Digital Equipment DEC 3000 600 AXP, Service Information

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LED Codes
Table 14–1 (Cont.) Power-Up Test Serial ROM Codes
LED
Code
Test Description Reason for Failure
F9 Memory test with non-BCACHE
bit CLEAR, Dcache OFF, and mchk
enabled. If read as .NE. write, send error dump
to SROM port and branch to SROM
miniconsole.
F8 Memory test with non-BCACHE bit
SET, Dcache ON, and mchk enabled. If read as .NE. write, send error dump
to SROM port and branch to SROM
miniconsole.
F7 Memory test with non-BCACHE
bit CLEAR, Dcache ON, and mchk
enabled. If read as .NE. write, send error dump
to SROM port and branch to SROM
miniconsole.
F6 tc register test and initialization Should never stop here. If read as .NE.
write, send error dump to SROM port.
F5 Coreio register test and initialization Should never stop here. If read as .NE.
write, send error dump to SROM port.
F2 Look for I/O ROM manfacturing
data. Read of I/O ROM manfacturing data
did not return data expected. Send
error dump to SROM port and branch
to SROM miniconsole.
F1 Completed load of I/O ROM into
memory. Should never stop here.
30 SROM code execution completed
normally. Should never stop here.
20 Machine check. Send mchk dump to SROM port and to
SROM miniconsole.
If a failure occurs during this portion of the power-up procedure,
perform the following steps:
1. Verify that there is a good connection between the system
module and I/O module.
2. Verify that all memory modules are properly installed. You
may need to reseat memory modules.
14–3