Sony-STRV616-rec-sm维修电路原理图.pdf
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1、STR-DE625/V616 US Model Canadian Model STR-DE625 Chinese Model STR-V616 SERVICE MANUAL FM STEREO/FM-AM RECEIVER MICROFILM Continued on next page SPECIFICATIONS Dolby Laboratories Licensing Corporation. “DOLBY” the double-D symbol a “AC-3” and “PRO LOGIC” are trademarks of Dolby Laboratories Licensin
2、g Corporation. Photo : STR-DE625 RadioFans.CN 收音机爱 好者资料库 2 RadioFans.CN 收音机爱 好者资料库 3 SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS W
3、HOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. ATTENTION AU COMPOSANT AYANT RAPPORT LA SCURIT! LES COMPOSANTS IDENTIFS PAR UNE MARQUE ! SUR LES DIAGRAMMES SCHMATIQUES ET LA LISTE DES PICES SONT CRITIQUES POUR LA SCURIT DE FONCTIONNEMENT. NE REMPLACER CES COMPOS
4、ANTS QUE PAR DES PISES SONY DONT LES NUMROS SONT DONNS DANS CE MANUEL OU DANS LES SUPPMENTS PUBLIS PAR SONY. TABLE OF CONTENTS After correcting the original service problem, perform the following safety checks before releasing the set to the customer: Check the antenna terminals, metal trim, “metall
5、ized” knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE The AC leakage from any exposed metal part to earth ground and from all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microampers).
6、 Leakage current can be measured by any one of three methods. 1.A commercial leakage tester, such as the Simpson 229 or RCA WT-540A. Follow the manufacturers instructions to use these instruments. 2.A battery-operated AC milliammeter. The Data Precision 245 digital multimeter is suitable for this jo
7、b. 3.Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The “limit” indication is 0.75 V, so analog meters must have an accurate low-voltage scale. The Simpson 250 and Sanwa SH-63Trd are examples of a passive VOM that is suitable. Nearly all battery oper
8、ated digital multimeters that have a 2V AC range are suitable. (See Fig. A) SAFETY CHECK-OUT To Exposed Metal Parts on Set 0.15F1.5k AC voltmeter (0.75V) Earth Ground Fig. A. Using an AC voltmeter to check AC leakage. 1.GENERAL 4 2.TEST MODE6 3.DIAGRAMS 3-1.Circuit Boards Location 7 3-2.Block Diagra
9、m Main Section 9 3-3.Block Diagram Power Section 11 3-4.Printed Wiring Board AMP Section 13 3-5.Schematic Diagram AMP Section 15 3-6.Printed Wiring Board Video Section 17 3-7.Schematic Diagram Video Section 19 3-8.Printed Wiring Board S VIDEO Section 21 3-9.Schematic Diagram S VIDEO Section 23 3-10.
10、 Printed Wiring Board Input Section 25 3-11. Schematic Diagram Input Section 27 3-12. Printed Wiring Board Display Section 29 3-13. Schematic Diagram Display Section 31 3-14. Printed Wiring Board Power Section 33 3-15. Schematic Diagram Power Section 35 3-16. IC Pin Function Description 37 3-17. IC
11、Block Diagrams39 4.EXPLODED VIEWS 4-1.Front Panel Section 42 4-2.Chassis Section 43 5.ELECTRICAL PARTS LIST44 4 SECTION 1 GENERAL LOCATION AND FUNCTION OF CONTROLS FRONT PANEL Photo : STR-DE625 123546 78 9 !? !? !?!?!?!? !?!?!?!? ? ? ? #? #? #? ? ? ? ? #? #? #? #? 11/u (POWER) button 2MULTI CURSOR C
12、ONTROL 3DISPLAY REAR LEVEL +, buttons 4SURROUND, BASS/TREBLE, INDEX indicators 55.1/DVD, TONE, BASS BOOST indicators 6MASTER VOLUME control 7BALANCE control 8MUTING button 9SOUND FIELD ON/OFF button !SOUND FIELD MODE button !BASS BOOST button !TONE ON/OFF button !5.1/DVD INPUT button !SOUND FIELD GE
