Sony KV-14FV1B Service Manual page 45

X'tal OSC CHECK
Mode
Signal
Measurement Point
Measurement Equipment
Specified Value
Check: 1)Confirm the frequency is 4.433619MHz±100Hz(PAL).
2)Confirm the waveform amplitude is 500±200mVp-p.
4.433619MHz ± 100Hz (PAL)
SYNC AGC CHECK
Mode
Signal
Measurement Point
Measurement Equipment
Specified Value
Check: Confirm the waveform amplitude is 1.0±0.1Vp-p.
Fig.3-4
PB
Alignment tape, Stair step
MA10 board IC802 %ªpin(PAL)
Oscilloscope
500±200mVp-p
500 ± 200mVp-p
Fig.3-3
E-E
Color bar
MA10 board Q830 emitter
Oscilloscope
1.0±0.1Vp-p
1.0 ± 0.1Vp-p
CARRIER DEVIATION CHECK
Mode
Signal
Measurement Point
Measurement Equipment
Specified Value
Check: Confirm f
-f
2
Confirm f
f
1
WHITE/DARK CLIP CHECK
Mode
Signal
Measurement Point
Measurement Equipment
Specified Value
Preparation: Add 3.3k r esistor between IC802 $™pin and GND.
Check: Taking the height from sync to white level as 100%, check
white clip and dark clip.
– 49 –
E-E
Color bar
MA10 board IC802 !•pin
Spectrum Analyzer
f -f =1.00±0.08MHz
2 1
=1.00±0.08MHz
1
=3.80±0.13MHz(PAL)
1
f
2
Fig.3-5
E-E
Color bar
MA10 board IC802 #¶pin
Oscilloscope
190±20%(White), 55±20%(Dark)
100%
Fig.3-6
White clip
Dark clip