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EK-SBB55-IG-B01

March 1994

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Document:	StorageWorks Solutions 5 1/2-inch SBB Half-Height Install Gde
Order Number:	EK-SBB55-IG
Revision:	B01
Pages:	17
Original Filename:

OCR Text

StorageWorks Solutions
5¼-Inch SBB Half-Height Device
Installation Guide
Order Number: EK–SBB55–IG. B01
This publication describes the 5¼-Inch StorageWorks building block
components (such as covers, connectors, and cables) and installation
procedures.

March 1994
While Digital believes the information included in this publication is correct as of the date of
publication, it is subject to change without notice.
Digital Equipment Corporation makes no representations that the interconnection of its products
in the manner described in this document will not infringe existing or future patent rights, nor
do the descriptions contained in this document imply the granting of licenses to make, use, or sell
equipment or software in accordance with the description.
© Digital Equipment Corporation 1993, 1994.
All Rights Reserved.
Printed in USA
StorageWorks and the Digital logo are trademarks of Digital Equipment Corporation.

This document was prepared using VAX DOCUMENT Version 2.1.

Installing a Second 5¼-Inch Half-Height Device
This document presents the procedures for installing a second 5¼-inch halfheight (HH) device when a second device is required. StorageWorks building
blocks (SBBs) support the following 5¼-inch form factor devices: full-height
(FH) hard drives and tape drives, and HH CD–ROMs and tape drives. When
two HH devices are installed in one 5¼-inch SBB, the second device is the upper
device. Refer to the StorageWorks Family User’s Guide or the StorageWorks
Family Configuration Guide for information on configuring and installing of
5¼-inch FH devices.
Use the following procedure to install a second 5¼-inch HH device in an SBB:
CAUTION
Do not attempt the following procedure unless you have taken proper
precautions against electrostatic discharge (ESD). When you remove the
cover from any enclosure or device, wear an ESD grounding wrist strap to
avoid damaging the equipment.

1. Place the contents of the second 5¼-inch half-height option kit (as shown in
Figure 1) and the second 5¼-inch HH device within easy reach.
Figure 1 Second 5¼-Inch Half-Height Option Kit Components

SCREW
(4-40 PAN)
INPUT/OUTPUT
MODULE

SCSI ID
FLEX CIRCUIT

SCREW
(M3 FLATHEAD)

BEZEL
EXTRACTION
TOOL
MOUNTING BRACKET
CXO-4214A-MC

2. Using Table 1, check to make sure you have all of the option kit
components.
Table 1 Second 5¼-Inch Half-Height Option Kit Contents

Component

Part Number

Quantity

Bezel extraction tool

74–47025–01

Input/Output module

54–22219–01

Label, generic

36–39997–01

Mounting bracket

74–45316–01

Screw, machine, 4–40, pan head

90–06011–01

Screw, machine, M3, 5 mm, flat head

90–40122–08

Screw, machine, M3, 5 mm, pan head

90–10556–02

SCSI ID Flex circuit

17–03608–06/10

3. Place the SBB (see Figure 2) on the work surface in front of you and remove
the bezel as follows:
a. Push down on the four upper mounting tabs with the bezel extraction tool
while pulling the top of the bezel away from the SBB.
b. When the upper mounting tabs are free, pull the bezel forward slightly to
release the bottom mounting tabs, and remove the bezel.
Figure 2 5¼-Inch SBB
TOP
COVER

BEZEL
EXTRACTION
TOOL
UPPER
MOUNTING
TABS

SIDE
MOUNTING
TABS
BEZEL

BOTTOM
COVER

CXO-3894A-MC

4. Remove the top cover as follows:
CAUTION
To prevent damage to the SBB or the device, use a screwdriver and
minimal pressure to release each mounting tab.
a. On the left side, push in each of the four top cover side mounting tabs
until they are released from the bottom cover, as shown in Figure 2.
b. On the right side, push in each of the four top cover side mounting tabs
until this side is released, and remove the top cover.
5. Attach the top cover to the mounting bracket as follows:
a. Position the top cover over the mounting bracket and align the cover
mounting holes with the screw holes in the top of the mounting bracket,
as shown in Figure 3.
b. Insert and tighten the four 4–40 pan head screws (recommended torque is
seven inch–pounds).
Figure 3 Top Cover to the Mounting Bracket
TOP
COVER
SCREW 4-40 PAN
(4 PLACES)

MOUNTING
BRACKET

CXO-4188A-MC

6. Attach the device to the mounting bracket as follows (see Figure 4):
a. Position the device as shown in step

CAUTION
Use care when sliding the device into the mounting bracket. Excessive
force may damage the device.

b. Slide the device into the mounting bracket as shown in step

Note
Refer to device documentation to determine whether 4–40, 6–32, or M3
screws are used to mount the device.

Select the appropriate pan head screws for mounting the device (that is,
4–40, 6–32, or M3).

d. Align the four device mounting holes with slots in the mounting bracket.
Note
If you are in doubt about which are the correct screws, insert and fingertighten one of the mounting screws.
e.

Insert four flat head screws through the mounting bracket slots and into
the device. Do not tighten the machine screws.

Figure 4 Device to the Mounting Bracket
1
TOP COVER

MOUNTING
HOLES
(4 PLACES)
MOUNTING
BRACKET

DEVICE

MOUNTED
DEVICE

FLATHEAD
SCREW
(4 PLACES)
SLOTS
(4 PLACES)
CXO-4190A-MC

7. Align the two devices in the SBB as follows:
a. Slide the second device into the bottom cover guide slots, as shown in
Figure 5.
b. Align the front of the second device with the front of the first device.
Note
Firmly hold the second device to prevent it from moving in the mounting
bracket and thereby losing alignment.