13、NRE button !PHONO button !TV/DBS button (DE625) !TV/LD button (V616) !CD button !VIDEO 2 button !TAPE/MD button VIDEO 1 buttons Numeric buttons DIRECT TUNING button SHIFT buttons PRESET TUNING +, buttons MEMORY button FM/AM button FM MODE button SLEEP button TUNING +, buttons #PHONES jack #SPEAKERS
14、A, B switches #SET UP button #CURSOR MODE button #TUNER button #VIDEO 3 button #VIDEO 3 INPUT 5 REAR PANEL Photo : STR-DE625 12 34 569!? !? !? 78 !?!?!?!? !?!?!? 1ANTENNA (FM/AM) 2y SIGNAL GND 3TV/DBS 4VIDEO 1 5MONITOR 6WOOFER 7SURROUND SPEAKERS (REAR) 8SURROUND SPEAKERS (CENTER) 9WIRELESS REAR SPEA
15、KER !AC power cord !AC OUTLET !FRONT SPEAKERS (A/B) !TAPE/MD !CD !PHONO !5.1/DVD INPUT !VIDEO 2 !S-LINK !IMPEDANCE SELECTOR Photo : STR-V616 1ANTENNA (FM/AM) 2y SIGNAL GND 3TV/LD 4VIDEO 1 5MONITOR 6WOOFER 7SURROUND SPEAKERS (REAR) 8SURROUND SPEAKERS (CENTER) 9WIRELESS REAR SPEAKER !AC power cord !AC
16、 OUTLET !FRONT SPEAKERS (A/B) !TAPE/MD !CD !PHONO !5.1/DVD INPUT !VIDEO 2 !S-LINK !IMPEDANCE SELECTOR 1234569!? !? !? 78 !?!?!?!? !?!?!? 6 SECTION 2 TEST MODE SOFTWARE VERSION DISPLAY MODE * The software version is displayed. * Procedure: While depressing the TUNER and the BASS BOOST buttons simulta
17、neously, press the power 1/u button to turn on the main power. The software version is displayed. KEY TEST MODE * All keys are tested. * Procedure: While depressing the CD and the BASS BOOST buttons simultaneously, press the power 1/u button to turn on the main power. The message REST40 appears. Whe
18、n the respective keys are pressed one after another, the number decrements in the order of REST39, REST38, and so on. FLUORESCENT INDICATOR TUBE TEST MODE * All fluorescent segments are tested. When this test is activated, all segments turn on at the same time, then each segment turns on one after a
19、nother. * Procedure: While depressing the TV/LD and the BASS BOOST buttons simultaneously, press the power 1/u button to turn on the main power. All segments turn on at the same time, then each segment turns on one after another. FACTORY SET MODE * All preset contents are reset to the default settin
20、g. * Procedure: While depressing the VIDEO and the BASS BOOST buttons simultaneously, press the power 1/u button to turn on the main power. The message FACTORY appears and the present contents are reset to the default values. ALL CLEAR MODE * All preset contents are cleared when this mode is activat
21、ed. Use this mode before returning the product to clients upon completion of repair. * Procedure: While depressing the VIDEO and the TAPE/MD buttons simultaneously, press the power 1/u button to turn on the main power. The message INITIAL appears and initialization is performed. SOUND FIELD CLEAR MO
22、DE * The preset sound field is cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair. * Procedure: While depressing the SOUND FIELD ON/OFF button, press the power 1/u button to turn on the main power. The message S. F. CLEAR appears and
23、initialization is performed. AM CHANNEL STEP 9 kHz/10 kHz SELECTION MODE * Either the 9 kHz step or 10 kHz step can be selected for the AM channel step. * Procedure: Set the FUNCTION to AM. Turn off the main power. While depressing the TUNING+ button or the PRESET+ button, press the power 1/u button
24、 to turn on the main power. Either the message 9k STEP or 10k STEP appears. Select the desired step. DEMO MODE * Continuous demonstration starts when the demo mode is activated. * Procedure: While depressing the CURSOR MODE button, press the power 1/u button to turn on the main power. The message MU
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