Sony Trinitron PVM-14L3 - 3-2-2-2, CHROMA Leak Adjustment; MATRIX Adjustment

3-2-2-2. CHROMA Leak Adjustment
a4
Set the CHROMA to “0” using the PC tools.
Connect an oscilloscope to TP302.
Adjust the CHROMA PB (A2—8A) data on the
MENU so that the pedestal portion becomes flat as
shown in Fig. 3-6.
‘Make flat
——__4_
Standard value : 0+20 mV
Fig, 3-6
Connect an oscilloscope to TP402.
Adjust the CHROMA PR (A2~89) data on the MENU
so that the pedestal portion becomes flat as shown in
Fig. 3-7.
Make flat
‘Standard value ; 0 £20 mV
Fig. 3-7
3-2-2-3. MATRIX Adjustment
a8
2
Connect an oscilloscope to TP1251.
Adjust the Y LEVEL (A287) data on the MENU so.
that the amplitude becomes the standard value as
shown in Fig. 3-8,
‘Standard value : A = 540 +20 mVp-p
Fig. 3-8
Remove the difference in amplitudes between the first
step and the second step of the waveform with G-Y/B
{A2~AA) on the MENU as shown in Fig. 3-9.
Remove the difference in amplitudes between the
second step and the third step of the waveform with G-
Y/R (A2-9C) on the MENU. Repeat the adjustments
until the top peak of the waveform becomes flat.
G-Y/R variable adjustment
G-Y/B variable adjustment
Make flat
0420 mV
Fig. 3-9
Connect an oscilloscope to TP1351.
Adjust the PB LEVEL (A2—E1) data on the MENU so
that the first step and the fourth step of the waveform
have the same amplitude as shown in Fig. 3-10.
Adjust for the same amplitude.
0 +20 mV
Fig. 3-10
Connect an oscilloscope to TP1451.
PYM-T4L3/14Ld/20L4