Schematic Diagram - Yamaha YDS-12 Service Manual

A B
YDS-12

■ SCHEMATIC DIAGRAM

1
FOR INFORMATION ONLY (NO REPLACEMENT COMPONENT PARTS WILL BE AVAILABLE)
The voltage is measured with the dock-compatible component.
電圧はDOCK対応機器を接続して測定したものです。
POINT A XL1 (Pin 4 of IC5)
2
3
4
0
0
2.1
2.1
0
0
5
3.4
0
0
3.1
3.4
0
0
0
0
0
iPod_L
0
6 0
0
0
0
0
0
0
0
0
0
0 0
7
10
C D
AUTHENTICATION IC
MULTIPLEXER
1
0 3.4
3.3 0
3.4 B
3.4
3.4 3.4
2
3.4 3.4 IC5
3.4 3.4
3.4 3.4
0 3.4
A
3.4
3.3 0
3.4 3.4
3.4
3.4 0
3.4 0
3.4
3.4
3.4 0 3.4
IC9
3.3 0
0
0 0
3.4
3.4
0
3.4
0
0
3.4
0
3.4
0
E F
IC5
(VCC)
IC5
(RESET)
IC6
5.2
3.4
5.1 3.4
IC8 (Connect the power cable)
0
5.2
REGULATOR
IC3, 4: TC74VHC153FT
MICRO-
Dual 4-channel multiplexer
PROCESSOR
A
3.4
0 B
0
0
IC7
0
0
0
3.4 1C0
1C1
1C2
1C3
1G
2C0
2C1
2C2
2C3
2G
CB2
5.2
0
0
0
0
0
0
0
0
0
0
0
0
3.4
0
0
3.3
3.4
0
0
2.2
0
A B
MODE SWITCH
G H
POINT B 1 / IC5 (7 pin, VCC), 2 / IC5 (3 pin, RESET)
1 IC5 1
(VCC)
2 IC5 2
(RESET)
AC POWER ON AC POWER OFF
(Disconnect the power cable)
IC6: MFI341S2164
IC digital
14
S0
Vcc
H8/300H
I/O port
S0
Vss MICROPROCESSOR
S1
S1 RNG
System control
WDT
2
S2
FMU
Security logic Voltage monitoring circuit
S2
Internal address bus
S3
ROM (112 kbytes)
S3
6 RAM (4 kbytes)
7 1Y RES
S0
Power-on
EEPROM (16 kbytes + 2 kbytes)
5
reset circuit
S1
Interval timer 1
4
S2
Interval timer 2
3
On-chip
S3
Modular multiplication Register
oscillator
1 coprocessor (512 bytes)
10
9
2Y
S0
20 19 18 17 16
1 1
NC 1 15 NC
S1
P4/IRQ 2 14 P3/IRQ
12 Top view
NC 3 13 P1/IRQ
S2
RES 4 12 P2/IRQ
13
Vcc 5 11 Vss
S3
6 7 8 9 10
15
PIN CONNECTION DIAGRAMS OF TRANSISTOR, DIODE AND ICS.
MFI341S2164 R5F21284SNSP R1114Q331D-TR
R3112Q221A-TR-F
15 11
16 10
10
20 6 4
20
5 1
1
1SS400TE61 RB521S-30TE61 RSB6.8S 6.8V
Anode Anode
Cathode
Cathode Cathode
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
● 印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、
パーツリストに記載されている部品を使用してください。
● 本回路図は標準回路図です。改良のため予告なく変更することがあります。
I J
AC POWER OFF
(Disconnect the power cable)
IC7: R3112Q221A-TR-F
Nch open drain type
P4/IRQ V
DD
P3/IRQ OUT
R
D
P2/IRQ
P1/IRQ
Vref
GND
C
D
Internal data bus
IC8: R1114Q331D-TR
Low noise 150 mA LDO regulator
V
DD V OUT
Vref
Current Limit
CE GND
IC9: TC7SH08FU
2-input AND gate
IN B 1 5 V
CC
IN A 2
GND OUT Y
3 4
TC7SH08FU TC74VHC153FT
4
5 8
3
16
2
1 1
1
2SK3019TL DTC114EKA
Anode
3
D
1: GND
1
2: IN
G
3: OUT
2
S
and must be replaced