Aiwa TV-FA2500 Service Manual page 54

1-4. OSD V OSD Vertical Positioning Adjustment
PAL
Adjustment Menu No. 94
Input signal : Crosshatch
Measuring instrument : Pattern generator / PAL
• Use the "CHANNEL" key to scroll through the adjustment menu screen and select
No.94.
• Using the volume keys on the jig remote controller, adjust A and B on both top and
bottom shown in the OSD screen to be equidistant from the screen edges. A = B
(Fig. 1-4)
NTSC
Adjustment Menu No. 89
Input signal : Crosshatch
Measuring instrument : Pattern generator / NTSC
• Use the "CHANNEL" key to scroll through the adjustment menu and select No.
89. To adjust, follow the same procedure as PAL.
1-5. PIF VCO Video IF • VCO Adjustment
Adjustment Menu No.17 (Page 1-5)
Input signal : No signal
Test point : IC3011PIN
<Auto adjustment>
1. Press "TEST" key to enter aging mode.
2. Press 1, the monitor will display "PLEASE WAIT PIF VCO".
3. Confirm the test point voltage is 2.5 ± 0.5V
<Manual adjustment>
If the auto adjustment fail, use volume keys on the jig remote controller and adjust the
test point voltage value to 2.5 ± 0.5V
1-6. RF AGC RF - AGC
Adjustment Menu No.18 (Page 1-6)
Input signal : Color bar (ANT RF - INPUT)
Test point : TU1011PIN
Measuring instrument : Oscilloscope
1. Connect oscilloscope to TU1011PIN.
2. Using the volume keys on the jig remote controller to adjust the test point voltage
value to 5.5 ± 0.4V
.
DC
.
DC
Pattern generator/PAL
.
DC
– 54 –