Agilent Technologies 8453 Operator's Manual page 242

Figure 51
5 To replace the SPM board, see "Replacing the SPM Board" on page 121.
6 To replace the fan, see "Replacing the Fan Assembly" on page 126.
7 Replace the plastic and sheet metal rear cover. Push the plastic rear cover
8 Reconnect line power and turn on the instrument. Check that the
Maintenance and Repair
Exchanging the Main Power Supply
Replacing the Middle Rear Foam Block
down so that it locates on both sides, see "Removing and Replacing Covers"
on page 109.
spectrophotometer passes its self-test, this means that the green light on the
front panel comes on and that you can do a blank measurement from your
software.
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