9. Abnormal Picture
9-1. Horizontal Size
*At first, adjust controls in the OSD MENU.
Abnormal
H. Size
Is the
No
changeable the
OK
B+ line voltage?
Yes
Is the
Yes
226Vgate voltage
Trouble in D507, D520.
of the Q521
0
correct?
NO
Is the
Yes
12Vwaveform of theCheck the Q520, D505
10V
pin6 in IC505and their ambient circuit.
0
correct?
NO
3.0V
Is the
YesCheck the IC508, Q506
waveform of the
1.4Vpin4 in IC505and their ambient circuit.
0correct?
NO
3.1VIs the
waveform of theNo
2.6V
pin1 in IC504Check the pin 2 in IC505.
correct?
0
Yes
Is the
8VYes
waveform of the
Control the VR501.
7.5Vpin9 in IC501(E/W)
correct?
0
NO
Trouble in IC501.
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