Sony sa wms 367 service manual
This is the 16 pages manual for sony sa wms 367 service manual.
Read or download the pdf for free. If you want to contribute, please upload pdfs to audioservicemanuals.wetransfer.com.
Extracted text from sony sa wms 367 service manual (Ocr-read)
Page 1
2 1.5 k Ω 0.15 µF AC voltmete r (0.75 V) To Exposed Metal Parts on Set Earth Ground SAFETY CHECK-OUT After correcting the original service problem, perform the follow- ing safety check before releasing the set to the customer: Check the antenna terminals, metal trim, metallized knobs, screws, and all other exposed metal parts for AC leakage. Check leakage as described below. LEAKAGE TEST 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.). 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 job. 3. Measuring the voltage drop across a resistor by means of a VOM or battery-operated AC voltmeter. The limit indica- tion is 0.75 V, so analog meters must have an accurate low- voltage scale. The Simpson 250 and Sanwa SH-63Trd are ex- amples of a passive VOM that is suitable. Nearly all battery operated digital multimeters that have a 2 V AC range are suit- able. (See Fig. A) SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS 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.ATTENTION AU COMPOSANT AYANT RAPPORT À LA SÉCURITÉ!! LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY. TABLE OF CONTENTS 1. GENERAL Location of Controls ................................................................ 3 2. DIAGRAMS 2-1. Note for Printed Wiring Boards and Schematic Diagrams ............................................................ 3 2-2. Circuit Boards Location ...................................................... 3 2-3. Printed Wiring Boards – Main Section – ............................ 4 2-4. Schematic Diagram – Main Section – ................................. 5 2-5. Printed Wiring Boards – Control Section – ......................... 6 2-6. Schematic Diagram – Control Section – ............................. 7 2-7. IC Block Diagram ............................................................... 8 3. EXPLODED VIEWS 3-1. Front Section ....................................................................... 9 3-2. Rear Section ...................................................................... 10 4. ELECTRICAL PARTS LIST ......................................... 11 SA-WMS367 - UNLEADED SOLDER Boards requiring use of unleaded solder are printed with the lead- free mark (LF) indicating the solder contains no lead. (Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.) : LEAD FREE MARK Unleaded solder has the following characteristics. -Unleaded solder melts at a temperature about 40°C higher than ordinary solder. Ordinary soldering irons can be used but the iron tip has to be applied to the solder joint for a slightly longer time. Soldering irons using a temperature regulator should be set to about 350°C. Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful! -Strong viscosity Unleaded solder is more viscous (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges occur such as on IC pins, etc. -Usable with ordinary solder It is best to use only unleaded solder but unleaded solder may also be added to ordinary solder. (Fig. A)
Page 2
33 SA-WMS367 2-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS 2-2. CIRCUIT BOARDS LOCATION SECTION 2 DIAGRAMS SECTION 1 GENERAL LOCATION OF CONTROL This section is extracted from instruction manual. eE Ee Ee Ee Ee Ee Ee Ee WOOFER OUTSURROUND BACK FRONT SURROUND R RL L Ee Ee eE EeL CENTER A Front (Right) Center Subwoofer Front (Left) Surround (Right) Surround (Left)Amplifier 3.5 m (11.5 ft.) 10 m (32.8 ft.) 10 m (32.8 ft.)3.5 m (11.5 ft.)3.5 m (11.5 ft.) Ee Ee C E e E e B RL RL Ee Ee SPEAKER IN SPEAKER OUT e e E E eE Ee EeFRONT CENTER R RL L eE EeRL Ee Ee Ee Ee Ee SURROUND SURROUND BACK Front (Left) Center Front (Right) Subwoofer Amplifier Surround (Left) Surround (Right) 10m (32.8 ft.)10m (32.8 ft.) 2.5m (8.2 ft.) 2.5m (8.2 ft.) D AA A 30 30 100 ~ 120 100 ~ 120 Front (Right) Center Subwoofer Surround (Right) Front (Left) Surround (Left) Foot pads E HG F J Foot pads WS-FV11 I 3.5 m (11.5 ft.)3.5 m (11.5 ft.)3.5 m (11.5 ft.) WS-WV10D (for surround speakers) Surround back (Right)Surround back (Left)Surround back (Right)Surround back (Left) Surround back (Left)Surround back (Right) POWER SAVE AUTO OFF K POWER POWER indicator POWER INPUT VOLUME BASS BOOSTMAX MIN MAX PHASEREVERSENORMALAUTOPOWER SAVEOFF MIN ++ VOLUME BASS BOOST PHASE INPUT INPUT Hooking up the system Connect the speaker system to the speaker output terminals of an amplifier. Make sure power to all components (included the subwoofer) is turned off before starting the hook-up. HookupAUsually, connect by this method. This configuration is used when the amplifier is connected to a DVD player, LD player, VCR or other video devices. HookupBTry this configuration instead of HookupA when there are no jacks on the amplifier for a subwoofer. An optional specified speaker cord (2.5 m × 2)(8.2 ft. × 2) is necessary when connecting this way. Notes (C)-Make sure the plus (+) and the minus (–) terminals on