Yamaha CD-1330 Service Manual page 40

A B C
CD-1330
DIGITAL 2/3
1
DC/DC CONVERTER
DIGITAL (1)
4.9
20.0
IC300
2
4.9
0
3 DC/DC CONVERTER
7.9
20.0
IC302
7.9
4
0
CB300
5
Page 43 L5
to OPERATION (4)_W201
6
7
8
POINT D 1 / Pin2, 2 / Pin1 of IC307
POINT C XL300 (Pin 13 of IC304)
2 pin 1
9
1 pin 2
Power ON Power OFF
10
★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.
● 電圧は、内部抵抗 10MΩの電圧計で測定したものです。
★ Components having special characteristics are marked
and must be replaced ●
with parts having specifications equal to those originally installed. 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。
★ Schematic diagram is subject to change without notice.
● 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ございます。
40
D E F
Page 41
LEGULATOR
to DIGITAL (2)_CB901
4.9 4.2 4.2 3.3
4.2 IC303
3.3
0
0
4.2
IC802
IC803
7.9 7.4
7.4 0
0
7.4
0 0
0
IC311
LEGULATOR
IC802
IC802
CB301
AUDIO OUT
Page 42 G6
to OPERATION (3)_W1
IC802
2 pin 1
IC300, 302: BD9870FPS-E2
High stand voltage 1 channel step-down switching regulator
1 pin 2
VREF
Power OFF
OSC
STBY
5
STBY
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、
G H
J3
CB801
MICROPROCESSOR
IC304
2.9
0
3.4
3.4
0
0
0
3.4
C
3.4
0
3.3
3.3
3.3
3.3
3.1
IC305
3.3
3.3
3.3
3.3
IC303: R1172S331B-E2-F
CMOS-based positive-voltage regulator IC
VCC
1
V DD 6 1 V OUT
PWM COMP DRIVER
Vref
Current Limit
CE GND
3 2,5
CTL
LOGIC OUT
2
TSD OCP
Pin No. Symbol Description
1 V OUT Output Pin of Voltage Regulator
2, 5 GND Ground Pin
INV
Error AMP
3 CE Chip Enable Pin
4
4 NC No Connection
6 V Input Pin
DD
SS
FIN
GND
I J K
4.9
SHIFTER
IC308
3.3
4.9
IC308
3.3
4.9
IC308
0
0
IC308
3.3
4.9
0
0
3.3
3.3
3.3
0
1.6
3.3
3.3
0
3.3
3.3
3.3
0
0
3.3
0
3.3
IC307
RESET IC
IC306
2 D 1
IC310
IC310
IC309
IC310
IC304: M30302FAPFP
Single-chip 16-bit microprocessor
8 8 8 8 8 8 8
Port P0 Port P1 Port P2 Port P3 Port P4 Port P5 Port P6
Peripheral function
System clock generator
A/D converter
Timer (16-bit) X IN -X OUT
(10-bit 18-channel )
X
X CIN -X COUT
Input (timer A) x3
UART or clock synchronous type
Output (timer B) x3 serial I/O
(3-channel)
CRC arithmetic circuit (CCITT)
16 12 5
(Polynomial : X +X +X +1)
M16C/60 series
Watchdog timer Memory
Microprocessor core
(15-bit)
ROM
(Note 1)
SB
DMAC
R0H R0L
RAM
(2-channel) R1H R1L USP
R2 (Note 2)
ISP
R3
INTB
A0 PC
A1
A1
FB FLG
Multiplier
FB
Note 1: ROM contents vary depending on types.
RAM contents vary depending on types.
Note 2:
L M N
LEVEL
CB303
Page 43 F8
to OPERATION (9)_CB151
IC803: R1154N033B-TR-F
CB304
Voltage regulator
Thermal
Shutdown
V 3 1 V OUT
DD
4 NC
Writing port
Vref
Short Current
Protection Limit
Circuit
Circuit
CE 5 2 GND
Pin No. Symbol Description
Output Pin for Voltage Regulator
1 V OUT
2 GND Ground
3 V DD Power Supply Pin
4 NC B Version No Connection
5 CE Chip Enable Pin (active at "H")
IC311: RP131S501D-E2-F
Voltage regulator
V V
DD 6 1 OUT
Vref
Current Limit
CE GND
4 2,5
Pin No. Symbol Description
1 V Output Pin of Voltage Regulator
OUT
2 GND Ground Pin
3 NC No Connection
4 CE Chip Enable Pin ("H" Active)
5 GND Ground Pin
6 V Input Pin
DD
IC307: BD5229G-TR IC308, 802: TC74VHCT08AFT
Voltage detector IC with adjustable output delay Quad 2-input AND gate
V DD
1A 1 14 Vcc
2
1B 2 13 4B
1Y 3 12 4A
1 Vout
2A 4 11 4Y
2B 5 10 3B
–
2Y 9 3A
+ 6
GND 7 8 3Y
Vref
NC
4
3 5
GND CT