Multinode Module Service
3-1
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3
TEST/TROUBLESHOOTING
Section 3
3.1 TESTS
Testing of the Multinode Module is accomplished through both hardware/firmware tests
and software. Hardware/firmware tests are built into the module to provide two means of
functionally checking the unit, whether or not it is connected to the LCN. The first test is
initiated when power is applied. Pressing the
RESET
button also initiates the hardware/
firmware test. Software tests can be accomplished when the module is connected to the
system. As an example, loading each node's personality initiates a software Quality Logic
Test (QLT).
There may be up to four nodes physically contained in a Multinode Module. Each node has
a processor which can be loaded and tested independently and each node has a different
LCN address. The
RESET
button simultaneously initiates self-tests on all nodes in the
module.
Figure 3-1 is a flow diagram showing the relationship of the hardware and software tests.
3.2 TEST PROCEDURES
NOTE
Each Node in a Multinode Module must have a processor board installed before it can be
tested. Multiple functions, such as processor, LCN interface, and memory, are physically
located on the K2LCN board.
Initiate power-up tests by setting the power switch to on. The red LEDs on the boards in eacsh
node light for a few seconds (less than 30), then turn off and the green LEDs turn on as each of
the boards passes its processor dialog tests. When the tests have been completed, each
node's alphanumeric display indicates its node address.
Check the power supply ERROR and POWER OK LEDs at the bottom of the unit and the FAN
ALARM LED on the right side of the unit to ensure that no red LEDs are on and the green
POWER OK LED is lighted.
Press the
RESET
button. The red LEDs momentarily go on as above, then go out when the
green LEDs come on. Recheck the power supply, board, and fan LEDs as above. Note
that each alphanumeric display indicates its node address.
If any of the above conditions cannot be met, refer to subsection 3.3 Troubleshooting.
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