Philips-DVD-755-VR-Service-Manual(1) 电路图 维修手册.pdf

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1、Published by MW 0365 Service PaCEPrinted in the NetherlandsSubject to modificationEN 3122 785 13520 Copyright 2003 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any for

2、m or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips. DVD-VCR PlayerDVD755VR DVD755VR /00 DVD755VR /02 DVD755VR /05 DVD755VR /14 SECTION 1 SUMMARY1-1 PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS 1-3 SERVICING PRECAUTIONS 1-4 SERVICE

3、INFORMATION FOR EEPROM IC SETTING 1-5 SPECIFICATIONS1-6 SECTION 2 CABINET CONNECT A 1500 OHM 10 WATT RESIS- TOR, PARALLELED BY A .15 MFD. 150.V A.C TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER PIPE, CON- DUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE THE A.C. VOLTAGE A

4、CROSS 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 MEASURED MUST NOT EXCEED 75 VOLTS R.M.S. THIS CORRESPONDS TO 0.5 MILLIAMP A.C ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SH

5、OCK HAZARD AND MUST BE CORRECTED IMMEDIATELY. SUBJECT: GRAPHIC SYMBOLS THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED “DANGEROUS VOLTAGE” THAT MAY BE OF SUFFICIENT MAG- NITUDE TO CONSTITUTE A RISK O

6、F ELECTRIC SHOCK. THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIAN- GLE IS INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE LITERATURE. SUBJECT : X-RADIATION 1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PER- SONNEL COVER THE SUBJECT OF X-RA

7、DIATION. THE ONLY POTEN- TIAL SOURCE OF X-RAYS IN CURRENT T.V. RECEIVERS IS THE PIC- TURE TUBE. HOWEVER, THIS TUBE DOES NOT EMIT X-RAYS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERA- TION AT HIGHER VOLTAGES MAY CAUSE A FAILURE O

8、F THE PIC- TURE TUBE OR HIGH VOLTAGE SUPPLY AND, UNDER CERTAIN CIR- CUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF DESIR- ABLE LEVELS. 2. ONLY FACTORY SPECIFIED C.R.T. ANODE CONNECTORS MUST BE USED. DEGAUSSING SHIELDS ALSO SERVE AS X-RAY SHIELD IN COLOR SETS, ALWAYS RE-INSTALL THEM. 3. IT IS ESSNTIA

9、L THAT SERVICE PERSONNEL HAVE AVAILABLE AN ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRA TION OF THE METER SHOULD BE CHECKED PERIODICALLY AGAINST A REFERENCE STANDARD, SUCH AS THE ONE AVAILABLE AT YOUR DISTRIBUTOR. 4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY THERE IS NO POSSIBIL

10、ITY OF AN X-RADIATION PROBLEM. EVERY TIME A COLOR CHASSIS IS SERVICED. THE BRIGHTNESS SHOULD BE RUN UP AND DOWN WHILE MONITORING THE HIGH VOLTAGE WITH A METER TO BE CERTAIN THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATING CORRECTLY, WE SUGGEST THAT YOU AND YOUR SER

11、VICE ORGA- NIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE REGU- LATION IS ALWAYS CHECKED AS A STANDARD SERVICING PROCE- DURE. AND THAT THE HIGH VOLTAGE READING BE RECORDER ON EACH CUSTOMERS INVOICE. 5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH V

12、OLTAGE, AVOID BEING UNNECESSARILY CLOSE TO THE PICTURE TUBE AND THE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE PRODUCT LONGER THAN IS NECESSARY TO LOCATE THE CAUSE OF EXCES SIVE VOLTAGE. 6. REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS (WHERE USE

13、D). SUBJECT: IMPLOSION 1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTE GRAL IMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BE TAKEN TO AVOID DAMAGE DURING INSTALLATION, AVOID SCRATCHING THE TUBE. IF SCRATCHED REPLACE IT. 2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES. SUBJECT : TIPS ON

14、 PROPER INSTALLATION 1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBY- HOLE 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 RADIA- TORS

