JVC AV-14F704 Service Manual page 10

AV-14F704
2-13: TINT/COLOR CENT
1. Receive the color bar pattern. (RF Input)
2. Connect the oscilloscope to TP024.
3. Using the remote control, set the brightness, contrast, color and
tint to normal position.
4. Activate the adjustment mode display of Fig. 1-1 and press the
channel button (24) on the remote control to select "TINT".
5. Press the VOL. UP/DOWN button on the remote control until the
section "A" becomes a straight line
(Refer to Fig. 2-2).
6. Connect the oscilloscope to TP023.
7. Press the CH DOWN button 2 times to set to "COL. CENT"
mode.
8. Adjust the VOLTS RANGE VARIABLE knob of the oscilloscope
until the range between white 100% and 0% is set to 4.4 scales
on the screen of the oscilloscope.
9. Press the VOL. UP/DOWN button on the remote control until the
red color level is adjusted to 115 ± 10% of the white level.
(Refer to Fig. 2-3)
10. Receive the color bar pattern. (Audio Video Input)
11. Press the TV/VCR button on the remote control to set to the AV
mode. Then perform the above adjustments 2~9.
12. Press the TV/VCR button on the remote control to set to the CS
mode.
13. Activate the adjustment mode display of Fig. 1-1 and press the
channel button (24) on the remote control to select "TINT".
14 Press the VOL. UP/DOWN button on the remote control to set
the same step numbers as the AV.
15. Press the CH DOWN button 2 times to set to "COL.CENT"
mode.
16. Press the VOL. UP/DOWN button on the remote control to set
the same step numbers as the AV.
"A"
White 100%
10
Fig. 2-2
100%
RED Level
Fig. 2-3
No. 52130
2-14: CONTRAST MAX MANUAL
1. Activate the adjustment mode display of Fig. 1-1 and press the
channel button (18) on the remote control to select "CONT.
MAX".
2. Press the VOL. UP/DOWN button on the remote control until the
contrast step No. becomes "89".
3. Receive a broadcast and check if the picture is normal.
4. Press the TV/VCR button on the remote control to set to the AV
mode. Then perform the above adjustments 1~3.
5. Press the TV/VCR button on the remote control to set to the CS
mode.
6. Activate the adjustment mode display of Fig. 1-1 and press the
channel button (18) on the remote control to select "CONT.
MAX".
7. Press the VOL. UP/DOWN button on the remote control until the
contrast step No. becomes "72".
2-15: Confirmation of Fixed Value (step No.)
Please check if the fixed values of the each adjustment items are
set correctly referring below.
NO. FUNCTION
02 H. VCO
04 AFC GAIN
05 V. SHIFT
06 H. SIZE
09 VS CORRECTION
15 BRIGHT MAX
17 BRIGHT MIN
19 CONTRAST CENT
20 CONTRAST MIN
21 COLOR MAX
23 COLOR MIN
25 SHARPNESS
26 Cb DELAY FINE
27 Cr DELAY FINE
28 Cb PEDESTAL ADJ
29 Cr PEDESTAL ADJ
30 E/W PARABOLA
31 E/W CORNER
32 E/W TRAPEZIUM
RF/AV/CS
03
06
00
00
42
150
75
50
18
90
00
35
00
00
08
08
31
31
31