Troubleshooting; Cleaning; Replaceable Parts/Accessories - HP 972a User Manual

Maintenance

Troubleshooting

Problem
Unit won't turn on
Unit won't turn off
Display flashes
and
Rapid beeps
Battery Annunciator on
Unable to measure
current
10 A or mA - µA

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.
1 - 16
Possible Cause
Dead Batteries
Input limit exceeded
Input limit exceeded
Test leads in wrong
terminal for measurement
function
Low battery voltage
Open input protection fuse
Suggested Action
Replace batteries
Remove test leads and press any key to reset
Remove test leads and press any key to reset
Change test leads or function switch position
Replace batteries
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.