2
Service and Maintenance
42
Keysight U1190A Series Service Guide
Troubleshooting
If the instrument fails to operate, check the batteries and the test leads. Replace
them if necessary. And if the instrument still does not function, check the
operating procedures in this manual. When servicing, use only the specified
replacement parts.
The table below will assist you in identifying some basic malfunctions.
WARNING
To avoid electrical shock, do not perform any service unless you are qualified
to do so.
Table 2-1
Operating checklist
Malfunction
Identification
No display when powered ON using the rotary switch
✔
Verify the batteries health and replace batteries as necessary.
Auto powered OFF after powered ON for a while
✔
Verify the auto power-off (APO) function is enabled in the clamp
meter’s Setup mode.
No backlight when the
/
key is pressed.
✔
Verify that the backlight function is enabled in the clamp
meter’s Setup mode.
No flashlight when the
is pressed for more than
1 second.
✔
Verify that the flashlight function is enabled in the clamp
meter’s Setup mode.
No continuity visual alert (flashing backlight when
measuring less than the threshold resistance)
✔
Verify that the continuity visual alert is enabled in the clamp
meter’s Setup mode.
Содержание U1190A Series
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