17
17
16
16
15
15
14
14
13
13
12
12
11
11
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
I
I
J
J
K
K
L
L
M
M
N
N
O
O
P
P
Q
Q
R
R
S
S
T
T
U
U
V
V
of
Filename:
PCB#
Sheet
5
1
Product
Date:
Rev:
YsType:
X8040V16sch.sch2006
X8040
Input/Pre
Tue Jan 21, 2020
V01
.
400V
1N
C82
RA
D .2
in
1N5
C37
200V
400V
DNS
C85
10N
400V
C17
W1
.
BLK
TO W4
W2
.
YEL
TO W3
P1:A
4425
M
15A
500K
DRIVE
R4
1/4W
.
47K
R7
1/
4W
.
1K5
R6
1/
4W
.
249K
R1
1/
4W
.
113K
R10
1/
4W
.
120K
R8
1/
4W
.
120K
R15
1/
4W
.
47K
1N
C31
50V
R114
1/4W
.
100K
R9
1/
4W
.
120K
R12
1/
4W
.
1K5
470N
C27
63V
R11
1/4W
.
113K
100V
220P
C35
DOWN
UP
S1:A
3522
Modern
Alternate
C19
250V
100N
R21
1/4W
.
100K
R56
1/4W
.
113K
400V
2N2
C34
R57
1/4W
499K
MINI MF
R58
1/4W
499K
MINI MF
33N
C21
100V
C20
47N
100V
C32
400V
1N
R16
1/
4W
.
1M
DOWN
UP
S1:B
3522
Alternate
Modern
C15
50V
22U
R17
1/
4W
.
1K5
C24
400V
22N
R24
1/4W
.
47K
R20
1/
4W
.
100K
R22
1/4W
.
100K
C71
470P
100V
RING
J1
INP
U
T
1N
400V
C80
1/
4W
.
1M
R2
W20
TO W25
.
RED
1/
4W
.
1K5
R3
C1
2U2
63V
3700
K2:B
4424
M
1B
100K
TREBLE
P8:A
4425
M
15A
500K
BASS
P7:A
4423
M
15A
20K
MID
P6:A
V2:A
Val
PRE-AMP
2X_TRIODE_HCT
4425
M
15A
500K
CLEAN VOLUME
P9:A
R79
1/
4W
.
113K
4423
M
15A
20K
MID
P4:A
4425
M
15A
500K
BASS
P3:A
4424
M
1B
100K
TREBLE
P2:A
1/
4W 68K
R52
.
R53
1/
4W
.
47K
1N5
200V
C18
C22
47N
100V
47N
100V
C23
R14
1/4W
100K
3700
K1:A
W4
.
BLK
TO W1
W3
.
TO W2
YEL
330N
C26
63V
This part is stuffed ONLY
on M613 (YCV50BLUE)
This part is stuffed ONLY
on M581 (YCV40)
and M645 (YCV4050)
S6:
B
3522
UP
Alternate
DOWN
BRI
G
HT
C16
250V
100N
400V
1N
C33
R13
1/
4W
.
47K
R19
1/
4W
.
470K
R112
1/4W
.
27K
R23
1/4W
.
100K
R18
1/
4W
.
113K
R5
1/4W
220K
MINI
C81
1N
400V
UP
DOWN
BRIGHT
S6:A
Alternate
3522
3700
K1:B
4425
M
15A
500K
MASTER
P5:A
3N3
100V
C83
V2:B
Val
PRE-AMP
2X_TRIODE_HCT
YCV4050 M645
V1:B
2X_TRIODE_HCT
Val
PRE-AMP
3700
K2:A
V1:A
2X_TRIODE_HCT
{Body}
Val
PRE-AMP