Yamaha b1-Silent, Service Manual

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A B C D E F G H I J K L M N O P Q
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A B C D E F G H I J K L M N O P Q
SILENT SD SERIES SILENT SD SERIES
SILENT SD SERIES
<Page 3>
SILENT SD SERIES OVERALL CIRCUIT DIAGRAM 1/2 (DM)
WG87600
DRAM 4M
FLASH ROM 64M
PROGRAM/WAVE 2
FLASH ROM 4M
FLASH ROM 64M
PROGRAM/WAVE 1
Detection Voltage
SYSTEM
RESET
AND
Internal CLK 33.8688M
CPU
(SWL01B)
REGULATOR
+3.3V/+2.5V
Internal CLK 33.8688M
CPU
(SWL01B)
REG5V
DAC
OP AMP
OR
AND GATE
CPU
(E-HOSTs)
TRANSCEIVER
BUFFER
to AM-CN205
<Page 4 F-5>
to DC-IN -CN102
<Page 4 J-2>
to DC-IN -CN103
<Page 4 K-2>
to AM-CN206
<Page 4 B-2>
DM
not installed
not installed
not installed
not installed
not
installed
1: INPUT
2: NC
3: GND
4: OUTPUT1
5: OUTPUT2
6: GND(Fin)
1
2
3 4
5
6
µ
PC37M32TJ-E1-AZ(X5914A00)
REG3.3V/+2.5V
IC005
NJM78M05DL1A(XS534A00)
REG5V
IC010
1SS372 (V9424900)
DIODE ARRAY
DA003, 004
EC10DS4-TE12L (VN681100)
DIODE
D0001–0003
D1F60 (VS201100)
DIODE
D0001–0003
DTC123JKA (VY677600)
DIGITAL TRANSISTOR
TR005, 006
DTB123YK (VY677700)
DIGITAL TRANSISTOR
TR001–004, 007–010
UMG5N (WC668500)
DIGITAL TRANSISTOR
TA001–004
1: INPUT
2: GND
3: OUTPUT
1
2
3
1: ANODE1
2: CATHODE2
3: CATHODE1,
1
3
2
ANODE2
1 2
3
1
2
1: ANODE
2: CATHODE
1: ANODE
2: CATHODE
2
1
1: GND
2: IN
3: OUT
1
3
2
OUT
R1
R2
GND
IN
IN
GND
OUT
1: GND (+)
2: IN
3: OUT
1
3
2
OUT
R1
R2
GND (+)
IN
IN
GND (+)
OUT
1: DTr1 IN
2: GND
3: DTr2 IN
4: DTr2 OUT
5: DTr1 OUT
1
3
4
5
2
R1
DTr1 DTr2
R2
R1
R2
3
4
5
2 1
R1: 10k
Ω
R2: 47k
Ω
: Ceramic Capacitor （セラミックコンデンサー）
: Not installed
（未実装）
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。
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