Toshiba 140E4B User Manual

IMPORTANT

PLEASE READ

INSTRUCTIONS FOR TUNING

ON PAGES

2/3.

COLOUR TELEVISION

WELCOME

TO THE BRIGHT

NEW WORLD

OF

TOSHIBA

Your new, precision-built Toshiba Colour Television receiver has been designed and
engineered by one of the world's largest makers of
you a very dependable and natural colour television picture.
These operating instructions explain the location and operating procedures of all the
controls on your Toshiba Model
To enjoy your receiver to the full from the very beginning, read these instructions
carefully and keep them handy for reference.

140E4B Solid State Colour Television Receiver.

COLOUR

IC's, transistors and diodes, to give

General Information

Preparation
Mains Supply

The mains supply required is
because of the wide variety of
therefore need to have fitted to the
your home.
We recommend that where possible a 13-amp plug is used, FITTED

FUSE. Connect the plug as described in the instructions below.

lM

PORTANT

The wires in the mains lead are coloured as follows:
BLUE: NEUTRAL
BROWN:

for

LIVE

'

use

,

.

.

240

volts 50
w?ll'sockets used in domestic dwellings. You will

Hz.

A

plug is not supplied with the television

mains lead a plug suited to the particular sockets in

WITH

BLUE

A

3-AMP.

-

Connections to a typical 13-amp. plug

These colours might not be the same as those used to identify the terminals of yourplug,

so

connect the wires as follows:

-

BLUE
BROWN

Choosing

Optimum colour reception requires a good outdoor aerial. The type of aerial required

depends upon the site, its distance from the transmitter, local interference, etc.

An existing aerial previously used for black and white reception, might need re-

adjustment or re-siting for the best reception of colour signals. Roof and loft aerial

adjustments should be carried out by professional aerial contractors.

The loop aerial supplied may be used if signal strength is adequate, but if after selecting

suitable station and rotating aerial to best position picture is still noisy then a roof or loft

aerial is recommended.

to the terminal marked

-

to the terminal marked

your

Aerial

N,

or coloured black.

L,

or coloured red.

Automatic Degaussing
All colour television receivers are sensitive to 'magnetic influences', usually caused by

either moving the receiver from one place to another or using certain electrical
appliances near the receiver. This residual magnetism as it is called, sometimes causes
distortion which gives rise to 'blotchy' areas of colour in the picture. To avoid these
effects the receiver incorporates an automatic degaussing circuit which operates for a
short while immediately each time the receiver is switched on. This circuit removes any
residual magnetism in the metal partsof the picture
time the receiver is used the purity of the colours displayed on the screen remain true
and lifelike.

Viewing conditions
The receiver should be

not fall on the screen.
Warning

Do not dismantle the receiver and do not connect an earth lead to any internal part.
Do not place

the picture might

owor near to the receiver any large metal object, otherwise the quality of

positioned so that the direct light from a lamp or a window does

bB affected.

tubeand therefore ensures that each

General Introduction

The re'ceiver incorporates a 12-channel Tuning System with A.F.C. (Automatic

Frequency Control) which will keep the receiver accurately tuned to the selected
channel.

68

Up to 12 programmes can be pre-tuned to any channel between 21 and

5,

Bands4 and
Kingdom.
The tuning controls together with the colour, contrast and brightness are all located
behind a flap. The programme selectors, volume control and mains
located on the front panel of the receiver.

the Bands used for625-line colour transmissions throughout the United

inclusive on

on/off switch are

Operating the receiver

Switch on the receiver by pressing the On/Off knobathe digital indicatorwill display
a figure (last selected) and after a few seconds the screen will light up.

Note: Do not switch the receiver on andoffagain in rapidsuccession as this

electrical damage.

Turn up the volume to the required level by rotating volume knob A clockwise.

1.

Press the Programme Selector button required
Remove the flap covering the pre-setting control by pulling flap towards you from
the underside.

2.

Press normal/preset button to preset position, then press-++ button and keep
pressed until a programme arrives on the screen. To scan'complete UHF band may
take one and a quarter minutes. If no station appears within one and a quarter
minutes press­on screen.

To insert this station into memory press
normal position.

c-

button and keep pressed once again until a programme arrives

(1-1

2).

normal/preset button so that it returns to

may

cause

To tune in the othertelevision stations, repeat the tuning procedure above
the required programmes are tuned.

Before starting to tune other stations select another "Programme Selector Button''.

3.

The receiver is now ready to have any adjustments made, if necessary, to the
Brightness, Contrast and Colour controls.

Adjustment of picture controls
Adjust the Brightness control so that the details in the darkest parts of the picture are just

discernible.
Adjust the Contrast control to give a satisfactory tonal range between the light and dark
sections of the picture.
Adjust the Colour control for the correct colour intensity. Where possible adjust for

correct skin tones, preferably on a 'live' studio picture such as a newsreader.
When the tuning and picture adjustments have been made the flap should be replaced
by inserting at top first then 'clicking' bottom into place.

