Yamaha SILENT Piano SD Series Panduan Servis - Halaman 49
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Halaman Cetak
1
2
<Page 4>
SILENT SD SERIES OVERALL CIRCUIT DIAGRAM 2/2 (AM, DC-IN, KEY SENSOR)
A
AM
B
AJK
(AUDIO)
to DM-CN7
<Page 3 K-10>
C
D
12V
E
SW
Power switch
POWER
(ON/OFF)
F
PS+REV
G
not installed
H
DC-IN
12V
I
DJK
(MIDI)
to DM-CN2
<Page 3 B-9>
J
PJK
(PDL)
to DM-CN3
K
<Page 3 B-10>
PS+REV
L
KEY SENSOR
M
N
O
P
Q
SILENT SD SERIES
1
2
3
4
5
Z:
MUTE (DEFAULT)
GND: ON
H: ON
L: MUTE
TEST MODE
REGULATOR +10V
DC-DC CONVERTER
MA (+5D)
to DM-CN1
<Page 3 B-8>
REVERB
TEST MODE
Photo Coupler
WH12610
OP AMP
Transistor
Array
OP AMP
3
4
5
6
7
OPERATIONAL
POWER AMP
VOLUME
DC IN 12V
KEY
DAMPER pedal
（ダンパーペダル）
MAX
MIN
WH
1
RE
2
GR
3
PDL
YE
1
BE
2
SOFT pedal
（ソフトペダル）
N.C
CPU (FLASH)
CPU1
Transistor
Array
INVERTER
SYSTEM RESET
Photo Coupler
INVERTER
6
7
8
9
10
B
PHONES
A
MIDI INPUT/
OUTPUT
WARNING
Components having special characteristics are
marked
and must be replaced with parts having
specification equal to those originally installed.
安全上の注意
印の部品は、安全を維持するために重要な部品です。
交換する場合は、安全のため必ず指定の部品をご使用ください。
Note : See parts list for details of circuit board
component parts.
注 : シート部品詳細は、パーツリストをご参照ください。
or
: Not installed（未実装）
: Ceramic Capacitor（セラミックコンデンサー）
: Metal Oxide Film Resistor（酸化金属被膜抵抗）
: MetalFilmResistor（金属被膜抵抗）
not installed
not installed
OP AMP
KSN05A-V858590
8
9
10
11
12
SILENT SD SERIES
A
B
C
D
E
F
G
WH12600
H
µPC2910T-E1-AZ (X7408A00)
LM2596SX-5.0 (X3564A00)
REGULATOR +10V
DC-DC CONVERTER
AM: IC201
AM: IC203
Metal
Tab
GND
4
I
1
2
1
2
3
4
3
1: INPUT
5
1: V
IN
2: GND
2: OUTPUT
3: GROUND
3: OUTPUT
4: FEEDBACK
4: GND (Fin)
5: ON/OFF
EC10DS4-TE12L (VN681100)
RB050L-40 (VU445900)
DIODE
DIODE
AM: D205
AM: D202
1
1
2
2
J
1: ANODE
1: ANODE
2: CATHODE
2: CATHODE
RLS-73 TE-11 (VV925900)
2SC2412K(VV556400)
DIODE
TRANSISTOR
DC-IN: D101–107
AM: TR201
KEY SENSOR: D0080
DC-IN: TR101, 102
KEY SENSOR: Q0080
3
1
2
2
1
3
2
1: EMITTER
1: ANODE
2: BASE
2: CATHODE
3: COLLECTOR
1
2SJ278MYTR-E (VZ427900)
K
FET
KEY SENSOR: FT001, 002
4
1
2
3
1: GATE
2: DRAIN
3: SOURCE
4: DRAIN
L
M
N
O
P
Q
SILENT SD SERIES
11
12