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5.4 Adjustments, English
Adjustments, English 5.5
G2 (cut off) adjustment
TV mode
V.TAPE
Format
16:9, Format 3
Test picture Black or no source connected.
Menu setup
Picture – Brilliance 32, Colour 32, Contrast 44
Service Menu setup
Not used
- Measurement with an oscilloscope.
Connect oscilloscope ground to GROUND on PCB3, see
3.
Measure the level of the test puls on the test points R, G and B, see
3.
Select the measuring point with the highest level and adjust by means of G2 until
the puls is 145 ± 3V.
- Adjust with a multi-meter (Ri > 1 Mohm).
Set the multi-meter in a DC-voltage area of minimum 200V.
Connect the ground probe on the ground on PCB3, see
3.
Measure the voltage level on the test points R, G and B, see
3.
Notice the measuring point with the highest voltage level and place the measuring
probe on this point.
Select the measuring point with the highest level and adjust by means of G2 until
the voltage level is app. 167V.
Focus adjustment
TV mode
V.TAPE
Format
16:9, Format 3
Test picture Test picture 16:9
Menu setup
Picture – Brilliance 32, Colour 32, Contrast 44
Service Menu setup
Not used
Connect external VTR to the TV.
Use test tape, 6780000.
Press
V.TAPE
Cover the display panel e.g. with a soft cloth to prevent back light adjusting the
contrast.
Adjust FOCUS 1, Vertical line no 2 in the right side.
Adjust FOCUS 2, Horizontal line no 3 from the top.
Repeat vertical and horizontal adjustment minimum twice, always ending with
horizontal, FOCUS 2, see
2.
145V
ABO-CENTER
v/HENRIKSENS
ELEKTRONIK