Test and Replace Display Components
17
Test and Replace a ProLink Router
A ProLink Router (PLR) sends the signal from the DMP-8065
to the modules via SATA cables.
Test a PLR
Before replacing a PLR, it may be benecial to perform a
self-test. To perform this test:
1� Connect a duplex ber cable from Fiber Port A to
Fiber Port B. Refer to Figure 28.
2� Connect a working SATA cable from SATA Port A to
SATA Port B.
3� Connect the power cable to the PLR. This will start the
PLR self-test.
4� Wait for the test to complete. This may take
up to 90 seconds. If the PLR has successfully
sends and receives data through each of the
ports, the letters P.A.S will appear on the Seven
Segment Display. If the letters E.r.r appear,
the Seven Segment Display will show the
port numbers with issues. Refer to the ProLink
Router 6050 Manual in Section A: Reference
Documents (p�27) for a full list of error codes.
The PLR outputs test patterns in a specic order
starting with Red, Green, Blue, and White. The PLR
sends out these patterns with full redundancy (out
both port A & B at the same time). If all of the
modules change colors, it shows they all work and
that visually the display is ne, but there could still
be a signal failure that will not show up visually
because of redundancy. The Amber/Yellow and
Magenta test patterns provide a way to nd the normally non-visual breaks.
After it shows the White test pattern, the PLR shows
a Yellow pattern, but it only sends the that pattern
out on port A (no redundancy), any modules that
receive that command will turn Yellow. However,
if there is a signal break, the modules will not
receive the command to turn Yellow and will
remain at their previous color, which was probably
White. Refer to Figure 29. The modules that turn
Yellow are working correctly. Modules that are
not Yellow indicate where the signal break is. If all
of the modules turn Yellow, it indicates the signal
path in the "A" direction is working 100 percent.
After showing the Yellow pattern, the PLR shows
the Magenta pattern, but it only sends that
pattern out on Port B. Any modules that do not
receive the magenta command will remain at
their previous color, which is probably Yellow. Refer to Figure 30. Wherever they do not
turn magenta indicates a signal break. If they all turn Magenta it means the signal path
Figure 28: ProLink Router
Connected For Self-Test
Figure 29: ProLink Router Port A Test
Figure 30: ProLink Router Port B Test
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