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Appendix B: Maintenance
PS280 & PS283 User Manual
31
5. Verify that the line settings on the rear panel match the line
voltage. Do they?
Yes Go to step 7.
No Go to step 6.
6. Reset the line settings. Refer to Preparing the Power Supply for
Use on page 2.
7. Check the power cord.
WARNING. To prevent personal injury, be sure the power cord is
disconnected at both ends before you check it.
Is the power cord frayed or broken?
Yes Go to step 8.
No Go to step 2.
8. Replace the power cord.
9. The power switch is on. A variable output power supply is
connected to a circuit. The C.C. or C.V. indicator is on. Neither
variable output power supply is producing any electrical output.
Disconnect the instrument from the circuit. Check the output
terminals with a voltmeter. Are the outputs working?
Yes Go to step 10.
No Go to step 2.
10. Check the circuit you have been testing for a short or low
resistance.