Apple performa 6200.6300 Servicehandbuch

 

 Troubleshooting

Symptom Charts/System - 6

 

Flashing “?” 

appears at startup in 

system with version  

B logic board and  card 

in PDS or 

communications slot 

 

Note

 

:   Version “B” logic boards display a “B” at the end of the 

serial number printed on the board near the communications slot 

port.  (See figure on the next page.)
1 Verify that system software is version 7.5 or later.

2 If chip at logic board location U6 does not include picture of 

Texas and is p/n 343S0138-a, and there is no wire at U27 

on underside of board, replace logic board.