Yamaha NS-BP300 Service Manual page 65

A B C
FUNCTION 3/3
1
FUNCTION (1)
2
27.3
0
3
4.6
4.6
5.1
5.1
5.1
5.1
5.1
5.1
0.6
Page 68 G9 0
5.1
to MAIN (3)_CB801
5.0
4
0
5.1
5.0
5.0
0
5.0
0
0
CB101
5
2.5
2.5
2.5
6 2.5
14.2
Page 69 F7
0
to MAIN (5)_W51 4.6
4.6
0
0.7
5.0
0
CB109
7
5.1 5.0
5.1
5.1
5.1
-6.8
5.1
-6.8
8
9
POINT B XL101 (Pin 10 of IC101) POINT C XL102 (Pin 13 of IC101)
10
D E F
SYSTEM
CONNECTOR
0 0
0 0
TO:PLAYER
JK101
3.3
3.3
0 5.1
3.3
3.3
5.1
5.1
0
0
0
5.1
0
0
5.1
1.0
0 0
2.6
5.1
0
0 2.6
0 0
0
5.1
5.1
4.2
5.1
4.9
4.9
0
0
MICROPROCESSOR
0
5.0
0
IC101
0
2.5
2.5
2.5
2.5
0
0.5
B C
5.1
5.1
2.9
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
Ohm 0
V 0 – 0.2 0.3 – 0.8
A/D value (5V=1024) 0 – 40 60 – 165
I-KEY0 (91 pin) PRESET UP PRESET DOWN
Page 66 D2
to MAIN (1)_CB503
POINT D 1 / CB103 (+5BU), 2 / CB103 (N_RST)
CB103 1 CB103 1
(+5BU) (+5BU)
CB103 2 CB103 2
(N_RST) (N_RST)
POWER ON POWER OFF POWER ON
G H I
Page 69 B2 Page 67
to MAIN (4)_W1 to MAIN (2)_W401
(A, B models)
2 1
D
0
0
0
0
0
0
0
0
2.6
REG
5.0 5.1 5.8
5.1 No replacement part available.
4.4
5.1
5.0 3.3
3.9
5.1 5.8
3.9
0.7
0
0
0 5.0
0
5.0
5.0
0.2
0.3
0.3
CB105
5.1
(For factory)
0
0
0
0
0
0
0
0
0
0
0.6
0.6
0
0
5.1
0
3.3
0
Writing port
+1.2 k +91 k
4.0 – 5.0
820 – 1023
PURE DIRECT
J K
B4 Page 64 I7
to FUNCTION (2)_W702
0
3.3
0
0 0
3.3 0
0
5.0
3.3
0
3.3
0 0
IC101: R5F3640DNFA
0 0
Single-chip 16-bit CMOS microprocessor
8 8 8
Port P0 Port P1 Port P2 Port P3
VCC2 ports
Internal peripheral functions
UART or clock synchronous
Timer (16-bit)
Outputs (timer A): 5
Inputs (timer B): 6
(8 bits x 2 channels)
Three-phase motor control circuit
Watchdog timer
(15-bits)
M16C/60 series
A/D converter
Microprocessor core
(10-bits X 26-channels)
D/A converter R0H
R1H
(8-bits X 2-channels)
VCC1 ports
Port P10 Port P9 Port P8
8 8 8
IC103: MFI341S2164
IC digital
Vcc H8/300H
Vss
MICROPROCESSOR
0.2
5.0
System control
Security logic
0 0.6
Internal address bus
ROM (112 kbytes)
0
IC108 RES RAM (4 kbytes)
0 0.6
Power-on
EEPROM (16 kbytes + 2 kbytes)
reset circuit
0
Interval timer 1
0
Interval timer 2
On-chip
Modular multiplication
oscillator
coprocessor
IC102
0
0
0
0
0 0
5.1 0 IC105, 106: TC7SET08FU
2 input AND gate
IN B 1 5 VCC
EEPROM
IN A 2
GND 3 4 OUT Y
A B Y
L L L
L H L
H L L
H H H
L M N
R-840/NS-BP300
IC102: M24C02-RDW6TP
2 K-bit and 1 K-bit serial I2C bus EEPROM
V CC
8 8 8
3
Port P4 Port P5
E0-E2 SDA
E0 1 8 V CC
E1 2 7 WC
M24Cxx
SCL
E2 3 6 SCL
Clock generation circuit V SS 4 5 SDA
WC
serial I/O X IN -X OUT
(6-channels)
X CIN -X COUT
PLL frequency synthesizer
Clock synchronous On-chip oscillator (125 kHz)
serial I/O
V SS
DMAC
(4 channels)
CRC arithmetic circuit (CCITT)
(Polynomial : X 16 +X 12 +X 5 +1)
Memory
ROM
SB
R0L
R1L USP RAM
R2
ISP
R3
INTB
A0 PC
A1
A1
FB FLG Multiplier
FB
Port P7 Port P6
8 8
IC104, 107: TC7SZ125FU
Bus buffer 3-state output
P4/IRQ
P3/IRQ G 1 5 Vcc
I/O port P2/IRQ
P1/IRQ
RNG IN A 2
WDT
FMU
Voltage monitoring circuit
4 OUT Y
GND 3
Internal data bus
20 19 18 17 16
NC 1 15 NC
P4/IRQ 2 14 P3/IRQ
Register
Top view
NC 3 13 P1/IRQ
(512 bytes)
RES 4 12 P2/IRQ
Vcc 5 11 Vss
6 7 8 9 10
IC108: TC7WH125FK IC109: R1154H058B-T1-F
Dual bus buffer Voltage regulator
G1 1 8 Vcc Thermal
Protection
A1 2 7 G2 1 V
V DD 3 OUT
Y2 3 6 Y1
GND 4 5 A2
4 NC
Vref
Short Current
Protection Limit
Circuit Circuit
CE 5 2 GND
Pin No. Symbol Description
1 V OUT Output Pin for Voltage Regulator
2 GND Ground
3 CE Chip Enable Pin (active at "H")
4 NC† No Connection
5 V DD Power Supply Pin
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
★ Components having special characteristics are marked
and must be replaced
with parts having specifications equal to those originally installed.
★ Schematic diagram is subject to change without notice.
65