Removing And Replacing A Power And Cooling Unit - Sun Microsystems StorEdge T3 Service Manual

TABLE 7-1
AC LED (Green
or Amber)
Green
Green
Green
Note – Even if the LED indicates a power cooling unit failure, always verify the
FRU status using either the CLI or Component Manager before replacing the power
cooling unit. Refer to Section 3.7.3, "Checking FRU Status" on page 3-18, or the Sun
StorEdge Component Manager User's Guide for instructions.
7.3 Removing and Replacing a Power and
Cooling Unit
Caution – To ensure correct airflow for system cooling, both power and cooling
units must be in the installed position for normal operation. A failed power and
cooling unit should be removed only when a replacement power and cooling unit is
available to be inserted.
Caution – Replace only one power and cooling unit at a time to prevent system
interruption.
7-4 Sun StorEdge T3 and T3+ Array Field Service Manual • September 2001
Power and Cooling Unit LED Descriptions (Continued)
PS LED
(Green or Amber)
Amber
Blinking green
Blinking amber
Description
Indicates one or more of following:
• Over-temperature condition; PCU disabled
• DC power not available; PCU disabled
• Both fans fault; PCU disabled
• Battery on refresh cycle
• Battery not ready; charging
Indicates one or more of following:
• PCU disabled
• One fan fault
• Battery hold-time low; PCU remains enabled
• Battery out of warranty; PCU remains enabled
• Battery life-span failure; PCU remains enabled
Note—Verify a power and cooling unit failure
using the CLI or Component Manager.