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Dell™PowerEdge™1850SystemsService-Only Parts Replacement Procedures
Before You Begin
Recommended Tools
SCSI Backplane Board
Control Panel Assembly
System Board
Before You Begin
The procedures in this document require that you remove the cover and work inside the system. While working inside the system, do not attempt to service
the system except as explained in this document and in the Installation and Troubleshooting Guide and the User's Guide available on support.dell.com. Always
follow the instructions closely, and ensure that you review all safety precautions in your Product Information Guide.
The Installation and Troubleshooting Guide contains information on system indicators, messages, and codes; system diagnostics; troubleshooting; parts removal
and replacement procedures; and jumpers, switches, and connectors.
The User's Guide contains information on the System Setup program.
Recommended Tools
You may need the following items to perform the procedures in this section:
l Key to the system keylock
l #2 Phillips screwdriver
l Wrist grounding strap
SCSI Backplane Board
Removing the SCSI Backplane Board
1. If applicable, remove the bezel.
2. Turn off the system and attached peripherals, and disconnect the system from the electrical outlet and peripherals.
3. Remove the system from the rack and place it on a work surface.
4. Remove the system cover.
5. If the SCSI data cable is connected to the SCSI controller on the riser card, lift the two plastic rivets that secure the riser card insulator, then remove the
riser card insulator.
See "Removing the Riser Card" in the Installation and Troubleshooting Guide.
6. Disconnect the SCSI data cable from the connector on the riser card or RAID controller card.
If the cable is connected to a SCSI controller in expansion slot PCI1(the expansion slot farthest from the power supply bay), remove the riser card to
allow removal of the SCSI cable. See "Removing the Riser Card" in the Installation and Troubleshooting Guide.
Figure 1-1. Removing or Installing the SCSI Backplane Board
CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as
authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not
authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
CAUTION: See your Product Information Guide for complete information about safety precautions, working inside the computer, and protecting
against electrostatic discharge.
CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as
authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not
authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.