HP 9000 rp4410-4 User Service Guide, Fifth Edition - HP 9000 rp4410/4440 - Page 202

Converting SCSI From Duplex to Simplex Operation, Safety Information, Accessing the SCSI Backplane

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6. Check for error messages. 7. Check the System Event Log (SEL) for erroneous system events. Converting SCSI From Duplex to Simplex Operation This section explains how to convert your SCSI from duplex to simplex. The procedure requires unplugging and stowing the SCSI B cable, removing the SCSI duplex board, and installing a jumper cable on the SCSI backplane. Safety Information Use care to prevent injury and equipment damage when performing removal and replacement procedures. Voltages might be present within the server. Many assemblies are sensitive to damage by electrostatic discharge. To prevent harm to both you and the server,follow the listed guidelines to ensure safe handling of components: • Use an antistatic wrist strap and a grounding mat, such as those included in the Electrically Conductive Field Service Grounding Kit (HP 9300-1155). • Handle accessory boards and components by the edges only. Do not touch any metal-edge connectors or any electrical components on accessory boards. • Do not wear clothing subject to static charge build-up, such as wool or synthetic materials. WARNING! Ensure that the system is powered off and all power sources have been disconnected from the server before converting your server. Voltages are present at various locations within the server whenever an ac power source is connected. This voltage is present even when the main power switch is in the off position. Failure to observe this warning can result in personal injury or damage to equipment. Accessing the SCSI Backplane Before adding the accessories required to convert the server from duplex to simplex, you must remove outer components to access the SCSI backplane. To gain access to the SCSI backplane, follow these steps: 1. If rack-mounted, slide the server out from the rack until it stops. (See "Accessing a Rack-Mounted Server" (page 149).) NOTE: If the server is pedestal mounted, you need not remove the pedestal to perform the duplex to simplex conversion. Proceed directly to the next step. 2. Remove the front bezel. See "Removing the Front Bezel" (page 152). 3. Remove the front cover. See "Removing the Front Cover" (page 152). 4. Remove the memory extender board. See "Memory Extender Board" (page 155). 5. Remove the processor extender board. See "Processor Extender Board" (page 161). 6. Remove the top cover from the chassis. See "Removing the Top Cover" (page 153). Converting to Simplex To convert to simplex, follow these steps: 202 Removing and Replacing Components

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6.
Check for error messages.
7.
Check the System Event Log (SEL) for erroneous system events.
Converting SCSI From Duplex to Simplex Operation
This section explains how to convert your SCSI from duplex to simplex. The procedure requires
unplugging and stowing the SCSI B cable, removing the SCSI duplex board, and installing a
jumper cable on the SCSI backplane.
Safety Information
Use care to prevent injury and equipment damage when performing removal and replacement
procedures. Voltages might be present within the server. Many assemblies are sensitive to damage
by electrostatic discharge.
To prevent harm to both you and the server,follow the listed guidelines to ensure safe handling
of components:
•
Use an antistatic wrist strap and a grounding mat, such as those included in the Electrically
Conductive Field Service Grounding Kit (HP 9300-1155).
•
Handle accessory boards and components by the edges only. Do not touch any metal-edge
connectors or any electrical components on accessory boards.
•
Do not wear clothing subject to static charge build-up, such as wool or synthetic materials.
WARNING!
Ensure that the system is powered off and all power sources have been
disconnected from the server before converting your server.
Voltages are present at various locations within the server whenever an ac power source is
connected. This voltage is present even when the main power switch is in the off position.
Failure to observe this warning can result in personal injury or damage to equipment.
Accessing the SCSI Backplane
Before adding the accessories required to convert the server from duplex to simplex, you must
remove outer components to access the SCSI backplane. To gain access to the SCSI backplane,
follow these steps:
1.
If rack-mounted, slide the server out from the rack until it stops. (See
“Accessing a
Rack-Mounted Server” (page 149)
.)
NOTE:
If the server is pedestal mounted, you need not remove the pedestal to perform
the duplex to simplex conversion. Proceed directly to the next step.
2.
Remove the front bezel. See
“Removing the Front Bezel” (page 152)
.
3.
Remove the front cover. See
“Removing the Front Cover” (page 152)
.
4.
Remove the memory extender board. See
“Memory Extender Board” (page 155)
.
5.
Remove the processor extender board. See
“Processor Extender Board” (page 161)
.
6.
Remove the top cover from the chassis. See
“Removing the Top Cover” (page 153)
.
Converting to Simplex
To convert to simplex, follow these steps:
202
Removing and Replacing Components