
1N965B
R20
33.2K
D4
MUTE
1N4148
CTRL IN
1
10K
R19
Q13
2N5401
* BYPASS CTRL
1
R21
OPEN
C7
C9
OPEN
OPEN
1.5K
R16
1.5K
R17
1.5K
R22
1.5K
R23
1.5K
R24
SK1058
QN1
RP1
SK1058
.47 5W
QN2
RP2
SK1058
.47 5W
QN2
RP3
SK1058
.47 5W
QN4
RP4
SK1058
.47 5W
FEDCBA
C1
P_GND
CON1
MOLEX5M
R1
1.5K
10uF 25V
1
1
2
3
4
5
R2
33.2K
2
3
C16
.12uF
C
COPYRIGHT 1995
4
B&K COMPONENTS LTD.
AB C D E F
Q1
2N5210
R3
221
J1
100uF 100V
Q2
2N5210
R5
R39
2.26K
2.26K
R4
221
C2C1
R36
10K
Q3
2N5210
221
R12
C12
R14
JUMPER
C2
100uF 25V
_
Q4
2N5210
10V
MUTE
2N5210
Q10
R42
R40
221K
47.5K
Q11
2N5210
R25
CT
P2
475
R10
100uF 25V
R15
500
JUMPER
Q12
2N3440
47.5
R38
JUMPER
V-
C14
1
10uF 25V
F2
6A SLOW
RP6
RP7
.47 5W
.47 5W
SJ162
SJ162
R27
1.5K
R28
QP1
1.5K
R29
1.5K
R30
1.5K
R35
1.5K
C6
C8
OPEN
OPEN
QP2
SJ162
QP3
RP8
.47 5W
SJ162
QP4
RP9
.47 5W
SJ162
QP5
B&K Amp Model #
THE RIGHT CHANNEL IS SHOWN, THE LEFT CHANNEL IS THE SAME.
Title
Size
C
7/7/97
Date
Filename Sheet of
1
SPEAKER OUT
RP10
.47 5W
D3
R43
ST1400 2 PAIR/ch STEREO
ST1400M 4 PAIR MONO
ST2020 3 PAIR/ch STEREO
ST3030 3 PAIR/ch STEREO
EX4420 5 PAIR/ch STEREO
EX4420M 10 PAIR MONO
TX4430 4 PAIR/ch THREE CH
Pair of Hitachi Mosfets
THX STYLE WITH CONTROL I/O
BK PCB P/N 10842 REV A
5/19/97
10842A00.S01
Drawn by
1N4751B
1K
2
3
4
RevNumber
A
ESM
1
1
CTRL
CTRL IN
1
CTRL OUT
CON1
P\N 10871 REV -
CON2
1 2 3 4 5
CON3
2
SW1
5
4 3
CTRL
DEFEAT
DCBA
V+
CH MUTE CONTROLS CTRL
16
2
CON4
CON5
CON6
CON7
CON8
CON9
R2
J1
C1 C2
* FOR
R3
10K
BYPASS ONLY
R4
JUMPER
R1
100 2W
100 2W
1
C1
+
15KuF 75V
BR1
-
C2
V-
15KuF 75V
2
R6
3
5.62
TIP32C
D5
1N4148
1N4148
R8
10K
D8
1N4148
D10
4
1N4148
1N4148
R10
133
AB CD
54321
D6
D11
Q2
R9
33.2K
R7
Q4
2N5551
Q3
2.2K 5W
D9
D1
D3
TIP31C
1N965B
1N4002
1N4002
D7
1N4002
D2
C5
Q1
2N5551
1N4148
33nF
7/7/97
R5
D4
1K
1N965B
Title
Size
A
Date
Filename
V+
+
BR2
-
AC IN
AC IN
V-
P\N 10611 REV B
P/N 10611 AMP P/S BOARD
P/N 10871 CONTROL I/O BOARD
B&K P\N 10611 REV B
B&K P\N 10871 REV -
10611B00.S01
Drawn by
15KuF 75V
11
15KuF 75V
ESM2/9/95
ofSheet
C3
C4
3
4
RevNumber
11
4321
D
FROM RCA INPUT CONNECTORS
L IN + L IN- R IN+ R IN - C IN + C IN -
C
B
L LEVEL
PR3
50K
R LEVEL
PR1
50K
CENTER LEVEL
PR2
50K
STAR POINT
CN1
NC
NC
NC
MOLEX5
CN2
MOLEX5
1
2
3
4
L OUT
5
1
2
R OUT
3
4
C OUT
5
D
C
B
A
1 2 3 4
Title
A
Date: 8-Mar-1999 Sheet of
File: F:\USERS\..\11021-00.SCH Drawn By:
3 CH POWER AMPLIFIER LEVEL CONTROL
Number RevisionSize
B&K P/N 11021
---
1 OF 1
MVB
A
DCBA
1
2
3
THE SECONDARY VOLTAGES LISTED ARE FOR FULL LOAD CONDITIONS.
