Sony SLV-GA30, Service Manual

Page: 40 / 120

5-3
5-6. SERVO/SYSTEM CONTROL MICROPROCESSOR PIN FUNCTIONS
(MA-336 BOARD IC201)
Pin No.
1
2
3
4
5
6
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
38
39
40
41
42
43
44
45
46
47
48
49
50
Pin Name
REC PRF
AVSS
KEY1
KEY2
KEY3
KEY4
DEST2
V SWP ADJ
A SWP ADJ
DEST
S SENS
T SENS
VIDEO RF
AUDIO RF
AVCC
RESET
REC P
NTSC
KILL IN
SHARPCONT1
AU MUTE
VCC
AF SWP
RF SWP
CAP VS
DRUM VS
QVD
NC
SHARPCONT2
NC
CTL (+)
CTL (–)
VSS (SERVO)
CTLI-1
CTLI-2
CTLI-3
CTLAMP
DRUM FG
DRUM PG
CAP FG
VCC (SERVO)
VCC (OSD)
CVIN
VREF
CVOUT
CHAR. BIAS
AFC LPF
AFC OSC
VSS(OSD)
DOSC IN
I/O
I
I (A/D)
I (A/D)
I (A/D)
I (A/D)
I (A/D)
I (A/D)
I (A/D)
I (A/D)
I (A/D)
I (A/D)
I (A/D)
I (A/D)
I
O
O
I
O
O
O
O
O
O
O
O
I/O
I/O
I
I
I
I
O
I
Function
Erasing protection tab. cassette in detection.
Analog circuit ground
Analog voltage (KEY) input 1.
Analog voltage (KEY) input 2.
Analog voltage (KEY) input 3.
Analog voltage (KEY) input 4.
Destination discrimination input 2
Video switching position adjustment
Audio switching position adjustment
Destination discrimination input 1
Supply side end sensor input
Take-up side end sensor input
Video RF envelope input
HiFi audio envelope input
Analog circuit power supply
Reset signal input
HiFi pre-amp, linear audio REC bias. REC PAUSE: L.
Video IC NTSC: H, PAL: L
Video IC
SHARPNESS control H: Active
Video IC Mute on: H, Mute off: L
Power supply
AF switching pulse output
RF switching pulse output
Capstan error output
Drum error output
Quasi VD pulse output
Not connected
SHARPNESS control H: Active
Not connected
CTL signal I/O
CTL signal I/O
Servo circuit ground
CTL amp control output
CTL amp control input
CTL amp control output
CTL amp output
Drum FG input
Drum PG input
Capstan FG input
Servo circuit power supply
OSD circuit power supply
Video signal input for character generator
Video signal output from character generator
External character brightness level input
AFC LPF pin input
AFC oscillator pin input
OSD circuit ground
DOSC IN