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Thunder i7500 S2720 Addendum 

 
 

1) Beep Code Information 
2) Pin-out for NIC four pin headers J53 & J55 

 
 

Beep Codes

  

Below are definitions of Beep Codes not mentioned in the User’s Manual:

 

 

Beep codes that are used by AMIBIOS: 

 
 
 
 
 
 
 
 
 
 

 
 
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Number of Beeps 

Description 

Memory refresh timer error 

Parity error 

Main memory read / write test error 

Motherboard timer not operational 

Processor error 

Keyboard controller BAT test error 

General exception error 

Display memory error 

ROM checksum error 

10 

CMOS shutdown register read/write error 

11 

Cache memory bad 

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