Nokia 447ZiPlus Service Manual page 33

17” colour monitor
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(6) Loss of Horizontal Synchronization
Loss of horizontal
synchronization
Is the
waveform at
Pin 33 of I401
normal ?
No
Is the
waveform at
Pin 39 of I501
normal
?
Yes
Check I501
Yes
Check I401
C414, R409,
C468
No
Check Q550,
C550, R551,C551
31

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