15、WHERE STEAM LEAKAGE IS A FACTOR, ETC. 3. AVOID PALCEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING. THE CUSTOMER SHOULD ALSO AVOID THE USE OF DEC- ORATIVE SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION. 4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMER- CIAL MOUNTING KIT. MUST FOLL

16、OW 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

17、 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 HAZ- ARDS OF TRYING TO ROLL A C

18、ART 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 LARGE

19、R SCREEN SIZE. 8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS, EXPLAIN THAT A FOREST OF EXTENSIONS SPROUTING FROM A SIN- GLE OUTLET CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY. PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS A.C. VOLTMETER GOOD EARTH GROUND SUCH AS THE WAT

20、ER PIPE. CONDUIT. ETC PLACE THIS PROBE ON EACH EXPOSED METAL PART 1-4 SERVICING PRECAUTIONS CAUTION : Before servicing the VCR+DVD covered by this service data and its supplements and addends, read and fol- low the SAFETY PRECAUTIONS. NOTE : if unforeseen cir- cumstances create conflict between the

21、following servicing precautions and any of the safety precautions in this publi- cations, always follow the safety precautions. Remembers Safety First: General Servicing Precautions 1. Always unplug the VCR+DVD AC power cord from the AC power source before: (1)Removing or reinstalling any component,

22、 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 elec- trolytic capacitor. Caution : A wrong part substitution or incorrect polarity installation of electro

23、lytic capacitors may result in an explosion hazard. 2. Do not spray chemicals on or near this VCR+DVD 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, cott

24、on-tipped 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 apply AC power to this V

25、CR+DVD 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 ground lead last. Insulation

26、 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 resis- tance between each blade of the attachment plug and acces- sible conductive parts (Note 1) should be m

27、ore than 1M- ohm. Note 1 : Accessible Conductive Parts including Metal pan- els, 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

28、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 an

29、y semiconductor compo- nent or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commer- cially available discharging wrist strap device, which should be removed for potential shock reasons prior to app

30、lying 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 grouned-tip soldering iron to solder or unsolder

31、 ES devices. 4. Use only an anti-static 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 freon-propelled chemicals. These can generate electrical charge sufficient to damage ES devices. 6.

32、 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. Immediately before re

33、moving 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 b

34、odily motions when handling 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 elec- tricity sufficient to damage an ES device.) 1-5 SERVICE INFORMATION FOR EEPROM IC

35、SETTING MODELNAMEHEX BINARY DVD755VR/00OPT17C00000000 OPT26300000000 OPT38900000000 OPT4F100000000 OPT53100000000 OPT64800000000 DVD755VR/02OPT17C00000000 OPT26300000000 OPT30900000000 OPT4F000000000 OPT56200000000 OPT64000000000 DVD755VR/05OPT13C00000000 OPT26300000000 OPT38900000000 OPT4F100000000

36、 OPT53100000000 OPT64800000000 DVD755VR/14OPT13C00000000 OPT26A00000000 OPT38900000000 OPT4F700000000 OPT50000000000 OPT65000000000 WR : OK I : EXIT MOVE : F G EDIT : DE 1. DETECT NEW EEPROM (OPTION EDIT SCREEN) - Eeprom EDIT screen automatically appears if replacing Eeprom. - Setup option data usin

37、g the cursor Up/Down key of a remote control. (Setup upon BOM depending on OPT1OPT6 model) Since an initial remote control is set to LG for LG model, appropriately set option data using the cursor Up/Down key. For PHILIPS model, change a remocon key by using following JIG key. PHILIPS MODEL : FRONT

38、FF + FRONT REC KEY(LG/PHILIPS CODE) 2. EEPROM WRITED COMPLETE SCREEN - Writes data on EEPROM by using REMOCON OK. - If completing the option data screen with a menu key, Powering Off is automatically done and the option edit screen is arranged. 3. PG ADJUST 1) Payback the SP standard tape 2) Press t

39、he “1” key on the Remote controller and the “PLAY” key on the Front Panel at the same time, then it goes into Tracking initial mode. 3) Repeat the above step(No.2), then it finishes the PG adjusting automatically. 4) Stop the playback, then it goes out to PG adjusting mode after mony the PG data. 4.

