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SERVICE MANUAL
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.
Amplifier section
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.
MICROFILM
STR-V7700
SPECIFICATIONS
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
Video section
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
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM STEREO/FM-AM RECEIVER
E Model
Chinese Model
FM tuner section
Tuning range
87.5-108.0 MHz
Antenna terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
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
— Continued on next page —
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Summary of Contents for Sony STR-V7700
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Page 1: Service Manual
STR-V7700 SERVICE MANUAL E Model Chinese Model 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. SPECIFICATIONS Amplifier section FRONT SPEAKER:... -
Page 2: Table Of Contents
MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS by heat. LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. — 2 —... -
Page 3: General
SECTION 1 GENERAL — FRONT PANEL — 1 2 3 4 5 6 7 8 9 !º !¡ !™ $º #ª #• !£ #¶ #§ #∞ !¢ #¢ !∞ #£ !§ !¶ #™ !• #¡ #º @ª @• @¶ @§ @∞... - Page 4 — BACK PANEL — $ª $¡ $™ $£ $¢ $• $∞ $§ $¶ $¡ SYSTEM CONTROL $™ MD/VIDEO 1 jack $£ FRONT SPEAKER terminal $¢ SUPER WOOFER jack $∞ VIDEO OUT jack $§ CENTER SPEAKER terminal $¶ REAR SPEAKER terminal $•...
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Page 5: Test Mode
SECTION 3 SECTION 2 DIAGRAMS TEST MODE FL DISPLAY/KEY LED TEST MODE AGING MODE 3-1. CIRCUIT BOARDS LOCATION Press the REPEAT, ENTER/NEXT and SURROUND buttons CD aging mode simultaneously. To execute the CD aging, set the three discs to the CD tray and All FL segments and all LEDs turn on. -
Page 13: Ic Pin Function
3-9. IC PIN FUNCTION • IC501 TMP87CM75F-6623 (DISPLAY CONTROL) Pin No. Pin Name Description — Not used — Power supply (–35V) COM CLK Transfer clock output serial data ST DATA IN Serial data input COM DATA Serial data output ST CE Chip enable output LED LAT Latch output to IC504... - Page 14 Pin No. Pin Name Description FL–1G FL–2G FL–3G FL–4G FL–5G FL–6G FL–7G Grid output to FL501 FL–8G FL–9G FL–10G FL–11G FL–12G FL–13G FL–14G FL–P1 FL–P2 FL–P3 FL–P4 FL–P5 FL–P6 FL–P7 FL–P8 FL–P9 FL–P10 FL–P11 FL–P12 FL–P13 FL–P14 FL–P15 FL–P16 FL–P17 Segment output to FL501 FL–P18 FL–P19...
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Page 15: 3-10. Ic Block Diagrams
3-10. IC BLOCK DIAGRAMS IC3001 LA2786 P. S. P. S. DUAL T CONTROL CMODE MUTE CTRIM CONTROL IC3000 LV1016 INV-PHASE ADM-CONT SRAM L+DELAY R+DELAY VOL/MUTE OUT-FILTER – DC-OUT IN-FILTER (7k/5k) (40kHz) L–R S-TRIM (–6dB) B-NR – 31 –... - Page 16 IC105 M62427FP-A KEY IN2 BB22 SBAND GRAPHIC EQUALIZER – BPF OUT BUF IN1 – BPF IN BUF OUT1 IN 2B AVDD – – – DGND IN 2A LATCH – U-CON AVSS INTER DATA – – FACE CLOCK AGND IN 1A DVDD PORT C –...
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Page 17: Exploded Views
SECTION 4 EXPLODED VIEWS Note: • -XX, -X mean standardized parts, so they may • The mechanical parts with no reference number The components identified by mark ! or have some differences from the original one. in the exploded views are not supplied. dotted line with mark ! are critical for safety. -
Page 18: Panel Section
4-991-317-01 KNOB (JOG) * 64 A-4403-285-A PANEL BOARD,COMPLETE (MY,SP,KR,CH) X-4948-896-1 PANEL ASSY, FRONT * 64 A-4403-701-A PANEL BOARD,COMPLETE (IA) 4-962-708-11 EMBLEM (4-A), SONY * 64 A-4403-708-A PANEL BOARD,COMPLETE (TH) X-4948-612-1 DISPLAY ASSY, BUTTON 4-951-620-01 SCREW (2.6X8), +BVTP 4-932-810-11 CUSHION(FL) * 66... -
Page 19: Electrical Parts List
SECTION 5 AMP-A ELECTRICAL PARTS LIST Note: • Due to standardization, replacements in the • RESISTORS When indicating parts by reference number, parts list may be different from the parts All resistors are in ohms. please include the board name. specified in the diagrams or the components METAL: metal-film resistor used on the set. - Page 20 AVIN KEY-CON Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 1-666-060-11 AVIN BOARD A-4403-284-A KEY-CON BOARD,COMPLETE (MY,SP,KR,CH) ********** *********************** A-4403-700-A KEY-CON BOARD,COMPLETE (IA) < CAPACITOR > *********************** A-4403-707-A KEY-CON BOARD,COMPLETE (TH) C6301 1-162-286-31 CERAMIC 220PF *********************** C6302 1-162-286-31 CERAMIC 220PF...
