22
V SIZE
V LIN
S CORRECTION
V CENTRE
H CENTRE
H SIZE
PIN AMP
PIN PHASE
CORNER PIN
V ANGLE
Before adjustment After adjustment
BELL FILTER ADJUSTMENT (
Secam models only
).
Note : Ensure that the TV set has been powered up for at least
1 minute to allow for drift before carrying out the following
adjustment.
1. Input a video SECAM Colour Bar signal via AV1.
2. Connect an oscilloscope to pin 1 of CN504 [R-OUT] on the
A board.
3. Enter into the ‘Picture’ menu and select ‘Bell-f0’.
4. Decrease the register of ‘Bell-f0’ until the following waveform
change between RED and BLUE is obtained.
5. When the correct waveform has been obtained add an
additional 7 steps to the register.
DEFLECTION SYSTEM ADJUSTMENT
1. Enter into the ‘Geometry’ service menu.
2. Select and adjust each item in order to obtain the optimum
image.
GEOMETRY
V centre Adj
V size Adj
V Lin Adj
S Corr Adj
H Cent Adj
H Size Adj
Pin Amp Adj
Corner Pin Adj
Pin Phase Adj
V Bow Adj
V Angle Adj
Upper V Lin Adj
Lower V Lin Adj
Left HBLK 07
Right HBLK 07
CD Mode (AV) 01
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