Troubleshooting The Modular Dmm - Agilent Technologies U2741A USB Service Manual

3 Service

Troubleshooting the modular DMM

34
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.
U2741A USB Modular 5.5 Digits Digital Multimeter Service Guide