Read Sony ST-SE370 Service Manual online
ST-SE370
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 µPD78045FGF-130-3B9 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Description
1 to 7
G7 to G1
O
Grid drive signal output to the fluorescent indicator tube (FL701)
8
VDD
—
Power supply terminal (+5V)
9
PLL CLK
O
Serial data transfer clock signal output to the PLL IC on tuner pack (TB101)
10
PLL DATA OUT
O
Serial data output to the PLL IC on tuner pack (TB101)
11
PLL DATA IN
I
Serial data input from the PLL IC on tuner pack (TB101)
12
PLL CE
O
Serial chip enable signal output to the PLL IC on tuner pack (TB101)
13
AST
I
Tuned display detection signal input from the tuner pack “L”: tuned
14
ST
I
Stereo detection signal input from the tuner pack “L”: stereo
15, 16
NC
—
Not used (fixed at “L”)
17
RESET
I
System reset signal input terminal “L”: reset
18
DC. CUT
—
Not used (open)
19
NC
—
Not used (fixed at “L”)
20
AVSS (GND)
—
Ground terminal
21
MUTE
O
Muting on/off control signal output terminal
22 to 24
NC
—
Not used (fixed at “L”)
25
EON
—
EON output control terminal Not used (open)
26
KEY1
I
Key input terminal (A/D input)
27
KEY2
I
Key input terminal (A/D input)
28
SI
I
Signal input terminal
29
AVDD
—
Analog power supply terminal (+5V)
30
AVREF
—
Reference voltage input terminal (+5V)
31
GND
—
Ground terminal
32
NC
—
Not used (open)
33
GND
—
Ground terminal
34
X1
I
Main system clock input terminal (4.19MHz)
35
X2
O
Main system clock output terminal (4.19MHz)
36 to 42
NC
—
Not used (fixed at “L”)
43
RDS DATA
I
RDS data input from the RDS decorder (IC801) (Used for the AEP and UK models only)
44
RDS CLK
I
RDS serial clock signal input from the RDS decoder (IC801) (Used for the AEP and UK models
only)
only)
45
R1
I
Rotary encoder number of rotation detection
46
RIN
I
Remote control signal input from the remote sensor (IC702)
47
POWER
I
Power supply ON/OFF monitor
48
IC
I
Signal chip mode detection Not used (fixed at “L”)
49
NC
—
Not used (fixed at “L”)
50
R2
O
Rotary encoder phase detection
51
NC
—
Not used (fixed at “L”)
52
VDD
—
Power supply terminal (+5V)
53 to 56
IS1 to IS4
I
Setting terminal for the model
57
GND
—
Ground terminal
58 to 70
P18 to P6
O
Segment drive signal output to the fluorescent indicator tube (FL701)
71
VFL
—
Negative power supply terminal for the fluorescent indicator tube drive (–30V)
72 to 76
P5 to P1
O
Segment drive signal output to the fluorescent indicator tube (FL701)
77 to 80
G11 to G8
O
Grid drive signal output to the fluorescent indicator tube (FL701)
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