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3. The pattern below can not be corrected by turning the neck.
* Gun rotation
The beam is twisted at both
sides on the X axis and Y
axis.
won
* HCR large (small)
At both sides of the screen,
(G)
the G raster horizontal
component is wider
R
(narrower) than those of the
R and B rasters.
* VCR large (small)
At both sides of the screen,
the G raster vertical
component is wider
(narrower) than those of
the R and B rasters.
3-7. G2 ADJUSTMENT
Input a 525 monoscope signal.
Connect the oscilloscope to A board TP403.
Of the three reference pulses, measure the lowest one.
With the Screen VR, adjust so that left end of the waveform
is: 1.40+0.1V
Pew
1.40V
(V
SYNCHRONIZATION)
GND
Since the waveform is
triangular as shown on
the left, adjust the left
end to be 1.40V.
A BOARD
za
(COMPONENT SIDE)
3-8. WHITE BALANCE ADJUSTMENT
For measuring equipment, use a color analyzer. (for example from
Minolta, etc.)
1. Input a 525 monoscope signal.
(Input from Line A with no burst.)
2. Set:
CONT «eee 0%
BRT vse. 50%
3. Ona
20-tone gray scale, adjust service mode
so that
O and 5 IRE -> cut off
10 IRE — slight glow
4. Input 525 all-white (no burst).
Set CONT to 80%.
6. Adjust the all-white signal luminance so that the screen
luminance is 3 NIT.
7. Press MENU and select COL TEMP/SEL.
Select Ti : 6500K.
9. Put the unit into service mode. (*1)
*1 : Set[3200
K SW]to 0 for both T] and T2.
10. Adjust to the standard values with [C/T1 XXOOK BIAS].
(G must be fixed at "512".) (*2)
*2 : Adjust the cut-off to be 3 NIT.
Spec. 6500K + 8M PCD
11. Switch the all-white signal luminance to 100 IRE
12. Adjust to the Standard values with <RED> and <BLUE> of
C/T1 GAIN XX00 K}.
(G must be fixed at "700")
13. Repeat Items 10, 11 and 12 until the adjustmentis
complete,
then write the adjustment data.
14. Press MENU and select COL TEMP/BAL.
15. Select T2 : 5600K.
16. In the same manner as in Items 10, 11, 12 and 13 make the
C/T2 5600K BIAS }and|C/T2 5600K GAIN | adjistrments.
Spec. 5600K + 8M PCD
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