Technical data

Maintenance 5

Agilent U1251B/U1252B User’s and Service Guide 99

5 After pressing Shift or when the self- test starts, the meter

performs a self- test to check if the battery in the meter is

the rechargeable type. The self- test takes about 2 to 3

minutes. Avoid pressing any button during the self- test. A

message is diplayed as shown below.

Figure 5-2 Self test

Error Condition Secondary Display

• No battery in the meter

• Battery failing

• Battery is full