AV125.7-AV125.5
SERVICE MANUAL
B&K COMPONENTS, LTD.
2100 Old Union Road
Buffalo, New York 14227-2725
U.S.A.
6FKHPDWLFV
B&K COMPONENTS, LTD.
2100 Old Union Road
Buffalo, New York 14227-2725
U.S.A.
54321
W2 V+
PRE+
V+
PRE+
PRE+
D
C5
.12uF
R16
W3
CTRL
D1
C
W6
10K
1N4751
+
100uF 100V
R17
100K
C2
.12uF
R14
133
Q2
2N5087 M
Q3
2N5087 M
R12
221
C6
.12uF
Q9
2N5210
Q10
2N5210
P1
R13
221
500
R10
R11
47.5
1M
Q1
2N5416
C4
120pF
R1
3.01K
3.01K
3.01K
QN1
2SK1058
R2
QN2
2SK1058
R3
QN3
2SK1058
RP1
.47 5W
RP2
.47 5W
C9
6
D3
R28
1N965B
2N5401
100K
R31
10K
Q13
D
R30
OPEN
D2
1N4148
C
RP3
.47 5W
W1
CON1
CH1+
5
CH1-
4
GNDA
3
CH2-
2
CH2+
1
CH2+
CH2GNDA
W5
B
A
GND
W7
PRE-
PRE-
W4
V-
PRE-
V-
1 2 3 4 56
C13
+
10uF 25V
R27
1.5K
R32
Jumper
R26
33.2K
Q11
2N5210 M
R22
221
R7
R19
47.5K
Q5
+
C11
C7
.12uF
100uF 100V
C1
.12uF
Q7
2N5210
Q6
2N5210
R21
10K
221
2N5210 M
Q12
R24
R25
2.26K
2.26K
221
R23
C14
+
100uF 25V
R18
221K
Q4
2N5210
+
C3
100uF 25V
2N5210
R20 33.2K
R15
P2
500
R9
475
Q8
2N3440
R29
47.5
47.5K
+
C8
10uF 25V
R6
1.5K
R5
1.5K
R4
1.5K
RP4
.47 5W
RP5
.47 5W
RP6
QP3
2SJ162
QP2
2SJ162
QP1
2SJ162
Title
B
Date: 14-Aug-2002 Sheet of
File: C:\B&k_Data\7125_Amp_Bd\13315b00.ddbDrawn By:
7125 Amp Channels 1-2
Number RevisionSize
13315b01.sch
.47 5W
2 3
OUT A
D4
1N4751
R8
B
SBS/ESM
B
1K
A
V+_2
W2_1 V+_2
D
W3_1
CRTL_2
C
PRE+
PRE+
D1_1
R16_1
10K
1N4751
C9_1
+
100uF 100V
R17_1
100K
C2_1
.12uF
C6_1
.12uF
R12_1
221
R14_1
133
Q2_1
2N5087 M
Q9_1
2N5210
Q3_1
2N5087 M
Q10_1
2N5210
R13_1
P1_1
221
500
R11_1
47.5
R1_1
3.01K
R2_1
3.01K
R10_1
1M
Q1_1
2N5416
C4_1
120pF
R3_1
3.01K
54321
QN1_1
2SK1058
RP1_1
.47 5W
QN2_1
2SK1058
RP2_1
QN3_1
2SK1058
.47 5W
RP3_1
.47 5W
D3_1
R28_1
D2_1
6
R31_1
10K
1N965B
Q13_1
2N5401
100K
R30_1
D
OPEN
1N4148
C
W1_1
CH2+
GNDA
CH2-
W5_1
GND_2
CH2+
GNDA
CH2-
C13_1
+
10uF 25V
R27_1
1.5K
R32_1
Jumper
R26_1
33.2K
R22_1
Q11_1
2N5210 M
221
2N5210 M
Q12_1
R23_1
R24_1
R25_1
2.26K
2.26K
221
C14_1
+
100uF 25V
B
R7_1
10K
R19_1
47.5K
Q5_1
+
C11_1
100uF 100V
A
C1_1
.12uF
Q6_1
Q7_1
2N5210
2N5210
R21_1
R18_1
221K
Q4_1
2N5210
+
C3_1
221
100uF 25V
2N5210
PRE-
PRE-
W4_1
V-_2
1 2 3 4 56
V-_2
500
P2_1
R29_1
Q8_1
2N3440
47.5
R20_1 33.2K
R9_1
OUT B
R15_1
47.5K
+
C8_1
475
10uF 25V
R6_1
1.5K
R5_1
1.5K
R4_1
1.5K
QP1_1
2SJ162
RP4_1
.47 5W
QP2_1
2SJ162
RP5_1
.47 5W
QP3_1
2SJ162
RP6_1
.47 5W
D4_1
1N4751
R8_1
B
1K
A
Title
B
Date: 14-Aug-2002 Sheet of
File: C:\B&k_Data\7125_Amp_Bd\13315b00.ddbDrawn By:
7125 Amp Channels 3-4
Number RevisionSize
13315b02.sch
3 3
B
SBS/ESM
54321
V+ V+1
F1
V+
W7
FUSE
AON
D
CTRL-OUT
Q3
2.2K 5W
D9
R1
910 3W
TIP31C
1N965B
D3
D1
D7
1N4002
1N4002
1N4002
C3
+
15KuF 75V
GND-
W52
BR2
GND-GND+
GND-
CTRL-IN
R3
10K
Q1
2N5551
1N4148
.033uF
+
1K
R5
D4
1N965B
V-1V+1V-
D2
C5
C4
15KuF 75V
W1
W53
GND-
D6
1N4148
R10
133
W51
