Chapter 3. Service procedures
Personal ESD requirements ............................3-1
Toolsand files overview ..............................3-1
Using the css.snap script .............................3-3
css.snap file structure .............................3-4
Files collected by css.snap...........................3-4
css.snap file package names ...........................3-6
Disk space handling ..............................3-6
SP Switch2 supervisor self-test ...........................3-6
Self-test Conditions ..............................3-7
Switch supervisor status verification using Perspectives ..................3-7
Opening a switch pane .............................3-7
Checking switch status .............................3-7
Base code verification ..............................3-8
Updating the SP Switch2 supervisor code .......................3-8
Removing and restoring switch resources .......................3-9
Removing an SP Switch2 from the active configuration .................3-9
Restoring an SP Switch2 to the active configuration ..................3-9
Using Perspectives to fence and unfence nodes attached to the switch ...........3-10
Fencing nodes...............................3-10
Unfencing nodes ..............................3-10
Service position procedures ............................3-10
Placing an SP Switch2 into service position .....................3-10
Replacing an SP Switch2 from service position....................3-11
Resetting the clock and bootlist after servicing a node ..................3-11
Running diagnostics on a switch port ........................3-12
Attention: Components in the frame are susceptible to damage from static discharge. Always use an
ESD wristband when working inside frame covers. (See “Personal ESD requirements” for more details.)
Do not touch the pins or circuitry on these components.

Personal ESD requirements

The processor uses FRUs that are known to be sensitive to electrostatic discharge (ESD). Toprevent ESD
damage to FRUs or to prevent system failures, observe the following procedures:
vKeep the FRU in its original static-dissipative shipping container until the FRU is ready to be installed in
the system. Move the static-dissipative container near the location where the FRU is to be installed
(within ESD wrist strap distance). If the FRU must be put down for any reason, first place it in its
static-dissipative container or place it on the static-dissipative mat.
vOpen only the covers that are necessary to complete the task. Any time a cover is open the service
representative and all people in the area must be ESD-safe. If power is switched on, or if removing or
exchanging any FRU, always use the ESD kit (part 93F2649).
1. Put on the ESD wrist strap.
2. Attach the ESD cable to the wrist strap.
3. Attach the ESD mat to the wrist strap, if required.
4. Attach the insulated clip to the ESD cable.
5. Attach the insulated clip to the frame holes labeled ESD. If the frame holes are not available, use a
grounding point on the frame.

Tools and files overview

The following three tables provide an overview of the tools, setup files, and tuning files used in the service
procedures.
© Copyright IBM Corp. 2000, 2002 3-1