Panasonic-SAVK70DGC-cs-sm 电路图 维修手册.pdf

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1、Table Of Contents COVER 1 Before Use 2 Before Repair and Adjustment 3 Protection Circuitry 4 Safety Precautions 4.1 General Guidelines 4.1.1 Leakage Current Cold Check 4.1.2 Leakage Current Hot Check (See Figure 1) 5 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) De

2、vices 6 Handling the Lead-free Solder 6.1 About lead free solder (PbF) 7 Cautions to be taken when handling Optical Pickup 7.1 Handling Optical Pickup 7.2 Replacing Precautions for Optical Pickup Unit 7.3 Grounding for Preventing Electrostatic Destruction 8 Precaution of Laser Diode 9 Accessories 10

3、 Operation Procedures 11 Disc information RadioFans.CN 收音机爱 好者资料库 12 About HighMAT 12.1 What is HighMAT? 12.2 Why use HighMAT? 12.3 The advantages of using HighMAT 12.4 Outline of the HighMAT standard 13 Procedure for repairing the set 13.1 Distinguish the trouble cause 13.2 Diagnosis of Optical Pic

4、k-up Unit 14 Optical Pickup Self-Diagnosis and Replacement Procedure 14.1 Self-diagnosis 14.2 Cautions to Be Taken During Replacement of Optical Pickup and Spindle Motor 14.2.1 Cautions to be taken during replacement of optical pickup 15 Self-Diagnosis Function 15.1 Automatic Displayed Error Codes 1

5、5.1.1 Automatic Display Function 15.1.2 Re-Display 15.1.3 Description of Error Code 15.2 Memorized Error Codes 15.2.1 Activating Self-Diagnosis Function and Displaying Method 15.2.2 Re-Display 15.3 Mode Table 1 RadioFans.CN 收音机爱 好者资料库 15.4 DVD / CD Self-Diagnosis Error Code Description 15.5 Error Co

6、des Stored During No Play 15.6 Mode Table 2 15.7 Tray Lock Function 15.7.1 Setting 15.8 Things to Do After Repair 16 Cautions To Be Taken During Servicing 16.1 Recovery after the dvd player is repaired 16.2 DVD Player Firmware Version Upgrade Process 16.3 Firmware Version Upgrade Process by Using Di

7、sc and Recovery Process 16.3.1 Self-Diagnosis Function 16.4 Using Recovery Disc 16.4.1 Recovery Process 16.4.2 Version Upgrade Process 16.5 Total Usage Time Display 17 Operation Checks and Component Replacement Procedures 17.1 Disassembly of Top Cabinet 17.2 Disassembly for the DVD changer ass y 17.

8、2.1 Disassembly for the Top Ornament Unit 17.2.2 Disassembly for DVD changer unit RadioFans.CN 收音机爱 好者资料库 PV 17.3 Checking for the changer unit operational condition 17.3.1 Initial setting of CD 17.3.2 Checking for the DVD Module (1) P.C.B. 17.3.3 Checking for Panel P.C.B., Deck P.C.B. and LED P.C.B

9、. 17.3.4 Replacement of the Power Amplifier IC 17.4 Main Component Replacement Procedures 17.4.1 Replacement of the Traverse Deck 17.5 Replacement for the disc tray 17.6 Disassembly and reassembly for mechanism base drive unit 17.7 Replacement for the motor ass y 17.8 Replacement for the pinch rolle

10、r ass y and head block 17.9 Replacement for the CD motor ass y, capstan belt A, capstan belt B and winding belt 17.10 Replacement for the CD motor ass y, capstan belt A, capstan belt B and winding belt 17.11 Replacement for the cassette lid ass y 17.12 Measure for tape trouble 18 Measurements and Ad

11、justments 18.1 Cassette Deck Section 18.1.1 Head Azimuth Adjustment (Deck 1 / 2) 18.1.2 Tape Speed Adjustment (Deck 1 / 2) 18.1.3 Bias and Erase Voltage Check 18.1.4 Bias Frequency Adjustment (Deck 1 / 2) 18.2 Tuner Section 18.2.1 AM-IF Alignment 18.2.2 AM RF Adjustment 18.3 Alignment Points 18.3.1

