3-3-7, Level Adjustment (Ntsc); Burst Gate Pulse Width Adjustment (Pal) - Sony TRINITRON PVM-14L3 Service Manual

3-3-7. Level Adjustment (NTSC)
1, Input the NTSC 100 % color bar signal to the VIDEO.
IN connector of INPUT A.
2. Adjust Y LEVEL (AE-04) of the menu until the
waveform at TP801 meets the standard value.
'Standard vaiue : A = 620 +10 mv
Fig. 3-32
3. Adjust PB LEVEL (AE-1C) of the menu until the
waveform at TP3802 meets the standard value.
'Standard value ; 8 = 620 +10 mV
Fig. 3-33
4, Adjust PR LEVEL (AE—24) of the menu until the
waveform at TP3801 meets the standard vatue.
Standard value : C = 620+10 mV
Fig. 3-34
3-10
3-3-8. Burst Gate Pulse Width Adjustment
(PAL)
1, Input the PAL 100 % color bat signal to the VIDEO
IN connector of INPUT A.
2. Adjust BGP W (A-11) of the menu until the waveform.
at TP2804 meets the standard value with reference to
the waveform at TP801 as shown in Fig. 3-35.
TP8O1
TP2804
'Standard value : A = 3.8 £0.1 usec
Fig. 3-35
3-3-9. 4.43 FO Adjustment (PAL)
1, Input the PAL 100 % color bar signal to the VIDEO
IN connector of INPUT A.
2. Short circuit IC2803 pin-1 and TP2803 (5 V).
3. Adjust FO (AE-1!B) of the menu until the waveform at
TP3802 moves slowly as shown.
Fig. 3-36
3-3-10. PAL B-Y Phase Adjustment
1. Input the PAL 100 % color bar signal to the VIDEO
IN connector of INPUT A.
2. Adjust SUB PHASE (AE-30) of the menu until the R-Y Anti-
PAL signal waveform at TP3802 becomes "0" as shown.
Anf-PAL signal
R-Y (90°/90°)
t
t
a
Fig. 3-37
Note that the Anti-PAL changes every 1H. Therefore,
make adjustment so that the average value becomes "0".
PVM-14L3/1414/2014