NAD-T535-cd-sm 电路图 维修手册.pdf

《NAD-T535-cd-sm 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《NAD-T535-cd-sm 电路图 维修手册.pdf（101页珍藏版）》请在收音机爱好者资料库上搜索。

1、SERVICE MANUAL T535 DVD / SACD Player RadioFans.CN 收音机爱 好者资料库 1-1 SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES. 1-2 SERVICING PRECAUTIONS . 1-3 * General Servicing Precautions * Insulation checking prodedure * Electrostatically Sensitive Devices SPECIFICATIONS . 1-4 DISASSEMBLY . 1

2、-5 PRINCIPAL PART LOCATION . 1-6 EXPLODED VIEW (C) . 1-7 EXPLODED VIEW (AH). 1-10 RadioFans.CN 收音机爱 好者资料库 1-2 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 WARRANTY

3、, 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 U

4、SER. 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 BETW

5、EEN 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 MU

6、ST 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 CL

7、OSELY 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 V

8、ENTING. 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

9、 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

10、 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

11、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 EX

12、TENSIONS 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 BE OF S

13、UFFICIENT 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. PRODUCT SAFETY SERVICING GUIDEL

14、INES RadioFans.CN 收音机爱 好者资料库 1-3 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

15、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 oth

16、er 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

17、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

18、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 e

19、lectrical 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 Discon

20、nect 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 : Acce

21、ssible 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

22、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 semi

23、conductor-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

24、. 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 antistat

25、ic 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 devic

26、e 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 th

27、e 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

28、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.) 1-4 SPECIFICATIONS SYSTEM Signal system PAL/NTSC Laser Two wavelength laser dio

29、de CD Wavelength 790nm DVD Wavelength 650nm Frequency response -1dB (Ref. 20Hz-44KHz, DVD) -3dB (Ref. 20Hz-50KHz, SACD) Signal-to-noise ratio (audio) 95dBA (A-WTD) Dynamic range (audio) 90dBA (A-WTD) Total Harmonic Distortion 0.002% OUTPUT Video out 1Vp-p/75 ohms S-video (Y signal) 1Vp-p/75 ohms S-v

30、ideo (C signal) 0.286Vp-p/75 ohms Component (Y signal) 1Vp-p/75 ohms (North American version only) Component (Cb/Cr signal) 0.7Vp-p/75 ohms (North American version only) SCART (RGB signal) 0.7Vp-p/75 ohms (European version only) HDMI Video Out HDCP 480p/720p/1080i/1080p (NTSC) HDCP 576p/720p/1080i/1

31、080p (PAL) Digital Out (coaxial) 500mVp-p Digital Out (optical) 3Vp-p Digital Out (HDMI) 5 .1-channel 48KHz PCM/Bitstream (DVD-Video) 5.1-channel 96KHz PCM/Bitstream (DVD-Audio) Audio Out 2.0 Vrms (Ref. 1 KHz, 0 dB) GENERAL Power requirements AC 120 V, 60 Hz NTSC Region 1 AC 230 V, 50 Hz PAL Region

32、2 Power consumption 21W Dimensions (W x H x D) 435 x 290 x 85 mm Net weight 3.9kg Shipping weight 5.8kg Manufactured under license under U.S. Patent # s: 5,451,942; 5,956,674; 5,974,380; 5,978,762; 6,487,535 in HD Only Mode and Simultaneous HD/SD Mode: Y/Green HD Analog Output. 38 DAC E O In SD Only

33、 Mode: Luma/Blue/U Analog Output; in HD Only Mode and Simultaneous HD/SD Mode: Pr/Red Analog Output. 37 DAC F O In SD Only Mode: Chroma/Red/V Analog Output; in HD Only Mode and Simultaneous HD/SD Mode: Pb/Blue HD Analog Output. 23 P_HSYNC I Video Horizontal Sync Control Signal for HD in Simultaneous

34、 SD/HD Mode and HD Only Mode. 24 P_VSYNC I Video Vertical Sync Control Signal for HD in Simultaneous SD/HD Mode and HD Only Mode. 25 P_BLANK I Video Blanking Control Signal for HD in Simultaneous SD/HD Mode and HD Only Mode. 48 S_BLANK I/O Video Blanking Control Signal for SD Only. 49 S_VSYNC I/O Vi

