Ghd Ebus L (Xz138D0); Ghd M (X2217A0); Hp (Xq390A0); Maeq (X6391C0) - Yamaha YDO-323 Service Manual

A B C
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YDP-323 OVERALL CIRCUIT DIAGRAM 2/2 (GHD EBUS L, GHD H, GHD M, HP, MAEQ, MK SUB, MVR, PL, PS)
1
MAEQ
2
OP AMP
to DM-CN7
3
CN7: not installed
4
5
6
OP AMP
7
OP AMP
8
REGULATOR
+12V
9
10
WARNING POWER
Components having special characteristics are
PS
marked Z and must be replaced with parts having Z
Z
specification equal to those originally installed. Z
Note : See parts list for details of circuit board
Z
component parts.
Z
A C - N I 1
A C - N I L E T
Z
11
1 MODEL SPECIFICATION
DESTINATION U
AC-IN POLARIZED
V-SEL Not installed
C1, C2 0.0047 / 250V
C3 0.01 / 250V
J1 Not installed
J2 Installed
F1 2A
F2 Not installed
F3 5A
12
YDP-323
A B C
D E F G
MVR
R78/R81/C77/C78: not installed
POWER AMP
MASTER
VOLUME
28CC1-8834937 1
OP AMP
POWER AMP
CN8: not installed 20W + 20W
OP AMP
OP AMP
REGULATOR
+5V
OP AMP
28CC1-8835032 1
not installed
POWER
TRANSFORMER
Z Z
Z
28CC1-8812254
TRANS SPECIFICATION
U
D E F G
H I J
to DM-CN10
HP
J
C6 20uH
C7
20uH
10uH
PHONES
20uH
20uH
10uH
28CC1-8811547
Keybed
SPEAKERS
PL
WHITE
L
BLACK
Power indicator
RED
R
BROWN
28CC1-8812287
to DM-CN1
: Not installed
: Ceramic Capacitor
: Mylar Capacitor
GHD M (G2 ~ C5)
G2 ~ C3 C#3 ~ F#3 G3 ~ C4 C#4 ~ F#4
H I J
K L M N
F # 2)
GHD EBUS L (A-1 ~
A-1 ~ C0 C#0 ~ F#0 G0 ~ C1 C#1 ~ F#1
MK SUB
LKS
Not installed
Not installed
(C # 5
GHD H ~
G4 ~ C5 C#5 ~ F#5 G5 ~ C6
28CC1-8822377
K L M N
O P Q
YDP-323
1
µPC24M12AHF-AZ (XU387A00)
REGULATOR +12V
MAEQ: IC1
1: INPUT
1 2: GND
2
3: OUTPUT
3
µPC2405AHF (XR607A00)
REGULATOR +5V
2
MAEQ: IC2
1: INPUT
1 2: COMMON
2
3: OUTPUT
3
1T4-T/A52 TP (V7803100)
1T4-T/A26 TP (V9362200)
DIODE
PS: D1, 2
3
1
2
1: ANODE
2: CATHODE
1SS355 TE-17 (VT332900)
DIODE
MAEQ: D1, 2, 4–6
1
4
2
1: ANODE
2: CATHODE
D3SBA20 (VN011300)
DIODE STACK 4.0A 200V
PS: DB1
5
2SC2412K(VV556400)
G1 ~ C2 C#2 ~ F#2 TRANSISTOR
MAEQ: TR1–3
3
28CC1-8819027 2
2 1
3
2
1: EMITTER
2: BASE
1 3: COLLECTOR
1SS133, 1SS176 (VB941200)
DIODE
6
GHD EBUS L: D1–69
GHD H: D61–108
GHD M: D1–60
1
2
1: ANODE
2: CATHODE
7
8
9
28CC1-8819224
C7)
10
11
C#6 ~ F#6 G6 ~ C7
28CC1-8822378
12
YDP-323
O P Q