ViewSonic E95 - Page 65

2. Horizontal deflection circuit is defective
The horizontal deflection
circuit is defective
Is the voltage on terminal
TP201=198V?
Is the power supply
circuit normal?
Is the voltage on terminal
TP202=80V?
Check power supply
circuit
Yes
4.6Vp-p - No
Is the pin15 waveform of Check H fanat
1C401 normal? sai dope
No
Dv. Is the pin6 waveform of Check booster convertor
PP 1C401 normal? circuit Q406, Q407, Q408
No -
24V, Is the pin26 waveform of Check I1C401 pin26
PP 1C401 normal? normal?
M | M | ibe wari of O41
s the waveform o : é
64Vp-p "Drain" normal? Q412 is defective
Yes
Is the waveform of Q415 Horizontal drive is
"BASE" normal? defective T401, Q415
Yes
0.8Vp-p
Horizontal
scan
circuit
is
defictive C427, C428,
Is the horizontal scan C432, C434, C435, C436,
Q420, Q421, Q422, Q423,
Yes Q424, 1C303
CRT is defictive
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