Yamaha NP-S2000 Service Manual page 66

A B C
NP-S2000
DAC 2/4
1
DAC (2)
2
8.4
IC201
8.4
3
5.0 5.0
0
5.8
5.8 5.8
5.0 0 5.0 0
4
5
6
CB202
4.6
4.6
8.3
Page 69 E7
5.0
to POWER (3)_CB605
5.0
5.0
0
7
8
9
IC201: R1154H058B-T1-F
Voltage regulator
Thermal
IC202, 203: RP130Q501D-TR-F
Protection
Voltage regulator
V 3 1 V OUT
DD
V DD 4
4 NC
Vref
Short Current
Limit
Protection
Circuit Circuit
10
2 GND
CE 5 CE 1
Pin No. Symbol Description
Pin No.
1 V OUT Output Pin for Voltage Regulator
1
2 GND Ground
2
3 CE Chip Enable Pin (active at "H")
3
4 NC† No Connection
4
5 V Power Supply Pin
DD
66
D E F
Page 67 B6
to DAC (3)_CB701
0
0
0
2.1
2.6
2.2
2.1
2.6
1.1
MICROPROCESSOR
0
5.0
5.0
5.0
5.0
0
0
0
IC209
5.0
0
0
5.0
5.0
0
0
0
5.0 2.7
5.0 0
5.0
0.3 5.0
5.0 0
0 5.0
0
5.0
3.2
0
0
0
0 3.2
0
3 V OUT
IC204, 205: TC7SZ125FU IC206, 207, 211: TC7SZ126FU
Bus buffer 3-state output
Bus buffer 3-state output
G 1
G 1 5 Vcc
Vref
IN A
Current Limit 2
2 GND
IN A 2
GND
3
Symbol Description
GND 3 4 OUT Y
CE Chip Enable ("H" Active)
GND Ground Pin
V Output Pin
OUT
V DD Input Pin
G H I
(Writing port)
0 0
0 5.0
5.0 0 0
0.3 0
0
0
5.0 5.0
SUB-
5.0 0 IC205
0 0 0
IC204
0
IC208
0
5.0
0
5.0
5.0
4.9
4.9
1.4
2 1
E
0
D
0
POINT D XL201 (Pin 9 of IC208)
IC215
IC214 IC214
IC213: TC7SET08FU
IC210, 212: TC74VHCT08AFT
2 input AND gate
Quad 2-input AND gate
1A 1 14 Vcc
5 V CC IN B 1 5 V CC
2 13
1B 4B
IN A 2
1Y 3 12 4A
OUT Y 2A 4 11 4Y
4
GND 3 4 OUT Y
2B 5 10 3B
2Y 6 9 3A
GND 7 8 3Y
J K
Writing port
0 0
5.0
0
5.0
CB208
0
0
0
0
0
0
Page 64 C2
5.0
to NET (2)_CB581
0
5.0
0
1.4
1.1
0 0
5.0
0
1.4
0
0 POINT E 1 / IC208 (12 pin, +5M), 2 / IC208 (8 pin, CPU_N_RST)
IC207
1.1 0
IC206
0
0
IC208 1
0
0
(12 pin, +5M)
IC208 2
0 (8 pin, CPU_N_RST)
AC POWER ON
(Connect the power cable)
0
3.2
3.2
5.0
2.7
0
0
0.3
5.0
5.0
0
5.0
A B Y
L L L
L H L
H L L
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
H H H
★ Components having special characteristics are marked
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
L M N
IC208: R5F21356ANFP
Single chip 16 bit microprocessor
8 8 8 8 5 1 2 8
I/O ports Port P0 Port P1 Port P2 Port P3 Port P4 Port P5 Port P6
Peripheral functions
UART or System clock
Timers
clock synchronous serial I/O generation circuit
(8 bits x 3)
XIN-XOUT
Timer RA (8 bits x 1)
High-speed on-chip oscillator
Timer RB (8 bits x 1)
Low-speed on-chip oscillator
2
I C bus or SSU
Timer RC (16 bits x 1) XCIN-XCOUT
(8 bits x 1)
Timer RD (16 bits x 2)
Timer RE (8 bits x 1)
Low-speed on-chip oscillator
LIN module
for watchdog timer
Watchdog timer
Comparator B Voltage detection circuit
(14 bits)
Comparator A
A/D converter
(10 bits x 12 channels)
DTC
D/A converter
(8 bits x 2)
R8C microprocessor core Memory
(1)
R0H R0L SB ROM
R1H R1L
USP
R2
ISP
R3
RAM (2)
INTB
A0
PC
A1
FB FLG
Multiplier
NOTES:
1. ROM size varies with MCU type.
2. RAM size varies with MCU type.
IC208 1
(12 pin, +5M)
IC208 2
(8 pin, CPU_N_RST)
AC POWER OFF AC POWER ON
(Disconnect the power cable) (Connect the power cable)
Page 68 I8
to DAC (1)_CB406
CB212
2.6
2.1
2.2
0
Page 68 L8
to DAC (1)_CB407
4.9
4.9
5.0
0
CB213
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
and must be replaced ● 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。