Technics ST 300 Service Manual

Page 2

ST-300/3OOL

IF relectlon at 1,000 kHz

MW al1,000 kHz 60 dB
LW at 250 kHz 40 dB
I GENERAL
Output voltage 0.3V (0.6V IHF)
Power consumption 6W
Power supply

For Unlted Kingdom and Australia AC 50 Hz/60 HZ, 240V

I CONTENTS

For continental Europe
For others
Dimensions (WXHXD)

AC 50 HZ/60 Hz, 220V
AC 50 HZ/60 Hz. 110V/127V/220V/240V
430x 53 X 180 mm
(16-15/16" X 2-3/32" >< 7-3/32")
Weight 1.7 kg
(38 lb,)
Note:

Total harmonic distortion is measured by the digital spectrum

analyzer (H.P. 3045 system).

Page Page
LOCATION OF CONTROLS ..................... 2 CIRCUIT BOARDS AND WIRING CONNECTION
OPERATION (ST-300L) .................. . . . . 3 DIAGRAM (ST-300) ..................... 9, 1o
DISASSEMBLY INSTRUCTIONS .................. 4 cmcurr BOARDS AND wmme couuscnon
DIAL CORD INSTALLATION GUIDE . . . 4 DIAGRAM (ST-SOUL) ...........
RESISTORS AND CAPACITORS ................. 5 BLOCK DIAGRAM ,,,,,,,,,,,,,,,
MEASUREMENTS AND ADJUSTMENTS .......... 6~8 SCHEMATIC DIAGRAM ...........
TERMINAL GUIDE OF ICS, REPLACEMENT PARTS LIST .
TRANSISTORS AND DIODES ................ a EXPLODED VIEW ,,,,,,,,,,,,,,,
I LOCATION OF CONTROLS
- Front panel (ST-300L) (51309)
,- .
Band selector
(FM 9 AM)
(MW <-> LW) *
Band selectorSA "
(FM H AM)._.

l-Power stand by d), on switch

a n u u u u n u.
.. i .. g - .0 .-
mm. i... ...- um

um... .. El

-E.J'F'....

FM mutingIFM mode selector- LTunlng
(onlauto <-> oft/mono) control

FM stereo indicator-

(R CH)
}Output terminal
-(L CH)

0 Rear panel

AM antenna terminal-

FM antenna terminal-i

(750)
r. : =7 i
Q G B M4» L5 i= 5
- [XA]-Ersa. '_
, AM loop - AC Inlet-
' antenna terminal
(750) FM antenna Voltage selector-
(GND) termlnal [XA] area only.
(110/127I220l240V)
@ GD @ El AC outlet
[XA] area only.
F- - [Unswltched(50W MAX

L_