ViewSonic E70F - 17" CRT Display User Manual

1. Power supply is defective.
No power or power
abnormal
Power indicator
LED don't light
Is F101 normal?
Is CR101, NTC
101 normal?
Is IC101 normal?
Is Q101 or R111,
R112 normal?
Check horizontal
and vertical circuit
Replace F101
Replace CR101,
NTC 101
Replace IC101
Replace Q101 or
R111, R112
Does the power
indictor LED light
once and the go out?
Check horizontal circuit
and power on again
Is the power indicator
LED light normally?
Check vertical circuit and
power on again
Is the LED normal?
Check video circuit
Are TP201~TP209
voltage normal?
Check D202, D203,
D205, D206, D207, Q203,
Q206, Q208, Q210
Is the T101 normal?
Replace T101
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Yes
No
No
Yes
No
No
Yes
6. Trouble Shooting Flow Chart
38
ViewSonic Corporation Confidential
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Do Not Copy 70f+SB-3E

ViewSonic E70F - 17" CRT Display Specifications

General

Brand	ViewSonic
Model	E70F - 17" CRT Display
Category	Monitor
Language	English