Sony str ga 7 es service manual

Page 1

STR-GA7ES/TA-VA7ES

US Model
Canadian Model

Australian Model
STR-GA7ES

Chinese Model

TA-VA7ES

SERVICE MANUAL

Manufactured under license from Dolby
Laboratories Licensing Corporation.
Dolby ," the doub|e "Pro Logic are trademarks o! Dolby
Laboratories Licensing Corporation.

Photo: STR~GA7ES

SPECIFICATIONS
Amplifier section Inputs (STR-GA7ES) Outputs REC OUT VIDEO L 2
' (AUDIO) OUT:
Sensllivity Impedance SIN Voltage 250 mv,
POWER OUTPUl PHONO 2 5 mV 50 75 dB Impedance 10 kiluhms
Stereo mode 8 ohms 20 Hz < 20 kHz, (MM) ' 1°th WOOFER OUT
90 W + 90 W -____..-_._._. Voltage: 2 V
CD, Impedance: 1 kilohms
Sunound mode 230th atl kHz, EgfiI/EIIAD 150 mV . 50 82 dB PHONES: Acceprs 10w
THD 0.8 % WW) 1. kilohms and high impedance
Z. 3' TV, headphones
TA-VA7ES STR-GA7ES LD
BASS BOOST 47 dB at 70 Hz
78 IHF . . . .
"3' NOW/Ch 9° W/CI' Digital sugnaI processor section
Center 100W 90 W Inputs (Tllij7ES) Surround DELAY TIME
Rear 40W/ch 40 W / ch Sensmvfly Impedance $lN In {7110 LOGIC mode:
$333139 15.0 ms - 30 ms, 5 ms
. I ' '6?
Dynamic power 140 W + 140 W, 8 ohms Input level) 5 .
output (swam-5s 240 w + 240 w, 4 ohms pHONo 25 mV 50 73 d]; In 2:23;:ound field
Haymonic Less man 005 % WV)- 5 ms - 30 ms, 5 ms step
distortion at $EPE REAR LEVEL
. ~15dB-+lOdB,ldD
"6 9" DAT/MD, 150 mV so 92 dB step
Fvequency IHONO: RIAA 335%," 1010th (A) CENTER LEVEL"
response equalization curve LID ,TUIIIER " Only {or sound fields with a CENTER
105 dB LEVEL parameter

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FM STEREO/FM-AM RECEIVER
TA-VII7ES

INTEGRATED AV AMPLIFIER
S 0 NY;

CD, TAPE] DAT/MD,
TV, LD, VIDEO 1, 2:
STR»GA7ES: 0

10 Hz - so kHz_,dR
TA-VA7ES:
20Hz-50kHz rida

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IONE 28 dB at 100 Hz and
10 kHz
FM tuner section (STH-GA7ES)

tuning range 87.5 - 106.0 MHz

Antenna 75 ohms, unbalanced
terminals
Sensitivity Mono: 18.3 dBl', 4.5 pV

Stereo: 38.3 dBf, 45 uV

Usable sensitivity 11.2 dBf, 2 V (lHF)

SIN Mono: 76 dB
Stereo: 70 dB

Harmonic Mono: 0.3 %

distortion at Stereo: 05 %

1 kHz

Separation 45dBat1 kHz

Frequency 30 Hz - 15 kszdB

response

Selectivity 60 dB at 400 kHz

AM tuner section (STR-GA7ES)

With10 kHz interval:
530 - 1710 kHz

With 9 kHz interval:
531 ~ 1710 kHz

Tuning range

Antenna Loop antenna

Usable Sensitivity 50 dB/m (at 1.000 kHz or

999 kHz)
SIN 54 dB (at 50 mV/m)
Harmonic 0.5 % (50 mV/m.
distortion 400 kHz)
Selectivity At 9 kHz: 35 dB

At 10 kHz: 40 dB

' You can change the AM tuning interval
between 9 kHz and 10 kHz, Alter tuning
in any AM station, turn off the receiver.
Hold down the PRESET + button and
press the POWER button. All preset
stations will be erased when you change
the interval. To reset the intervaL repeat
the procedure.

Video section
Inputs VIDEO 1, 2, TV:
1 Vp~p 75 ohms
Outputs VIDEO I, 2, MONITOR:
1 Vp-p 75 ohms

General
System
ILL quartzlocked digital
synthesizer system
Preamplifier section:
Low-noise NF type
equalizer
Power amplifier section:
Pure-complimentary
SEPP

Power USA and Canadian
requirements model:
120 V AC, 60 Hz
Australian model:
240 V AC, 50 Hz
Chinese model:
220-230V AC, 50/60Hz

Power USA model: 280 W
consumption Canada model: 390 VA
Other models: 310 W

Tuner section (STR-GA7ES):

AC outlet:

Dimensions

Mass (Approx)

Suppfied
accessories

Australian model:

I switched, total IZOW
Other models:

2 switched, total 120 W

430 x I60 x 425 mm
(17 x 63/: x 16 Vi inches)

13.8 kg (30 lb 7 oz)

Remote commander
(remote) (I)

Slze AA (R6) batteries (2)

STR-GA7ES:
FM wire antenna (1)
AM loop antenna (1)

Design and specifications are subject to
change without notice,

MODEL IDENTIFICATION

- Specification Label Primed on Back Panel -

SONY:

STR-GA7ES
TA-VA7ES

MODEL NO. m

FM STEREO/FM-AM RECEIVER (sTR-GHES)
INTEGRATED AV AMPLIFIER ('IA-VA7ES)

WM

US, Canadian model : AC 120 V 60 Hz
Australian model : AC 240 V 50Hz
Chinese model : AC 220-230 V 50/60 Hz