Mechanical Failures; Power-On Failures; Failures Subsequent To Power-On - Sun Microsystems Netra CT Service Manual

4.7.3

Mechanical Failures

Symptom
Unable to insert the CPU card into the backplane.
Action
1. Verify that there are no mechanical and physical obstructions in the slot where the
CPU card is going to be installed.
2. Make sure no pins on the board connectors or the CompactPCI backplane
connectors are bent or damaged.
4.7.4

Power-On Failures

This section provides examples of power-on failure symptoms and suggested
actions. There can be several reasons for the power-on failures.
G
Make sure the CPU card is installed properly.
Note – If both Ready and Alarm LEDs on the CPU card are green, the board is
partially functional and capable of running POST (power on self-test). It means that
the basic functionality of the board is present. If none of the aforementioned LEDs is
green, and the board is installed properly, the board is not functional. In that case,
contact your Sun supplier or field service engineer.
4.7.5

Failures Subsequent to Power-On

Symptom
Cannot connect successfully to a TTY serial port; there are no POST messages and
unable to send keyboard input.
Action
1. Check the TTY cable for proper setup.
4-22 Netra CT Server Service Manual • January 2004