Table of Contents
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The failure of horizontal
unit orN201
2
Normal
Test filament voltage
Normal
Check the voltage
of all pins of N802
Normal
Video amplifying
board is abnorma
l
Check to see if +8V
voltage is normal at
PIN 17 of N201
No raster
Whether G2 voltage is normal
Abnormal
Heater Resistor
open
Abnormal
Inspect the circuit
from pin21 、22、
of N201 to video
amplifying board
T401,V401 or
C409,C416 are
broken
Normal
Check G201、N201 and
peripheral circuit of N201
Abnormal
Test the base voltage of V401
Normal
Check to see if be
voltage of V401 is
existed?
YES
NO
Check the voltage
of V401 collector is
normal
Lower
Higher
V401 is not well
welded or open
Abnormal
Change wrong component
or check peripheral circuit
Normal
Abnormal
Check +8V power supply
22
Abnormal
Check the circuit
from pin33 of N201 to
T401
InspectT401、
.
V401etc
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