the speakers are matched to the corresponding plus (+) and minus (–) terminals on the amplifier. -Be sure to tighten the screws of the speaker terminals securely as loose screws may become a source of noise. -Make sure all connections are firm. Contact between bare speaker wires at the speaker terminals may cause a short-circuit. -For details regarding the connections on the amplifier side, refer to the manual that was provided with your amplifier. TipBlack or black striped wires are minus (–) in polarity, and should be connected to the minus (–) speaker terminals. About this manual The SA-VE367T is a 7.1 channel speaker system consisting of two front speakers, two surround speakers, two surround back speakers, one center speaker, and one subwoofer. It supports Sony Digital Cinema Sound, Dolby* Pro Logic, and Dolby Digital etc., and is thus geared towards the enjoyment of movies. *Dolby and the double-D symbol are trademarks of Dolby Laboratories. Precautions On safety-Before operating the system, be sure that the operating voltage of the system is identical with that of your local power supply. -The unit is not disconnected from the AC power source (mains) as long as it is connected to the wall outlet, even if the unit itself has been turned off. -Unplug the system from the wall outlet if it is not to be used for an extended period of time. To disconnect the cord, pull the cord by grasping the plug. Never pull the cord itself. -Should any liquid or solid object fall into the system, unplug the systems power cord and have the system checked by qualified personnel before operating it any further. -AC power cord must be changed only at the qualified service shop. On operation-Do not drive the speaker system with a continuous wattage exceeding the maximum input power of the system. -If the polarity of the speaker connections are not correct, the bass tones will be weak and the position of the various instruments obscure. -Contact between bare speaker wires at the speaker terminals may result in a short-circuit. -Before connecting, turn off the amplifier to avoid damaging the speaker system. -The speaker grille cannot be removed. Do not attempt to remove the grille on the speaker system. If you try to remove it, you may damage the speaker. - The volume level should not be turned up to the point of distortion. If you encounter color irregularity on a nearby TV screen This speaker system is magnetically shielded to allow it to be installed near a TV set. However, color irregularities may still be observed on certain types of TV sets. If color irregularity is observed...cTurn off the TV set, then turn it on again after 15 to 30 minutes. If color irregularity is observed again...cPlace the speakers further away from the TV set. If howling occursReposition the speakers or turn down the volume on the amplifier. On placement-Do not set the speakers in an inclined position. -Do not place the speakers in locations that are: -Extremely hot or cold -Dusty or dirty -Very humid -Subject to vibrations -Subject to direct sunlight -Use caution when placing the speaker on a specially treated (waxed, oiled, polished, etc.) floor, as staining or discoloration may result. On cleaningClean the speaker cabinets with a soft cloth lightly moistened with a mild detergent solution or water. Do not use any type of abrasive pad, scouring powder or solvent such as alcohol or benzine. If you have any questions or problems concerning your speaker system, please consult your nearest Sony dealer. Adjusting the subwoofer (K) 1Rotate VOLUME to adjust the volume.Set the volume level to best suit your preference according to the program source. 2Select the phase polarity.Use the PHASE selector to select the phase polarity. 3Set BASS-BOOST to MIN.Rotate BASS-BOOST according to the output level that you prefer. Some material is recorded with strong emphasis on bass sounds, which may be accessive in some cases. If this happens, rotate BASS- BOOST towards minimum. Notes-Some amplifier functions for enhancing the sound may cause distortion in the subwoofer. If such distortion occurs, turn off those functions. -To enjoy high-quality sound, do not turn the subwoofer volume too high. -If the sound distorts when you turn on the bass reinforcement from your amplifier (such as DBFB, GROOVE, the graphic equalizer, etc.), turn down the bass reinforcement and adjust the level. -Do not turn the LEVEL knob to maximum. Doing so may weaken the bass sound. Moreover, extraneous noise may be heard. -Selecting NORMAL or REVERSE with the PHASE selector reverses the polarity and may provide better bass reproduction in certain listening environments (depending on the type of front speakers, the position of the subwoofer and the adjustment of the BASS- BOOST. It may also change the expansion and tightness of sound, and effect the feeling of the sound field. Select the setting that provides the sound you prefer when listening in your normal listening position. Troubleshooting Should you encounter a problem with your speaker system, check the following list and take the indicated measures. If the problem persists, consult your nearest Sony