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
Product
.
Date:
Filename:
PCB#
M648-5V10sch.sch2002
YBA200
Tue Jul 04, 2006
M648
of
Sheet
Rev:
3
1
5V10
Product
.
Date:
Filename:
PCB#
M648-5V10sch.sch2002
YBA200
Tue Jul 04, 2006
M648
of
Sheet
Rev:
3
1
5V10
P32
GND
GND
GND
+560V
+560V
-15V
GND
R3
1/4W
1M
+15V
R12
1/4W
47K
+380V
+15V
1/4W
113K
R22
-BIAS
+15V
GND
GND
+267V
C66
100V
10N
+380V
+267V
+15V
GND
-DRIVE
TP4
-BIAS
TP3
+DRIVE
+267V
C12
400V
2N2
TP1
C40
50V
22U
TP2
3682
W14
BRN
PLT
XF_PCT
C17
50V
22U
R4
1/4W
47K
C70
100V
100N
R40
1/4W
47K
-15V
R26
1/4W
47K
R27
1/4W
4K7
+15V
C16
100V
100N
C1
63V
4U7
R2
1/4W
1K54
R1
1/4W
113K
LD3
MUTE
RED
5906
1/4W
68K
R112
R5
1/4W
47K
C69
63V
150N
R109
1/4W
1M
R6
1/4W
750R
C55
400V
1N
50V
C64
100N
R7
1/4W
113K
LD1
OPERATE
RED
6398
R119
1/4W
47K
S8:B
R90
1/4W
4K7
C6
100V
15N
R9
1/4W
100K
R11
1/4W
62K
R16
1/4W
220K
R89
1/4W
1M
R86
1/4W
1K2
C73
100V
47N
R17
1/4W
120K
C34
100V
6N8
R50
1/4W
470K
C8
250V
10N
C48
100V
220P
W27
WHT
PRE1
18AWG
R84
1/4W
113K
R85
1/4W
113K
W31
YEL
SPKR+
18AWG
S5:A
C9
250V
220N
R14
1/4W
113K
R13
1/4W
1K5
R77
1/4W
820R
Q16
5104
MPSA56
TO92
R81
1/4W
249K
R106
1/4W
10K
R64
1.0W
FLMP
10R
R78
1/4W
249K
R105
1/4W
10K
.
R63
1.0W
FLMP
10R
XF_S2
R30
1/4W
470K
C11
100V
33N
P4:A
4425
M
15A
500K
BASS
C10
63V
220N
C47
400V
22N
R62
5.0W
1K8
GND
C43
50V
22U
R72
1/4W
.
8K2
R66
1.0W
FLMP
10R
R107
1/4W
10K
R60
5.0W
1K8
S4:B
S4:A
-20dB PAD
3436
R19
1/4W
1M
R20
1/4W
1K
+267V
C13
400V
22N
R76
1/4W
820R
R80
1/4W
249K
R67
1/4W
18K
R68
1/4W
.
18K
-78V
R79
1/4W
249K
R31
1/4W
10K
C71
100V
10N
1/4W
470K
R23
W32.
BLK
SPKR-
18AWG
3682
W16
GRN
4ohm
W31.
YEL
SPKR+
18AWG
3682
W15
YEL
8ohm
3682
W13
BLUE
PLT
C21
50V
22U
R36
1/8W
FLMP
249R
R98
1/4W
470K
C15
100V
100N
W30.
GRN
GND
16AWG
3923
J5
DI OUT
S3:A
S3:B
3436
GND LIFT
W30
GRN
GND
16AWG
R97
1/4W
10K
W26
PRE2
BLK
18AWG
V1:A
Val
PreAmp
R25
1/4W
2M2
S2:B
R110
1/4W
2K
R111
1/4W
1M
R118
1/4W
3K3
R120
1/4W
470K
100V
C68
680P
R55
1.0W
470R
R95
1/4W
10K
B E
TO-92
C
BC550C
R10
1/4W
120K
R88
1/4W
1M
C35
100V
6N8
R51
1/4W
22M
R82
1/4W
200K
R83
1/4W
200K
S5:B
3436
PRE/POST
Q15
5104
MPSA56
TO92
R74
1/4W
820R
M
15A
P3:A
4423
20K
MID
R33
1/4W
470K
R73
1/4W
4K7
.
C67
250V
4N7
R28
1/4W
11K
C39
50V
22U
R75
1/4W
820R
R21
1/4W
47K
3682
W17
BLK
0V
3424
S7:A
4/8 Ohm
2+
2_
1+
1_
6956
J7_:A
SPEAKON 4C H
OUTPUT
I G
TO-220
O
78XX
TP5
C41
50V
22U
-78V
C44
400V
22N
TO92
BC550C
Q3
5101
R117
1/4W
2M2
C2
100V
10P
P1:A
4425
M
15A
500K
GAIN
C3
250V
10N
6882_PC
C49
100V
100N
V3:B
Val
Splitter
R87
1/4W
8K2
V3:A
Val
Splitter
D21
1N5262B
0W5
51V0
LD2
STANDBY
YEL
6399
R91
1/4W
22K
C65
16V
100U
R113
1/4W
100K
C4
63V
220N
S1:B
SCOOP
S1:A
SCOOP
C7
400V
1N
C5
250V
100N
R15
1/4W
220K
C46
400V
22N
R61
5.0W
1K8
1N750ARL
D18
0W5
4V7
Q18
5104
MPSA56
TO92
3682
W12
RED
B+
R71
1/4W
8K2
R70
1/4W
18K
R108
1/4W
10K
.
