Tektronix TD140, Руководство по техническому обслуживанию аппаратной части

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TD140 Hardware Maintenance Guide 7.13.2 32
4
TD140 Maintenance Guidelines Rev. 001-140228
W
ARNINGS

Before working on components, ensure that the power is removed from the
power connection cables. When the system is powered on, do NOT touch the
power terminals.

This TD140 is intended to be grounded. Ensure that the platform ground
terminals are connected to protective earth (PE) ground of the building.

Follow ESD precautions and make sure you are adequately grounded before
handling the module or the RTM.
R
EPLACING A
PPM
Refer to the following sections for more information:

Remove the PPM

Install the PPM
Remove the PPM
Perform the following steps:
1. Disconnect all cables from the RTM if it is installed. Power to the RTM will be
lost once the PPM is removed.
2. Loosen the ejector handle thumbscrews on the PPM. Release the locking
ejector latch that engages the hot-swap switch (
Figure 4.1
). This is the right
ejector latch if the PPM is oriented horizontally, or the lower ejector latch if it is
oriented vertically. Do not release the other latch at this time.
Figure 4.1 - PPM Locking Latch
Never force open a locking ejector latch. The locking mechanism must be disengaged
to release the latch or damage to the latch could occur. Refer to
Figure 4.1 .
3. The hot swap blue light flashes on the PPM front panel. When the hot swap light
turns solid blue, perform the next step.
4. Release the other PPM ejector latch (the non-hot swap latch).
Slide lock toward
handle, then pull
handle out
Lock
Locking latch
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