NAD-VisoFive-ssr-sm 电路图 维修手册.pdf

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1、? ? ? ? ? Before SN A99VISOFIVE04701 RadioFans.CN 收音机爱 好者资料库 1-3 SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES. 1-4 SERVICING PRECAUTIONS . 1-5 * General Servicing Precautions * Insulation checking prodedure * Electrostatically Sensitive Devices SPECIFICATIONS . 1-6 DISASSEMBLY . 1-

2、7 PRINCIPAL PART LOCATION. 1-8 EXPLODED VIEW . 1-9 RadioFans.CN 收音机爱 好者资料库 1-4 PRODUCT SAFETY SERVICING GUIDELINES CAUTION : DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. NEVER PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURER S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE WAR

3、RANTY, BUT MAY LEAD TO YOUR BEING LIABLE FOR ANY RESULTING PROPERTY DAMAGE OR USER INJ URY. 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 INJ URY T

4、O 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 CAPACIT

5、OR 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 MEA

6、SURE 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, CUBBYHOL

7、E 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

8、 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

9、 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 SLOPIN

10、G 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 T

11、HE 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 FORES

12、T 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 PRODUCT S ENCLOSURE THAT MAY B

13、E 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 1

14、-5 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

15、 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) Disconnecti

16、ng 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 ex plosion hazard. 2. Do not

17、 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 sp

18、ecified 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 un

19、less 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 plu

20、g 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

21、 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. Ex amples of typical Es devices

22、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 ass

23、embly, 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 el

24、ectrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or ex posure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an antistatic solder removal dev

25、ice. 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

26、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 replaceme

27、nt 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

28、. (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.) 1-6 SPECIFICATIONS Amplifier Section Output Power (Front) : F.T.C Rating: 60 watts RMS per channel mi

29、nimum, both channels driven into 8 ohms from 20 Hz to 20kHz with no more than 0.09% total harmonic distortion Surround Output Power (0.5% THD, 1 kHz, 8 ohms) : 50 + 50 Watt (Front) 50 Watt (Center) 50 + 50 Watt (Rear) Total Harmonic Distortion (Front) : 0.05 % (at 30 watts, 1 kHz) Delay Time : DOLBY

30、 DIGITAL : REAR : 0 - 15 ms CENTER : 0 - 5 ms DOLBY PRO LOGIC : REAR : 15 - 30 ms Audio Input Sensitivity/ Impedance : *LINE : 320 mV/ 47 k ohms Output Level / Impedance : VCR REC : 300 mV/ 2.2 k ohms Frequency Response : *LINE : 10 Hz - 60 kHz, +1/ -3 dB Signal-to-Noise Ratio : 1 Watt *LINE : 70 dB

31、 (IHF-A) Tone Control : BASS : 10 dB at 100 Hz TREBLE : 10 dB at 10 kHz Digital Audio Section Sampling Frequency : 32 kHz, 44.1 kHz, 48 kHz, 96 kHz DIGITAL Input Level/ Impedance COAXIAL : 0.5 Vp-p/ 75 ohms OPTICAL : -15 dBm -21 dBm Video Section Input Sensitivity / Impedance : 1.0 Vp-p/ 75 ohms Out

32、put Level / Impedance : 1.0 Vp-p/ 75 ohms *LINE means CAB/SAT , VCR(IPOD) , FRONT Improvements may result in specifications and features changing without notice. lllustrations may differ slightly from production models. FM Tuner Section (Without notes 100.1 MHz, 65 dBf) Tuning Range : 87.5 MHz - 108

33、.0 MHz C: 50 kHz steps AH: 100 kHz steps AM Suppression Ratio: C: 50 dB AH: 60 dB Total Harmonic Distortion (1 kHz) : Mono : 0.4% Stereo : 0.5% Frequency Respones : 20 Hz - 15 kHz, +1/ -1. 5 dB Stereo Separation (1 kHz) : C: 40 dB AH: 35 dB Signal-to-Noise Ratio : Mono : 70 dB Stereo : 65 dB AM Tune

34、r Section Tuning Range: C : 522 kHz - 1,620 kHz (9 kHz steps) AH : 520 kHz - 1,710 kHz (10 kHz steps) Usable Sensitivity : 55 dB/ m Total Harmonic Distortion : 0.1% at 85 dB/ m Signal-to-Noise Ratio : 40 dB at 85 dB/ m General Power Requirements : C : 230V AC, 50Hz AH : 120V AC, 60Hz Power Consumpti

35、on : C: 1.3A AH: 2.5A AC Outlets : unswitched x 1, Total 100 W max . (1A) Dimensions (W x H x D) : 435 x 133 x 375 Weight (net) : 11.8kg a b EXPLODED VIEW (AH VERSION) 1-91-10 CMYL77 CIP11958CSMD 1-11 New Part Numbers Non-1W Versions COP11955B-A VISO FIVE FRONT AUTO PCB assembly NON-1W version COP11

36、957B VISO FIVE MAIN AUDIO S=i) I2S_SCLK (M=o; S=i) I2S_DATA (M=o; S=i) I2S_RATE (M=o, S=n/u) MUTE (M=o, S=n/u) HSDP_EN# (M=o; S=i) HSDP_CLK (M=o; S=i) HSDP_DATA (M=o; S=i) LSDP (M=o; S=i) SAII_REQ (M=i; S=o) SAII_CLK (M=o; S=i) SAII_DATA (M=o; S=i) SC_RX_IN (M=i, S=i) SC_TX_OUT (M=o, S=o) SC_RATE (M

