Read Sony ST-SE570 Service Manual online
ST-SE570
14
14
3
6
11
2
5
8
1
4
14
15
12
9
10
16
13
7
FM IF AMP
LIMITER
AF/NULL
METER
QUADRATURE
DET
AF AMP
IF OFF
NULL METER
SHORTING
LEVEL
DET
METER
DRIVE
MUTING
CIRCUIT
CIRCUIT
DETUNE
DET
GND
B+
1
2
3
4
REG
GND
CONTROL
REG
5
6
7
IC901 LA5667
ANALOG
DIGIT
AL
RCLK
NC
XO
XI
VSS2
T2
VDD2
T1
QUAL
RDA
T
VREF
MUX
VDD1
VSS1
VSS3
CMP
1
4
3
6
5
8
7
2
14
15
16
13
12 11 10
9
CLOCK
PLL 57kHz
RDS/ARI
COMPARATOR
8th SWITCHED
CAPACITOR
FILTER
ANTI-ALIASING
FILTER
BIPHASE
DECODER
PLL
1187.5Hz
DEFFERENTIAL
DECODER
TEST
IC801 BU1924
• IC Block Diagrams
– MAIN Board –
– MAIN Board –
IC201 LA1235
5-6.
IC PIN FUNCTION DESCRIPTION
•
DISPLAY BOARD IC701 (
µ
PD780205GF-040-3BA)
Pin No.
Pin Name
I/O
Description
1
VDD
—
Power supply terminal (+5V)
2
ANT
—
Not used (open)
3
ANT
—
Not used (open)
4
BAND1
—
Not used (open)
5
BAND2
—
Not used (open)
6
IF-B
—
Not used (open)
7
N.C.
—
Not used (open)
8
MONO
—
Not used (open)
9
TUN
—
Not used (open)
10
RESET
I
System reset signal input terminal “L”: reset
11
X2
O
Main system clock output terminal (4.19MHz)
12
4.19MHz
I
Main system clock input terminal (4.19MHz)
13
GND
—
Ground terminal
14
N.C.
—
Not used (open)
15
LOCK
I
Lock signal input terminal
16
VDD
—
Power supply terminal (+5V)
17
CLK
O
Serial data transfer clock signal output to the PLL IC on tuner pack (TB101) “L”: active
18
DATA
O
Serial data output to the PLL IC on tuner pack (TB101)
19
D-IN
I
Serial data input from the PLL IC on tuner pack (TB101)
20
CE
O
Serial chip enable signal output to the PLL IC on tuner pack (TB101)
21
BLN
—
Not used (open)
22
ST
I
Stereo detection signal input from the tuner pack (TB101)
23
CAL
—
Not used (open)
24
AST
I
Tuned display detection signal input from the tuner pack (TB101) “L”: tuned
25
AVSS
—
Ground terminal
26
MUTE
O
Muting on/off control signal output terminal
27
EON
O
EON output control terminal
28
PGM
—
Not used (open)
29
DATA RDS
I
RDS data input from the RDS decoder (IC801)
30
R2
O
Rotary encoder phase detection
31
KEY2
I
Key input terminal (A/D input)
32
KEY1
I
Key input terminal (A/D input)
33
SI
I
Signal input terminal
34
AVDD
—
Analog power supply terminal (+5V)
35
AVREF
I
Reference voltage (+5V) input terminal
36
RIN
I
Remote control signal input from the remote sensor (IC702)
37
R1
I
Rotary encoder number of rotation detection
38
RDS CLK
I
RDS serial clock signal input from the RDS decoder (IC801)
39
POWER
I
Power supply ON/OFF monitor
40
GND
—
Ground terminal
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