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7-1, Dynamic Focus
-PIN 14
er a
<H-frequency>
-PIN 16
<V-frequency>
* Check after adjust the static focus
finely by VR in FBT.
Corner focus
is poor
1. Check the CRT socket
or connector wire
2. Trouble in FBT or CRT
DF pin of FBT
wave form
correct?
Is
the base wave
form of Q604
correct?
Yes
Troubie in
Q551 or Q550
Is
IC602 pin 14,
16 wave form
correct?
Yes
Trouble in
Q601, Q602, Q603
C514 correct?
V.sync in pin 1
Yes
of iC604, H.sync in
pin 1 of 1C603
correct?
Trouble in IC603, 604
Trouble in H.V Sync
line to IC603, 604
17
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