Table 5-5 Basic Troubleshooting Procedures - Agilent Technologies U1253B User's Manual And Service Manual

5 Maintenance

Table 5-5 Basic troubleshooting procedures

Malfunction
No OLED display after switching ON
No beeper tone
Failed to measure current
[1]
No charging indication
Battery life very short after full
charge/Battery not able to charge
after pro-long storage period
Remote control failure
Notes for basic troubleshooting procedures table:
1 Never turn the rotary switch of the multimeter from the OFF position when it is charging.
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• Check battery. Charge or replace battery.
• Check the Setup mode to verify whether the beeper function has been set to
OFF. If so, select the desired driving frequency.
• Check the fuse.
• Check 440 mA fuse.
• Check external DC adapter to ensure that its output is DC 24 V and that the
plugs are inserted properly into the charging terminals.
• Check if the correct rechargeable battery is used.
• Try to charge and discharge for 2 or 3 cycles in order to maintain the battery's
highest capacity.
• NOTE: The performance of the rechargeable battery may degrade with time.
• The Agilent logo on the IR-USB cable connected to the multimeter should be
facing up.
• Check the baud rate, parity, data bit, and stop bit (default is 9600, None, 8, and
1) in the Setup mode.
• Ensure that the required driver for IR-USB has been installed.
Troubleshooting procedure
U1253B User's and Service Guide