For details of tests and procedures, refer to the panel with the matching flag (see overleaf).
D
or
ATTENTION
READY
FAULT
Fast Flicker
The problem could be a loose cable
connection. Check all extension
cables are properly connected.
If this does not solve the problem,
continue along this path of the
flowchart.
Test
successful?
(READY state)
B
Perform a module loopback
test on the NIC.
Test
successful?
(READY state)
There is a possible problem
with the NIC.
Do
the system
displays on the processor
card display indicate that the
software is loaded and
running?
Load the DECNIS software
through the alternative port.
See the DEC Network
Integration Server Software
Installation card for the load-
host operating system.
Load
successful?
The problem was a faulty
cable.
D
Replace the distribution
panel.
C
Perform an NCL loopback
test on the faulty port of
the distribution panel.
Test
successful?
All
tests successful?
Check the local modem
and remote connections –
see DEC Network Integration
Server Problem Solving.
D
Replace the section of cable
that failed the test.
Perform NCL loopback test on the extension cables.
If there is more than one cable, test all cables in sequence:
1. Test the cable nearest the adapter cable.
2. If that cable passes the test, test the next section of cable.
3. Repeat step 2 until all sections of the cable have been
tested, or the test fails.
Check the LED display on
the processor card, then see
the Installation and Service
Manual for your DECNIS.
LKG-5726–91
C
A
Check the operational
communication ports for the
DEC WANcontroller 618.
Take note of the faulty port(s).
D
Replace the connecting cable.
Load the DECNIS software
through the suspect line.
See the DEC Network
Integration Server Software
Installation card for the load-
host operating system.
1
1
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
D
Replace all the extension
cables.
Problem Solving Flowchart – note the NIC LED state and follow the procedure indicated
Do
the system
displays on the processor
card display indicate that the
software is loaded and
running?
D
If this does not solve your
problem, replace the
distribution panel.
A
Check the operational
communication ports for the
DEC WANcontroller 618.
Take note of the faulty port(s).
C
Perform a module loopback
test on the connecting cable.
Yes
Can you
load software through
an alternative port on the
DEC WANcontroller
618 or another
NIC?
A
4