Level Adjustment (Ntsc); Burst Gate Pulse Width Adjustment (Pal); F0 Adjustment (Pal); Pal B-Y Phase Adjustment - Sony TRINITRON PVM-14L5 Service Manual

4-3-7. 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.
A
Standard value : A = 620
Fig. 4-32
3. Adjust PB LEVEL (AE-1C) of the menu until the
waveform at TP3802 meets the standard value.
B
Standard value : B = 620
Fig. 4-33
4. Adjust PR LEVEL (AE_24) of the menu until the
waveform at TP3801 meets the standard value.
C
Standard value : C = 620
Fig. 4-34
4-10
4-3-8. Burst Gate Pulse Width Adjustment
1. Input the PAL 100 % color bar signal to the VIDEO
2. Adjust BGP W (A-11) of the menu until the waveform
±
10 mV

4-3-9. 4.43 f0 Adjustment (PAL)

1. Input the PAL 100 % color bar signal to the VIDEO
2. Short circuit IC2803 pin-1 and TP2803 (5 V).
±
10 mV
3. Adjust F0 (AE_1B) of the menu until the waveform at
±
10 mV

4-3-10. PAL B-Y PHASE Adjustment

1. Input the PAL 100 % color bar signal to the VIDEO
2. Adjust SUB PHASE (AE-30) of the menu until the R-Y Anti-
(PAL)
IN connector of INPUT A.
at TP2804 meets the standard value with reference to
the waveform at TP801.
TP801
TP2804
Standard value : A = 3.8
Fig. 4-35
IN connector of INPUT A.
TP3802 moves slowly as shown.
Fig. 4-36
IN connector of INPUT A.
PAL signal waveform at TP3802 becomes "0" as shown.
Anti-PAL signal
R-Y (90d/90d)
Fig. 4-37
Note that the Anti-PAL changes every 1H. Therefore,
make adjustment so that the average value becomes "0".
A
±
0.1 u u u u u sec
PVM-14L5/20L5/D14L5A/D20L5A