40、 EEPROM INITIAL - SETUP is displayed in the field if pressing the FRONT REC KEY with the remocon number CLEAR key pressed in the status of no tape. - AUTO SEARCH is done since the initial screen of ACMS is serviced if powering On. - Check basic operation (PLAY/RECORD.) EEPROM option code No. setting

41、EEPROM option code No. setting procedure NAMEHEXBINARY OPT10000000000 OPT20000000000 OPT30000000000 OPT40000000000 OPT50000000000 OPT60000000000 WR : OK I : EXIT MOVE : F G EDIT : DE MASKROM : R00 EEPROM : R00 LG CODE 1-6 SPECIFICATIONS DVD PART Power supplyAC 220230V, 50Hz Power consumtion23W Mass5

42、.4kg External dimensions430 x 97.5 x 360 (W x H x D) Signal systemPAL 625/50, NTSC 525/60 LaserSemiconductor laser, wavelength 650nm Frequency range (digital audio)4 Hz to 20 kHz Signal-to-noise ratio (digital audio)More than 100 dB (EIAJ) Audio dynamic range (digital audio)More than 95 dB (EIAJ) Ha

43、rmonic distortion(digital audio)0.008% Wow and flutterBelow measurable level (less than +0.001%(W.PEAK) (EIAJ) OperationsTemperature : 5C(41F) to 35C(95F), Operation status : Horizontal OUTPUTS Video outputs1.0V(p-p), 75, negative sync., RCA jack x 1/SCART(TO TV) S video outputs(Y)1.0V(p-p), 75, neg

44、ative sync.,Mini DIN 4-pin x 1 (C)0.3V(p-p), 75 Component video output(Y) 1.0 V (p-p), 75 , negative sync., RCA jack x 1 (Pb)/(Pr) 0.7 V (p-p), 75 Audio output(digital audio)0.5V(p-p), 75, RCA jack X 1/SCART(TO TV) Audio output(optical audio)Optical connector x 1 Audio output(analog audio)2.0Vrms (1

45、kHz, 0dB), 330, RCA jack (L, R) x 1/ SCART(TO TV) VHS PART Video Head SystemDouble azimuth 4 heads, helical scanning Tape formatTape width 12.7 mm (0.5 inch) Timer24 hours display type *Designs and specifications are subject to change without notice. *Weight and dimensions shown are approximate. Dir

46、ections for Use Personal Notes: 2-1 SECTION 2 CABINET & MAIN CHASSIS CONTENTS 1. EXPLODED VIEWS.2-2 1. Cabinet and Main Frame Section.2-2 2. Packing Accessory Section.2-3 2-2 EXPLODED VIEWS 1. Cabinet and Main Frame Section 467 300 A43 A42 A49 OPTIONAL PARTS 280 465 250 467 467 467 284 283 LD601 330

47、 276 260 A46 A46A A48 A00 A26 285 457 457 457 457 467 467 452 274 452 330 323 A 5 4 3 2 1 BCD 2-3 2. Packing Accessory Section BATTERY808 BAG804 PACKING OPTIONAL PARTS 803 806 INSTRUCTION ASSEMBLY CABLE, COAXIAL 810CABLE ASSY, RF 801 REMOCON900 BOX CARTON802 PACKING803 811 812 PLUG ASSY(YELLOW) PLUG ASSY(RED/WHITE) 821SCART CABLE 813PLUG ASSY(BLACK) 3-1 SECTION 3 ELECTRICAL CONTENTS OVERALL BLOCK DIAGRAM.3-2 VCR PART ELECTRICAL ADJUSTMENT PROCEDURES.3-3 ELECTRICAL TROUBLESHOOTING GUIDE.3-4 1. POWER(SMPS) CIRCUIT.3-4 2. SYSTEM/KEY CIRCUIT .3-7 3. SERVO CIRCUIT.