Sony STR-GX290 Service Manual page 2

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STR-GX290/GX390
FM tuner section
AM tuner section
Tuning range
87.5-108 MHz
531-1602 kHz
Section
Titile.
Page
Antenna
External antenna
terminals
75 ohms, unbalanced)
j minal
SECTION 1. GENERAL
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3
sea oso SB.
ne. re 4.5 uV(mo
SECTION 2. IC PIN FUNCTION
-vcceeseesessseeseseeseseees 4
Germany
18.3 dBF, 2.25 pV (mo-
SECTION 3. ELECTRICAL ADJUSTMENTS -------------- 6
quieting
no) : Germany
38.3 dBE, 45 uV(ster-
SECTION 4. DIAGRAMS
eo): AEP
4-1.
Circuit Boards Location
ceccssssscereeeseeceeeeeeteceeeenseecenens
8
38.3 dBf, 22.5 pV (st-
4-2.
Semiconductor
Lead
Layouts
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9
ereo) : Germany
Usable
11.2dBf , 2 wV(IHF):
| Loop antenna:
4-3.
Printed Wiring Bosrds —Main Section— ssr++rsssrrsrrrreers 11
Sensitivity
AEP
500 yV(at 1000 kHz)
4-4,
Schematic Diagrams —Main Section— -rrrrrr+rssss+eeesereees 15
11.2 dBf, 1 »V (IHF):
s a c r a i y ]
teeeeseseceeessecesccaanssccseasseesessssceeees
Germany
IC Block Diagram
18
4-5.
Printed Wiring Bosrds — Display Section— +*++++++++++++++"* 19
Signal-to-noise
76 dB(mono) : AEP
54 dB(at 50 mV/m)
Frequency
30 Hz-15 kHz*}° dB
response
General
System
Tuner section: PLL quartz—locked digital synthesizer system
Preamplifier section : low-noise NF type equalizer amp
Power amplifier section: pure complementary SEPP
Power requirements
220-230 V, 50/60 Hz
Power consumption
100 W_ (STR-GX390)
Dimentions
SAFETY-RELATED
COMPONENT WARNING!!
430 X 135 X 300 mm (w/h/d)
Weight
|
COMPONENTS IDENTIFIED BY MARK /\ OR DOTTED
STR-GX990:65 kg
LINE WITH MARK A\ ON THE SCHEMATIC DIAGRAMS
STR-GX200.60 kg
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION.
REPLACE THESE COMPONENTS WITH
Accessories supplied
SONY
PARTS WHOSE
PART
NUMBERS APPEAR AS
FM wire antenna (1): AEP model only
SHOWN
IN THIS MANUAL OR IN SUPPLEMENTS PUB-
AM loop antenna (1)
LISHED
BY
SONY.
Remote commander (STR—GX390 only)
RM-S103 (1)
Sony batteries SUM-3 (NS) (2)

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