Teac-DV-H50-Service-Manual电路原理图.pdf

《Teac-DV-H50-Service-Manual电路原理图.pdf》由会员分享，可在线阅读，更多相关《Teac-DV-H50-Service-Manual电路原理图.pdf（58页珍藏版）》请在收音机爱好者资料库上搜索。

1、 RadioFans.CN 收音机爱 好者资料库 1-2 SECTION 1 SUMMARY CONTENTS PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS . 1-3 SERVICING PRECAUTIONS . 1-4 * General Servicing Precautions * Insulation checking prodedure * Electrostatically Sensitive Devices SPECIFICATIONS . 1-5 LOCATION OF CUSTOMER CONTROLS .

2、1-6 1-7 RadioFans.CN 收音机爱 好者资料库 1-3 PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS 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 YO

3、UR 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

4、, USE AN ISOLATION TRANSFORMER FOR PROTECTION FROM A.C. LINE SHOCK. SAFETY CHECKS AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRCTED. A CHECK SHOULD BE MADE OF THE FOLLOWING. SUBJECT : FIRE CONNECT A 1500 OHM 10 WATT RESISTOR, PARALLELED BY A .15 MFD, 150.V A.C TYPE CAPACITOR BETWEEN A KNOWN GOOD

5、EARTH GROUND (WATER PIPE, CONDUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15 MFD CAPACITOR. REVERSE THE A.C. PLUG AND REPEAT A.C. VOLTAGE MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURE MUST NOT EXCE

6、ED 75 VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP A.C 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 FITT

7、ING 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 PALCEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING. TH

8、E 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 ORIG

9、INAL 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 TIL

10、TED 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

11、 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 S

12、PROUTING 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 MA

13、GNITUDE 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. A.C. VOLTMETER PLACE THIS PROBE ON EACH EXP

14、OSED METAL PART GOOD EARTH GROUND SUCH AS THE WATER PIPE. CONDUIT. ETC 10 WATT 0.15uF 1-4 SERVICING PRECAUTIONS CAUTION : Before servicing the DVD player covered by this service data and its supplements and addends, read and follow the SAFETY PRECAUTIONS. NOTE : if unforeseen circumstances create co

15、nflict between the following servicing precautions and any of the safety precautions in this publications, always follow the safety precautions. Remembers Safety First: General Servicing Precautions 1. Always unplug the DVD player AC power cord from the AC power source before: (1) Removing or reinst

16、alling any component, circuit board, module, or any other assembly. (2) Disconnection 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 in

17、stallation of electrolytic capacitors may result in an explosion hazard. 2. Do not spray chemicals on or near this DVD player 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 w

18、ith 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 whitch instruments covered by this service manual might be equipped. 5. Do not a

19、pply AC power to this DVD player and/or any of its electrical assemblies unless all solid-state device heat sinks are cerrectly installed. 6. Always connect test instrument ground lead to the appropriate ground before connection the test instrument positive lead. Always remove the test instrument gr

20、ound 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 part

21、s (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

22、 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

23、 before handling any semiconductor component or semiconductorequipped 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 reason

24、s 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 sol

25、der 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 E

26、S devices. 6. Do not remove a replacement ES device from its protec tive 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. lmmediat

27、ely 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.

28、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.) 1-5 SPECIFICATIONS DVD VIDEO

29、 PLAYER Power supply . AC 230 V, 50 Hz (EUR)/ 120 V, 60 Hz (US/CANADA) Power consumption . 22 W External dimensions (W x H x D) . 285 x 131 x 292 mm Weight (net) . 3.9 kg Signal system . PAL (EUR)/NTSC (US/CANADA) Laser . Semiconductor laser, wavelength 650 nm Frequency range (digital audio) . 2 Hz

30、to 22 kHz Signal-to-noise rating (digital audio) . More than 105 dB (EIAJ) Audio dynamic range (digital audio) . More than 92 dB (EIAJ) Harmonic distortion (digital audio) . 0.008% Wow and flutter . Below measurable level (less than + 0.001% (W.PEAK) (EIAJ) Operating conditions . Temperature: 41F to

31、 95F, Operation status: Horizontal OUTPUTS Video output . 1.0 V (p-p), 75 , negative sync., RCA jack x 1 S-video output . (Y) 1.0 V (p-p), 75 , negative sync., Mini DIN 4-pin x 1 (C) 0.286 V (p-p) 75 Audio output (digital audio) . 0.5 V (p-p), 75 , RCA jack x 1 Audio output (analog audio) . 2.0 Vrms

32、 (1 kHz, 0 dB), RCA jack x1 1-6 LOCATION OF CUSTOMER CONTROLS POWER/Standby button and indicator (Standby mode : Red color) Display Window OPEN/CLOSE button SKIP/SCAN buttons STOP button PLAY button PAUSE button Disc Tray TruSurroundRemote sensor Audio 5.1CH OUT jacks POWER CordAUDIO MIXED OUT jacks

33、 DIGITAL AUDIO OUT jack (COAXIAL) DIGITAL AUDIO OUT jack (OPTICAL) Remote Control Selector switch Remote Control jacks AV CONNECTOR jack S-VIDEO OUT jack VIDEO OUT jack FRONT PANEL REAR PANEL EUR only 1-7 RANDOM indicator PROGRAM indicator CHAPTER indicatorRESUME indicator TRACK indicatorREPEAT indi

34、cator REMAIN indicatorTITLE indicatorPLAY indicator VIDEO CD indicator DVD indicator 5.1 CH & SRS indicator Use the TITLE button to display the title screen included on DVD video discs. To operate a menu screen, follow the instructions in Using a Title Menu. Use the MENU button to display the menu s

35、creen included on DVD video discs. To operate a menu screen, follow the instructions in Using a DVD Menu. (up, down, left, right) for use in highlighting a selection on a GUI menu screen, TITLE and MENU screen * Directional arrow buttons * TITLE button * MENU button POWER button REPEAT button SHUFFL

36、E (RANDOM) button SET UP button AUDIO button SUBTITLE button *TITLE button SELECT button GUI button MARKER button SCAN/STEP button ZOOM button RESUME button Number button CLEAR button PROGRAM button PAUSE button STOP button FWD/REV SKIP button PLAY button SLOW buttons MARKER-SEARCH button RETURN but

37、ton *ARROW buttons *MENU button ANGLE button TruSURROUND button A-B button OPEN/CLOSE button DISPLAY Window REMOTE CONTROL 1-8 RANDOM indicator PROGRAM indicator CHAPTER indicatorRESUME indicator TRACK indicatorREPEAT indicator REMAIN indicatorTITLE indicatorPLAY indicator VIDEO CD indicator DVD ind

38、icator 5.1 CH & SRS indicator Use the TITLE button to display the title screen included on DVD video discs. To operate a menu screen, follow the instructions in Using a Title Menu. Use the MENU button to display the menu screen included on DVD video discs. To operate a menu screen, follow the instru

39、ctions in Using a DVD Menu. (up, down, left, right) for use in highlighting a selection on a GUI menu screen, TITLE and MENU screen * Directional arrow buttons * TITLE button * MENU button POWER button REPEAT button SHUFFLE (RANDOM) button SET UP button AUDIO button SUBTITLE button *TITLE button SEL

40、ECT button GUI button MARKER button SCAN/STEP button ZOOM button RESUME button Number button CLEAR button PROGRAM button PAUSE button STOP button FWD/REV SKIP button PLAY button SLOW buttons MARKER-SEARCH button RETURN button *ARROW buttons *MENU button ANGLE button TruSURROUND button A-B button OPE

41、N/CLOSE button DISPLAY Window REMOTE CONTROL 2-9 ELECTRICAL TROUBLESHOOTING GUIDE 1. SYSTEM CHECK Standby LED ON? Power ON. OK YES NO Refer to Front Part. NO NO Replace Main B/D Check Mechanism Reconnect Check Power. Does Bar appear at FLD? Do all eight Bars appear? NO YES NO Reconnect NO Check Mech

42、anism NO Refer to Front Part NO Check the Oscillation YES Refer to Front Part Check Video part NO Check MPEG part Is CN04 Connected normally? YES YES YES YES NO Is CN04 Pin 5 7 normally? CHECK message appear? Is CN06, CN07 Connected normally? YES Does logo appear? YESYES Disc reading? YES AUDIO/VIDE

43、O output? YES YES NO Is CN04 Pin 1 3 normally? Is oscillation of X101 normal? NO Refer to Front Part Are IC25 Pin 116 and TP54,55 normal? YES NO Replace IC Replace Main B/D Is IC8, 9, 10, 11 normal? 2-10 2. Power Circuit Input Voltage : 230 V It is possible to malfunction, if the unload condition is

44、 left for a long time when power on. (More than Dummy load 100mA) The resistor value of both terminal is measured with DVM crossing each other to check the each element is normal or abnormal. (It is normal when the numerical value is different each other.) START Is F601 normal? YES NO A primary side

45、 abnormal Check the GND of C601 and IC68 Pin 3 with oscilloscope END END To (A) (A) Is voltage D601 230V? NO NO NO NO NO NO Is IC68 pin 3 switching normally? YES Are R607, D602, normal? YES Are SN61 and R612 normal? YES Is PC61 normal? YES YES Is CN63 pin 6 5.2V? In condition of DC140V. (Feedback is

46、 abnormal) Check or replace D610,D622. YES YES Is CN64 pin 3 5V? YES Is CN64 pin 9 and 11 12V? YES YES NO Are CN63 Pin 6 -32V, Pin 4 -22V and Pin 5 -26V? Is CN64 pin 1 and 2 3.3V? YES YES YES Are CN64 Pin 4 and 5 5V? Does oscillate continuously when the CN63 is disconnected? When IC68 Oscillating Secondary side is