35、deo Vertical Sync Control Signal for SD Only. 50 S_HSYNC I/O Video Horizontal Sync Control Signal for SD Only. 13,12, 92 Y9 to Y0 I SD or Progressive Scan/HDTV Input Port for Y Data. Input port for interleaved progressive scan data. The LSB is set up on Pin Y0. For 8-bit data input, LSB is set up on

36、 Y2. 3026, 1814 C9 to C0 I Progressive Scan/HDTV Input Port 4:4:4 Input Mode. This port is used for the CbBlue/U data. The LSB is set up on Pin C0. For 8-bit data input, LSB is set up on C2. 2-7 PIN DESCRIPTION Pin No. Mnemonic Input/Output Description 6258, 5551 S9 to S0 I SD or Progressive Scan/HD

37、TV Input Port for CrRed/V Data in 4:4:4 Input Mode. LSB is set up on Pin S0. For 8-bit data input, LSB is set up on S2. 33 RESET I This input resets the on-chip timing generator and sets the ADV7320/ADV7321 into default register setting. RESET is an active low signal. 47, 35 RSET1, RSET2 I A 3040 re

38、sistor must be connected from this pin to AGND and is used to control the amplitudes of the DAC outputs. 22 SCLK I I2C Port Serial Interface Clock Input. 21 SDA I/O I2C Port Serial Data Input/Output. 20 ALSB I TTL Address Input. This signal sets up the LSB of the I2C address. When this pin is tied l

39、ow, the I2C filter is activated, which reduces noise on the I2C interface. 1 VDD_IO P Power Supply for Digital Inputs and Outputs. 10, 56 VDD P Digital Power Supply. 41 VAA P Analog Power Supply. 46 VREF I/O Optional External Voltage Reference Input for DACs or Voltage Reference Output (1.235 V). 34

40、 EXT_LF I External Loop Filter for the Internal PLL. 31 RTC_SCR_TR I Multifunctional Input. Real-time control (RTC) input, timing reset input, subcarrier reset input. 19 I2C I This input pin must be tied high (VDD_IO) for the ADV7320/ADV7321 to interface over the I2C port. 64 GND_IO Digital Input/Ou

41、tput Ground. Internal Row Counter Column Pre Decoder Column Add Counter Self refresh logic & timer Sense AMP & I/O Gate I/O Buffer & Logic Address Register Burst Counter Mode Register State MachineAddress Buffers Bank Select Column Active Row Active CAS Latency CLK CKE CS RAS CAS WE DQM03 A0 A1 BA1

42、BA0 A10 Row Pre Decoder Refresh DQ0 DQ31 X-Decoder X-Decoder X-Decoder X-Decoder Y-Decoder 512Kx32 BANK 0 512Kx32 BANK 1 512Kx32 BANK 2 512Kx32 BANK 3 Memory Cell Array Data Out Control Pipe Line Control SDRAM for I/P SCALAR (57V643220 : IC62) BLOCK DIAGRAM 2-8 PIN DESCRIPTION PinPin NameDESCRIPTION

43、 CLKClock The system clock input. All other inputs are registered to the SDRAM on the rising edge of CLK. CKEClock Enable Controls internal clock signal and when deactivated, the SDRAM will be one of the states among power down, suspend or self refresh CSChip SelectEnables or disables all inputs exc

44、ept CLK, CKE and DQM BA0, BA1Bank Address Selects bank to be activated during RAS activity Selects bank to be read/written during CAS activity A0 A10Address Row Address : RA0 RA10, Column Address : CA0 CA7 Auto-precharge flag : A10 RAS, CAS, WE Row Address Strobe, Column Address Strobe, Write Enable

45、 RAS, CAS and WE define the operation Refer function truth table for details DQM03Data Input/Output Mask Controls output buffers in read mode and masks input data in write mode DQ0 DQ31Data Input/OutputMultiplexed data input / output pin VDD/VSSPower Supply/GroundPower supply for internal circuits and input buffers VDDQ/VSSQ Data Output Power/ Ground Power supply for output buffers NCNo ConnectionNo connection ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? MOTOR DRIVE IC (AM5888S : IC18) BLOCK DIAGRAM 2-9 PIN DESCRIPTIO