Technical data

2 Service and Maintenance
Troubleshooting
38 U8030A Series Service Guide
Troubleshooting
This section provides a brief check list of the common
failures. Before troubleshooting or repairing the power
supply, make sure that the failure is in the instrument
rather than any external connections. Also make sure that
the instrument is accurately calibrated.
The table below will assist you in identifying some basic
malfunctions.
WARNING
To avoid electrical shock, do not perform any service unless you are
qualified to do so.
Table 2 - 1 Operating checklist
Malfunction Identification
Unit is inoperative
❏ Verify that the AC power cord is connected
to the power supply.
❏ Verify that the front panel power switch is at
the ON position.
❏ Verify the power- line voltage setting.
❏ Verify that the power- line fuse is installed.
[1]
[1] See Table 2-3 on page 42 for more information on the power-line fuse part
number and description.