VCD
SHEAR
SHEAR
M578-1.00
C28
25V
100U
C27
25V
100U
C9
16V 4U7
R11
10K
C37
6N8
C38
150N
C12
27P
C11
1N
C14
47N
C10
100N
C3
100n
C5
1N
C2
100n
C4
1N
C35
100N
C34
100N
C8
27P
C15
680P
R14
47K
C13
3N3
R43
27K
R44
100K
R55
10K
R54
10K
R50
10K
R47
47K
R48
1K
J31
R22
15K
R46
4K7
R45
4K7
R37
1K8
R35
1K5
R36
1K8
J18
R8
4K99
R3
4K99
R6
562R
R7
4K99
R5
562R
R49
10K
R13
100K
R4
4K99
R9
120R
R27
470R
R2
470R
R10
180K
R21
10K
R56
2K7
R20
1K
TAB9
.
FUNCTION
TAB2
.
.
TAB4
.
.
TAB1
250TAB
.
TAB3
.
.
TAB10
.
FUNCTION
TAB8
.
FUNCTION
TAB7
.
SEC_IN
TAB6
.
SEC_IN
TAB5
.
SEC_GND
R38
0.5W 1K2
R39
0.5W 1K2
R31
5W
100R
R52
5W
22R
DOWN
BAR
D1
1N5402
DOWN
BAR
D2
1N5402
DOWN
BAR
D3
1N5402
DOWN
BAR
D4
1N5402
ZD2
16V
ZD3
16V
ZD4
16V
WHT
RED
JB4
#3460
J21
RTV
RTV
F1
0.8A-SB
#3414
AC_LINE
U1
TLO72
U2
33078
U3
TLO72
-
+
LED1
GRN
R1
470R
RTV
J12
J30
J5
J9
J20
J22
J11
J27
R29
20K0
J10
J19
C16
680P
R12
10K
KNOB
PART#
FUNCTION
REF
MODEL(S):-
AS_OF
F
F
TREBLE
BASS
GAIN-1
GAIN-2
P
P
#4420
#4420
#4418
#4417
N
N
.
.
.
JAN/2000
K
K
#8641
#8641
#8641
#8641
R
R
P4
P3
P2
P1
50KB-50KW
M578.PCB_POT_LIST
JB9
EFX-RTN
JB5
PHONE
JB2
RIGHT
JB7
MONO-IN-1
JB1
LEFT-MONO
JB8
EFX-SEND
P28
STYLE
$$2
J35
C22
1U
C30
4N7
250V
C32
22N
400V
R28
20K0
J16
C36
100n
D5
1N4004
J8
J17
C18
25V
100U
TOP
WIP
BOT
P4
B
50K
PT#4420
TREBLE
TOP
WIP
BOT
P3
B
50K
PT#4420
BASS
TOP
WIP
BOT
P1
5B
10K
PT#4417
GAIN-2
J6
J4
J7
J1
J2
J3
WC6
R15
47K
C23
220N
J32
C25
2200U
50V
C26
2200U
50V
R23
0.5W
10R
C21
1U
R25
0.5W
10R
C7
16V
100U
J29
J26
$$4
C6
33u
16V
R32
36K0
J14
R26
470R
R30
36K0
C19
47P
C20 63V
2u2
11
10
9
8
7
6
5
4
3
2
1
#
DESCRIPTION OF CHANGE
VER#
DATE
MODEL(S):-
D
D
D
D
D
D
D
APR/20/00
APR/2000
.
JAN/2000
V
V
V
V
V
V
V
10P3
1.0P2
.
1.P0
N
N
N
N
N
N
N
DELETE_D11->D14_C12_15P->27P
GROUNDS_UPDATED_RCA_JKS_WIRES->JMPR
POTS_CHANGED_TO_STYLE_28
PC#____DERIVED_FROM_M512
50KB
M578.PCB_DATABASE_HISTORY
TOP
WIP
BOT
P2
5C
10K
PT#4418
GAIN-1
WC3
CSA-0.8A/240V
CE-T400MA
WC1
C33
100N
R60
0.5W
4R7
RTV
RTV
RTV
PART#
SWITCH
R59
0.5W
4R7
WC2
C17
10u
16V
C40
180N
J28
R51
470R
.
PART#3660
U4
.
#6755
LM38x6
47N 250V
J23
J13
J25
J24
C1
47P
J33
J34
J15
N.B
AC HOT
AC RET
WHITE
TWEET(-)
GRN
GRN
PRIM
TRANS
RED
BLACK
GOLD-SLV
SPKR(+)
SPKR(-)
PRIM
TRANS
GOLD-TIP
USE T400MA #2462 FUSE
PRODUCTION NOTES
TO CHASSIS GND
4" GREEN
12" GREEN
ADD RTV TO ALL .2 SPACING ELECTROLYTIC CAPACITORS
4
3
2
1
TWO LEGS OF ALL PHONE JACKS MUST BE BENT FLAT TO THE PCB BEFORE SOLDERING
THIS SYMBOL INDICATES WHERE RTV IS TO BE USED BETWEEN THE COMPONENT AND THE PCB
.
BEND
BEND
PCB
JACK LEG
SOLDER
LED
GREEN
FOR S VERSION
FOR S VERSION
DO NOT STUFF C30
DO NOT STUFF C30
WC6 GRN/YELL WIRE FOR S VERSION
WC6 GRN/YELL WIRE FOR S VERSION
WC2 NO WIRE FOR S VERSION
WC2 NO WIRE FOR S VERSION
GREEN WIRES FOR N.A.
GREEN WIRES FOR N.A.
WC2 AND WC6
WC2 AND WC6
BLACK DOUBLE/INSUL. FOR S
BLACK DOUBLE/INSUL. FOR S
BLACK 18AWG WIRES FOR N.A.
BLACK 18AWG WIRES FOR N.A.
WC1 AND WC3
WC1 AND WC3
FOR S VERSION
VER 1.00
NO PART
NO PART
50KW
M578A
BLUE
WHITE
RED
BLACK
PT#7415
PT#7322
P:\578AV10.PRN