Each replacement procedure is rated on how difficult it is to correctly perform.
[1] Easiest
[3] Moderate
[5] Most Difficult
Removing and Replacing
the Motherboard
Level of Difficulty: [4] Moderate to Difficult
Removing the motherboard requires a series of disassembly steps to access the
board. Review the entire removal process before beginning this procedure.
Removing the Motherboard
CAUTION: This library contains very sensitive electronic components.
It is important to follow the proper procedures for preventing electrostatic
discharge (ESD). Use wrist-grounding straps and antistatic mats when removing
and replacing the major assemblies.
Failure to follow proper procedures could damage the circuitry.
Use the following steps to remove the motherboard:
Power off the library.
Note the location of all cables and cords in order to replace at the end
of this procedure.
Disconnect all external cables from the back of the library.
Remove the following:
Power supply
Drive modules
Cards
Vacant card slot and drive covers
Disconnect all cables on the back of the motherboard (see Figure
1 "Motherboard Cable Connections").
Figure 1. Motherboard Cable Connections
1
Display cable connector
2
Fan cable
3
Umbilical cable
4
Door lock power cable
5
Guide pins
Remove the ten #4 - 40 x .625 T-10 screws from the motherboard (see Figure
2 "Screw Locations on the Motherboard"). Use a 8 inch x 1/4
inch magnetic extension to remove these screws.
Figure 2. Screw Locations on the Motherboard
1
Four 4 - 40 x .625 T-10 screws in the card bay area
2
Three 4 - 40 x .625 T-10 screws in the drive bay area
3
Three 4 - 40 x .625 T-10 screws in the power supply bay
Loosen the thumbscrews on the sheet-metal cover nearest the left drive
bay and rotate the cover clockwise (see Figure 3 "Rotating
the Sheet-Metal Cover").
Figure 3. Rotating the Sheet-Metal Cover
WARNING: Failure to extend the anti-tip foot of the rack could result
in damage to the library and/or personal injury.
If the library is rackmounted, use the following steps to slide it forward
in the rack.
Lower the leveler feet, and fully extend the anti-tip foot at the front
of the rack.
Pull out the front doors and unscrew the thumbscrews that secure the
library to the rack.
Push the library out until it hits the stop bracket (approximately 2/3
out of the rack). If the library is rackmounted, remove the right side
panel of the rack to access the motherboard.
Remove the four T-10 screws from the library's right-side panel, shown in
Figure 4 "Removing Two Side Panels" (right,
viewed from the front of the library), and slide the panels off the library.
Figure 4. Removing Two Side Panels
Open the front door on the right side for more room. Disconnect the magazine
harness cable from the front of the motherboard by pushing the ejection
tabs on the connector outward (see Figure 5 "Magazine
Lock Harness Cable Connection").
Figure 5. Magazine Lock Harness Cable Connection
Carefully remove the motherboard from the side of the library (see Figure
6 "Removing the Motherboard").
Figure 6. Removing the Motherboard
Replacing the Motherboard
Insert the new motherboard into the side of the library. Align it by using
the guide pins near the drive bays (see Figure 1 "Motherboard
Cable Connections").
Replace the ten screws that secure the motherboard to the library chassis
(see Figure 2 "Screw Locations on the Motherboard").
Connect all cables to the motherboard (see Figure 1
"Motherboard Cable Connections" and Figure 5
"Magazine Lock Harness Cable Connections").
Replace the library's side panels, and tighten the screws (see Figure
4 "Removing Two Side Panels").
Push the library fully into the rack (if needed), and secure it to the rack.
Rotate the sheet-metal cover back into place, and tighten the thumbscrew.
Replace the library cards, drive, vacant slot covers, and power supply.
Replace all external cables and cords.
Connect the power cord into a grounded power outlet and power on the library.
