Advertisement
Indicators or Areas to check
Problem
Power ON lamp does not light
Power supply will
up.
not go on.
Voltmeter does not move.
No output voltage.
Ammeter does not move.
No output current.
Output voltmeter and ammeter
Excessively large
readings do not decrease.
output.
Input voltage is wrong.
Unstable output.
Machine is vibrating.
Strong magnetic or electrical
field nearby.
8. T R O U B L E S H O O T I N G
Cause
* Poor connection of power cord, or broken
wire
* Bad power switch
* Fuse meltdown
* Circuit malfunction
* Circuit malfunction
* Bad power trasistor or control mechanism
* Circuit malfunction
* Operating outside the rated voltage range
* Oscillations due to special load type
* Remove from source of oscillations.
15
Advertisement
