Bang & Olufsen BeoVision 1 On-Site Service Manual page 18

2.16 Adjustments, English
Geometry adjustments in format 2 (16:9)
Vertical Amplitude (V-AM)
Vertical Slope (V-SL)
Horizontal Amplitude (H-AM)
Horizontal Phase (H-PH)
East/West Parabola (EW-P)
East/West Upper Corner (EWUC)
East/West Trapezium (EW-T)
Horizontal PArallelogram (H-PA)
Adjust Tuner takeover, IF adjust and FM sound adjust
Only the adjustments mentioned has to be done.
- Switch the TV ON.
- Toggle on LIST until the Beo4 display shows FORMAT, then press GO and 2 to
select FORMAT 2.
- Enter Service Mode and select the MONITOR line.
- Select the GEOMETRY ADJUSTMENTS line.
When selecting an adjustment item the picture must change to 16:9.
- Adjust H-PH, EWLC, BOW, H-CT and V-SH to the values from format 1 and check
the fi xed values for format 2, see previous page.
- Adjust V-AM so that the picture fi ts at the top (i.e. 8mm from the top of the picture
to the top of the circle).
- Adjust V-SL until there is 99mm from the bottom of the circle to the bottom of the
visible screen.
- Adjust H-AM to the correct width of the picture.
- Adjust H-PH to the correct centering of the picture.
- Adjust EW-P to the correct geometry at the sides. The middle part of the vertical
lines must be as straight as possible.
- Adjust EWUC to the correct geometry at the upper corners.
- Adjust EW-T to the correct geometry.
- Adjust H-PA to the correct geometry.
It may be necessary to repeat some of the adjustments.
- Press GO to store the adjustments.
Exit Service Mode.
- The values (A) written on the label placed on PCB1, have to be written into the
EEPROM (6IC6) (see 7).
- Enter SETUP, select SERVICEMODE with 0, 0, GO. Press the button combination
within 3 seconds. Highlight TV-TUNER, select with GO. Change the settings by
means of l and n until they match the values on the label. Then press GO to
store the settings.
Exit Service Mode.