Service manual

76
Pin
Name
Voltage and
Peripheral circuit of pins Description of function
No. wave Information
39
PEDESTAL
About 2.2V
CLAMP
40
VIDEO TONE
4.5V
CONT.
41 Y IN 3.3V
42
EXT VIDEO
IN
Used to connect a hold
capacitor.
Sharpness control pin.
By increasing voltage,
the pin is set to soft side.
Make an entry at low
input impedance to
avoid pedestal clamp.
Standard coupling capa-
cltor is 0.1µ F. Make an
entry at 0.5Vp-p.
Make an entry at 1Vp-p.
DESCRIPTION OF PIN (cont).
1.4k
15k
1.5k
6.2k
4.5V
10k
1.4k
1.2k
1.07k
3.9k 1k
5k