HP 972a - Troubleshooting and Cleaning

Troubleshooting
Problem Possible Cause Suggested Action
Unit won’t turn on Dead Batteries
Replace batteries
Unit won’t turn off Input limit exceeded
Remove test leads and press any key to reset
Display flashes
and
Rapid beeps
Input limit exceeded
Remove test leads and press any key to reset
Test leads in wrong
terminal for measurement
function
Change test leads or function switch position
Battery Annunciator on Low battery voltage
Replace batteries
Unable to measure
current
10 A or mA - µA
Open input protection fuse
Check fuse. Connect test lead between V input
terminal and 10A or mA µA terminal. Unit will
rapidly beep if fuse is OK. Replace fuse if no
beep.
Cleaning
Wipe instrument with a soft rag dampened with soap and water. Do not immerse in water.
Do not use chemical cleanser or solvents.
Replaceable Parts/Accessories
Refer to the disassembly diagram on page 6-5.
Maintenance
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