Troubleshooting; Table 2-1 Operating Checklist - Agilent Technologies U1270 Series Service Manual

2 Service and Maintenance

Troubleshooting

Troubleshooting

WA R N I N G
C A U T I O N
52
To avoid electrical shock, do not perform any servicing unless you
are qualified to do so.
Any repair or service which is not covered in this manual should only
be performed by qualified personnel.
If the instrument fails to operate, check the batteries and
the test leads. Replace them if necessary. If the instrument
still does not function, check the operating procedures in
this manual. When servicing, use only the specified
replacement parts.
The table below will assist you in identifying some basic
malfunctions.

Table 2-1 Operating checklist

Malfunction
No display when powered
ON using the rotary switch
No beeper tone
Failed on current
measurement
Failed on remote control
Identification
❏
Verify the batteries health and replace
batteries as necessary.
❏
Verify that the beeper is enabled in the
multimeter's setup mode.
❏
Verify the fuses health and replace the fuses
as necessary.
❏
Verify the optical side of the IR-USB cable
connected to the multimeter — the Agilent
logo should be facing up.
❏
Verify the baud rate, data bit, and parity
settings in the multimeter's setup mode.
(Default values are 9600, 8, and none.)
❏
Verify that the driver for the IR-USB interface
is installed.
U1270 Series Service Guide