Power Button Assembly Removal/Replacement - HP Surestore Disk Array 12h - And FC60 Service Manual

Power Button Assembly Removal/Replacement

The power button assembly is located in the top cover and consists of the on/off button and
push rod. These components operate the electrical switch located on the mezzanine board.
If the button or rod is broken, replace the power button assembly. If the internal switch is
broken, replace the mezzanine board (described following this procedure). The disk
enclosure must be powered off to complete this procedure.
The backplane and mezzanine boards must be replaced by a trained service representative
only.
1. Power off the disk enclosure and slide it out of the rack about 10 inches. See
Enclosure SC10" on page
2. Remove the top cover. See
3. Pry the on/off button (A in
4. Slide the spring off the rod.
5. Pull the rod out from the back of the cover.
6. Slide the replacement push rod (B in
the back edge of the cover plate. Thread the rod through the slot as follows:
a. Rotate the rod so that the right-angle standoffs (D) on the wide end of the rod pass
through the L-shaped notch in the cover.
b. Guide the narrow end of the rod past additional slots at the front edge until the tip is
exposed.
7. Slide the metal spring on the tip of the rod.
8. Snap the on/off button (A) onto the tip of the rod so that the straight line on the face of
the button is at the top when the cover is on the chassis.
9. Replace the top cover and reconnect the disk enclosure. See
Enclosure SC10" on page
Internal Disk Enclosure Assemblies
312
304.
"Top Cover Removal/Replacement" on page
Figure 101) off the rod in the underside of the top cover.
Figure 101) — narrow end first — into the slot in
307.
"Disk
310.
"Installing the Disk