VL-PDI U
3. VF contrast adiustment
Test point TL8814 (VG)
Address VCR ADJ 75
Mode
VCR AV input
Procedure
1) The input signal must be 3-step wave.
2) Connect TL8825 (IC8800 pin 53) to GND.
3) Change the address 71/72 to 00.
4) Adjust the pedestal -100% interval of wave form of TL8814 to the specified level.
0.85 + O.lVp-p Adjustment
rating
Remark
Examples
, n,l 0.85If:O.l Vp-p,
GND
l During IC703(E*PROM) replacement.
l During IC8800 replacement.
4. VF y 1 adjustment
Test point TL8814 (VG)
Address VCR ADJ 72
Mode VCR AV input
Procedure 1) The input signal must be 3-step wave.
2) Connect TL8825 (IC8800 pin 53) to GND.
3) Adjust the pedestal -50% interval of wave form of TL8814 to the specified level.
1.5 + 0.1 vp-p
Adjustment
rating
Remark
Examples
J-L ”
r\ 1.5kO.l vp-p
l During IC703(E*PROM) replacement.
l Durina
IC8800 replacement.
5. VF sub briaht
R/B adiustment
Test point 1 View Far panel area
I
Address VCR ADJ 74 (R) VCR ADJ 73 (B)
Mode VCR AV input
Procedure
1) Feed 40% white signal to the AV input jacks and the standard monitor.
2) Adjust the tone of the colour with the VCR ADJ addresses 73 and 74 until it becomes the same as that
of the standard monitor.
Adjustment
rating
Remark Make this adjustment after 5-minute or longer aging.
Examples
l During IC703(E2PR.0M) replacement.
l During IC8800 replacement.
10-14
To Next Page
Loading...
