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EK-SH43C-IG-A01

October 1993

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Document:	StorageWorks SH043-Series Cab Cable Dist Unit Inst Guide
Order Number:	EK-SH43C-IG
Revision:	A01
Pages:	8
Original Filename:

OCR Text

StorageWorks
SH043-Series Cabinet
Cable Distribution Unit
Installation Guide
Order Number: EK–SH43C–IG. A01
This document contains instructions for replacing StorageWorks SH043series cabinet cable distribution units (CDUs) and for installing the
cabinet’s dual power option.

Digital Equipment Corporation
Maynard, Massachusetts

October 1993
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
All Rights Reserved.
Printed in the United States of America.
NOTE: This equipment generates, uses, and may emit radio frequency energy. The equipment has
been type tested and found to comply with the limits for a Class A digital device pursuant to Part
15 of the FCC rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation.
Any changes or modifications made to this equipment may void the user’s authority to operate the
equipment.
Operation of this equipment in a residential area may cause interference in which case the user
at his own expense will be required to take whatever measures may be required to correct the
interference.
The equipment described in this manual is listed by the Underwriters Laboratories Incorporated
and bears the UL Listing mark. SH043-series cabinets are also certified by the Canadian Standards
Association and TÜV Product Service GmbH and bear both the CSA certification and TÜV GS
marks. The equipment also complies with the requirements for CE-mark Class A.
Das in diesem Manual beschriebene Gerät wurde von TÜV Produkt Service GmbH auf Sicherheit
geprüft and trägt das GS Zeichen. Bitte beachten Sie, daß Eingriffe in das Gerät, Reparaturen
oder der Einbau von Erweiterungen nur von Digital Personal erfolgen darf, da sonst die GS
Zulassung ungültig wird. Die Zulassung wird auch ungültig, wenn nicht von Digital qualifizierte
Speichererweiterungen eingebaut werden.
Das Gerät muß so aufgestellt werden, daß die Steckdose frei zugänglich ist.

StorageWorks and the DIGITAL logo are trademarks of Digital Equipment Corporation.

This document was prepared using VAX DOCUMENT Version 2.1.

1 Cable Distribution Unit Replacement Procedure
The following procedure describes how to install a replacement cable distribution
unit (CDU).
1. Check the contents of the field replaceable unit (FRU) kit against the
appropriate parts list shown in Table 1 to verify that all the parts are
present.
Table 1 Cable Distribution Unit FRU Kit Parts List
Kit option number
SH003–ZZ (230V, 50 Hz)
Digital Part Number

Description

Quantity

EK–SW43C–IG

CDU and dual power option installation guide

90–00063–39

Screw, 10–32 Phillips, 1/2"

90–07786–03

U-nut, 10–32

30–32959–05

Cable distribution unit, 120/230V, 60/50 Hz

17–00083–57

Power cable, NEMA 5–20 twist-lock plug

(Optional)

17–01255–01

Power cable, IEC 309 plug

36–38274–01

Label, caution and cable ID

2. If the CDU to be replaced is installed in a single power system, spin down all
disk drives and halt all tape drives in the cabinet.
(This step may not be necessary if the cabinet is configured with the dual
power option. The system can be left turned on while the defective CDU is
replaced.)
WARNING
Hazardous voltage is present within the cabinet. Use extreme caution
when working around components to which power is applied.

3. Open the rear cabinet door to expose the CDU to be replaced.
4. Switch the circuit breaker on the front panel of the CDU to the
position.

(OFF)

5. Disconnect the defective CDU’s primary power cable from the power source.
Note
The primary power cable need not be replaced along with the CDU if it is
in servicable condition. The existing primary power cable may be left in
place and used with the replacement CDU. If it is decided to replace the
primary power cable, the new cable should be installed and routed in the
same manner as the original cable.

6. Disconnect the defective CDU’s primary power cable from the receptacle on
the CDU’s front panel.

7. While supporting the defective CDU, remove and retain the screws holding it
to the cabinet chassis rails.
WARNING
Cabinet rail edges may be sharp and can slice or abrade skin and cable
insulation.

8. Gently pull the CDU from the cabinet while carefully guiding the cords
attached to its rear panel through the cabinet opening.
9. Support the CDU while disconnecting the ac power cords from its rear panel.
The cords need not be labeled for reconnection in the same place.
10. Remove the CDU completely from the cabinet.
11. Position the replacement CDU near the previously disconnected power cords.
12. While supporting the CDU, connect the power cords to the connectors on the
CDU’s rear panel. The cords may be connected in any order.
13. Slide the CDU into its mounting position while guiding the power cords into
the cabinet.
14. Mount the CDU using the screws retained in step 7.
15. Connect the CDU’s primary power cable to the receptacle on the CDU’s front
panel.
16. Connect the other end of the CDU’s power cable to the appropriate power
source.
17. Switch the front-panel circuit breaker on the CDU to the (ON) position.
18. Close and secure the cabinet door.
19. Restart all disk and tape drives and check them for proper function.

