Service manual

Diagnostic LEDs Definitions 123
Table D–1 (Cont.) Diagnostic LEDs Definitions
State Substate Definitions Recommendations
0101 xxxx
1
The self-test started under
control of the APT system.
The substate indicates
the test currently being
executed.
Enter TEST 50 to see the
results.
0100 xxxx
1
The system exerciser
started from a console TEST
command. The substate
indicates the value of
the lower four bits of the
command. If the system
exerciser starts with a
T 101, the substate contains
a 1 (hexadecimal).
Read the test results on
the screen. Troubleshoot
the failing device.
0011 0000 The system exerciser
started under control of the
APT test delivery system.
Read the test results on
the screen. Troubleshoot
the failing device.
0010 xxxx
1
The entity-based module
received a request from a
host to enter monitor mode.
This lets the host send
commands to the system.
This is indicated if the
functionality of the EBM
is implemented at a later
release of the ROM.
Reserved for future use.
0001 xxxx
1
Console mode was
successfully entered
and is ready to accept
commands. This does not
apply to power on. The
substate indicates the
failing subsystem if there
is one. This differs from a
self-test complete, because
the console can be entered
by other means.
This code indicates that
the console was entered
from something other
than a TEST command or
power on halt, such as the
HALT button.
1
1111 = MONO, 1110 = CLK, 1101 = NVR, 1100 = DZ,1011 = MEM
1001 = FP, 1000 = IT, 0111 = SCSI-A or SCSI-B
0110 = SCSI-A or SCSI-B, 0101 = SYS, 0100 = 8PLN, 0011 = (option)
0010 = (option), 0001 = NI