Technical data

34 U2741A USB Modular 5.5 Digits Digital Multimeter Service Guide
3Service
Troubleshooting the modular DMM
This section provides a brief check list of common failures.
Before troubleshooting or repairing the modular DMM, make
sure the failure is in the instrument rather than any
external connections.
Unit is inoperative
• Verify that the AC/DC adapter is connected to the
modular DMM.
• Verify that the front panel power indicator is lit.
• Verify that the USB cable is connected to the PC and the
USB inlet in modular DMM.
Current input is inoperative
Verify that the front panel 2 A, 250 V current fuse is
functional.
Power supply problems
Check that the AC/DC adapter is function and make sure
that its output voltage is 12 V.
Contact Agilent Technologies Service Centre to obtain
technical assistance, if necessary.