NAD-S170-avr-sm维修电路原理图.pdf

SERVICE MANUALS170 S170 A/V SURROUND SOUND PREAMPLIFIER A/V SURROUND SOUND PREAMPLIFIER RadioFans.CN 收音机爱 好者资料库 PRODUCT SAFETY SERVICING GUIDELINES CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURERS APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANY RESULTING PROPERTY DAMAGE OR USER INJURY. SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERVICING GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDS AND INJURY TO THE USER. WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION FROM AC LINE SHOCK. SAFETY CHECKS AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED. A CHECK SHOULD BE MADE OF THE FOLLOWING. SUBJECT : FIRE CONNECT A 1500 OHM 10 WATT RESISTOR, PARALLELED BY A .15 MFD, 150V AC TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CONDUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE THE AC VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE AC PLUG AND REPEAT AC VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURE MUST NOT EXCEED 75 VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP AC ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY. SUBJECT : GRAPHIC SYMBOLS SUBJECT : TIPS ON PROPER INSTALLATION 1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBYHOLE OR CLOSELY FITTING SHELF SPACE. OVER OR CLOSE TO HEAT DUCT, OR IN THE PATH OF HEATED AIR FLOW. 2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO INSTALLATIONS WHERE DEW IS A FACTOR, NEAR STEAM RADIATORS WHERE STEAM LEAKAGE IS A FACTOR, ETC. 3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DECORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION. 4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMERCAL MOUNTING KIT MUST FOLLOW THE FACTORY APPROVED MOUNTING INSTRUCTIONS A PRODUCT MOUNTED TO A SHELF OR PLATFORM MUST RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN SPACERS) TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM, BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS. 5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS PROPERLY SECURED. 6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNTING TO THE CART. CAUTION THE CUSTOMER ON THE HAZARDS OF TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPETS. 7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES, INC. FOR USE WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE WITH T.V.S OF THE SAME OR LARGER SCREEN SIZE. 8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS, EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SINGLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY. THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE USER TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” WITHIN THE PRODUCTS ENCLOSURE THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE USER TO THE PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE (SERVICING) INSTRUCTIONS IN THE LITERATURE ACCOMPANYING THE APPLIANCE. RadioFans.CN 收音机爱 好者资料库 SERVICING PRECAUTIONS CAUTION : Before servicing the A/V Receiver covered by this service data and its supplements and addends, read and follow the SAFETY PRECAUTIONS. NOTE : if unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions in this publication, always follow the safety precautions. Remember Safety First: General Servicing Precautions 1. Always unplug the A/V Receiver AC power cord from the AC power source before: (1) Removing or reinstalling any component, circuit board, module, or any other assembly. (2) Disconnecting or reconnecting any internal electrical plug or other electrical connection. (3) Connecting a test substitute in parallel with an electrolytic capacitor. Caution : A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. 2. Do not spray chemicals on or near this A/V Receiver or any of its assemblies. 