Keysight Technologies U1450 Series Service Manual

Keysight Technologies U1450 Series Service Manual Manual pdf 56 page image

2 Service and MaintenanceTroubleshooting54 U1450 Series/U1461A Service GuideTroubleshootingIf the instrument fails to operate, check the batteries and the test leads.Replace them if necessary. If the instrument still does not function, checkthe operating procedures in this manual. When servicing, use only thespecified replacement parts.The table below will assist you in identifying some basic malfunctions.WARNING To avoid electrical shock, do not perform any servicing unless you are qualified to doso.CAUTION Any repair or service which is not covered in this manual should only be performed byqualified personnel.Table 2-1 Operating checklistMalfunction IdentificationNo display when powered ONusing the rotary switch❏ Verify the batteries health and replace batteries as necessary.No beeper tone ❏ Verify that the beeper is enabled in the Setup mode.Failed on currentmeasurement (U1461A only)❏ Verify the fuses health and replace the fuses as necessary.Failed on remote control❏ Verify the optical side of the IR-USB cable connected to thetester — the Keysight logo should be facing up.❏ Verify the baud rate, data bit, and parity settings in thetester’s setup mode. (Default values are 9600, 8, and none.)❏ Verify that the driver for the IR-USB interface is installed onthe PC.