- Page 21 KEY-CON MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R6111 1-247-903-00 CARBON 1/4W C162 1-126-964-11 ELECT 10uF R6112 1-249-425-11 CARBON 4.7K 1/4W F C163 1-126-963-11 ELECT 4.7uF R6113 1-247-807-31 CARBON 1/4W C164 1-136-166-00 FILM 0.12uF R6115 1-249-441-11 CARBON 100K...
- Page 22 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C3008 1-126-964-11 ELECT 10uF < DIODE > C3009 1-162-294-31 CERAMIC 0.001uF C3010 1-126-963-11 ELECT 4.7uF D101 8-719-987-63 DIODE 1N4148M C3011 1-126-961-11 ELECT 2.2uF D102 8-719-987-63 DIODE 1N4148M C3012 1-164-159-11 CERAMIC 0.1uF...
- Page 23 MAIN Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < TRANSISTOR > R125 1-247-807-31 CARBON 1/4W R126 1-249-429-11 CARBON 1/4W Q111 8-729-119-78 TRANSISTOR 2SC403SP-51 R129 1-247-887-00 CARBON 220K 1/4W Q111 8-729-620-05 TRANSISTOR 2SC2603-EF R137 1-247-807-31 CARBON 1/4W Q112 8-729-119-78 TRANSISTOR 2SC403SP-51...
- Page 24 MAIN MIC ECHO Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R620 1-249-431-11 CARBON 1/4W R2051 1-249-417-11 CARBON 1/4W F R670 1-249-431-11 CARBON 1/4W R2052 1-249-441-11 CARBON 100K 1/4W R690 1-249-432-11 CARBON 1/4W R2053 1-249-431-11 CARBON 1/4W R691 1-249-432-11 CARBON...
- Page 25 MIC ECHO PANEL VOLUME Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks C6012 1-126-160-11 ELECT R6201 1-249-419-11 CARBON 1.5K 1/4W F C6013 1-126-160-11 ELECT R6202 1-249-418-11 CARBON 1.2K 1/4W F C6014 1-104-664-11 ELECT 47uF R6251 1-249-419-11 CARBON 1.5K 1/4W F C6015...
- Page 26 PANEL VOLUME Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks < DIODE > < TRANSISTOR > D505 8-719-023-94 DIODE SEL6910A-TH12 (KEY CONTROL-#) Q501 8-729-620-05 TRANSISTOR 2SC2603-EF D506 8-719-023-94 DIODE SEL6910A-TH12 (KEY CONTROL-b) Q502 8-729-422-57 TRANSISTOR UN4111 D508 8-719-046-36 DIODE SEL5921A-TH15 (DOLBY PROLOGIC) Q503...
- Page 27 PANEL VOLUME Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks R559 1-247-807-31 CARBON 1/4W R631 1-249-435-11 CARBON 1/4W R560 1-247-807-31 CARBON 1/4W R632 1-249-437-11 CARBON 1/4W R561 1-247-807-31 CARBON 1/4W R633 1-247-903-00 CARBON 1/4W R563 1-247-807-31 CARBON 1/4W R634 1-249-437-11 CARBON...
- Page 28 SORROUND AMP Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks 1-666-069-11 PRI BOARD < CONNECTOR > ********* 1-532-293-11 FUSE HOLDER * CN4001 1-564-522-11 PLUG, CONNECTOR 7P < CONNECTOR > < DIODE > CN851 1-564-321-00 PIN, CONNECTOR 2P D4003 8-719-987-63 DIODE 1N4148M D4053...
- Page 29 SUPPLY POWER Ref. No. Part No. Description Remarks Ref. No. Part No. Description Remarks A-4398-997-A SUPPLY POWER BOARD,COMPLETE ! R830 1-215-881-11 METAL OXIDE 2W F (MY,SP,KR,CH) (TH) ***************************** A-4403-693-A SUPPLY POWER BOARD,COMPLETE (IA) ! R831 1-216-446-00 METAL OXIDE 2W F ***************************** (EXCEPT TH) A-4403-215-A SUPPLY POWER BOARD,COMPLETE (TH)
- Page 30 STR-V7700 Sony Corporation 97H16086-1 Printed in Japan © 1997.8 9-920-960-11 Home A&V Products Company Published by General Engineering Dept. — 46 — (Shibaura)