Product data
Removing a 2104 Model DU3 from a Rack
Notes:
1. Use this procedure only if you are removing a complete 2104 Model DU3 from
the rack (for example, to locate it elsewhere). If you are exchanging the frame of
the 2104, go to “Frame Assembly” on page 106.
2. You will need another person to help you remove the 2104 from the rack.
Attention: Unless the using system needs to be switched off for some other reason, do
not switch off the using system when servicing the 2104. Power cables and external
SCSI cables that connect the 2104 to the using system can be disconnected while that
system is running.
Step 1. If not already done:
a. Verify with the customer that all operations between the 2104 and the
using system have been stopped.
b. If applicable, unconfigure the 2104 from the using system. For more
information, see “Unconfiguring a 2104 from the Using System” in
“Appendix A. Additional Information for RISC Systems”.
c. Make a note of the positions of the external SCSI cables that are
connected at the back of the 2104.
d. Disconnect the external SCSI cables from the back of the 2104.
e. Remove all power from the 2104 (see “All Power” on page 71).
Step 2. Note: For a translation of the following notice, see “Appendix D. Translated
Safety Notices” on page 167.
CAUTION:
v The stabilizer must be correctly attached to the bottom front of the
rack to prevent the rack from tipping forward while the units are
being removed from the rack. Do not pull out or install any unit if the
stabilizer is not attached to the rack.
v If the 2104 is installed in a Model T00 or T42 rack, you must also
observe the safety notices for those racks before you start to remove
the 2104. You can find the safety notices in the System Installation
chapter of the 7014 Model T00 and T42 Rack Installation and Service
Guide, SA33-0577, or at web page:
http://www.rs6000.ibm.com/resource/hardware_docs/sa38-0577/a4aw9bas.html
v A 2104 Model DU3 weighs up to 38.5 kg (85 lb) with disk drive
modules installed. Do not attempt to remove the 2104 from the rack
unless all the disk drive modules have been removed.
You are now going to remove all the disk drive modules and (if present)
dummy disk drive modules from the 2104. If the 2104 is to be used later with
its disk drive modules configured as they are now, carefully make a note of
the locations of the disk drive modules and dummy disk drive modules before
Chapter 3. Removal and Replacement Procedures 115