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9. Abnormal Picture
9-1. Horizontal Size
of the base of Q509
collector pulse
=1100Vp-p
of Q554 correct?
cathode waveform
80-310Vpp
Trouble in H.OSC/
Deflection Circuit
Refer to Horizontal Output circuit
Abnormal
H.Size
Is
the DC level
No
changeable?
Yes
Is the
Yes
Is the
of D568
correct?
Yes
At first, adjust controls in the OSD Menu
*
Is
the DC level
of IC501 pin 5
changeable ?
Trouble in Horizontal
No
output circuit
Check the B+ and
anode voltage of CRT.
No
Trouble in L835,
C543 or their ambient
circuit
24
Yes
Check IC501
pin 5
* Normally anode voltage
of CRT is approximately,
24KV
* Scan B+ are as follow :
MODE
B+ Voltage
VGA
72Vdc
Super VGA
86Vdc
54KHz
124Vdc
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