Technics ST GT 550 Service Manual

Page 2

ST-GT5 0

I G E N ERAL
Output voltage
for (E) (EB) (GO) (GN) areas 0.3 V (0.6 V, lHF)
for (EG) area 0.6 V (1.2 V, IHF)
Power consumption 9 W
Power supply
for (E) (EB) (EG) (GN) areas AC 50 Hz/60 Hz, 230~240 V
for (GO) area AC 50 HZISO HZ, 110/127I220/240 V

I COINTENTS

OCAUTION FOR MAINS LEAD . .

OACCESSORIES ............ . 3
OLOCATION OF CONTROLS . 3,4
OCONNECTIONS . . . 5, 6
IMANUAL TUNER OPERATION . . .. . . . 7
oENJOYING RDS BROADCASTS . 8~12
ODISASSEMBLY INSTRUCTIONS . 13, 14
ISCHEMATIC DIAGRAM ...... 15~27

Dimensions (Wx HXD) 430x915 x308 mm
Weight 2.9 kg
Notes:

1 . Specifications are subject to change without notice.
Weight and dimensions are approximate.

2. Total harmonic distortion is measured by the digital spectrum
analyzer.

Page
OPRINTED CIRCUIT BOARD DIAGRAM ................ 28~32
OWIRING CONNECTION DIAGRAM ............ 33
OMEASUREMENTS AND ADJUSTMENTS 34~37
OFUNCTIONS OF IC TERMINALS .............. 38
OBLOCK DIAGRAM ...................... 39, 40
OREPLACEMENT PARTS LIST . 41 ~44, 46
'CABINET PARTS LOCATION . . . ....... 45
OPACKAGING ........................................ 46

I CAUTION FOR AC MAINS LEAD

(EB area code model only)

For your safety, please read the following text
carefully.

This appliance is supplied with a moulded three pin
mains plug for your safety and convenience.

A 5-ampere fuse ls fitted in this plug.

Should the fuse need to be replaced please ensure
that the replacement fuse has a rating of 5-ampere
and that it Is approved by ASTA or BSI to 881362.
Check for the ASTA mark ® or the BSI mark $
on the body of the fuse.

If the (plug contains a removable fuse cover you
must ensure that It is refitted when the fuse is replac-
ed.

If you lose the fuse cover the plug must not be used
until a replacement cover ls obtained.

A replacement fuse cover can be purchased from
your local dealer.

CAUTION!

iF THE FITTED MOULDED PLUG IS UN-
SUITABLE FOR THE SOCKET OUTLET IN YOUR
HOME THEN THE FUSE SHOULD BE REMOVED
AND THE PLUG CUT OFF AND DISPOSED OF
SAFELY.

THERE IS A DANGER OF SEVERE ELECTRICAL
SHOCK IF THE CUT OFF PLUG IS INSERTED
INTO ANY 13-AMPERE SOCKET.

If a new plug is to be fitted please observe the wiring
code as shown below.
If in any doubt please consult a qualified electrician.

IMPORTANT
The wires in this mains lead are coloured in accor-
dance wlth the following code:

Blue: Neutral

Brown: Live
As the colours of the wires in the mains lead of this
appliance may not correspond with the coloured
markings identifying the terminals in your plug, pro-
ceed as follows: '
The wire which is coloured BLUE must be con
nected to the terminal in the plug which Is marked
with the letter N or coloured BIACK.

The wire which is coloured BROWN must be con-
nected to the terminal in the plug which is marked
with the letter L or coloured RED.

Under no circumstances should either of these
wires be connected to the earth terminal of the
three pin plug, marked with the letter E or the Earth
Symbol J7- .

Before use
Remove the connector cover as follows.

Connector
cover

How to replace the fuse
1. Remove the fuse cover with a screwdriver.

Fuse
% (5 ampere)