3301A MAINFRAME OPERATION MANUAL 3
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Chapter 2 Installation
2-1.Inspection
The 3301A mainframe was carefully inspected before shipment. If instrument damage has occurred
during transport, please inform Prodigit's sales and service office or representative.
Your 3301A mainframe was shipped with a power cord for the type of outlet used at your
location. If the appropriated cord was not included, please contact your nearest Prodigit
sales office to obtain the correct cord. Refer to " check line voltage " to check the line
voltage selection and fuse type.
2-2.Check line voltage
The 3301A mainframe and 3320 series Electronic load can operation with 100, 115, 200, 230Vac
input as indicated on the label on the rear panel.
Make sure that the factory check mark correspond to your nominal line voltage. Skip this
procedure if the label is corrected marked.
1.With the 3301A mainframe power OFF, disconnect the power cord, and remove two bottom cover
screws.
2.Turn the 3301A mainframe up side down, remove the bottom cover.
3.Refer the drawing on the PC board in Fig 2-1, set the switches to the proper voltage as
describe in the following:
a.115Vac：Set SW1 to left side (SW1
Å
).
b.230Vac：Set SW1 to right side (SW1
Æ
).
POWER SUPPLY PCB
SW1
115V
230V
Figure 2-1 Set of the power switch
4.Replace the cover and mark the correct voltage on the rear panel of 3301A mainframe.
5.Check the rating of the line fuse and replace it with the correct fuse if necessary.
6.The line fuse is located below the AC line receptacle see Fig 2-2. With the power cord
removed, use a small screwdriver to extract the fuse holder from under the AC socket.
Replace the fuse with the appropriate type as indicated in table 1-1. These fuses are
normal-blow fuses.
Summary of Contents for 3301A
Page 1: ...3301A E S N 90033013 rev A...
