British Telecom VANGUARD, Руководство пользователя

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SECTION 7
TROUBLESHOOTING
If your Vanguard does not appear to be
working properly, you should first of all
run through the following simple
checks:
1.
Check that the handset has been
replaced properly on Vanguard and
any other phones connected to the
same installation.
2. Ensure that the plug is inserted
correctly into the wall socket.
3. Check that the operating instructions
have been followed correctly.
4.
Check that the correct signalling and
recall modes have been set.
5.
Check that the tone caller is not
switched off.
6.
Check that the total REN value does
not exceed
4.
(See Section
9.4)
If The Problem Still Persists ....... .
You can try two simple tests yourself to find
out whether the fault lies with your
Vanguard, the exchange line or any other
telephones you have.
1.
If you have a second telephone that is
working connect your Vanguard to that
socket and dial a number. If you still can't
make a call your Vanguard may be faulty.
2. If your Vanguard is your only telephone
but you have more than one socket you
can find out whether your Vanguard or
your socket is faulty by plugging into
another socket.
If a fault is still suspected, and your
Vanguard is rented, you should contact your
local British Telecom Fault Service. The
number is usually
151 but check your Phone
Book. A British Telecom engineer may be
able to give you more advice and may also
be able to carry out a remote test on your
installation.
When necessary, if your
Vanguard is rented, a visit to your premises
will
be arranged.
10
SECTION 8
MAINTENANCE
If your Vanguard is rented, the rental charge
covers any maintenance that may be needed
from British Telecom. Your Vanguard has
been designed to give you years of trouble­
free service, provided it is looked after
properly.
Do not try to adjust or repair your
Vanguard yourself.
There is no part of the
phone that you can service and any thing you
may try to do could possibly make the
situation worse.
Care of your new Vanguard
To preserve the appearance of your
Vanguard avoid leaving it exposed to direct
sunlight which may fade the colour of the
case.
To clean it simply use a damp cloth - do
not use abrasive or aerosol cleaners, both of
which can cause problems either to the case
or the circuitry inside.
The Vanguard is an electrical device and
so you should avoid using it near a bath.
Finally, try not to twist or knot the coiled
cable.