Laney MXD15 Schematic
MXD15
Service InformationService Information
Laney
Classic British Amplification
Newlyn Road, Cradley Heath, West Midlands. B64 6B£
www.laney.co.uk
1
4N7 1 00V
MJACK
C40
G
SK1
A A
B B
GG
Input
R5
10K
R4
1M
G G
+15V2
C8
-15V
47P 50V
D1
1N41 48
D2
1N4148
G
+15V2
TL072
-15V
R2
C5
270P 250 V
C6
220N 63V
R1
4K7
U1A
22K
To DSP Board
C C
D D
Flame proof resist er
FP
Must only be replac ed with same type and rat ing
Indicates safety c ritical component
Must only be replaced with approved type
1
C11
22N 100V
Clean Channel
C7
100N 63 V
HD3
PTA0
PTA1
PTA2/IRQ
PTA3
PTA4
PTA5/OSC
FX Retu rn
FX Send
HD1
2
R10
150K
123456
123456
2
+5V
-15V
G
+15V2
R9
100K
CD4 069UB E
1 2
U3A
VR1
100K A6S
G
+5V
147
G
100N 63V
C10
1N 10 0V
1
2
3
4
-15V
LED1
LED3M MG
C17
VR2 B
100K A6SD
G
G
R6
33K
SW2
16P GRY
DSP Program Select
C
G
+5V
C13
100N 63V
G G
R7
2K2
R8
100K
C15
100N 63 V
3
SW1B
2P2 WPS
G
Drive Channel
C14
R11
47K
4N7 1 00V
R12
47K
U2
7805
GND
C12
10U 5 0V
G
3
4
R13
1M
U3B
3 4
CD4069UBE
+21V +15V
INOUT
+15V2
G
Power Led
C16
100N 63 V
VR2 A
100K A6SD
G
CD/Line In
G
C2
100N 63V
C1
100N 63V
G
-21V
SK2
G
PHO NOSTV
R37
4K7
Top
Bot
C4
47U 5 0V
C3
47U 5 0V
LED2
LED3M MR
R18
1M
U3C
5 6
R15
22K
CD4069UBE
C20
220N 63V
22K
R33
22K
R35
LN4
0R0
-15V
4
+21V
-21V
D4
15V Z D1.3W
15V Z D1.3W
D3
100R 2W5FP
Channel Switch
47N 100V
C19
R19
100K
C21
2N2 1 00V
1N41 48
D6
C27
D5
1U 63 V
1N41 48
C26
1N 10 0V
LN6
0R0
G
R21
FP
100R 2W5FP
R22
LN8
FP
0R0
-21
Revision Hi story
R24
100K
+21V
-21V
R16
100K
C28
10U 5 0V
LN7
0R0
R26
100R
G
C38
2200 U 25V
G
C37
2200 U 25V
5
C18
47P 50V
R14
1M
U3D
9 8
CD4 069UB E
+21V
U4
TDA20 50
-21V
-21
R28
10K
R29
1K
5
C22
R20
100K
22N 1 00V
C23
47P 50V
Drive Volume
C34
R32
470R
C31
220N 63 V
G
C32
220N 63 V
G
R36
47R
R34
C33
0R47 2W5
22N 1 00V
G
G
1N40 07D7
1N40 07D10
10N 1 00V C36
1N40 07D9
1N40 07D8
G
G
47N 1 00V
G
HD2W L
R30
4R7 2W5
C35
220N 63V
G
R31
47R
G
HD2
VR3
100K A6S
R17
220K
12
Loudspeaker
HD3WL
G
SW1A
2P2 WPS
+
HD4
6
C9
47P 50V
R3
100K
0R0
LN3
G5
SK3
SJACK
U1B
LN1
0R0
R121
100K
TL072
LN2
0R0
G
These items not on pcb
AC Line(Live)
123
MAINS TRANSFORMER
BLT
Industries
6
Transformer Primary
AC Input (Neutral)
Title
A3
Dat e: 15/0 5/200 3 Shee t of
Fil e: C:\D ocument s an d Sett ings\ ..\9 385_3 .Sch Drawn By:
7
C39
47P 50V
R38
100K
0R0
0R0
TL072
G5
R25
100K
115V = T500mA
230V = T250mA
U5B
Mains Switch
LN5
LN10
R23
3K3
Black(Brown)
SP1SP2
F1
FUSEIN
(Fuse and Spades on PCB)
White (Blue)
HCM15D
Numb er Revis ionSize
9385 3
7
C29
3N3 5 0V
C30
220N 63V
220N 63V
C24
C25
100N 63V
Mains In
IEC Inlet
119385_3.Sch
8
Treble
VR6
22KB 6S
Bass
VR4
100K A6S
VR5
2K2B 6S
Mid
G
Rich Thompson
8
-15V
U5A
TL072
+15V2
R27
33K
Green/Yellow
Chassis
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