Spectra Logic Spectra 12K User manual

SDOC2002-16RevisionA
CounterweightReplacementGuide
•Spectra
®12KLibrary
•Spectra
®20KLibrary
•Spectra
®64KLibrary

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2
Notices
Spectra Logic provides the unit “as is” without warranty of any kind, either expressed or implied,
including but not limited to the implied warranties of merchantability or fitness for a particular
purpose. In no event shall Spectra Logic be liable for any loss of profits, loss of business, loss of
use or data, interruption of business, or for indirect, special, incidental, or consequential damages
of any kind, even if Spectra Logic has been advised of the possibility of such damages arising
from any defect or error.
Information furnished in this manual is believed to be accurate and reliable. However, no responsibility
is assumed by Spectra Logic for its use. Due to continuing research and development, Spectra Logic may
revise this publication from time to time without notice, and reserves the right to change any product
specification at any time without notice.
Counterweight Replacement Guide: Spectra 12K Library, Spectra 20K Library, Spectra 64K Library
Copyright © 2002 Spectra Logic Corporation. All rights reserved.
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Fax
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WebSite http://www.spectralogic.com

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Contents
Introduction................................................................................................4
Prepare the Library and Host System ........................................................6
Remove the Robotic Rack Assembly..........................................................7
Secure the Transport Tray........................................................................12
Remove the Counterweight......................................................................13
Replace the Counterweight ......................................................................17
Replace the Robotic Rack Assembly........................................................20

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Introduction
AboutthisManual
This manual describes the procedure for replacing the counterweights in Spectra 12K,
20K, or 64K libraries.
Figure1 Thecounterweight.

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EstimatedTimeRequired
This procedure should take approximately one hour.
MaterialsandToolsRequired
You will need a counterweight kit from Spectra Logic or from an authorized reseller:
You will also need:
• A #1 Phillips screwdriver
• A #2 Phillips screwdriver that torques to 11.5 lbs/inch
• A 5/32-inch Allen wrench
• The library door key

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PreparetheLibraryandHostSystem
Shut down the library while keeping the host interface connected to the host system.
1. Disable any backup software that might try to access the library.
Warning: Electric shock inside the library can cause injury or death.
Disconnect AC power before opening the library door.
2. Open the rear door (on 64K libraries only) to the library and switch off the power
button located at the lower left of the library.
3. If necessary, move the library to a location where you have full access to the front
of the library.
Caution: The library is heavy. Get help when moving the library.
• Spectra 12K and 20K libraries weigh approximately 275 lbs
(125 kg).
• The Spectra 64K library weighs approximately 880 lbs
(399 kg).
4. Use the library door key to unlock the front door of the library. You can now open
the door.

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RemovetheRoboticRackAssembly
1. With the door opened, look at the bottom of the library where the drives are
located.
If there is a hinge connecting the left side of the drive slots to the back of the
library (Figure 2), go to Step 2.
If your library does not have a hinge (Figure 3), go to Step 4.
Figure2 Hingelocatedbeneaththedrives. Figure3 Nohinge.

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2. Remove the drives from the drive bay, so that you have access to the screws that
are attached to the robotic rack.
3. Using the appropriate screwdriver, loosen the screws just enough to move the gate
out of the way from the robotic rack assembly (Figure 4).
• The Spectra 12K and 20K library has three screws in the door.
• The Spectra 64K library has five screws in the door.
4. Unplug the 25-wire black connector at the bottom front of the robotic rack
assembly (Figure 5 and Figure 6).
Figure4 Loosenthescrewsfromthedriveslotdoor.
Figure5 Unplugthe25-wireblackconnectoratthe
bottomfrontoftheSpectra12Kand20Klibrary. Figure6 Unplugthe25-wireblackconnectoratthe bottomfrontoftheSpectra64Klibrary.

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5. Using the #2 Phillips screwdriver, attach the screws that hold the robotic rack
assembly to the chassis: first the top, then the bottom (Figure 7).
Note: Some Spectra 12K library models have only four screws attaching
the robotic rack to the chassis.
Figure7 Thescrewsthatholdtheroboticrackassemblyto
thechassis(Spectra12Klibraryshown).

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6. From the front of the library, carefully slide the robotic rack assembly out of the
library (Figure 8).
Figure8 Slidetheroboticrackassemblyout(Spectra12K
libraryshown).

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7. From the side of the robotic rack assembly, carefully remove the robotic rack
assembly from the library (Figure 9).
8. Set the rack safely on a table or on the ground, and secure it to a fixed object.
Note: You will be working near the bottom of the rack, so placing it on a
table is preferred.
Caution: Secure the rack. The rack and picker may be damaged if the
rack falls.
Warning: Secure the rack. The rack may cause injury if it falls on a person.
Figure9 Lifttheroboticrackassemblyoutof
thelibrary(Spectra64Klibraryshown).

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SecuretheTransportTray
1. Locate the alignment blocks that are stored inside the library cabinet below the
tape drive slots.
2. Insert the alignment blocks:
• In Spectra 12K and 20K libraries, lift the transport tray to above the middle
point on the robotic rack and insert the alignment blocks in the rack. The tabs
on the alignment blocks fit into parallel slots on the robotic rack.
• In the Spectra 64K library, lift the transport tray almost to the top of the
robotic rack and insert the alignment blocks in the rack. The tabs on the
alignment blocks fit into parallel slots on the robotic rack.
3. Lower the transport tray so that it rests on the alignment blocks.
Figure10 Insertthealignmentblocks.

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RemovetheCounterweight
Note: If you are replacing the rear counterweight, you need to remove
the two screws attaching a cover plate to the counterweight before
you can remove the counterweight.
1. Remove the eight screws attaching the gear belt to the counter weight (Figure 11).
Caution: Do not let the counter weight fall. Make sure you have a hold of
the counter weight once it is disconnected from the belt.
Make sure the transport tray is secure. Do not let the transport
tray fall once the counterweight is disconnected.
Figure11 Removetheeightscrewsholding
thebelttothecounterweight.

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2. Locate the counterweight and its bottom right wheel as you face the rack
(Figure 12).
3. Use the 5/32-inch Allen wrench to loosen the bolt attaching the bottom right wheel
to the rack (Figure 13).
The bolt is located directly behind the wheel on the inside of the rack. Do not
remove the wheel entirely.
Figure12 Bottomrightwheellocation.
Figure13 Loosenthebottomrightwheel.
Counterweight
Bottomright
wheel

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4. Locate the left wheel as you face the rack (Figure 14).
5. Remove the left wheel with the 5/32-inch Allen wrench (Figure 15). The bolt is
located directly behind the wheel on the inside of the rack.
Figure14 Leftwheellocation.
Figure15 Removetheleftwheel.
Leftwheel

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6. Remove the counterweight by tilting the left side out first (Figure 16).
Figure16 Removethecounterweight.

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ReplacetheCounterweight
1. Remove the new counterweight from its packaging.
2. Remove the left wheel of the counterweight and loosen the bottom right wheel
before you place the new counterweight in the rack.
3. Place the new counterweight in the rack, right side first.
4. Use the 5/32-inch Allen wrench and attach the left wheel to the rack to 11.5 lbs/in
torque (Figure 17). Be sure to use the bolt that shipped with the new
counterweight.
Figure17 Replacetheleftwheel.

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5. Adjust the counterweight so that it is aligned squarely with the rack. The bottom
right wheel is the adjustment wheel. Use a screwdriver to push the wheel out until
it looks aligned (Figure 18).
6. Once the counterweight is adjusted, tighten the bottom right screw using the
5/32-inch Allen wrench, and torque to 11.5 lbs/in.
7. Move the counterweight up and down the rack. If it does not move smoothly, or it
catches on the rack, then adjust the bottom right wheel until it is properly aligned.
Figure18 Adjustthebottomrightwheel.

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8. Once the counterweight is aligned properly, attach the eight screws attaching the
gear belt to the counterweight (Figure 19).
9. Remove the alignment blocks holding the transport tray in place (or remove the
screwdriver holding the transport tray).
10. Make sure that the counterweight and transport tray move smoothly up and down.
Note: If you replaced the rear counterweight, replace the counterweight
cover now.
If you need to replace the other counterweight, go back to Remove
the Counterweight on page 13 and repeat this process.
Figure19 Attachtheeightscrewsholding
thebelttothecounterweight.

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ReplacetheRoboticRackAssembly
1. Carefully place the robotic rack assembly into the library (Figure 20).
2. Carefully slide the robotic rack assembly all the way into the library (Figure 21).
Figure20 Lifttheroboticrackassemblyinto
thelibrary.
Figure21 Slidetheroboticrackassemblyalltheway
intothelibrary.