Yamaha KB-180, Руководство по обслуживанию

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KB-180/SKB-180
16
IC BLOCK DIAGRAM
AK43 8 5ET
(X6040A00)
DAC
(Digital to Analog Converter)
DMLCD: IC501
PIN
NO.
NAME I/O FUNCTION
1
2
3
4
5
6
7
8 MCLK
BICK
SDTI
LRCK
PDN
CSN
CCLK
CDTI
I
I
I
I
I
I
I
I Master Clock
Audio Serial Data Clock
Audio Serial Date Input
L/R Clock
Power Down mode
Chip Select
Control Data Input
Control Data Input
PIN
NO.
NAME I/O FUNCTION
9
10
11
12
13
14
15
16
AOUTR-
AOUTR+
AOUTL-
AOUTL+
Vss
VDD
DZFR
DZFL
O
O
O
O
-
-
O
O
Rch Analog out(-)
Rch Analog out(+)
Lch Analog out(-)
Lch Analog out(+)
Ground
Power Supply
Rch Data Zero Input Detect
Lch Data Zero Input Detect
SN74LV32APWR
(X5647A00)
Quad 2 Input OR
DMLCD: IC207
SN74LV13 8 APWR
(X7284A00)
3 to 8 Demultiplexer
DMLCD: IC401, 402
BA4510F-E2
(X7300A00)
Dual Operational Amplifier
DMLCD: IC502
1
2
3
1A
1Y
4
2A
5
2B
6
2Y
7
GND
1B
14
13
12
Vcc
4A
11
4Y
10
3B
9
3A
8
3Y
4B
1
2
3
4
5
6
7
A
A
Select
Enable
Output
Output
B
B
C
C
G2A
G2A
G2B
G2B
G1
G1
Y7
Y7 Y5
Y4
Y3
Y2
Y1
Y0
Y6
16
15
14
13
12
11
10
Vcc
YO
Y1
Y2
Y3
Y4
Y5
8
GND 9 Y6
1
2
3
4 -V
8
7
6
5
Output 1
+V
+Input 1
VEE
VCC
Output 2
-Input 2
+Input 2
-Input 1
+ -
+ -
-OUT2
+OUT2
RIPPLE
FILTER
BIAS
CIRCUIT
STANDBY
SW
POP NOISE
PREVENTION
CIRCUIT
PREDRIVER
PREDRIVER
POWER
POWER
LOAD SHORT
PROTECTOR
OUTPUT PIN TO V
CC
SHORT PROTECTOR
OUTPUT PIN TO V
CC
SHORT PROTECTOR
OUTPUT PIN TO GND
SHORT PROTECTOR
OUTPUT PIN TO GND
SHORT PROTECTOR
PREDRIVER
PREDRIVER
POWER
POWER
OVER VOLTAGE/
SURGE
THERMAL
SHUT DOWN
LOAD SHORT
PROTECTOR
V
CC
-OUT1
+OUT1
POWER
GND2
+
-
IN
+
-
IN
IN2
POWER
GND1
14 2
1
3
4
6
7 5
8
10
9
11
12
13
IN1
PRE-GND
STBY
ON TIME POP
PWR-GND2
PWR-GND1
V
CC
DC
LA4625
( XY209A00)
Power Amplifier
AM: IC551