32
(7) No Vertical Scanning (One Horizontal Line)
Is the
waveform at
Pin 5 of I330
normal ?
Are the
voltages at Pin
2 of I330 14V
Pin 4 of I330
-9V ?
Is the
voltage at Pin 7 of
I330 normal
(1.8V) ?
Is the
waveform at
Pin 23 of I401
normal
?
Is the voltage
at Pin 21 of
I401 normal
?
voltage at Pin
22 of I401
normal
?
No vertical scanning
Deflection yoke is defective.
R334 is defective.
Check R347, R348
I330 is defective.
Check C302, C338,
R347, R348
I401 is defective
No
No
No
Yes
No
No
Yes
Yes
Yes
Yes
No
Yes
Check C328
Содержание 447ZiPlus
Страница 2: ...447R 2 ...
Страница 10: ...8 Fig 4 3 Fig 4 4 ...
Страница 37: ...35 10 CIRCUIT DIAGRAM ...
Страница 38: ...36 ...
Страница 39: ...37 11 PCB LAYOUT ...
Страница 40: ......
Страница 41: ...39 ...