DEC DECstation 5000 Model 100 Series, Maintenance Manual

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Table F-15. Keyboard and Mouse Test Error Codes
Error Code Meaning
1 Self-test failed.
2 Serial line timeout waiting for receive done (rdone).
3 Search for loopback failed.
4 Returned value was not zero.
Real-Time Clock Register Test
The real-time clock register test checks the real-time clock
registers. To run the real-time clock register test, type t f51
and press Return.
Real-time clock register test error codes
Table F-16 describes the error codes used in real-time clock
register test error messages.
Table F-16. Real-Time Clock Register Test Error Codes
Error Code Meaning
1 Update in progress (UIP) bit remained set past allotted
time.
2 Writing pattern to time/alarm/registers failed.
3 Miscompare occurred reading pattern from time/alarm
registers.
Real-Time Test
The real-time test checks times generated by the real-time clock
against hard-coded time values. To run the real-time test, type
t f51 and press Return.
Real-time test parameters and error messages
The parameter P1 in real-time test error messages indicates the
actual value in the real-time clock.
F–12 Test Commands and Messages Produced by Version PDE3 ROM Chips