Read Sony SA-VA10 Service Manual online
— 6 —
I/O
Function
• IC501 System Control (µPD78042FGF-016-3B9)
Pin No.
3-1. IC PIN FUNCTION
Pin Name
SECTION 3
DIAGRAMS
O
—
O
O
O
O
O
O
O
O
I
O
O
—
O
—
—
O
—
I
I
I
—
—
I
—
—
I
O
O
O
I
1 to 7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37 to 40
41
7G to 1G
VDD
POWER RY
FUNC 1/2
PLO/DELAY-CLK
PLO/DELAY-CE
PLO/DELAY-DATA
FRONT MUT
CENTER EXT MUT
S/W MUT
RESET
REAR MUT
CENTER MUT
AVSS
CENTER EXT/INT
—
MODE
VOL SCL
—
SW1
KEY 1
KEY 0
AVDD
AVREF
STOP
XT2
VSS
X1
X2
S/W BOOST
S/W C1 to S/W C4
CENTER EXT-SW
FL grid control
Power supply terminal (+5V)
Power relay control
Input select control (L: input 2 H: input 1)
Prologic/Delay IC (IC103) serial control
Mute control (“L”=Mute)
System reset
Mute control (“L”=Mute)
Ground for A/D convertor
Center speaker switching control
Not used (Connected to ground)
Audio processor IC (IC203, 204) serial control
Not used (Connected to ground)
Audio signal detection (L: Sound input H: No sound input)
Key input (analog)
Analog power supply for A/D convertor
Reference voltage for A/D convertor (Connected to +5V)
Voltage detect (AC off)
Not used (Open)
Ground
Oscillation crystal (5 MHz) for main system clock
Sub woofer boost control (H: off L: on)
Super woofer level control
Connecting detection of external center output
(L: Connecting signal input H: No connecting signal input)
(L: Connecting signal input H: No connecting signal input)
• Abbreviation
FL : Fluorescent indicator tube
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