Pin No.
Pin Name
I/O
Description
41
GND.
The video signal is output to the RF modulator and line output jack.
GND.
Horizontal sync is used to lock the OSD.
(Reduce Jitter)
GND.
OSD DOT CLOCK oscillator. (OSD charactor oscillator)
Determining the horizontal position (left or right) of OSD.
Oscillator for OSD Sync. signal.
Generating a blue background.
- Receives composite signal from Y/C circuit.
- Separates V-sync and H-sync in the OSD internal block.
- The sync signal determines the character position of OSD.
Level control for PB CTL. (to CTL control circuit)
Y/C processing of Video signal at SCAM/MESECAM. (to Y/C)
1. Port to detect CST(cassette tape) switch input state.
2. With CST S/W input state, determaines whether CST tape is inserted or not.
SCART 8 pin level control to GND or 12V. (to SCART 1)
High “H” applied, turns on the OSD or POWER.
1. A signal to switch voltages (5.3V, 12V)on/off whitch is controlled by the power
key.
2. Outputs “H” in power On mode. Outputs “L” in power Off mode.
A signal to control capstan motor’s direction of rotation.
“L” output = reverse direction. “H” output = forward direction.
1. Outputs “H” to mute audio signal in search mode and without sync signal.
2. Outputs “H” to eliminate pop noise generated in each mode during early switching
point (Approx. 500ms)
(EE/VV, TUNER/LINE, POWER ON/OFF, CH. UP/DOWN etc.)
Now TUNER system is SECAM-L. (to TUNER)
SCART 8 pin level control to GND or 7V. (to SCART 1)
Output chip enable signal for ACSS IC (IC5A1)
POWER switching of VPS I.C Vdd in POWER off state.
1. Outputs “H” to mute speakez.
2. Outputs “H” to eliminate pop noise generated in speakez.
GND.
1. 32.768 kHz oscillator is used as standard clock for clock display.
2. When Vcc supplied, oscillation occurs.
µ
-COM main ground.
1. 10MHz oscillator is used to generate the standard clock used to operate the u-COM.
2. When Vcc is applied, Oscillation occurs. (But, when “L” is applied to pin 89 in
power failure, Oscillation stops.)
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
69
70
71
72
73
Vref (OSD)
CV OUT
CHAR BIAS
AFC LPF
AFC OSC
Vss (OSD)
DOSC IN
DOSC OUT
4fsc OUT
4fsc IN
COMPOSITE SYNC.
CTL GAIN ADJ
SHC/MEC “H”
CST IN
SCART “H”
VIDEO Mute “H”
POWER
CONTROL “H”
CAPSTAN
REVERSE
AUDIO MUTE “H”
X-TAL 2
X-TAL 1
Vss
OSC 1
OSC 2
–
O
–
I
–
I
O
O
I
I
O
O
I
O
O
O
O
O
O
O
O
O
I
–
O
I
–
I
O
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
