CP-520/520A/520F Service Manual
DTV R&D Europe
15
HOR WIDTH
adjust for 93% overscan.
PARABOLA
CORNER B & CORNER T
EW TRAPEZ
3.7.7 AGC
- Make sure option bits are correct for the tuner fitted on the chassis (See above how to change
option bits).
- Adjust the antenna signal level at 62 dBµV
- Tune a colour bar pattern.
- Find the “AGC” item in service mode.
- Press the key “OK” on the remote keypad and wait until AGC level stabilise to the optimum
value.
- Alternatively, use “Vol Up/Dwn” keys to adjust manually to the desired Tuner Take Over Point
(TOP).