12、Cassette Deck Section 18.3.2 Adjustment Point 19 Illustration of ICs, Transistors and Diodes 20 Terminal Function of IC 20.1 IC600 (C2BBHF000075 ) System Microprocessor 21 Block Diagram 22 Schematic Diagram 22.1 (A) DVD Module (1) Circuit 22.2 (B) DVD Module (2) Circuit 22.3 (C) Main Circuit Typical

13、ly the melting point is 50 - 70F (30 - 40C) higher. Please use a high temperature soldering iron. In case of soldering iron with temperature control,please set it to 700 20F (370 10C). G Pb free solder will tend to splash when heated too high (about 1100F/600C). G When soldering or unsoldering, plea

14、se completely remove all of the solder on the pins or solder area, and be sure to heat the soldering points with the Pb free solder until it melts enough. TOP PREVIOUS NEXT 7 Cautions to be taken when handling Optical Pickup TOP PREVIOUS NEXT The laser diode used inside optical pickup could be destr

15、oyed due to static electricity as a potential difference is caused by electrostatic load discharged from clothes or human body. Handling the parts carefully to avoid electrostatic destructionduring repair. 7.1 Handling Optical Pickup 7.2 Replacing Precautions for Optical Pickup Unit 7.3 Grounding fo

16、r Preventing Electrostatic Destruction TOP PREVIOUS NEXT 7.1 Handling Optical Pickup TOP PREVIOUS NEXT 1. Do not impact on optical pickup as the unit structurally uses an extremely precise technology. 2. Short-circuit the flexible cable of optical pickup remove from the circuit board using a short-

17、circuit pin or clip in order to prevent laser diode from electrostatic destruction (Refer to Fig. 7.1 and Fig. 7.2) 3. Do not handle flexible cables forcibly as this may cause snapping. Handle the parts carefully (Refer to Fig. 7.1) 4. A new optical pickup is equipped with an anti-static flexible ca

18、ble. After replacing and connecting to the flexible board, cut the anti-static flexible cable. (Refer to Fig. 7.1) Fig. 7.1 TOP PREVIOUS NEXT 7.2 Replacing Precautions for Optical Pickup Unit TOP PREVIOUS NEXT DVD/CD Optical Pickup The optical pickup by which part supply was carried out attaches the

19、 short clip to the flexible board for laser diode electrostatic discharge damage prevention. Please remove the short clip and be sure to check that the short land is open, beforeconnecting. (Please remove solder, when the short land short- circuits.) TOP PREVIOUS NEXT 7.3 Grounding for Preventing El

20、ectrostatic Destruction TOP PREVIOUS NEXT 1. Human body grounding Use the anti-static wrist strap to discharge the static electricity accumulated in your body. (Refer to Fig. 7.2) 2. Work place grounding Place a conductive material (conductive sheet) or ironboard where optical pickup is placed. (Ref

21、er to Fig. 7.2) Note : Keep your clothes away from optical pickup as wrist strap does not release the static electricity charged in clothes. Fig. 7.2 TOP PREVIOUS NEXT 8 Precaution of Laser Diode TOP PREVIOUS NEXT CAUTION : This unit utilizes a class 1 laser. Invisible laser radiation is emitted fro

22、m the optical pickup lens. Wavelength: 658nm(DVD)/780nm(VCD/CD). Maximum output radiation power from pickup: 100W/VDE When the unit is turned on : 1. Do not look directly into the pick up lens. 2. Do not use optical instruments to look at the pick up lens. 3. Do not adjust the preset variable resist

23、or on the pickup lens. 4. Do not disassemble the optical pick up unit. 5. If the optical pick up is replaced, use the manufacturers specified replacement pick up only. 6. Use of control or adjustments or performance of procedures other than those specified herein may result in hazardous radiation ex

24、posure. CAUTION! THIS PRODUCT UTILIZES A LASER. USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. Use of Caution Labels TOP PREVIOUS NEXT 9 Accessories TOP PREVIOUS NEXT Remote Control AC power supply cord FM ind

25、oor antenna AM indoor antenna Video cable Power plug adaptor TOP PREVIOUS NEXT 10 Operation Procedures TOP PREVIOUS NEXT TOP PREVIOUS NEXT 11 Disc information TOP PREVIOUS NEXT TOP PREVIOUS NEXT 12 About HighMAT TOP PREVIOUS NEXT 12.1 What is HighMAT? 12.2 Why use HighMAT? 12.3 The advantages of usi