37、=i, S=o) COMM_TX_M OSC_OUT RAM COMM_TX_EN (M=o, S=o) LINKACTIVE (M=o, S=o) COMM_RX_M OSC_IN OSC COMM I/F XMDTIC COMM_TX_P COMM_RX_P RESET# (M=i, S=i) ANT_REV (M=o, S=n/u) DT4_MODE (M=i, S=i) SLAVE_SEL (M=i, S=i) TEST (M=i, S=i) (RFU I2C_SCL) (RFU I2C_SDA) Misc Status S/T = Sc hmitt Trigger inputs; S

38、LC = Slew Rate Controller Output 2-2 0 PIN CONFIGURATION VSS DQ15 DQ14 VSSQ DQ13 DQ12 VDDQ DQ11 DQ10 VSSQ DQ9 DQ8 VDDQ NC UDQM CLK CKE NC A9 A8 A7 A6 A5 A4 VSS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 VDD D

39、Q0 DQ1 VSSQ DQ2 DQ3 VDDQ DQ4 DQ5 VSSQ DQ6 VDDQ / WE / CAS / RAS / CS A11 A10 A0 A1 A2 A3 VDD 50 p i n TSOP II 40 0 mi l x 8 25mi l 0 .8 mm p i n p i tc h 27 26 DQ7 LDQM VSS DQ15 DQ14 VSSQ DQ13 DQ12 VDDQ DQ11 DQ10 VSSQ DQ9 DQ8 VDDQ NC UDQM CLK CKE NC A9 A8 A7 A6 A5 A4 VSS 1 2 3 4 5 6 7 8 9 10 11 12 1

40、3 14 15 16 17 18 19 20 21 22 23 24 25 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 VDD DQ0 DQ1 VSSQ DQ2 DQ3 VDDQ DQ4 DQ5 VSSQ DQ6 VDDQ / WE / CAS / RAS / CS A11 A10 A0 A1 A2 A3 VDD 50 p i n TSOP II 40 0 mi l x 8 25mi l 0 .8 mm p i n p i tc h 27 26 DQ7 LDQM PIN DESCRIPTION PIN

41、PIN NAMEDESCRIPTION CLKCloc k The system c loc k i nput. All other i nputs are referenc ed to the SDRAM on the ri si ng edge of CLK. CKECloc k Enable Controls i nternal c loc k si gnal and when deac ti v ated, the SDRAM wi ll be one of the states among power down, suspend or self refresh. CSChi p Se

42、lec tCommand i nput enable or mask exc ept CLK, CKE and DQM BABank AddressSelec t ei ther one of banks duri ng both RAS and CAS ac ti v i ty. A0 A10Address Row Address : RA0 RA10, Column Address : CA0 CA7 Auto- prec harge flag : A10 RAS, CAS, WE Row Address Strobe, Column Address Strobe, Wri te Enab

43、le RAS, CAS and WE defi ne the operati on. Refer func ti on truth table for detai ls LDQM, UDQMData Input/ Output MaskDQM c ontrol output buffer i n read mode and mask i nput data i n wri te mode DQ0 DQ15Data Input/ OutputMulti plexed data i nput / output pi n VDD/ VSSPower Supply/ GroundPower suppl

44、y for i nternal c i rc ui t and i nput buffer VDDQ/ VSSQData Output Power/ GroundPower supply for DQ NCNo Connec ti onNo c onnec ti on SD RAM : IC47 2-2 1 FUNCTIONAL BLOCK DIAGRAM 1Mx16 Sync hronous DRAM Column Addr. Latc h & Counter Burst Length Counter Refresh Interv al Ti mer Refresh Counter DQ0

45、DQ1 DQ2 DQ3 DQ4 DQ5 DQ6 DQ7 DQ8 DQ9 DQ10 DQ11 DQ12 DQ13 DQ14 DQ15 Address Regi ster I/ O ControlTest ModeMode Regi ster Self Refresh Counter Column Dec oder Sense AMP & I/ O gates 512Kx16 Bank 0 Column Dec oder Sense AMP & I/ O gates 512Kx16 Bank 1 RAS CAS CS WE UDQM LDQM CKE Prec harge Ov erflow Co

46、lumn Ac ti v e Row Ac ti v e Address0: 10 CLK BA( A11) State Mac hi ne Ro w Dec oder Row Addr. Latc h/ Predec oder Auto/ Self Refresh Ref. Addr.0: 11 Data Input/ Output Buffers Row Addr. Latc h/ Predec oder 2-2 2 PIN ASSIGNMENT Top Vi ew 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

47、 25 26 27 VDD DQ0 VDDQ DQ1 DQ2 VSSQ DQ3 DQ4 VDDQ DQ5 DQ6 VSSQ DQ7 VDD LDQM WE CAS RAS CS A13 A12 A10/ AP A0 A1 A2 A3 VDD 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 VSS DQ15 VSSQ DQ14 DQ13 VDDQ DQ12 DQ11 VSSQ DQ10 DQ9 VDDQ DQ8 VSS NC UDQM CLK CKE NC A11 A9 A8 A7 A6 A5 A4 VSS FUNCTIONAL BLOCK DIAGRAM P