YORKVILLE TRAYNOR YCS50 Service Manual page 9

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+
R208X
SOLID
5 WIR
V3:C
LOW+
LVGND
2X_TRIODE_HCT
{Voltage}
V2:C
V1:C FIL-
2X_TRIODE_HCT
2X_TRIODE_HCT R210X
{Voltage}
{Voltage} SOLID R209X
6
SOLID
WIR
FIL-
WIR
4
W21_:D 8 8 W21:D
LVGND LVGND
3700
3700
7
OD Stage
K2:B
+225V
. K1:B
2M2
R114
R9X
113K
8
.
10N
C13
100V
W20:G
8
.
Val
220P
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
8 W20:H . MINI 63V
8
W20_:H 8
GND
10
GND
11
A B C
D E F G
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:A S1:B
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
. .
220K 2M2
1/4W 1/4W
R27 R113
+225V
470P
R10X
C15X
113K
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
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
GND
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
To_PowerSupply
W5:D
-15V 4
4 W5:C
+15V
W5:B
4
LVGND
W5:A
LVGND 4
K L M
N O P
8 W20:F
NET00142
3
W21_:C 8 STANDBY
GND
CLN_OUT_PL
NET00142
1
W30:A 8 STANDBY
2
W30:B 8
FIL-
3
W30:C 8 LOW+
4
W30:D 8 GND
5
W30:E 8
+225V
6
W30:F 8 SPLITTER
7
W30:G 8
PGRID
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: Thu Dec 06, 2007 Thu Dec 06, 2007 Rev: Rev: 1.01 1.01 YsType: YS1067,4 YsType: YS1067,4
Filename: Filename: M1294V200sch.sch2002 M1294V200sch.sch2002
N O P
Q
1
2
3
4
5
6
7
8
9
10
1 1 of of 4 4
11
Q