APPROX. MAX DIMENSIONS OF TOROIDAL TRANSFORMER:
HEIGHT: 3.5"
625VA MULTI SEC/PRI TOROID
0
GRY/BLK
120V
120V
ORN
BRN
0
WHT
BLUBLK
VIO
GRN
RED
GRY/WHT
YEL
1
48V
43V
* OPTIONAL100V
RED
2
43V
48V
3
APPROX. MAX MOUNTING DIM. 6.0"
LEAD LENGTH: 9"
THE ABOVE PHYSICAL DIMENSIONS ARE MAXIMUM DIMENSIONS.
4
AB CD
7/22/97
Title
Size
A
Date
Filename
B&K COMPONENTS LTD.
B&K P\N 10085
625VA MULTI SEC/PRI
1/18/95
10085.S01
Drawn by
RevNumber
-
ESM
11
ofSheet
4
Printed Circuit BoardsPrinted Circuit Boards
PCB’sPCB’s
B&K COMPONENTS, LTD.
2100 Old Union Road
Buffalo, New York 14227-2725
U.S.A.
Bill of Materials Bill of Materials
BOM’sBOM’s
B&K COMPONENTS, LTD.
2100 Old Union Road
Buffalo, New York 14227-2725
U.S.A.
File: D:\B&K_Rob\Service Booklets\Bom\10842AP.BOM 7/9/97, 11:05:08AM
Bill of Material for P/N 10842
ST1400/ST1400M/ST2020/ST3030/EX4420/EX4420M/TX4430 AMP BOARD WITH
CONTROL I/OF
Comment Pattern Quantity Components
------------------------------------------------------------------------------
.12uF RAD200 2 C15, C16
.47 5W R5W.S 10 RP1, RP2, RP3, RP4, RP5, RP6,
RP7, RP8, RP9, RP10
1.5K RES500 1 R1
100uF 100V CAP200RP 2 C12, C13
100uF 25V CAP200RP 3 C2, C10, CT
10K RES500 2 R19, R36
10uF 25V CAP200RP 2 C1, C14
120pF RAD200 1 C3
133 RES500 1 R6
1K RES400 1 R24
1.5K RES500 10 R16, R17, R22, R23, R27, R28,
R29, R30, R35, R43
1N4148 DIODE.4 1 D4
1N4751 D0-35 1 D1
1N4751 DIODE.4 1 D3
1N965B DIODE.4 1 D2
2.26K RES500 3 R5, R11, R39
221 RES500 5 R3, R4, R7, R8, R12
221K RES500 1 R40
2N3440 TO5 1 Q12
2N5087 M TO92 2 Q7, Q8
2N5210 M TO92 4 Q1, Q2, Q5, Q6
2N5210 U TO92 4 Q3, Q4, Q10, Q11
2N5401 TO92 1 Q13
2N5416 TO5 1 Q9
33.2K RES500 4 R2, R9, R13, R44
47.5 RES500 2 R15, R26
47.5K RES400 2 R20, R31
47.5K RES500 1 R42
475 RES500 1 R25
5 MOLEX M MOLEX5 1 CON1
500 POT 2 P1, P2
FUSE 6A SB FUSE.3AG 2 F1, F2
JUMPER JUMP.5 1 J1
JUMPER RES400 4 R14, R21, R37, R38
JUMPER RES500 1 R10
OPEN CAP200RP 2 C6, C7
OPEN RAD200 3 C8, C9, C11
SJ162 TO3P 5 QP1, QP2, QP3, QP4, QP5
SK1058 TO3P 5 QN1, QN2, QN3, QN4, QN5
Page: 1
File: D:\B&K_Rob\Service Booklets\Bom\10611BP.BOM 7/9/97, 2:19:12PM
Bill of Material for P/N 10611
POWER SUPPLY BOARD FOR LARGE CHASSIS AMPS
Comment Pattern Quantity Components
------------------------------------------------------------------------------
100 2W AXIAL0.7 2 R1, R2
10K RES500 2 R3, R8
133 RES500 1 R10
15000uF 75V PCAP.BIG 4 C1, C2, C3, C4
1K RES500 1 R5
1N4002 D0-35 3 D1, D3, D7
1N4148 D0-35 6 D2, D5, D6, D8, D10, D11
1N965B D0-35 2 D4, D9
2.2K 5W RES5WAXIAL 1 R7
2N5551 TO92 2 Q1, Q4
33.2K RES500 1 R9
33nF RAD200 1 C5
400V 40A BRIDGE.HP 2 BR1, BR2
5 PIN MOLEX5 1 CON3
5.62 RES500 1 R6
JUMPER JUMP.5 1 J6
JUMPER JUMP.8 13 J2, J3, J4, J5, J7, J8, J9, J10,
J11, J12, J13, J14, J15
JUMPER RES500 1 R4
PCB FASTON FASTON.25 6 CON4, CON5, CON6, CON7, CON8,
CON9
TIP31C TO220 1 Q3
TIP32C TO220 1 Q2
OPEN AXIAL500 1 J1
Page: 1
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