3. Unless specified otherwise in this service data, clean electrical contacts by applying an appropriate contact cleaning solution to the contacts with a pipe cleaner, cottontipped swab, or comparable soft applicator. Unless specified otherwise in this service data, lubrication of contacts is not required. 4. Do not defeat any plug/socket B+ voltage interlocks with which instruments covered by this service manual might be equipped. 5. Do not apply AC power to this A/V Receiver and/or any of its electrical assemblies unless all solid-state device heat sinks are correctly installed. 6. Always connect test instrument ground lead to the appropriate ground before connecting the test instrument positive lead. Always remove the test instrument ground lead last. Insulation Checking Procedure Disconnect the attachment plug from the AC outlet and turn the power on. Connect an insulation resistance meter(500V) to the blades of the attachment plug. The insulation resistance between each blade of the attachment plug and accessible conductive parts (Note 1) should be more than 1M-ohm. Note 1 : Accessible Conductive Parts including Metal panels, Input terminals, Earphone jacks, etc. Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical Es devices are integrated circuits and some field effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an antistatic solder removal device. Some solder removal devices not classified a “anti-static” can generate electrical charges sufficient to damage ES devices. 5. Do not use freonpropelled chemicals. These can generate electrical charge sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil, or comparable conductive material). 7. lmmediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. Caution : Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handing unpackaged replacement ES devices. (Normally harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity sufficient to damage an ES device.) RadioFans.CN 收音机爱 好者资料库 CONTENTS FRONT PANEL / REAR PANEL VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10 SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-25 ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-35 EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 EXPLODED VIEW PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx PACKING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 SERVICE SAFETY PRECAUTIONS 1. Replacing the Fuses CAUTION: FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE REPLACE ONLY WITH SAME TYPE OF FUSE. REFERENCE NO.PART NUMBERDESCRIPTION FUSE1*C 1.6A 250V Time Lag FUSE2*C 1A 250V Time Lag FUSE3*C 2A 250V Time Lag NOTE: *C : European version only 2. Safety-check out Before returning the product to the customer, make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit. Parts marked with the symbol are critical with regard to the risk of fire and electric shock. Replace only with parts recommended by the manufacturer. 5120-0050-0 5100-1020-1B 5120-0065-0 ! ! ! ! RadioFans.CN 收音机爱 好者资料库 181413101516 135648 9 1 2 3 4 5 6 4 OUT 5 OUT 6 OUT MON OUT VIDEO 1VIDEO 2VIDEO 3VIDEO 4VIDEO 5VIDEO 6 AUDIO INPUT CDAUXTUNER MULTI SOURCE OUT TAPE MONITOR L L IN ININ OUT OUTOUT EXTERNAL 7.1 OUTPUTSEXTERNAL 5.1 INPUTS 12V TRIGGERS OUT RS 232 DIGITAL 4 DIG OUTDIGITAL 1 DIGITAL 2DIGITAL 3 COMPONENT VIDEO CbCr LEFT B (mono)LS LS Y NAD LINK OUT OPTICAL IN 1OPTICAL IN 2 OPTICAL OUT CENTERCENTERFRONT LFRONT L ININ S VIDEO 4 INS VIDEO 6 IN S VID 5 OUTMONITOR OUTS VIDEO 2 IN S VIDEO 5 IN S VID 4 OUT S VID 6 OUT S VID 3 IN S VID 1 IN VIDEO 4VIDEO 5VIDEO 6 AC MAINS INPUT VIDEO INPUT L L R R RPLAYRECORDRIGHT BRS RS FRONT RFRONT RSUBSUBAUDIO OUT 132 27 171112 1317 14 1112 A/V Surround Sound Preamplifier S170NAD TONEMULTI SOURCEBRIGHTNESSLEVELSTAPE MONITOR 234859610 AUDIOMODESPEAKERSDELAYVIDEO VOLUME (SET UP)VOLUME (SET UP) The graphic symbol of a lightning flash with an arrow point within a triangle signifies that there is dangerous voltage within the unit and it posses a hazard to anyone removing the cover to gain access