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YORKVILLE Manuals
Amplifier
TRAYNOR YCS50
Service manual
Input Stage - YORKVILLE YCS50 Service Manual
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A
B
C
1
+200V
Input Stage
.
113K
R7X1
#18
#18
C21X
YEL
YEL
W25_
W25
100N
2
INPUT
INPUT
To_Input
To_Input
.
J15_
10N
Val
6541
C48
V1:B
100V
J15
R1X
2X_TRIODE_HCT
1/4W
6541
2K21
{Body}
.
3
R2X
R3X
1M
1K
.
.
47P
J1X
C94X
Input
100V
4
3682
To_IG
GND
GND
GRN
W11_
W26
W26_
BLK
GND
GND
BLK
#18
#18
LOW+
Gain/EQ[O3]
R208X
SOLID
5
WIR
V3:C
LOW+
LVGND
2X_TRIODE_HCT
{Voltage}
V2:C
FIL-
V1:C
2X_TRIODE_HCT
2X_TRIODE_HCT
R210X
{Voltage}
{Voltage}
SOLID
R209X
6
SOLID
WIR
FIL-
WIR
4
W21:D
W21_:D 8
LVGND
LVGND
8
3700
3700
7
OD Stage
K2:B
+225V
.
K1:B
2M2
R114
R9X
113K
8
.
10N
C13
100V
W20:G
8
.
220P
Val
500K
C43
V2:B
400V
2N2
15A
100V
C45
4425
2X_TRIODE_HCT
.
220K
{Body}
P5:A
9
R28
M
OD GAIN
OD_GR
OD_GR
7
470N
W20_:G 8
R70
R5X
1M
1K2
W20:H
.
MINI
63V
8
8
W20_:H 8
GND
10
GND
11
A
B
C
D
E
F
G
Gain/EQ[I4]
INPUT_PL
1
8
W20_:A
250V
INPUT_PL
3700
W20:A
8
R19
C9
1/4W
4N7
250V
220K
.
W20:B
R13
R20
8
GND
1/4W
1/4W
K2:A
47K
220K
.
.
2
8
W20_:B
GND
1N
C10
1U
400V
C7X
C1
63V
1N
400V
100K
1B
4424
C11
R11
47K
P1:A
1N
400V
M
TREBLE
.
C2
47N
100V
BRIGHT
BRIGHT
S1:B
S1:A
500K
3522
3522
15A
4425
P2:A
M
BASS
500K
15A
4425
C3
47N
100V
P4:A
M
CL GAIN
20K
15A
4423
P3:A
M
MID
Gain/EQ[O3]
.
.
220K
2M2
1/4W
1/4W
R27
R113
+225V
Gain/EQ[D8]
Gain/EQ[O3]
470P
R10X
Gain/EQ[F7]
C15X
113K
Gain/EQ[O3]
250V
.
1N
C14X
OD_OUT_PL
400V
C23
C22X
2
8
W21_:B
2N2
400V
100N
250V
C16X
2N2
400V
.
Val
R25X
V2:A
C17X
W21:A
8
1/4W
1N5
200V
120K
2X_TRIODE_HCT
.
.
{Body}
120K
R73
R23X
1/4W
120K
470N
.
R6X
1
R22X
1N
GND
1K
C20X
C19X
120K
C15X1
.
63V
.
400V
D
E
F
G
H
I
J
ALTERNATE
ALTERNATE
EQ Shift
EQ Shift
ALTERNATE
S8:B
S8:A
3440
3440
R52
1/4W
100K
.
R68
CLN/BOOST
220K
.
AMPLIFIER
+200V
Gain/EQ[D1]
470P
.
113K
C44
R7X2
250V
CLN_OUT_PL
Alternate
Alternate
C12X
5
8
47N
250V
CLN_GR
W20:E
.
Val
V1:A
2X_TRIODE_HCT
W20:C
{Body}
8
R18
BOOST LEVEL
1/4W
100K
R69
3
.
