Sub Contrast - Aiwa TV-F2400 Service Manual

3-2. SUB CONTRAST Sub-contrast Adjustment / Adjustment Menu Screen:
PAGE 3-1
Input Signal: Color Bar (QIW)
croma/OFF
Measuring Instrument: Oscilloscope Pattern generator / reader:
Test Point: S0901 R(R CATHODE)
1. Connect the oscilloscope to S0901 R.
2. Using the volume keys on the jig remote controller adjust
the pedestal level and the voltage of 100% white to 105 ± 2.0V,
according to Fig. 3-2.
3-3. SUB TINT Sub-Tint Adjustment / Adjustment Menu Screen: PAGE 3-3
Input Signal: Color Bar (VIDEO IN)
Measuring Instrument: Oscilloscope / Pattern generator / reader:
LCG4-1
Test Point: CNA704 3 PIN B
1. Connect the oscilloscope to CNA704 3 PIN B .
2. Using the volume keys on the jig remote controller, a
djust the top excursions of waveform "Magenta" and "Blue" to be linear
(Fig. 3-3).
3-4. SUB COLOR Sub-color Adjustment / Adjustment Menu Screen: PAGE3-4
Input Signal: Color Bar (VIDEO IN)
Measuring Instrument: Oscilloscope / Pattern generator / reader:
LCG-401
Test Point: CNA704 3 PIN B
1. Connect the oscilloscope to CNA704 3 PIN B .
2. Using the volume keys on the jig remote controller,
adjust the top excursions of waveform to be linear (Fig. 3-4).
PAGE 4
4. TV SETTING CHECK Confirmation of Model Setting /
Adjustment Menu Screen: PAGE4-1~4
Each setting is particular to each model. Do not make any changes to these fixed setting.
• Check if the details of the Adjustment Menu Screen are the same as those in Fig. 4.
If they were different, readjust them accordingly using the volume keys on the jig remote
controller.
3.58 TRAP
BPF
H AFC
WPL
* The details of 3.58 TRAP cannot be controlled.
0 : ON
2 : AUTO
1 : +1
0 : OFF
– 10 –
Fig. 3-2
Fig. 3-3
Fig. 3-4
Fig. 4