Laney MXD30 Schematic
MXD30
Service InformationService Information
Laney
Classic British Amplification
Newlyn Road, Cradley Heath, West Midlands. B64 6B£
www.laney.co.uk
1
4N7 1 00V
MJACK
C46
G
SK1
A A
GG
Input
B B
+15V
D2
1N41 48
R3
10K
R54
1M
G
G
C6
-15V
47P 5 0V
+15V
U1A
TL07 2
D1
-15V
R1
1N4 148
22K
C4
270P 250V
C5
220N 63V
R4
4K7
G
FootSwitch
G
C C
D D
+5V
C12
470U 16V
G
C2
47U 5 0V
G
C1
E E
47U 5 0V
-15V
D6
5V1 Z D0. 5W
G
LN14
0R0
1
+15V
R12
1K
C27
100N 63V
C26
100N 63V
+15V
D10
15V Z D1. 3W
15V Z D1. 3W
D9
Value : 100R 2W5FP
-15V2
R35
FP
100R 2W5 FP
R34
FP
Power Led
2
R14
100K
CD4069UBE
+5V
C7
R17
1 2
U2A
150K
22N 100V
Clean Channel Volume
C8
100N 63V
VR1
100K A6S
SK3
SJACK
Channel Select
LN8
LN7
0R0
0R0
+21V
-21V
C42
2200 U 25V
C41
2200 U 25V
-21V
G
G
G
LN2
0R0
SW1A
2P2WP S
D17
LED3M MR
R50
4K7
G
G
2
100N 63V
C10
1N 10 0V
SW1B
2P2 WPS
+5VDSP
10N 1 00V C43
C14
100K A6 SD
G
-15V
R13
10K
C30
100N 63V
G G
1N40 07D14
1N40 07D13
1N40 07D15
1N40 07D16
Drive Channel
Q3
VR2A
2N38 19
D8
1N41 48
G
Drive On
R7
1K
D7
3V9 Z D0.5W
G
U4
7805
C32
10U 5 0V
G
3
4N7 1 00V
C17
R18
47K
C13
R16
47K
100N 63V
R15
100K
-15V
D5
LED3M MG
R10
2K2
TS1
BC307
G
Programming Header
PTA0
PTA1
PTA2/IRQ
PTA3
PTA4
PTA5/OSC
FX Ret urn
FX Send
R53
INOUT
100R 2W5
GND
HD4
123
HD3WL
G
3
R19
1M
U2B
3 4
CD4069UBE
G
C9
100N 63V
R11
G
100K
R9
470K
HD2
123456
123456
+5VDSP
G
HD1
+21V
These items not on pcb
MAINS TRANSFORMER
C18
100N 63V
VR2 B
100K A6 SD
-15V
R6
10K
TS2
BC307
G
SW3
16PGR Y
1
2
3
4
+15V
AC Line(Live)
Transformer Primary
AC Inp ut (Ne utral )
4
R24
1M
47N 1 00V
U2C
C20
R23
Q2
2N38 19
100K
2N2 1 00V
C19
D4
1N41 48
R20
100K
5 6
R22
22K
CD4069UBE
C15
220N 63V
R8
100K
R5
33K
C11
100N 63V
G
DSP Pr ogram Select
C
G
+15V2-15V
115V = T 500mA
230V = T 250mA
(Fuse integral to IEC inlet
Mains Switch
Flame proof resister
FP
Must only be replaced with same type and rating
Indi cate s s afet y cr itic al c ompon ent
Must only be replaced with approved type
4
R21
1M
U2D
9 8
CD4069UBE
Black(Brown)
Fus e
White (Blue)
C16
47P 5 0V
CD/Line In
Mains In
IEC Inlet
22N 1 00V
5
C22
R25
100K
C21
47P 50V
G
G
Master Volume
SK2
PHO NOSTV
Top
G
G
Bot
Green/Yellow
Chassis
Revi sion Hist ory
5
100K A6S
VR3
R45
22K
R46
22K
6
G G
R33
C29
C24
22N 1 00V
R28
10K
G
R38
100K
G
TL07 2
C36
10U 5 0V
R40
100R
15K
R32
10K
LN6
6
47N 1 00V
U3B
+21V
0R0
U5
TDA20 50
-21V
R41
1K
Max On/Off
SW2A
LN11
2N38 19
2P2WP S
R26
100K
G
R48
470R
C39
220N 63V
R43
47R
R27
0R0
100K
1N41 48
R55
1K
C44
47N 1 00V
G
G
HD2WL
R44
4R7 2W5
C38
220N 63V
G
R47
0R4 7 2W5
G
BLT
Industri es
D3
FX Level
HD3
C23
G
-21V
C40
220N 63V
G
R42
10K
C37
22N 1 00V
G
22N 1 00V
+15V
R31
U3A
-15V
10K
+21V
-21V
D12
1N41 48
D11
1N41 48
4K7
C34
1U 63 V
C35
1N 10 0V
TL07 2
R30
R29
10K
G
7
C3
47P 50V
R2
100K
Q1
G
R49
47R
VR7
4K7B 6S
Loudspeaker
U1B
TL07 2
LN1
0R0
G
R39
100K
SK4
SJACK
-
12
+
Titl e
MXD30
Numbe r Revis ionSize
A2
Date: 15/05/2003 Sheet of
Fil e: C:\ Documen ts a nd Set tings \. .\9386 _3.S ch Draw n By:
7
R52
LN3
0R0
100K
LN12
0R0
R36
3K3
100N 63V
9386 3
C33
3N3 5 0V
C31
220N 63V
220N 63V
C25
C28
8
C45
47P 50V
R51
100K
-15V
U6A
TL07 2
+15V
G
Treble
R37
VR6
22KB 6S
33K
Bass
VR4
100K A6 S
VR5
2K2B 6S
Mid
G
119386_3.Sch
Rich Thompson
8
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