YORKVILLE SR 300, Service Manual

Page: 4 / 6

BC560
Q3
1/2
TLO72
U2
2 3
1
680K
R8A
10K R7A
1K
R9A
OUT
IN
SW2
4
5
6
YORKVILLE
NAME:
PCB#&VER: MODELS:
SCH ISSUE:
TITLE:
DATE:
DWG_1_OF_2
M1085
SR-300
M1085.SCH OCT/08/99
INPUT/PREAMP
1.40
100n C8
1K
R38B
1K5 R10
GREEN
LD1
470R R9
16V 33U
C10B
OUT
IN
SW2
1
2
3
1K
R38A
100n C10
15K
R7
100n C9
16V
500mW
ZD3
16V
500mW
ZD2
MJF6388
Q1
15K
R6
MJF6668
Q2
1/2
TLO72
U2
6 5
7
16V 33U
C10A
YEL
LD3B
2K R30B
100n C21
100n C18 100n C19
100n C16 100n C17
100n C14 100n C15
100n C13 100n C12
D1B D1A
1K5 R35B
953R R23B
3K
R39B
10M
R17B
OUT
IN
H.P.F
SW1
4 5 6
91K
R20B
1K5 R35A
100K R31A
680K
R8B
953R R23A
BC550
Q1A
100R
1W
R5
100R
1W R4
100K R31B
220n
C7B
220n
C9B
12K
R34B
27K
R33B
10K
R27B
10M
R17A
OUT
IN
H.P.F
SW1
1 2 3
91K
R20A
220n
C7A
220n
C9A
60K4_1% R21B
133K1%
R22B
CLP
RED
LD4B
12K
R34A
27K
R33A
20K0 R26B
180K R28B
25V
100u
C13B
10u
16V
C12B
PIN 11
D
IABC
1/2
LM13600
U3
13 15 14
16
12
91
0
BC560
Q5B
10p C5B
10K
R27A
9K760
R3B
1n C1B
1/2
TLO72
U1
6 5
7
953R
R1B
953R
R2B
9K760
R4B
1n C2B
9K760
R5B
9K760
R6B
CW
25A
10K P1B
10u
16V
C3B
18K
R13B
10K
R29B
2N5638 Q3B
SRT
BAL.
INPUT
JB1B
1 2
3 4
5 6
100K R10B
60K4_1% R21A
133K1%
R22A
20K0 R16B
D2B
1N5240BRL
10V D6B
1K
R32B
CLP
RED
LD4A
20K0 R24B
D4B D3B
20K0 R25B
10K R7B
BC550 Q1B
2K R30A
20K0 R26A
180K R28A
25V
100u
C13A
10u
16V
C12A
10K
R37B
100R R14B
100n C20
27K R12B
43K R19B
91K
R18B
47n C6B
82n
C8B
1K
R9B
100n C7
GRN
LD2B
50V
22u
C11
1/2
TLO72
U6
6 5
7
1/2
TLO72
U5
6 5
7
4K7 R36B
470R R8
470p C22B
PIN 11
D
IABC
1/2
LM13600
U3
4 2 3
1
5
87
1/2
5532
U4
6 5
7
D5B
BC560
Q5A
1/2
TLO72
U7
6 5
7
10p C5A
18K
R13A
10K
R29A
47K R40B
47K R40A
2N5638 Q3A
22M R15B
20K0 R16A
D2A
1K
R32A
20K0 R24A
D4A D3A
20KO R25A
HEATSINK
HEATSINK
"P22" STYLE
BC560
Q2B
10K
R37A
YEL
LD3A
100R R14A
22M R15A
27K R12A
43K R19A
91K
R18A
47n C6A
82n
C8A
1/2
TLO72
U6
2 3
1
1/2
TLO72
U5
2 3
1
220K R11B
220K R11A
4K7 R36A
470R R11
1/2
5532
U4
2 3
1
100K R10A
D5A
SRT
BAL.
INPUT
JB1A
1 2
3 4
5 6
10u
16V
C3A
CW
25A
10K P1A
9K760
R6A
9K760
R5A
1n C2A
9K760
R4A
953R
R2A
953R
R1A
GRN
LD2A
1/2
TLO72
U1
2 3
1
1n C1A
9K760
R3A
1/2
TLO72
U7
2 3
1
BC560
Q2A
33u
16V
C11A
33u
16V
C11B
BC560
Q4A
3K
R39
BC560
Q4B
25 24 23 22 21 20 19 18 17 16 15 14 13 12 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 OCT/08/99 MAR/31/99 NOV/24/95
V
V V V V V V V 1.40 1.30 1.20
N
N N N N N N N HEATSINK_SYMBOL_ADDED UPDATE_POTS .
SR-300
M1085.SCH_DATABASE_HISTORY
1N5240BRL
10V
D6A
470p C22A
DGS
2N5638
BC550C
CBE
BC560C
MJF6388 MJF6668
E
C
B
+55V
KIL
KIL
KIL
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GNDGND
GND
GND
GND
GND
GND
GND
-15V
-15V
-15V
-15V
-15V
-15V
-15V
-15V
I/P"A"
CLP1"A"
-55V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
+15V
I/P"B"
REDREW OUTPUTS TO MATCH PWR AMP SCHEM.
(TO AMP "B")
(TO AMP "A")
-13V
-13V
4.5V 4.5V
OF AMPLIFIER
OF AMPLIFIER
TO INPUT
TO INPUT
POWER
OUTPUT
FOR FULL
1.4VRMS
CLP2"A"
4
4
3
3
2
2
1
1
CLP2"B"
POWER ON
CLP1"B"
SIGNAL
SIGNAL
LIMITER
(TO AMP "A"&"B")
ALL UNMARKED DIODES ARE IN4148
STEREO/ GOLD TIP&RING JACK
GOLD TIP&RING JACK
"B" "A"
CHANNEL CHANNEL
MONO
LIMITER
WILL WORK IN MONO IS CONNECTED UNIT IF EITHER INPUT JACK NOTE:
PIN 1
PIN 1
A RIBBON CABLE TO THE REAR PCB WITH PCB WHICH IS CONNECTED LOCATED ON THE FRONT THE DOTTED LINE ARE COMPONENTS INSIDE
LIMITER
LIMITER
U:\SR300IP2.PRN