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9030/40 Diagnostics
5-5
Service Panel Switches
Switch
Function
SELF TEST
Pressing this latching switch initiates a continuous system self-test. As long as the
switch is latched, continous self testing occurs. Pressing the switch again, unlatching it,
terminates the self-test.
RESET
Pressing this switch resets the system, stopping all running programs and resetting all
I/O select codes. After reset, the system waits for further instructions.
START
Pressing this switch initiates system run from an idle state. If the system does not
restart, the computer must be turned off and then powered up.
MEMDUMP
Pressing this switch dumps the contents of main memory onto the system disc. This
switch should be used only when a load fault occurs and no system message is
displayed.
Service Panel LEDs
LED
Indication When Lit
Cure
POWER ON
Power supply is working, and power is
Normal operation.
being provided to the computer.
RUN
Operating system is running.
Normal operation.
SELF TEST
Self-test is running. This LED turns on
Determined by other LEOs.
when the self-test begins and turns off
when the self-test completes. It normally
remains on when a failure occurs;
another LED lights to indicate the na-
ture of the failure.
PROCESSOR 1-12 Finstrate in the specified processor stack Check finstrate.
slot failed to pass self-test.
100-6
Interface card in the specified I/O slot
Check I/O card. peripheral device, inter-
failed to pass self-test.
face cable.
LOAD
Operating system is being loaded during
If
light remains on, see Fault Indicators
the power-up sequence. The light goes
(Sheet 2) in Chapter 4.
off after the load is completed.
DOOR
Interface card cage door or processor
Close door(s), tighten thumbscrews.
stack door is open.
TEMP
Processor stack temperature has ex-
Check ambient air temperature, airflow,
ceeded 100°e.
fans. power supply assembly.
PS
Main power has been shut down.
Check power supply assembly, I/O
cards, finstrates, system control module,
motherboard. I/O backplane.
SCM
System control module is faulty.
Check SCM.
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