to the interior of the unit. Only qualified service personnel should make such attempt. The graphic symbol of an exclamation point within an equilateral triangle warns a user of the device that it is necessary to refer to the instruction manual and its warnings for proper operation of the unit. 1. POWER SWITCH6. MULTI SOURCE11. TONE 2. POWER INDICATOR7. SPEAKERS12. MODE 3. AUDIO INPUT SELECTOR8. DELAY13. VOLUME/SETUP CONTROL 4. VIDEO INPUT SELECTOR9. LEVELS14. DISPLAY 5. TAPE MONITOR10. BRIGHTNESS 1. VIDEO INPUTS7. COAXIAL DIGITAL INPUTS/OUTPUT13. TAPE INPUT/OUTPUT 2. VIDEO OUTPUTS8. OPTICAL DIGITAL INPUTS/OUTPUT14. MULTI SOURCE OUTPUT 3. S-VIDEO INPUTS9. RS-23215. EXT. 7.1 OUTPUTS 4. S-VIDEO OUTPUTS10. AUDIO INPUTS16. EXT. 5.1 INPUTS 5. COMPONENT VIDEO INPUTS/OUTPUTS11. AUDIO OUTPUTS17. 12V TRIGGET OUTPUTS 6. NAD LINK INPUT/OUTPUT12. CD/AUX/TUNER INPUTS18. AC INLET REAR PANEL CONNECTIONS FRONT PANEL CONTROLS RadioFans.CN 收音机爱 好者资料库 NL E VIDEO BOARD MAIN BOARD DECODER BOARD VFL ENCODER FRONT PANEL BOARD SWITCHING POWER SUPPLY POWER SWITCH BOARD AC INLET CHASSIS A B C +15V AGND -15V +5VD DGND +15V GND -15V +5VD EARTH NEUTRAL LIVE X26 1 X27 X24 1 X19 1 1 1 1 X30 1 X16 1 X14 1 1 X11 X13 S-3 1 CN1 S-1 S-2 1 P2A P1A WIRING DIAGRAM BNC CONNECTOR BROWN BROWN BLUE YEL-GRN YEL-GRN GRAY GREEN YELLOW GREEN RED RED BLACK 20-PIN RIBBON 8-PIN RIBBON 20-PIN RIBBON 20-PIN RIBBON RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS STANDARD SETTINGSSURROUND BACK LEFT 1 - PAL/NTSC R285 10k R210 4k7 +5D 3 2 1 84 IC26A LM393M +5D C176 100nF Unused OSD_MOSI OSD_SCLK OSD_CS OSD_Y_IN OSD_Y_UNBUF OSD YOUT 1 VIDEO IN 2 RES 3 FTR 4 AVdd 5 DVdd 6 CSYNC 7 XTAL IN 8 XTAL OUT 9 MUTE 10 DATA 11 CLK 12 CSN 13 R 14 YIN 28 VIDEO OUT1 27 VIDEO OUT2 26 CIN 25 COUT 24 LESCREEN 23 LECHAR 22 AGND 21 DGND 20 BAR 19 CO 18 FB 17 B 16 G 15 IC24A STV5730A-SO C132 100nF C133 100uF R277Not installed R2760R R233 0R R173 5k6 R182 22k C139 220pF C134 22nF R283 4k7 +5A +5A +5D C129 100nF R177 5k6 R278 3k3 R178 5k6 R281 2k2 C149 2u2 OSD_C_OUT R279 Not installed R280 Not installed +5A C131 100nF C232 100nF C236 100nF OSD_CHROMAMAX_NC +5A XILINX_2 C141 2u2 R137 470k VREF C242 1nF D47 OSD_FB R263 330k +5A R275 Not installed C142 100nF VREF Chroma attenuator 1 5 3 4 6 2 IN COM Vcc NO NC GND IC37 MAX4599 D56 -5A -5A VREF RadioFans.CN 收音机爱 好者资料库 411 SVideo Main, Secondary, Front Panel PCBs, not including Gen6 A367 RadioFans.CN 收音机爱 好者资料库 2727 3535 3232 3131 3434 2828 A/V Surround Sound Preamplifier S170NAD TONEMULTI SOURCEBRIGHTNESSLEVELSTAPE MONITORAUDIOMODESPEAKERSDELAYVIDEO VOLUME (SET UP) 2626 2626 3333 3030 ITEMPART NUMBERDESCRIPTIONQTY. 268700.0062CUSHION2 278700.0057WRAPPING SHEET1 28862004INNER CARTON BOX1 29862005OUTER CARTON BOX1 30S70REMOTE CONTROL W/ BATTERY1 SET 318120.0189WARRANTY CARD1 334150.002212V TRIGGER CABLE1 34*AH4150.0025POWER CORD 120V1 34*C4150.0024POWER CORD 230V1 358700.0056GLOVES1 PAIR 32S170-IMOWNERS MANUAL1 PACKING DIAGRAM NADSilverLine Control S70 System Remote CONTROL REMOTOCONTROL REMOTO FERNBEDIENUNGFERNBEDIENUNG REMOTE CONTROLREMOTE CONTROL LA TELECOMMANDELA TELECOMMANDE FJARRKONTROLLFJARRKONTROLL TELECOMANDOTELECOMANDO DESIGNED AND ENGINEERED BY NAD ELECTRONICS INTERNATIONALDESIGNED AND ENGINEERED BY NAD ELECTRONICS INTERNATIONAL NADSilverLine Control S70 System Remote CONTROL REMOTOCONTROL REMOTO FERNBEDIENUNGFERNBEDIENUNG REMOTE CONTROLREMOTE CONTROL LA TELECOMMANDELA TELECOMMANDE FJARRKONTROLLFJARRKONTROLL TELECOMANDOTELECOMANDO DESIGNED AND ENGINEERED BY NAD ELECTRONICS INTERNATIONALDESIGNED AND ENGINEERED BY NAD ELECTRONICS INTERNATIONAL NADSilverLine Control S70 System Remote CONTROL REMOTOCONTROL REMOTO FERNBEDIENUNGFERNBEDIENUNG REMOTE CONTROLREMOTE CONTROL LA TELECOMMANDELA TELECOMMANDE FJARRKONTROLLFJARRKONTROLL TELECOMANDOTELECOMANDO DESIGNED AND ENGINEERED BY NAD ELECTRONICS INTERNATIONALDESIGNED AND ENGINEERED BY NAD ELECTRONICS INTERNATIONAL FRAGIL