GND+
Q2 TIP32C
D11
1N4148
AC_BLUE
AC_YELLOW
C1
+
15KuF 75V
R7
R9
33.2K
Q4
2N5551
R2
R11
910 3W
910 3W
V+
R6
5.62
D5
1N4148
R8
1N4148
CON4 AC_IN
CON5 AC_IN
C2
+
W50
GND+
10K
D10
BR1
W4
GND+
C
D8
1N4148
CON6 NC
B
CON7 NC
15KuF 75V
CON3
12345
DEFEAT
AON
For Bypass Only-
W26
LED+
W25
GND
W27
GND
R4
JUMPER
J1
V+
V+
W2
V+
V+
W46
V- V-1
V+1
V-
V+
V-
W3
W5
V+1
V-
V+
V-
W47
W48
W19
F2
FUSE
F3
FUSE
AON
W20
F7
FUSE
F8
FUSE
AON
W21
F9
FUSE
F10
FUSE
AON
W22
F11
FUSE
V-1
V-
W6
V-1
V-
W49
W28
AON
W29
V-
W13
W30
V+
W8
W31
AON
W32
V-
W14
W33
V+
W9
W34
AON
W35
V-
W15
W36
V+
W10
W37
AON
W38
V-
W16
W39
AON
AON
AON
AON
6
F4
V+
FUSE
AON
F5
V-
FUSE
F6
V+
FUSE
AON
F12
V-
FUSE
F13
V+
FUSE
AON
F14
V-
FUSE
F15
V+
FUSE
AON
F16
V-
FUSE
D
C
B
A
1 2 3 4 56
Title
B
Date: 17-Jul-2002 Sheet of
File: C:\B&k_Data\7125_power_supply\13316-00.ddbDrawn By:
7125 POWER SUPPLY
Number RevisionSize
13316-00 -
11
SBS/ESM
A
321
4
D
RCA7RCA8
RCA6 RCA5 RCA4 RCA3 RCA2 RCA1
C
8
1234567
3738
3940
2930
3132
3334
3536
2122
2324
2526
2728
1112
1314
1516
1718
1920
CON1
B
GND
JP1
12345678910
8
1234567
CON2
D
C
B
A
Title
Number RevisionSize
A
Date: 17-Jul-2002 Sheet of
File: C:\B&k_Data\7125_RCA_Board\13333a00.ddbDrawn By:
7270/7125 INPUT RCA BOARD
13333a00
REV A
SBS
A
1 2 34
321
4
JP1
39 40
D
CH8+
CH7+
CH6+
CH5+
CH4+
CH3+
CH2+
CH1+
C
CON3
CH1-
5
4
3
2
CH1+
1
CH1
CON9
B
CH2-
5
4
3
2
CH2+
1
CH2
CON10
CH3-
5
4
3
2
CH3+
1
CH3
CON15
A
CH4-
5
4
3
2
CH4+
1
CH4
37 38
35 36
33 34
31 32
29 30
27 28
25 26
23 24
21 22
19 20
17 18
15 16
13 14
11 12
9 10
7 8
5 6
3 4
1 2
HEADER 2X20
CH5-
CH5+
CH6-
CH6+
CH7-
CH7+
CH8-
CH8+
CON4
5
4
3
2
1
CH5
CON11
5
4
3
2
1
CH6
CON12
5
4
3
2
1
CH7
CON16
5
4
3
2
1
CH8
SW1
CH2-
CH1-
SW-DPDT
SW2
CH4-
CH3-
SW-DPDT
SW3
CH6-
CH5-
SW-DPDT
SW4
CH8-
CH7-
SW-DPDT
STAR_GND
W1
R1
R9
R2
R10
R3
R11
R4
R12
R5
R13
R6
R14
R7
R15
R8
R16
2.26K
3.01K
2.26K
3.01K
2.26K
3.01K
2.26K
3.01K
2.26K
3.01K
2.26K
3.01K
2.26K
3.01K
2.26K
3.01K
CH2_BAL-
CH1_BAL-
CH4_BAL-
CH3_BAL-
CH6_BAL-
CH5_BAL-
CH8_BAL-
CH7_BAL-
CH1_BAL-
CON1
3
Channel_1
CH1+
2
1
F
CH3_BAL-
CON5
3
Channel_3
CH3+ CH4+
2
1
F
CH5_BAL-
CON6
3
Channel_5
CH5+
2
1
F
CH7_BAL-
CON13
3
Channel_7
CH7+ CH8+
2
Title
1
F
7125-7270 Balance Board
Number RevisionSize
A
Date: 17-Jul-2002 Sheet of
File: C:\B&k_Data\7125_Balance\13321-01.ddbDrawn By:
CH2_BAL-
Channel_2
CH2+
2
CH4_BAL-
Channel_4
2
CH6_BAL-
Channel_6
CH6+
2
CH8_BAL-
Channel_8
2
13321-00 Rev -
3
F
3
F
3
F
3
F
CON2
1
CON7
1
CON8
1
CON14
1
1 of 1
SBS
D
C
B
A
1 2 34
321
4
D
C
D
C
CON1
12345
W1
Ctrl
B
W2
GND
R2
Jumper
CON2
B
T
R3
Control I/O Board
Jumper
R1
Jumper
B
A
Title
Date: 17-Jul-2002 Sheet of
File: C:\B&k_Data\Ctrl_IO\13428-00.ddb Drawn By:
CONTROL I/O BOARD non-push button
Number RevisionSize
A
13428-00 REV -
SBS
A
1 2 34
Loading...