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TROUBLESHOOTING GUIDE
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and contrast, control clockwise Does DC16OV appear at the source of Q203?
3
Does drive pulse of 1Vpp appears at the pin 12 of IC203 Check the power supply circuits and high voltage regulation circuits. DllO, D113, IC102, QllO, DllO
NO
I
Check the IC203,X-RAY protector circuits and related circuits IC203
I
Does flyback appear at the collector of Q205?
I
NO
Check Q206,Q205,T202 and its related circuits.
Check the video circuits, heater circuits and its related circuits. D154, R163,l-202, IC401
CIRCUTI'TOBECHECKED
1. No raster appears - power circuits - horizontal output circuits 2. A high voltage develops but no raster appears -video output circuits 3. A high voltage is not developed -horizontal output circuits.