(1,Z)

until all

BRIGHTNESS

Using

If you wish to use the receiver in conjunction with a video recorder, programme position

AV

should be used. Tune this selector to the output frequency of the recorder just as if
you were tuning to a normal programme. Your Toshiba video recorder provides a test
signal to assist the tuning procedure.

For your later con-

venience may we
suggest you

around the dotted
line and insert tuning To insert this station into memory press normal preset

information into loose

tuning cover flap.

a

Video Recorder

-

r~ress norm%/pGetutton prese~po~o~th~

I

cut arrives on the screen. If no station appears press

press

,

I

button and keep pressed.

I

button so that it returns to normal position.

LTO scan complete

--p---------

-++

button and keep pressed until a programme

UHF

band takes

1%

minutes.

-

1

t

J

I

I

I

The

Self-help

guide

Always use this simple check list before you consult your dealer - it could save you

time and unnecessary expense.

BUT,

under

NO

voltages inside your receiver.

high

Check that wall socket has not become 'dead' by plugging in another electrica
appliance such as a table lamp. Check fuse in mains plug. (Note:
should be used
in the plug.) NEVER attempt to put a plug in a wall socket without the plug cover
being securely attached. NEVER attempt to use fuse wire or silver foil to repair
13-amp plugs. This is verydangerous. The only practical way to test
substitute it for a known good fuse.

forall television receivers and not the

circumstances should you ever attempt to open the back cover. There are

Symptoms

No picture, no sound.
Poor sound, good picture.
Poor picture.

Weak reception on some channels.

Poor or blotchy colour.

Solutions
Make sure T.V. is plugged in and that wall socket an

T.V. set mains switches are ON.

Try a different channel or band. if

Check aerial connections on the back of the receiver.

good'sound.

Lines in picture.

Distorted picture.

Horizontal bars.

13-amp fuse

O.K.

A

usually supplied

probably station trouble.

Check aerial for broken wires.

5-amp fuse

a

fuse is to

Re-orient aerial

(if indoor type).

Adjust colour control andlorswitch off
or overnight.

4

Adjust brightness control.

Adjust contrast control.

Adjust Volume control.

at

mains plug for minimum of

20

minutes

The proper use of

In co-operation with the British Radio Equipment Manufacturers' Association, these
DOS and DON'TS have been prepared
used.

This receiver has been designed and manufactured to meet the highest international
standards. but, like any electrical apparatus operated at mains voltage, care must be
taken if you are to obtain the best results and safety is to be assured.

this

receiver

in

order to ensure that this receiver is properly

DO read the operating instructions before

you attempt to use the receiver.

DO ensure that all
(including the
sion leads) are properly made and in
accordance with manufacturer's instruc­tions.

DO have the receiver checked periodically
by a qualified engineer; besides ensuring
that you will continue to have the best
results. he can check that the whole
installation is electrically safe.

DO ensure that thereceiver is switched off
at the mains outlet if you go away for an
extended period. Remove the plug if the
mains outlet has no switch.

DO always call a qualified engineer if you

are ever in any doubt about the installation,
operation, or safety of your receiver- he is
the best person to advise you.

DO consult the British Telecom Radio

Interference
aerial installation but still suffer from
interference. For details ask for the 'Good
Radio and Television Reception' leaflet at
main post offices.

Remember that to obtain the best performance and lasting satisfaction from your
receiver:

see thar
have it regularly maintained by a qualified technical organisation;
ensure that

ABOVE

ALL:

never let children push anything into holes or slots in the cese- this could result
in en electric shock;
never guess or take a chance with your receiver- it is

~lectrical connections

mains plug and any extell-

Service if you have a good

ir

is properly installed with an adequate eerial system;

it

is correctly used by ell the family.

DON'T continue to operate the receiver if
you have any doubt about it working
normally, or if it is damaged in any way
withdraw the mains plug and consult a
qualified engineer.

DON'T remove any fixed
expose dangerous voltages.

DON'Tleave equipment switched on when
it is unattended unless it is specifically
stated that it is designed for unattended
operation or has a stand-by mode. Switch
off using the switch on the equipment and
make sure that yourfamily know how to do
this. Infirm or handicapped people may
require special arrangements to be made.

DON'T obstruct the all-round ventilation;
especially DON'T stand the receiver close
to curtains or on soft furnishings such as
carpets. Overheating can cause damage

and shorten the life of the receiver.

DON'T allow electrical equipment to be

exposed to rain or moisture.

DON'T

coveras this may

better to be safe than sorry1

-

TOSHIBA CORPORATION

l - 1

SHIBAURA, MINATO-KU, TOKYO, JAPAN

TOSHIBA

TOSHIBA HOUSE, FRIMLEY ROAD, FRIMLEY. CAMBERLEY. SURREY. GU16 5JJ. ENGLAND

[U.K.]

LIMITED

Q

Printed

In

England