26、ng HighMAT 12.4 Outline of the HighMAT standard TOP PREVIOUS NEXT 12.1 What is HighMAT? TOP PREVIOUS NEXT This word combines the abbreviations of Matsushita Electric Industrial Co. Ltd. and High Performance Media Access Technology, and is a trademark of Microsoft Corporation. The products with the H

27、ighMAT logo shown below are made according to the HighMAT standard. HighMAT is a format that allows users to save digital contents such as photographs, audio, and images on a CD. This gives consistency in the way of reading data when general consumer products (such as DVD players) and PCs are used,

28、and thus, itis easy to operate for the user. TOP PREVIOUS NEXT 12.2 Why use HighMAT? TOP PREVIOUS NEXT Up to now, there was no harmonized standard from playing digital content stored in CD-ROM formats (including CD-R) on consumer products like DVD players.Therefore, we used to have problems such as

29、follow: G There was no common play list or attached information on contents, which is called metadata. G The data compression method differed according to the equipment. G As the number of CD-ROMs recorded increased retrieved the contents became more difficult. G Because display and operation method

30、s were different depending on the equipment, the play order of the content on the same disc could change. TOP PREVIOUS NEXT 12.3 The advantages of using HighMAT TOP PREVIOUS NEXT Applying the HighMAT standard will solve the following problems and will improve usability. G It will create a common use

31、r interface for both PC and consumer products. G Regardless of the types of consumer products, such as DVD players, portable CD players, car stereos, and micro computers, a consistent way to pay for digital content will be created and it will make it easier to retrieve data. G You can also play digi

32、tal content on the disc, which was created in accordance with the HighMAT format with a conventional CD-ROM player. TOP PREVIOUS NEXT 12.4 Outline of the HighMAT standard TOP PREVIOUS NEXT 1. Recording medium H CD-R/CD-RW H Supports ISO 9660 Level Expanded Joliet H For multiple session 2. Support da

33、ta format H Level 1 player: WMA, MP3 (MPEG-1 Audio Layer 3) H Level 2 player: WMA, MP3 (MPEG-1 Audio Layer 3), JPEG H Level 3 player: WMA, MP3 (MPEG-1 Audio Layer 3), JPEG, WMV, MPEG4 (optional) 3. Limitation of data format H WMA, MP3 (MPEG-1 Audio Layer 3) 64 kbps - 160.999 kbps, 44.1 KHz, stereo,

34、fixed bit rate/ variable bit rate. H WMA, V2 and above, excluding Lossless/Voice/Pro H JPEG: Max 6M pixel, Maximum file size: 3 MB 4. Limitations regarding the number of files on the media, etc. H Total number of audio files: Maximum 450 H Total number of still picture files: Maximum 999 H Total num

35、ber of animation files: Maximum 200 H Total number of directories: Maximum 400 H Length of a file name: Maximum 108 characters (Unicode) H Total number of play lists: Maximum 200 H Number of contents in the playlist: Maximum 900 5. Composition of HighMAT disc H Menu: Classified for the navigation of

36、 the HighMAT digital contents. When menu selected, its submenu or the play list will be displayed. H Play list: A list in which one or more digital contents are arranged in order H Group: Sub-divided group of a play list. H Digital Contents: Audio, still picture, and animation data. TOP PREVIOUS NEX

37、T 13 Procedure for repairing the set TOP PREVIOUS NEXT 13.1 Distinguish the trouble cause 13.2 Diagnosis of Optical Pick-up Unit TOP PREVIOUS NEXT 13.1 Distinguish the trouble cause TOP PREVIOUS NEXT How to distinguish the trouble 1. View mechanical part if visual damage occurred. Confirm the moveme

38、nt of mechanical parts assembly (tray assy, loading mechanism assy, etc.). 2. Diagnose if Optical Pickup Unit is faulty (refer to diagnosis of Optical Pickup Unit). 3. If mechanism and OPU are OK, it is P.C.B. Cause 1 Possible fault 1. AC Inlet Circuit/Voltage Selector Circuit Fuse Blow (F1,F2), Pow

39、er Transformer Problem(T501, T502), Wrong Selection of Selector (S501) 2. Power CircuitF3, F4, FP951, FP950 3. Power Amp CircuitIC502 faulty 4. Power Supply CircuitIC500, IC501 faulty Cause 2 Possible fault 1. