Spectra Logic Spectra 20K User manual

P.N. 90920000 Revision A
Spectra®20K Library
Transport Tray Assembly
Replacement Guide

Spectra® 20K Library Transport Tray Assembly Replacement Guide
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Notices
Except for Spectra Logic Corporation’s express repair/replacement warranty, 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.
Spectra 20K Library Transport Tray Assembly Replacement Guide
Copyright © 2003 Spectra Logic Corporation. All rights reserved.
Spectra Logic Contact Information
Corporate Headquarters European Office
Address
Phone
Fax
Spectra Logic Corporation
1700 N 55th Street
Boulder CO 80301
USA
[phone] or [phone]
[phone]
Address
Phone
Fax
Spectra Logic Europe Limited
Magdalen Centre
Robert Robinson Avenue
Oxford Science Park
Oxford
UK OX44 7 RW
[phone]
[phone]
Web Site http://www.SpectraLogic.com

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Contents
Introduction ................................................................................................4
Prepare the Library and Host System ........................................................ 6
Remove the Robotic Rack Assembly .......................................................... 7
Remove the Transport Tray Assembly ..................................................... 12
Unpack the Replacement Transport Tray Assembly................................ 17
Install the Replacement Transport Tray Assembly .................................. 21
Replace the Robotic Rack Assembly ........................................................ 26
Prepare the Library for Tests.................................................................... 29
Tests .......................................................................................................... 30
Finish......................................................................................................... 33

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Introduction
About this Manual
This manual describes the procedure for replacing the transport tray assembly in a
Spectra 20K library and how to configure and calibrate the assembly after it has been
installed.
About the Transport Tray Assembly
The transport tray assembly in Spectra 20K libraries moves within the robotic rack
assembly. Its job is to transport tape cartridges between the tape drives, tape slots, and
the entry/exit (E/E) port. The main component of the transport tray assembly is the
robotic picker, which handles the tape cartridges. The robotic picker has arms that
grab and hold one tape cartridge at a time while it travels along the transport tray. A
bar code reader located on the robotic picker reads the bar code label on each tape
cartridge to ensure accuracy.
Estimated Time Required
This procedure should take about one and one-half hours.
Figure 1 The transport tray assembly.
Robotic picker
Transport tray
Cable mast

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Materials and Tools Required
You will need a transport tray assembly from Spectra Logic or an authorized reseller:
• Transport Tray Assembly, P.N. 90929001
You will also need the following tools:
• A #1 Phillips screwdriver
• A #2 Phillips screwdriver
• A flat head screwdriver
• A wire cutter
• Snap ring pliers
• The library door key

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Prepare the Library and Host System
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. Turn off the power. The power switch is located at the rear of the library on the
lower left.
3. If necessary, move the library to a location where you have full access to the front
of the library.
Caution: The library weighs approximately 240 pounds (108.86 kg). Get
help when moving the library.
4. Use the library key to unlock and open the front door of the library.
5. Remove the drives from the drive bay and set them aside in a safe place.
Note: It is not necessary to remove the media.
6. Proceed to Remove the Robotic Rack Assembly on page 7.

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Remove the Robotic Rack Assembly
1. Lower the transport tray to bottom of the robotic rack by gently raising the counter
weight (Figure 2).
Figure 2 The robotic rack counter weight is raised.

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2. Rotate the picker so that the bar code scanner faces the rear of the library.
The location of the barcode scanner is shown in Figure 3.
3. Slide the picker along the transport tray to the front of the library (Figure 4).
Figure 3 The location of the bar code scanner.
Figure 4 The picker is slid to the front of the library.
Location of the
bar code scanner

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4. Unplug the 25-wire black connector at the bottom front of the robotic rack
assembly (Figure 5).
5. Using the flat head screwdriver, remove the three cone head screws that hold the
robotic rack to the drive slot assembly (Figure 6).
Figure 5 The 25-wire black connector.
Figure 6 The cone head screws circled (the third cone head
screw is out of view.)

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6. Using the #2 Phillips screwdriver, remove the screws that hold the robotic rack
assembly to the chassis: first the top, then the bottom (Figure 7).
7. From the front of the library, carefully slide the robotic rack assembly outward
about six inches (15.24 cm) (Figure 8).
Figure 7 The robotic rack screws.
Figure 8 The robotic rack assembly is moved outward.

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8. From the side of the robotic rack assembly, carefully remove the robotic rack
assembly from the library (Figure 9).
9. Set the robotic rack assembly on a stable work surface.
10. Proceed to Remove the Transport Tray Assembly on page 12.
Figure 9 The robotic rack assembly being lifted out of the
library.

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Remove the Transport Tray Assembly
1. Locate the alignment blocks that are stored inside the library cabinet, below the
tape drive slots.
2. Lift the transport tray to above the middle point on the robotic rack.
3. Insert the alignment blocks (Figure 10). The tabs on the alignment blocks fit into
parallel slots on the robotic rack.
4. Lower the transport tray so that it rests on the alignment blocks.
Figure 10 The transport tray alignment blocks.

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5. Using the #2 Phillips screwdriver, remove the retaining screw from the ribbon
support bracket (Figure 11).
6. Remove the ribbon bracket (Figure 12).
• Slide the bracket away from the ribbon.
• Pull the bracket down.
• Allow it to disengage from the transport tray.
Figure 11 The ribbon support bracket retaining screw.
Figure 12 The ribbon support bracket.
1
2

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7. Disconnect the power and control ribbon (Figure 13).
8. Gently slide the robotic picker to the center of the transport tray in order to avoid
accidental contact with tools and belt brackets.
9. Using the #2 Phillips screwdriver, remove the gear cover on the back of the
transport tray (Figure 14).
Figure 13 The transport tray power and control ribbon.
Figure 14 The screws in the transport tray gear cover.

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10. Using the #1 Phillips screwdriver, unscrew the spring-loaded captive screws that
hold the transport tray to the counterweight assemblies. There are three screws
each on the front and back of the transport tray (Figure 15).
Warning: Be sure to support the counterweights as they are detached from
the transport tray in order to prevent the counterweights from
falling and injuring your hands or fingers.
11. Using the snap ring pliers, remove the snap rings from the outer-most two gears on
both the front and back of the transport tray (Figure 16).
Figure 15 The transport tray counterweight assembly.
Figure 16 The transport tray gear snap rings.

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12. Remove the outer-most two gears from both the front and back of the transport
tray. These gears are the ones that engage the cogs on the robotic rack (Figure 17).
13. Carefully lift the transport tray off the alignment blocks and take it out of the rack
(Figure 18).
14. Set the transport tray assembly aside in a safe location.
15. Proceed to Unpack the Replacement Transport Tray Assembly on page 17.
Figure 17 The transport tray gears.
Figure 18 The transport tray is removed.

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Unpack the Replacement Transport Tray Assembly
1. Open the cardboard box and remove the foam packing blocks (Figure 19).
Caution: Do not discard any of the transport tray assembly’s packaging
material. Keep all packaging material on hand for returning the
old transport tray assembly to Spectra Logic. Failure to ship the
old transport tray assembly to Spectra Logic in its proper
packaging may result in damage to the product and may void
the warranty.
Figure 19 The shipping box with arrows pointing to the foam packing blocks.

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2. Carefully remove the transport tray assembly from the shipping box and set the
shipping box aside (Figure 20).
3. Carefully remove the tray assembly from the anti-static bag.
4. Using a wire cutter, carefully cut the plastic tie securing the robotic picker to the
end of the transport tray (Figure 21). Take care not to damage the robotic picker
while removing the tie.
Figure 20 The transport tray shipping box.
Figure 21 The robotic picker tie.

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5. Remove the small piece of foam from the robotic picker by pulling it gently
outward (Figure 22).
6. Gently rotate the robotic picker mechanism clockwise until positioned as shown in
Figure 23.
Caution: Failure to rotate the robotic picker before removing the large
piece of foam could cause the picker cables to disconnect,
which will cause the picker to fail. Use care at all times when
handling the robotic picker.
Figure 22 The robotic picker’s small piece of foam.
Figure 23 Rotate the robotic picker clockwise.

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7. After rotating the picker, remove the large piece of foam from the picker
mechanism by pulling it gently outward (Figure 24).
8. Proceed to Install the Replacement Transport Tray Assembly on page 21.
Figure 24 The robotic picker’s large piece of foam.