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PWRDST
YCLEAR
POWER
D1
D2
D1PWR
D2PWR
Rear View of TLS
D1CNTL
D2CNTL
PCBA
Mounting Screws (3)
Figure 7-34 Drive Bay PCBA (42xx model shown)
NOTE
In the next step, the nuts on the back of the PCBA mounting screws come loose when the
screws are removed.
Some model libraries have 3 PCBA mounting screws, while others have 5 or 7 PCBA mounting
screws.
6.
Hold the PCBA mounting nut on the back of a PCBA mounting screw with a 1/4-
inch nutdriver, then use a number 2 Phillips screwdriver to remove the PCBA
mounting screw (Figure 7-34). Remove the remaining PCBA mounting screws
the same way.
7.
Lift the Drive Bay PCBA out of the TLS.
7.15.2 Drive Bay PCBA Replacement
1.
Insert the Drive Bay PCBA into the TLS and align its mounting screw holes with
the PCBA mounting screw holes in the TLS’ frame (Figure 7-34).
2.
Install a PCBA mounting screw, then thread a PCBA mounting nut onto the
PCBA mounting screw. Reinstall the remaining PCBA mounting screws the
same way.
7-54
Field–Replaceable Units (FRUs)
501380 Rev. B