Tektronix SPG8000A, User Manual

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38 SPG8000A User Manual
installed in the instrument. There are dangerous high voltages inside the
module when the power cord is connected.
CAUTION : To prevent an unexpected shutdown of the instrument, be sure
to disconnect the correct power cord if you are replacing a faulty Power
Supply module. (See Figure 7.)
When viewed from the front of the instrument, Power Supply 1 is the left
Power Supply module and Power Supply 2 is the right Power Supply
module. This matches the orientation of the PWR1 and PWR2 indicators
on the front panel. The STATUS LED on the rear panel of each Power
Supply module will match the status shown by the front-panel PWR1 and
PWR 2 indicators.
1. Remove the power cable from the Power Supply module that you are
removing or replacing.
2. Pull out the handle located at the bottom of the supply. (See Figure 7.)
3. While pushing the retaining latch to the left, use the handle to pull the
Power Supply module out of the instrument.
4. Insert the replacement supply into the instrument until it latches into
place.
5. If necessary, push the handle of the supply into the storage position.
6. Connect the power cable to the Power Supply module you installed.
7. Check that the status of the Power Supply module you just installed is
bright or dim green.
8. If needed , change the preferred supply configuration. (See
To configure
the preferred (active) supply .)
Note : It is recommended that you configure the supply with the most
temperature weighted hours to be used as the primary preferred supply. This
allows for the newer supply to be preserved so it can provide the best possible
backup should the primary supply fail.