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Sun Enterprise 6500/5500/4500 Systems Reference Manual

Defective Clock+ Board

There is one clock+ board in the system.

Caution - Caution -

The clock+ board is not hot-pluggable. You must halt the operating system and turn off AC power before replacing the clock+ board.

Table 10-8 Clock+ Board

Indication 

Test/Procedure 

Reference 

System will not boot  

 

Examine LED displays. 

See Table 9-1.

Clock+ board yellow "service" LED does not light during POST or remains lighted after POST 

 

Check clock+ board.  

 

System and board LEDs do not flash, or fail POST repeatedly with random LED patterns 

 

Check clock+ board and power supplies. 

See Table 10-7.

TTY port A does not respond  

Check settings for the port. 

Replace peripheral power supply. 

See "Using a Terminal".