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360 Chapter 37 Hardware procedures
241-7401-240 5.2S1
Removing a control processor
Remove a control processor as preparation for installing a replacement.
Prerequisites
• Verify that the CP being removed is inactive. The LED should be other
than solid green.
• Ensure that no system switchover has occurred in the last 10 minutes of
real time.
• If you are removing a CP-with-BITS and external timing is configured,
you will need to reset the dip switch on the BITS termination panel to
“single CP” if the CP will not be replaced within 30 minutes. You can
reset the dip switch before or after removing the BITS cable.
CAUTION
Risk of damage by electrostatic discharge (ESD)
When you handle processor cards, wear a grounded
antistatic wrist strap or equivalent to protect electronic
parts. For more information, see “Avoid damage from
static electricity” (page 174).
CAUTION
Risk of service loss
Do not remove a CP when the LED is solid green. A
solid green LED means that the CP is in service and
active. If you remove the active CP, you cause a
switchover. For more information see “Processor card
LED status display” (page 241).