dealer. There is no sound from the speaker system. -Make sure all the connections have been correctly made. -Make sure the volume on the amplifier has been turned up properly. -Make sure the program source selector on the amplifier is set to the proper source. -Check if headphones are connected. If they are, disconnect them. There is distortion in the subwoofer sound output. -Check if any sound-enhancing functions have been activated on the amplifier. If they have, turn them off. There is hum or noise in the speaker output. -Make sure all the connections have been correctly made. -Make sure none of the audio components are positioned too close to the TV set. The sound has suddenly stopped. -Make sure all the connections have been correctly made. Contact between bare speaker wires at the speaker terminals may cause a short-circuit. Positioning the speakers Location of each speaker (D)Each speaker should face the listening position. Better surround effect will result if all speakers are set at the same distance from the listening position. Place the front speakers at a suitable distance to the left and right of the television. Place the subwoofer on either side of the television. Place the center speaker on the top-center of the TV set. The placement of surround speakers greatly depends on the configuration of the room. The surround speakers may be placed slightly behind the listening position. Place the surround back speakers behind the listening position. The angle A should be the same. Setting the speakersTo prevent speaker vibration or movement while listening, attach the supplied foot pads to the bottom four corners of the center speaker, front speakers, surround speakers and surround back speakers ( E). Setting the center speaker (F)Set the center speaker firmly on top of the TV set, making sure it is completely level. Setting other speakers (G)For greater flexibility in the positioning of the speakers, use the optional WS-FV11 or WS-WV10D speaker stand (available only in certain countries). TipThe height of the front speakers should be adjusted to about the center of the TV screen ( H). Setting the amplifier When connecting to an amplifier with internal multi channel decoders (Dolby Digital, DTS**, etc.), you should use the setup menus for the amplifier to specify the parameters of your speaker system. See the table below for the proper settings. For details on the setting procedure, refer to the manual that was provided with your amplifier. When Hookup A is used (Speaker setup) For Set toFront speakers SMALLCenter speaker SMALLSurround speakers SMALLSubwoofer ON (or YES)When Hookup B is used (Speaker setup) For Set toFront speakers LARGECenter speaker SMALLSurround speakers SMALLSubwoofer OFF (or NO) If you use the amplifier with adjustable crossover frequency, it is recommended to select 150 Hz (or close to this figure) as the crossover frequency for your front, center, and surround speakers. ** DTS and DTS Digital Surround are registered trademarks of Digital Theater Systems, Inc. Listening to the sound ( I) First, turn down the volume on the amplifier. The volume should be set to minimum before you begin playing the program source. 1Turn on the amplifier and select the program source. 2Press POWER on the subwoofer.The POWER indicator on the subwoofer lights up green. 3Play the program source. Power turns on and off automatically - Auto power on/off function (J) When the subwoofer is on (i.e, the POWER indicator lights up green) and there is no signal input for a few minutes, the POWER indicator changes to red and the subwoofer enters power saving mode. While in this mode a signal is input to the subwoofer, the subwoofer automatically turns on (auto power on/off function). To turn this feature off, slide the POWER SAVE switch on the rear panel to OFF. NoteIf you turn down the volume level of the amplifier too low, the auto power on/off function may activate, causing the subwoofer to enter power saving mode. MAIN boardTERMINAL board CONTROL board POWER SUPPLY boar d POWER AMP board POWER SWITCH board THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS. (In addition to this, the necessary note is printed in each block.) For schematic diagrams. Note: -All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. -All resistors are in Ω and 1/4 W or less unless otherwise specified. - f : internal component. -C: panel designation. For printed wiring boards.Note: -X: parts extracted from the component side. -Y: parts extracted from the conductor side. - : Pattern from the side which enables seeing. -Abbreviation CND : Canadian model. -A: B+ Line. -B: B– Line. -Voltages are dc with respect to ground under no-signal (detuned) conditions. no mark : Power on -Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal produc- tion tolerances. -Signal path. F: AUDIO -Abbreviation CND : Canadian model. Note: The components identi- fied by mark 0 or dotted line with mark 0 are criti- cal for safety. Replace only with part number specified.Note: Les composants identifiés par une marque 0 sont critiques pour la sécurité. Ne les remplacer que par une piéce portant le numéro spécifié.