R69
1/4W
18K
R59
5.0W
1K8
R65
1.0W
FLMP
10R
C45
400V
22N
C19
100V
47P
C18
100V
47P
U1:A
TL072CP
U1:B
TL072CP
8
V+
4
V-
U1:C
R32
1/4W
100K
R37
1/8W
FLMP
249R
C54
63V
150N
C14
250V
10N
R18
1/4W
4K7
R24
1/4W
100K
C20
50V
22U
S2:A
TUNER MUTE
R114
1/4W
10K
P8:A
4425
M
15A
500K
RESONANCE
C50
100V
100N
W32
.
.
18AWG
Q10
5101
TO92
BC550C
Q9
5101
TO92
BC550C
R96
1.0W
470R
B C
E
TO-92
MPSA56
P2:A
4425
M
15A
500K
SCOOP
S8:A
.
R8
1/4W
82K
C42
50V
22U
Q17
5104
MPSA56
TO92
V6:A
Val
Function
Val
V7:A
Function
Val
V4:A
Function
Val
V5:A
Function
P7:A
4425
M
15A
500K
VOLUME
V2:B
Val
PREAMP OUT
R35
1/4W
10K
R34
1/4W
100K
R29
1/4W
11K
S
T
R
J8
-
-
-
OUTPUT
S
T
R
J7
-
-
-
OUTPUT
S7:B
S
T
R
Gold
.
.
J3
AMP IN
R39
1/4W
100K
R38
1/4W
100K
I
TO-220
O
G
79XX
P5:A
4424
M
1B
100K
TREBLE
P6:A
4424
M
1B
100K
RANGE
S
T
R
-
-
-
J2
PREAMP OUT
*Testpoints TP1 - 4 should measure between 350 - 550mV
6
4
5
1
2
3
PWR1
CH1333M
9
10
11
12
13
MODEL(S):-
DATE
VER# DESCRIPTION OF CHANGE
#
1
2
3
4
5
6
7
8
Updated net classes and class to class rules for hi-voltage.
Added extra breakaways
v3.01
.
4 May, 2004
.
PC#6673 R120 CHANGED 470R-->470K (#4821-->4843)
PC#6672 - Apply masking to mount pins of S7
PC#6672 - Corrected colour labels on LD1 & LD2
PC#6672 - Change D20 from 20V0 to 27V0 zener (6426)
CHNGD SKRN - TUBES NOW HAVE 'V' DESIGNATION
CHNGD SKRN - EYELET # SAME ON BOTH SIDE OF WIRES
fixed heatsink and made value changes
V2.00
V2.00
V2.00
V2.00
v1.00
1.00p1
22-MAR-2004
16-MAR-2004
10-MAR-2004
9 Jan, 2004
YBA200
M648 PCB HISTORY
2nd Proto
22 Sept, 2003
30-MAR-2004
19-APR-2004 V3.00 PC#6680 Add header to ribbon & tabs to ease wiring and allow
for double insulated wire on STDBY and HV from power board
to preamp. Modified STDBY switching.
REF
KNOB
PART#
MODEL(S):-
FUNCTION
8430
YBA200
M648
P32
N
N
N
N
K
K
K
K
P
P
P
P
F
F
F
F
R
R
R
R
P1
P2
P3
P4
P5
P6
P7
P8
RESONANCE
VOLUME
RANGE
TREBLE
BASS
MID
SCOOP
GAIN
4425
4425
4423
4425
4424
4424
4425
4425
8430
8430
8430
8430
8430
8430
8430
P32
P32
P32
P32
P32
P32
P32
TYPE
V1:B
Val
PreAmp
V2:A
Val
PREAMP OUT
RI
NG
J1
FUNCTION
RI
NG
J6
FUNCTION
RI
NG
J4
FUNCTION
"STYLE_P32"
7
4
1
9
2
3
5
6
8
13
10
11
12
D
.
.
25-MAY-2004
N
all large capacitors (C32-C33, C24-C27, C52-53,
33R 5W #4704 wirewound
PC#6687 Replace D5-8 IN5408->UF5408 (HER508)
23-JUN-2006
.
20-OCT-2004
.
10-JUN-2004
07-JUN-2004
.
.
PC#7108, MOVE SILPAD UNDER 7915 INSTEAD 7815
AH, PC#7118, REMOVE ROUTE CAUSE CUTTING R68
Updated z352 - new mounting hole sizes
C38, C72, C58, C61-C62 and AC Caps C22-C23)
ETCH GUIDE. PC#6693 - Added RTV holes to
PC#6692 - Moved VCD hole 1.5" to left and bottom left
PC#6688 - Replaced 100R 5W R56 with
Removed copper pours on sockets and force updated
V
.
.
V4.00
.
V5.10
.
.
.
V4.11
V4.10
.
27-OCT-2005 V5.00 AH, PC#6894, 6897 AND 6937
