Aiwa TV-FA2500, Service Manual

Page: 52 / 61

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Menu screen adjustment:
• Operate after inputting the following initial figures when replacing EEP ROM.
These initial figures are only for reference purposes and meant for rough adjustment.
• Check the condition and adjust the area where the general repair is carried out.
Sample Indication for Adjustment Menu No.
Each adjustment should be carried out after checking the
adjustment menu no. (Refer to the above Fig.)
Initial Figures
0B
04
– –
10
80
3F
80
80
80
40
40
40
08
08
20
20
12
3F
Fig. 1
TV-FT2588
PAGE 1
1. H POS
2. V POS
– – – – –
4. OSD H
5. PIF VCO
6. RF AGC
PAGE 2
1. R CUT OFF
2. G CUT OFF
3. B CUT OFF
4. G DRV GAIN
5. B DRV GAIN
6. BRIGHT
PAGE 3
1. SECAM B-Y
2. SECAM R-Y
3. RGB CONT
4. H SIZE
5. V SIZE
6. TINT
PWB Adjustment / Do before entering the adjustment mode
1. H SIZE Horizontal Size Crosshatch
Input signal : Crosshatch
Adjustment point : SFR653
Measuring instrument : Pattern generator / PAL
•
Use SFR653 to adjust the dot mark of the crosshatch to the center.
(So that the number of measure become the same horizontally and vertically)
2. PIN & BARREL Pin Phase & Pin Amplitude (Barrel) Adjustment (Linearity).
PAL
Input signal : Crosshatch
Adjustment point : SFR652 / PIN (Fig. A)
SFR651 / BARREL (Fig. B)
Measuring instrument : Pattern generator / PAL
•
Adjust the crosshatch distortion.
a. Use SFR652 to adjust the vertical distortion (Fig. A).
b. Use SFR651 to adjust the horizontal distortion (Fig. B).
• Repeat 1~2 until the vertical lines become straight.
NTSC
Adjust Menu No.79
Input signal : Crosshatch
Measuring instrument : Pattern generator / NTSC
•
Use the “ CHANNEL” key to scroll through the adjustment menu and
select No.79.
• Using the volume keys on the jig remote controller, adjust vertical part of
crosshatch screen to be straight.