2 Cabinet Dual Power Option Installation Procedure
The following procedure describes how to install the dual power option kit.
1. Check the contents of the dual power option kit against the parts list shown
in Table 1 to verify that all the parts are present.
2. See Figure 1 to familiarize yourself with the location and identification of
each of the CDUs to be configured for the dual power option.
Figure 1 CDU Installation
REAR VERTICAL
CABINET RAIL

U-NUT, 10-32
(4 PLACES)

SCREW,
10-32 x .5 THRL
(4 PLACES)
CDU A
CDU A PRIMARY
POWER CABLE

CDU B

CDU B PRIMARY
POWER CABLE

CDU B
LABEL
(2 PLACES)
CABINET REAR
BASE PAN

CDU A
LABEL
(2 PLACES)

CDU A PRIMARY
POWER CABLE
CXO-3904A-MC

3. Spin down all disk drives and halt all tape drives in the cabinet.
4. Open the rear cabinet door to expose CDU A.
5. Switch the circuit breaker on the front panel of CDU A to the
position.

(OFF)

6. Disconnect CDU A’s primary power cable from the power source.

Note
In some cases, it may be desirable to allow the host computer system
to operate while the dual power option kit is being installed. In this
instance, the cabinet may be isolated from power by disconnecting the
host computer interface cables. Refer to the documentation for the host
computer configuration for the steps necessary to disconnect the cables.

7. Isolate the cabinet electrically by powering down the host computer.
8. To install CDU B, you must have free access to the interior area of the
cabinet. If necessary, gain access to the cabinet interior by separating
the cabinet from adjacent ones and removing its side panels. Refer to the
StorageWorks SH043-Series Cabinet Installation and User’s Guide for details
on exterior cabinet panels.
WARNING
Cabinet rail edges may be sharp and can slice or abrade skin and cable
insulation.

9. Remove CDU B from its packing material.
10. Locate the 10 pre-installed gray power cords coiled in the interior of the
cabinet. Bring the free end of each of the cords to the opening above CDU A.
11. Position CDU B at the opening above CDU A, as shown in Figure 1.
12. Plug the CDU plug of each gray cord into the rear panel of CDU B. The cords
may be plugged in in any order.
13. Slide CDU B into position against the vertical cabinet rails.
14. Using the hardware provided in the kit, mount CDU B to the cabinet chassis
rails, as shown in Figure 1.
WARNING
To prevent injury from electric shock, it is important that safety labels be
properly applied. Confusion can result from the fact that the cabinet uses
two primary power sources with the dual power option. Install the cable
and cabinet labeling carefully in accordance with the instructions in steps
16 through 21.

15. Remove one of the yellow "A" labels in the kit from its backing paper and
wrap it around the primary power cable for CDU A as close to the CDU end
as possible, as shown in Figure 1.
16. Remove another of the yellow "A" labels in the kit from its backing paper and
wrap it around the other (male) end of the primary power cable of CDU A, as
shown in Figure 1.
17. Locate the primary power cable for CDU B in the kit.
18. Remove one of the yellow "B" labels in the kit from its backing paper and
wrap it around the primary power cable for CDU B as close to the CDU
(female) end as possible, as shown in Figure 1.

19. Remove another of the yellow "B" labels in the kit from its backing paper and
wrap it around the other end of the primary power cable of CDU B, as shown
in Figure 1.
20. Install the primary power cable for CDU B into the cabinet, as shown in
Figure 1. Follow the same routing and use the same cable ties or clamps as
the existing primary power cable.
21. Plug the CDU B primary power cable into the receptacle on the front panel of
CDU B, as shown in Figure 1.
22. Remove one of the two yellow "CAUTION" labels from its backing paper and
place it on the cabinet’s top panel just above the rear door.
23. Remove the second yellow "CAUTION" label from its backing paper and place
it inside the cabinet in the vertical channel just to the left of the two CDUs.
24. Make sure that the redundant dc power supply required for the dual power
option is installed in each shelf. (The redundant dc power supply is the
right-hand one.)
25. Plug the gray power cord preinstalled next to each shelf position into the
redundant dc power supply in each shelf.
26. If the cabinet’s host computer interface cables were disconnected in step 7,
reconnect the cables.
27. Replace the cabinet side panels and reposition the cabinet next to adjacent
ones as appropriate.
28. Reconnect the primary power cable from CDU A to its source.
29. Connect the primary power cable from CDU B to the auxiliary power source.
30. Switch the circuit breakers on both CDUs to the (ON) position.
31. Close and secure the cabinet doors.
32. Restart all disk and tape drives and check them for proper function.