IBM 8688 manual Serial port test error codes

Serial port test error codes

Code/explanation		FRU/action
0601h	(Data written to port XXXXh was	1.	Check connection of loopback if used during test.
yyyyh. Data read back from the port was
		2.	I/O board.
zzzzh.)
0602h	(Interrupt identification register test	I/O board
failed .)
0603h	(Data written to port XXXXh was	1.	Check connection of loopback if used during test.
yyyyh. Data read back from the port was
		2.	I/O board.
zzzzh .)
0604h	(Line status register test failed at port	I/O board
XXXXh .)
0605h	(Interrupt activation test failed at port	I/O board
XXXXh.)
0606h	(Data transfer test failed at port	1.	Check connection of loopback if used during test.
XXXXh 1.)
		2.	I/O board.
0607h	(Loop back test failed at port XXXXh	1.	Check connection of loopback if used during test.
.)
		2.	I/O board.
0608h	(FIFO register test failed at port	I/O board
XXXXh.)
0609h	(FIFO trigger level test failed at port	I/O board
XXXXh. )
0610h	(FIFO character timeout indication	I/O board
test failed at port XXXXh.)
0611h (FIFO data transfer test failed at port		I/O board
XXXXh. )
0612h	(Baud rate speed test failed at port	I/O board
XXXXh. )

Chapter 6. Symptom-to-FRU index 169