30
IC DESCRIPTION
SYSCON PCB OEC7043C (IC1001)
PIN NO.
PIN NAME
I/O
DESCRIPTION
1
MSSEN A
I
Input terminal of mecha state sensor.
2
MSSEN B
I
3
EOT
I
Tape end sensor input signal.
4
BOT
I
Tape start sensor input signal.
5
HI-FI ENV
I
Input terminal of Hi-Fi RF envelope.
6
VIDEO ENV
I
Input terminal of video RF envelope.
7
AFT
I
Input terminal of AFT.
8
X-RAY
I
X-RAY detection input.
9
KEY 1
I
Main unit key input.
10
KEY 2
I
11
CAPSTAN FWD
O Capstan forward and backward command. (forward "L" output)
12
CAPSTAN LIMIT
O Switch the maximum output current of the Capstan Motor.
13
DUMMY V.SYNC
O Virtual V Pulse output.
14
REMOCON IN
I
Receive the remote control signal.
15
COLOR ROTARY
O Color Rotary Control output.
16
HEAD AMP.SW
O Switching output of Head Amp SW on 4 heads.
17
ENV COMP IN
I
Comparison results input of Playback Envelope level ON SP/LP heads (4heads)
18
VIDEO HEAD SW
O Output terminal of Head SW to Y/C/A and Head Amp.
19
HI-FI HEAD SW
O Output terminal of audio Head SW to Y/C/A and Head Amp.
20
LDM RVS
O Output signal to control the rotation direction of the loading motor.
21
LDM FWD
O
22
DEGAUSS-H
O Degauss control output
23
MSSENS CTL
O MSSEN sensor LED.
24
SP-H
O Output HIGH at tape speed SP.
25
IIC OFF
I
When input "L" the I2CBUS communication is stopped.
26
EXT MUTE
O Mute signal of external video mute.
27
VCR POWER
O VCR power output.
28
TV POWER
O TV power output.
29
T-REC LED
O T-REC indication LED output.
30
REC LED
O REC indication LED output.
31
ON TIMER LED
O ON-TIMER indication LED output.
32
OTPB LED
O OTPB indication LED output.
33
INPUT SELECT
O Output terminal for internal/external switching control.
34
RESET
I
RESET will be done when the voltage goes to HIGH after the reset signal.
35
XCIN
I
Subclock pulse (32kHz)
36
XCOUT
O
37
VCC
- 5V
38
XIN
I
Connect the main crystal (10MHz)
39
XOUT
O
40
VSS
- Ground.
41
X-RAY TEST
O X-RAY test output
42
CS REC LED
O CS REC indication LED output.
43
CLKSEL
I
5V
44
OSC IN
I
Terminal to connect the OSD circuit.
45
OSC OUT
O Terminal to connect the OSD circuit.
46
NUB
- Ground.
47
AV 1
O Not used.
48
AV 2
O Not used.
49
OSD VSS
- Ground.
50
TAB SW
I
Input terminal for judge the tape if it has TAB or not.
51
SERVICE
I
Input terminal for Service Mode.
52
SD IN
I
Not used.
GUIDE FOR REPAIRING
