DOWNLOAD Sony MHC-V7700AV / STR-V7700 Service Manual ↓ Size: 313.76 KB | Pages: 24 in PDF or view online for FREE

MICROFILM

STR-V7700 is RECEIVER section in
MHC-V7700AV.

Manufactured under license from Dolby Laboratories
Licensing Corporation.
“DOLBY”, “PRO LOGIC” and the double-D symbol 

a

  are

trademarks of Dolby Laboratories Licensing Corporation.

— Continued on next page —

Continuous RMS power output

FRONT SPEAKER:

China model

100+100 watts
6 ohms  at 1 kHz, 10%
THD (240V AC supply)
85+85 watts
6 ohms at 1 kHz, 10%
THD (220V AC supply)

Other models

100+100 watts
(6 ohmsat 1 kHz,10%
THD)
CENTER SPEAKER:
45watts (reference)
(8 ohms at 1 kHz, 10%
THD)
REAR SPEAKER:
30+30 watts (reference)
(8 ohms at 1 kHz, 10%
THD)

Peak music power output:

1800 watts (reference)

Inputs

MD/VIDEO 1 IN (phono
jacks): voltage 250 mV,
impedance 47 kilo ohms
AV INPUT AUDIO
(phono jacks): voltage 250
mV, impedance 47 kilo
ohms
MIX MIC 1/2 (phone
jack): sensitivity 1 mV,
impedance 10 kilo ohms

Outputs

MD/VIDEO 1 OUT
(phono jacks): voltage 250
mV, impedance 1 kilo ohm
PHONES (stereo phone
jack): accepts headphones
of 8 ohms or more.

FRONT SPEAKER:
accepts impedance of 6 to 16
ohms
CENTER SPEAKER:
accepts impedance of 8 to 16
ohms
REAR SPEAKER:
accepts impedance of 8 to 16
ohms
SUPER WOOFER:
Voltage 1 V, impedance 1
kilo ohm

Inputs

AV INPUT VIDEO
(phono jack):
1 Vp-p, 75 ohms
VIDEO IN (phono jack):
1 Vp-p, 75 ohms

Outputs

MONITOR OUT (phono
jack): 1 Vp-p, 75 ohms
VIDEO OUT (phono
jack): 1 Vp-p, 75 ohms
S-VIDEO (4-pin/mini-
DIN jack):
Y: 1 Vp-p, unbalanced,
sync negative
C: 0.286 Vp-p, load
impedance 75 ohms

FM stereo, FM/AM superheterodyne tuner

Tuning range

87.5-108.0 MHz

Antenna terminals

75 ohm unbalanced

Intermediate frequency

10.7 MHz

Tuning range
Thai models:

531-1,602 kHz
(with the AM tuning
interval set at 9 kHz)
530-1,710 kHz
(with the AM tuning
interval set at 10 kHz)

Other models:

MW
531-1,602 kHz
(with the MW tuning
interval set at 9 kHz)
530-1,710 kHz
(with the MW tuning
interval set at 10 kHz)
SW
5.95-17.90 MHz
(with the SW tuning
interval set at 5 kHz)

Intermediate frequency450 kHz
Antenna

AM loop antenna
External antenna terminal

— 2 —

Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tentalum capacitor may be damaged

by heat.

······································································ 3

·································································· 5

···································································· 6

3-1.

Circuit Boards Location ····················································· 6

3-2.

Printed Wiring Board — Panel Section — ························· 7

3-3.

Schematic Diagram — Panel Section — ··························· 9

3-4.

Printed Wiring Board — Main Section — ······················· 12

3-5.

Schematic Diagram — Main Section — ·························· 15

3-6.

Printed Wiring Board and Schematic Diagram
 — Amp/Key con Section — ············································ 19

3-7.

Printed Wiring Board and Schematic Diagram
 — Mic Echo/AV in Section — ········································ 23

3-8.

Printed Wiring Board and Schematic Diagram
 — Power Section — ························································ 26

3-9.

IC Pin Function ································································ 29

3-10. IC Block Diagrams ··························································· 31

4-1.

Main Section ····································································· 33

4-2.

Panel Section ···································································· 34

··································· 35

! OR DOTTED LINE WITH

! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS

Power requirements
Thai model:

220-240V AC, 50/60 Hz

Other models:

110-120V or 220-240V
AC, 50/60Hz
Adjustable with voltage
selector

Power consumption

230watts

Dimensions (w/h/d)

Approx. 280 

×

 205 

×

 336 mm

Mass

Approx. 7.0kg

Design and specifications are subject to change without notice.

— 3 —

— FRONT PANEL —

1 2 3 4 5 6 7 8 9 !º !¡ !™

!£

!¢

!∞
!§
!¶
!•

!ª

@º

@¡

@™

@£

@¢

@¶

@∞

@§

@•

@ª

#º

#¡

#™

#£

#¢

#ª

$º

#§

#¶

#•

#∞

1

KARAOKE PON/MPX button

2

DSP button

3

EFFECT ON/OFF button

4

MUSIC button

5

MOVIE button

6

GAME button

7

P FILE button

8

MEMO button

9

DBFB button

!º

VOLUME

!¡

GROOVE button

!™

TUNER BAND button

!£

STEREO/MONO button

!¢

FUNCTION button

!∞

MIC LEVEL/ECHO VOL

!§

MIX MIC 1 jack

!¶

MIX MIC 2 jack

!•

PHONES jack

!ª

EDIT button

@º

PLAY MODE button

@¡

1/ALL DISCS button

@™

REPEAT button

@£

HIGH FREQ button

@¢

ENTER/NEXT button

@∞

MULTI JOG STATION dial

@§

LOW FREQ button

@¶

MEMORY button

@•

TUNING MODE button

@ª

FLASH button

#º

LOOP button

#¡

WAVE button

#™

AV INPUT jack

#£

CLOCK TIMER SET button

#¢

TIMER SELECT button

#∞

KEY CONTROL 

˜

 button

#§

KEY CONTROL 

n

 button

#¶

DOLBY PROLOGIC button

#•

C. MODE button

#ª

DISPLAY/DEMO button

$º

POWER button

— 4 —

— BACK PANEL —

$¡

SYSTEM CONTROL

$™

MD/VIDEO 1 jack

$£

FRONT SPEAKER terminal

$¢

SUPER WOOFER jack

$∞

VIDEO OUT jack

$§

CENTER SPEAKER terminal

$¶

REAR SPEAKER terminal

$•

VOLTAGE SELECTOR switch (EXCEPT TH, KR)

$ª

ANTENNA terminal

• Abbreviation

TH : Thai
KR : Korean

$ª

$¡

$™

$£

$¢

$∞

$•

$§ $¶