Kontron VMOD-2D - Manual (Page 68)

VMOD-2/VMOD-2D
12/15/97
Installation
Page 4 - 8 Man. ID 03139, Rev. Index 0200
4.7 General Notes for Using the System
Having designed a fully-functioning system, the only thing that remains is to keep it in good
health. The three biggest areas of risk to your system are at the following times:
• Connecting peripherals, disk-drives, printers, terminals and external
power sources.
• Adding or changing modules, address settings and locations, etc.
• Becoming complacent and not referring to the manuals when altering or
adding modules.
The way to reduce these risk is;-
• to check the electrical compatibility of all devices which you intend to
connect to your system, -
• to ensure that they are powered from the same mains supply branch
(phase) and grounded to the same reference point, -
• to shut down all power before making or breaking any connections to
An unknown problem
prevents the selected
piggyback(s)/VMOD-
2 configuration from
functioning. If the VMOD-2 functioned before, and
has been reconfigured for a new appli-
cation/address/piggyback, steps 1 to 3
may help find/confirm the faulty area. 1) Replace previous
known working con-
figuration and try for
correct function of
VMOD-2.
2) Put piggyback into
other location on
VMOD-2 or if avail-
able onto another
VMOD/VMOD-2 mod-
ule and test for cor-
rect piggyback
function.
If the piggyback appears to function
correctly with other VMOD-2s or in
VMOD-2's other piggyback location the
problem could be damaged or burnt out
tracks which may not have used/
needed by the last piggyback fitted.
If the piggyback will not function with
other VMODs or in VMOD's other loca-
tion the problem is almost certainly due
to the piggyback or the application soft-
ware.
Table 4-1: Indications on Trouble-Shooting
Problem Possible Cause or Solution Action