Turn-On Checkout
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3
Turn-On Checkout
Note This chapter provides a preliminary introduction to the power supply front panel. See Chapter 5 for more
details.
Introduction
Successful tests in this chapter provide a high degree of confidence that the power supply is operating properly. For
complete performance and/or verification tests, refer to the service manual (see Table 1-4 in Chapter 1).
Do not connect the power cord to the power source until told to do so.
Preliminary Checkout
Series 654xA and 655xA Power Supplies
If required, see Figure 2-1 in Chapter 2 and Figure 4-1 in Chapter 4 for parts locations.
I. Make certain that the front panel switch is off.
II. Examine the Line And Fuse Rating label (3, Figure 2-1).
A. Verify that the line voltage rating agrees with your power source. If it does not, see Appendix B.
B. Use a screwdriver to remove the line fuse from the fuseholder (1, Figure 2-1). Verify that the fuse is as specified on
the label. Replace the fuse.
III. Check that the SENSE switch (4, Figure 4-1) is set to Local.
IV. Make sure that there is no load connected to the output (+) and (-) terminals (2, Figure 4-1).
Series 657xA Power Supplies
I. Examine the Line Voltage label (4, Figure 2-2) and verify that the line voltage rating agrees with your power source. If
it does not, see Appendix B.
II. Remove the output safety cover (1, Figure 4-2).
III. Examine the output sense terminals (4 and 5, Figure 4-2). They should be wired for local sensing as follows:
A. The +LS sense terminal wired to the +S terminal of the analog connector (2, Figure 4-2) .
B. The -LS sense terminal wired to the -S terminal of the analog connector.
C. If the power supply is not wired for local sensing, make the above connections, using small-capacity wire (#22 is
sufficient).
IV. Make certain there is no load connected to the bus bars.
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