Mackie HD1501, Service Manual

Page: 33 / 40

0020664-XX
SCHEMATIC,
500/300
WATT
2
DWG
FILE:
NONE
SCALE:
D
B C D
87
6
5
43
1
D C
B
A
REV.
OF
SHEET
1
2
SIZE
DWG.
NO.
3
4
5
6
7
A
8
2
TECHNOLOGIES INC. WOODINVILLE WA. USA
2
Natural Frequency adj.
Natural Frequency adj.
CLASS D AMPLIFIER
* SEE TABLE, SHEET 1
+55V
for
300
watt
-55V
for
300
watt
+55V for 300 watt
-55V
for
300
watt
* * * *
F01
FOR
-04
ASSY
J1
IS
VERTICAL
PER
BOM
D
5
BAS21
D
6
BAS21
D
1
BAV99
R2
7K50
R1
10K0
R3
7K50
R4
10K0
R5
7K50
R6
7K50
R7
2K00
C6
100uF
16V
C9
1000PF
C28
100pF 200V
C10
1000PF
R10
100
R13 499
R14 499
1
VDD
2
CSD
3
IN
4
VSS
5
NC
6
VREF
7
OCSET
8
D
T
16
CSH
15
VB
14
HO
13
VS
12
NC
11 VC C
10
LO
9
COM
U3
IRS20957S
C15
47PF
C25
0.1uF
200V
C11 4.7uF 25V C12 4.7uF 25V
R40
20K0
R39
20K0
Q1
Q2
C17 10UF 16V
C16
.33UF
16V
R37 3K9 .5W
R28
20
R29
20
R20
6R81
.25W
R11 4.7
R12
4.7
R19
3K01
R21 6R81
.25W
C26
0.1uF
200V
L1
24uH
R33
1K0
C14 .01
C13
.01
C50
.1UF
50V
C49 .1UF 50V
R18
6K98
R17
3K01
R26
6K98
R27 3K01
R22 51K1
.25W
R25 3K01
R9 1K
R23
10K0
R24 6K98
R15 100
R52
7K50
R51
10K0
R53 7K50
R54
10K0
R55
7K50
R56
7K50
C56
100uF
16V
D
3
1N4148W
D
4
S1B
R34
20K0
C7
220PF
D13
BAS21
D14 BAS21
D
9 BAV99
R57
2K00
C59
1000PF
C78 100pF 200V
C60
1000PF
R60 100
R63 499
R64 499
1
VDD
2
CSD
3
IN
4
VSS
5
NC
6
VREF
7
OCSET
8
D
T
16
CSH
15
VB
14
HO
13
VS
12
NC
11 VC C
10
LO
9
COM
U5
IRS20957S
C65
47PF
C75
0.1uF
200V
C61 4.7uF
25V
C62
4.7uF
25V
R89
20K0
R90
20K0
Q3 Q4
C67 10UF
16V
C66 .33UF 16V
R87
3K9 .5W
R78
20 R79
20
R70 6R81
.25W
R61 4.7
R62
4.7
R69
3K01
R71 6R81
.25W
C76
0.1uF
200V
L3
24uH
R83
1K0
C64 .01
C63 .01
R68
6K98
R67
3K01
R76
6K98
R77 3K01
R72 51K1
.25W
R75 3K01
R59
1K
R73
10K0
R74 6K98
R65 100
D11
1N4148W
D12 S1B
R84
20K0
C57
220PF
D
2
BAT54S
D10
BAT54S
C69
4.7uF
25V
C70 4.7uF
25V
C20 4.7uF
25V
C19
4.7uF
25V
R16 0.0
R66 0.0
D
7
1N4148W
D8
1N4148W
C18 470PF
C22
470PF
C21
47PF
R30 22
1W
R31 22
1W
C23
47pF 200V
C24 47pF 200V
C68
470PF
C72
470PF
C71
47PF
D15
1N4148W
D16
1N4148W
R81 22
1W
C74 47pF
200V
R80
22
1W
C73 47pF 200V
R43
20K0
C8
100PF
C58
100PF
R93
20K0
C34 100UF 100V C84
100UF 100V
C83 100UF 100V C33 100UF
100V
C79 0.68uF 250V
C29 0.68uF
250V
R32 2K2
1W
R82
2K2
1W
R36
10 OHMS
5W
R35
10
OHMS
5W
R85
10 OHMS
5W
R86
10 OHMS
5W
R42
20K0
R41
20K0
C30 0.68uF 250V
C80 0.68uF 250V
R91
20K0
R92
20K0
TP1
TP2
TP3
TP4
2 3
6
U4-A
TLC081
4 7
U4-B
TLC081
2 3
6
U2-A
TLC081
4 7
U2-B
TLC081
2 3
1
U1-A
NJM4580M
6 5
7
U1-B
NJM4580M
8 4
U1-C
NJM4580M
J1-1 J1-2 J1-3 J1-4 J1-5 J1-6 J1-7
C1 560PF
C51 560PF
C3
220PF
C52
220PF
C53 220PF
C2
220PF
R44
10K0
R45 100K
R96 10K0
R47
10K0
R97
10K0
R46 10K0
R88
51K1
.25W
R38
51K1
.25W
D26 MMSZ5250B D27 MMSZ5250B
D28
ES1G
R48
0.0 .25W
R98
0.0 .25W
D29
ES1G
-5V
+5V
+15V
+15V
-15V
+5V
-5V
+15V
+5V +5V
+75_V -75_V
PWR_GND
CH1_OUT +VCC
SD
CH1_DC
CH2_DC
SD
+VCC
CH2_OUT
PWR_GND
-75_V +75_V
+75_V
Page 33 of 40
HD1501 SERVICE MANUAL
Page 33 of 40
0020664-XX SCHEMATIC 500/300 W CLASS D AMP (CLASS D AMPLIFIER)