Lift the device from the bottom cover and tighten the four flat head screws
(recommended torque is seven inch–pounds). Refer to Figure 4.

d. Slide the second device into the bottom cover guide slots to make sure the
alignment has not changed.
e.

If the alignment has changed, repeat the alignment procedure starting
with step a.

When the alignment is correct, remove the second device from the bottom
cover and proceed to the next step.

Figure 5 Aligning Two Devices in the SBB

SECOND
HALF-HEIGHT
DEVICE

GUIDE
SLOTS
(4 PLACES)

BOTTOM
COVER
CXO-4189A-MC

8. Attach the small computer system interface (SCSI) ID flex circuit to the
Input/Output (I/O) module zero insertion force (ZIF) connector as follows:
a. Locate and unlock (pull) the edge of the ZIF connector (see Figure 6).
CAUTION
The SCSI ID connector must fit straight into the ZIF connector or a
possible short could occur.

b. Insert the flat end of the SCSI ID flex circuit into the ZIF connector.
Make sure that the contacts (shiny side) are face down.
c.

Lock (push) the edge of the ZIF connector to secure the SCSI ID flex
circuit.

Figure 6 SCSI ID Flex Circuit to the ZIF Connector

CONTACT SIDE
(UNDERNEATH)

LOCK

UNLOCK

SCSI ID
FLEX
CIRCUIT

ZIF CONNECTOR

CXO-3876A-MC

9. If the device you are installing is a tape drive, fold the cable as shown in
Figure 7.
Note
Make sure the red stripe and the key are properly positioned.

Figure 7 Tape Drive I/O Cable

2
RED STRIPE

RED STRIPE

KEY
4

KEY

RED STRIPE

CXO-3854A-MC

10. If the device you are installing is a CD–ROM, fold the cable as shown in
Figure 8.
Note
Make sure the red stripe and the key are properly positioned.

Figure 8 CD–ROM I/O Cable

2
RED STRIPE

RED STRIPE

KEY
4

RED STRIPE
KEY
KEY

RED STRIPE

CXO-3890A-MC

11. Attach the I/O module connectors to the second 5¼-inch HH device. See
Figure 9.
a. Keep the ribbon cable folded while you plug in the connectors.
b. Stand the device on end with the I/O module connector facing up.
c.

Connect the 50-pin interface connector.
•

If connecting to a RRD42 device, see Figure 10.

•

If connecting to a RRD43 device, see Figure 11.

•

If connecting to a RRD44 device, see Figure 12.

Figure 9 Input/Output Module Connectors
SBB/BACKPLANE

POWER

RED STRIPE
KEY

SCSI
ID
ZIF
SCSI ID FLEX
CIRCUIT
RIBBON
CABLE

1
2
3
4
5
6

O
N

ADDRESS
SWITCHES

INTERFACE

BACK
FRONT
CXO-3853A-MC

Figure 10 RRD42 Device Interface Connection
SCSI ID
CONNECTOR

INTERFACE
CONNECTOR

POWER
PIN 1

012
IO SELECT

KEYWAY
CXO-4207A-MC

Figure 11 RRD43 Device Interface Connection
SCSI ID
CONNECTOR

INTERFACE
CONNECTOR

POWER
PIN 1

KEYWAY

012

CXO-4209A-MC

Figure 12 RRD44 Device Interface Connection
SCSI ID
CONNECTOR
012

FLEX

INTERFACE
CONNECTOR
POWER
PIN 1

KEYWAY

CXO-4210A-MC

d. Plug in the 4-pin power connector.

•

If connecting to a RRD42 device, refer to Figure 10.

•

If connecting to a RRD43 device, refer to Figure 11.

•

If connecting to a RRD44 device, refer to Figure 12.

Plug in the SCSI ID connector.
Note

Prior to installing the SCSI ID flex circuit, remove all two-pin jumpers
from the SCSI ID connector on the rear of the device. Refer to the device
documentation.

12. Insert the mounted second device into the bottom cover guide slots (refer to
Figure 5).
Note
The second device connector is the left rear modular carrier connector as
shown in Figure 13.

13. Position the lower end of the backplane connector into the receptacle in the
bottom cover. The top cover has a similar receptacle for the upper end of the
backplane connector.
14. Align the top and bottom covers so that the backplane connectors move freely
(up, down, and sideways).
15. Push the top cover into the bottom cover until the eight tabs on the sides of
the covers engage and snap into place.
Figure 13 Mounted Second Device

SECOND
HALF-HEIGHT
DEVICE

FIRST
HALF-HEIGHT
DEVICE

SECOND DEVICE
BACKPLANE
CONNECTOR

RECEPTACLE

FIRST DEVICE
BACKPLANE
CONNECTOR
CXO-4192A-MC

16. Attach the bezel as follows:
a. Stand the SBB on the I/O module end as shown in Figure 14.
b. Pick up the bezel and remove the blank bezel filler panel.
c.

Fit the top bezel tabs into the SBB. Make sure the tabs are aligned and
the three evenly spaced top bezel tabs are on the left side. Gently push
until the four top bezel and four bottom bezel tabs are secure.

Figure 14 Bezel Attachment

BEZEL

TOP BEZEL
TABS

BLANK BEZEL
FILLER PANEL

I/O MODULE
(ON BOTTOM)
CXO-4211A-MC