
3-3
In Case of Difficulty
If the Mainframe Does Not Operate
If the Mainframe Does Not Operate If the mainframe does not operate, check the following: 
1Is the line fuse good? 
2Does the line socket have power? 
3Is the unit plugged in to the proper ac power source? 
4Is the mainframe turned on? 
5Is the rear-panel line switch set to on? 
6Will the mainframe power up without the plug-in module installed? 
If the mainframe still does not power up, refer to the  optional 
Agilent 83480A, 54750A Service Guide or return the mainframe to a quali-
fied service department. Refer to the Agilent 83480A, 54750A User’s Guide 
for a complete listing of Agilent Sales and Service Offices.