W20_:C 8
1/4W
R26
47K
220N
.
R4X
220K
R21X
1K5
C8X
CLN_GR
.
220K
.
63V
.
8
W20:D
4
W20_:D 8
GND
GND
C6
1N
400V
100K
1B
4424
P6:A
W21:B
8
R12
M
TREBLE
43K
.
OD_OUT_PL
C4
100N
63V
Alternate
500K
15A
4425
P7:A
GND
R152
M
BASS
82K
4N7
.
C24
M
250V
C5
47N
100V
20K
15A
8
W21_:A
.
R158
4423
Alternate
10K
22K
R71
P8:A
.
M
MID
H
I
J
K
L
M
Preamp Headers
6
W20_:F 8
NET00142
3440
S8:C
EQ Shift
INPUT_PL
GND
CLN_GR
EQ Shift
ALTERNATE
S8:D
OD_GR
3440
GND
_W20
GND
400V
OD_OUT_PL
C98
STANDBY
1N
LVGND
XF_P1
SPLIT_IN
GND
-FDBK
_W21
CLN_OUT_PL
W20_:E
Alternate
8
500K
R146
15A
1/4W
4425
100K
P19:A
500K
M
15A
4425
R14
1/4W
P16:A
100K
M
CL VOLUME
.
R9
100K
.
GND
R17
1/4W
47K
C85
.
1N
GND
R29
1/4W
180K
.
Alternate
Alternate
R150
+15V
C89
1/4W
10N
100V
100K
500K
.
BC550C
R151
15A
22K
4425
Q23
C18
.
100N
63V
P9:A
5101
OD VOLUME
TO92
C88
R41
150N
63V
100K
.
R148
R149
R24
1/4W
1/4W
4K7
8K2
82K
.
.
.
100N
-15V
C90
63V
GND
To_PowerSupply
W5:D
4
-15V
W5:C
+15V
4
W5:B
4
LVGND
W5:A
LVGND
4
K
L
M
N
O
P
8
W20:F
NET00142
Effects/Master[E10]
Gain/EQ[O3]
3
W21_:C 8
STANDBY
GND
CLN_OUT_PL
NET00142
Effects/Master[E10]
1
Gain/EQ[O2]
W30:A 8
STANDBY
Gain/EQ[D6]
2
W30:B 8
FIL-
Gain/EQ[B5]
3
W30:C 8
LOW+
4
W30:D 8
GND
Gain/EQ[D8]
5
Gain/EQ[F7]
W30:E 8
+225V
Effects/Master[J9]
6
W30:F 8
SPLITTER
Effects/Master[J8]
7
W30:G 8
PGRID
Effects/Master[J10]
8
W30:H 8
NGRID
R15
1/4W
47K
.
+15V
4N7
C83
TL072
250V
R115
U9:C
1/4W
R145
39K
.
1/4W
U9:A
100K
Alternate
.
.
6N8
C84
-15V
100V
R126
1/4W
1M
.
R147
24K
TL072
.
R116
D20
1/4W
4148
15K
C86
.
U9:B
400V
470P
50V
.
100K
1/4W
R133
GND
R74
C47
1/4W
4N7
250V
120K
.
C29
220P
100V
R43
1/4W
120K
.
+15V
C30
TL072
330N
63V
+225V
R72
+200V
U1:C
TO_PRE-OUT
1.0W
4K7
U1:B
.
GND
-15V
10U
C108
450V
GND
Product
Product
YCS50/90 Preamp
YCS50/90 Preamp
Gain/EQ
Gain/EQ
PCB#
PCB#
M1294
M1294
Sheet
Sheet
Date:
Date:
Mon Jul 20, 2009
Mon Jul 20, 2009
Rev:
Rev:
2.00
2.00
YsType:YS1067,4
YsType:YS1067,4
Filename:
Filename:
M1294V200sch.sch2002
M1294V200sch.sch2002
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This manual is also suitable for:
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Traynor ycs50
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