YORKVILLE
NAME:
PCB#&VER:
MODELS:
SCH ISSUE:
TITLE:
DATE:
M1085
SR-300
M1085AMP.SCH
SEP/30/2002
AMPLIFIER_150W
1.70
MJE15030
Q8L
2u2
63V
C3L
1n2
C12L
MJ15031
Q10L
MJL21193
Q9L
MJL21194
Q11L
33R
R29L
1n
C11L
100K
R5L
100K
R6L
S
R
T
USE
GOLD
120R
R19L
390R
R43L
3R9
2W
R38L
HEATSINK
HEATSINK
16V
1N5246A
D8L
D30L
BC560
Q6L
16V
1N5246A
D9L
D16L
270K
R50L
270R
R14L
D15L
D2L
A
C
NC
E
C
B
4N35
U2L
1
2
3
4
5
6
0R15
5W
R31L
0R15
5W
R33L
1/2
33078
U1L
6
5
7
20K
R12L
D13L
D1L
MPSA56
Q5L
D14L
68R
R36L
100p
C9L
1N5402
D11L
1N5402
D12L
390R
R13L
D17L
100n
C4L
100n
C5L
MPSA06
Q4L
750R
R15L
BAT85
D3L
1
5uH
L1L
1
220n
C8L
5
BC560
Q1L
33pF
C2L
1/2
33078
U1L
2
3
1
7K96
R3L
681R
R4L
4K12
R1L
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
SEP/30/02
OCT/08/99
.
APR/27/99
MAR/30/99
DEC/08/95
NOV/24/95
.
JUL/12/95
V
V
1.70
1.60
.
1.50
1.40
1.30
1.20
.
N
N
CORRECTION_R27L/R28L->1/8W-FLM-PRF
HEATSINK_SYMBOL_ADDED
R51L,Q15L,D30L
PC#5890_RT1L_100K->10K_ADD_R50L,
R11L_15K->12K
PC#4971
.
SR-300
M1085PA.SCH_DATABASE_HISTORY
10R
1W
R37L
3K16
R25L
3K16
R26L
33R2
R21L
274R
R20L
274R
R23L
33R2
R24L
10K
RT1L
BC550
Q7L
6K98
R18L
D5L
D6L
BC550
Q2L
330u
25V
C6L
100u
25V
C7L
2K2
2W
R30L
2K2
2W
R35L
D7L
D10L
BAT85
D4L
MPSA56
Q3L
390R
R10L
10K
R8L
12K
R11L
33u
16V
C1L
CW
4K7
A
R9L
10R
R46L
D26L
D27L
CSA
4n7
2
CSA
22n
T2.5A
13A/85C
T10A
CSA
4n7
C1
EY1
TB7
TB5
TB6
TB3
TB2
TB4
TB1
T10A
63V
2u2
C6
D7
2M2
R3
63V
1u
C5
10K
R2
22VZ
5251B
ZD1
CSA
22n
C2
5A-SB
F1
13A/85C
BR1
S1
10A-SB
F3
10A-SB
F2
IN4004
D6
2K2
R1
50Hz
370VA
#1248E
C4
63V
4700u
37K9
R2L
PX6A02
D3
PX6A02
D4
MJF6668
MJF6388
E
C
B
MPSA06
EBC
MPSA56
3
DSG
2N5638
BC550C
CBE
BC560C
10K
R42L
D25L
MJL21194
MJL21193
E
C
B
TP
BCE
MJE15031
MJE15030
4
C3
63V
4700u
3
PX6A02
D1
2
330u
25V
C23L
IN4004
D5
60Hz
370VA
#1248
T1
PX6A02
D2
33R
R44L
10R
R47L
33R
R45L
10N
C10L
33K
R51L
BC550
Q15L
10N
C13L
HEATSINK
HEATSINK
HEATSINK
HEATSINK
1/8W
150R-FP
R27L
1/8W
150R-FP
R28L
CLP2
GND
GND
GND
GND
GND
GND
KIL
+16V_BAT
+16V_BAT
-16V_BAT
O/P
O/P
-55V
-55V
-55V
+55V
+55V
+55V
+55V
AMP-IN
AGND
AGND
AGND
AGND
AGND
CIRCUIT WITHIN BOX IS NOT
ON POWER AMP BOARD
ADDED BATTERY BYPASS CIRCUIT
PIN 8 U1
ADDED O/P JACKS CORRECTED I/P WIRES
1.10
D27L, R43L. R19L FROM 510R TO 120R
PC#4850/4851 REMOVE R7L, C13L ADD D26L
1. ADJUST R9 ACCROSS TP1&TP2 FOR
4.5 mV BIAS
N.A. VERSION
EXPORT VERSION
230V A.C 50HZ LINE
BLUE
GRN/YEL
BROWN
-21V
-18V
ENCLOSE CIRCUITRY IS OFF-PCB.
ENCLOSE CIRCUITRY IS OFF-PCB.
CHASSIS
CHASSIS
120V A.C 60HZ LINE
GREEN
WHITE
BLACK
GAIN = 6
5. ALL UNMARKED DIODES IN4148
will have a "R" suffix for
4. Reference with a "L" suffix
3.
0.1%
0.1%
0.1%
0.1%
MX2L
MX1L
4V RMS
the right channel amplifier.
TEST POINT
HEAT SINK
2. Q3 IS THERMALLY COUPLED TO
NOTES:
-0.58V
INPUT
150 WATTS @ 4R
25.4VRMS
+0.60V
-0.58V
-0.85V
+.67V
CONNECT TO M1085
AMP-REF.
CLP1
PREAMP PCB
4
3
2
1
4
8
U:\M1085V17.PRN
