Normal Tcm Operation; Tcm Alphanumeric Display Codes - IBM TotalStorage SAN256N Director 2045-N16 Installation And Maintenance Manual

Normal TCM operation

During normal operation, the TCM LEDs and 16-character display provide the following
information:
• The PWR OK LED is green, indicating that DC power to the module is within
tolerances and the module is not in a power on reset condition.
• The ONLINE LED is green, indicating that the TCM is active and online.
• The HEARTBEAT LED is flashing yellow, indicating that the module is functioning
correctly.
• The FAULT LED is not lit.
• The System Power A and System Power B LEDs are not lit
• The System Fan LED is not lit.
• The Ethernet Connector LEDs display the following:
• The 16-character display continuously scrolls [Name:xxx] [Ex. IP. y.y.yyy.yyy.yyy.yyy]
[OK], where:

TCM alphanumeric display codes

The TCM 16-character alphanumeric display is used to display system fault codes. Each
code references a Field Replaceable Unit (FRU) and a specific fault. Messages are
scrolled across the display until the entire text message has been shown. At that point,
the string is refreshed based on the current conditions, and the process of displaying the
new text string repeats again continuously. If there are multiple significant errors to be
reported, each error scrolls through at an interval of no more than 4 characters per
second, or 5 seconds per fault.
Status display level definitions
List 1: Status - System Level
List 2: Status - Board Level
– The Link LED is yellow, indicating an Ethernet connection is established
– The Activity LED is flashing green, indicating data is being transmitted across the
Ethernet connection
– xxx = SAN256N name
– yyy = the IP address of the TCM
[ OK ] => Normal functioning
[POWR]x,x... => Power Supply failure (X denotes the POWR id 0-3)
[FANS]x,x... => Fan is not functioning normally (X denotes the FAN id 0-19)
[LOAD] => system is loading code.
[FAIL] b,b... => Module is present, but not functioning. (b is from List 3, FRUs)
[TEnterprise ManagerP] b,b... => Temperature is not normal. (b is from List 3, FRUs)
[OFLN] b,b... => Module is in offline state. (b is from List 3, FRUs)
Appendix A. Data collection and troubleshooting
103