Pioneer LD-V4300D Service Manual page 95

10. IC INFORMATION
• Block Diagram
•
IC103 (V7021): NTSC/PAL DECODER
• Pin Assignment
28
15
~o
0
14
• Pin Function
*
External applied voltage
No. Symbol Description
1
GNDl GND terminal of Y AMP and SYNC SEP.
2 SYNC OUT Output terminal of COMPOSIT SYNC. (TTL level)
3 BF OUT Burst flag output terminal. (TTL level)
4 ACK TC Time constant terminal of ACK (automatic color killer).
Burst flag position adjustment terminal.
5 TP ADJ
The burst flag position can be adjusted to tp (BF)
=
5.6
µs
by changing the current from this
terminal.
6 Vee
1
Power terminal of Y AMP and SYNC SEP.
Line alternate pulse output terminal.
7 ALT PLS OUT
During NTSC mode : L
During PAL mode : Alternately changes H to Land vice versa at every lH.
8
Vee 3 Power terminal of APC, HUE and VXO.
9
APCTC
APC (color synchronous) time constant and f0 adjustment terminal. The free-run frequency
of VXO can be adjusted by changing the DC voltage on this terminal to variable.
HUE adjustment terminal. Hue over ±30° can be adjusted by applying a voltage of Oto 5V
10 HUE ADJ to this terminal.
For the PAL mode, ground this terminal using a capacitor.
11 VXO2 Crystal oscillator terminal
129