Sony ST-SE520 (serv.man2) Service Manual ▷ View online
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– 12 –
ST-SE520
4-3. SCHEMATIC DIAGRAM – DISPLAY SECTION –
• See page 6 for Waveform.
• See page 15 for IC Pin function.
• See page 15 for IC Pin function.
(Page 8)
(Page 8)
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ST-SE520
4-4. PRINTED WIRING BOARD – DISPLAY SECTION –
(Page 9)
(Page 10)
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4-5. IC PIN FUNCTION
• IC701 System Control (
µ
PD78044AGF-041-3B9)
I/O
Function
Pin No.
Pin Name
1 to 7
8
9 to 12
13
14
15
16
17
18
19
20 to 24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49 to 51
52
53 to 56
O
—
—
O
O
O
I
I
—
O
—
O
I
I
I
—
I
—
—
—
I
O
I
I
I
I
—
—
O
I
I
I
I
—
—
—
—
FL grid output
Power supply (+5V)
Ground
PLL Latch to TB101
PLL clock to TB101
PLL data to TB101
PLL data from TB101
System reset input
Ground
Rotary encoder phase detection
Ground
External control (Connected to ground)
Key input
Key input
Signal input
Analog power supply (+5V)
Reference voltage (+5V)
Ground
No used
Ground
Oscillation signal output (4.19MHz)
Oscillation signal output (4.19MHz)
RDS data input (Connected to ground)
Stereo display detection
Auto stop signal detection
RDS reset input (Connected to ground)
No used (Connected to ground)
Connected to ground
Connected to ground
Muting signal output
Remote control input
Rotary encoder number of rotation detection
RDS data clock input (Connected to ground)
Power supply ON/OFF monitor
Ground
Ground
Power supply (+5V)
Ground
7G to 1G
VDD
GND
PLL CE
PLL CLK
PLL DATA OUT
PLL DATA IN
RESET
GND
R2
GND
E ON
KEY 0
KEY 1
SI
AVDD
AVREF
GND
NC
GND
X1
X2
RDS DATA
ST
AST
RDS RESET
START
ERROR
CORRECT
MUTE
R IN
R 1
RDS CLK
POWER
IC
GND
VDD
GND
– 16 –
I/O
Function
Pin No.
Pin Name
57
58
59
60
61
62 to 70
71
72 to 77
78 to 80
IS 4
IS 3
IS 2
IS 1
GND
P15 to P7
VFL
P6 to P1
10G to 8G
I
I
I
I
—
O
—
O
O
Model detection
Ground
FL segment output
Power supply (–30V)
FL segment output
FL grid output
• Abbreviation
FL: FLUORESCENT INDICATOR TUBE
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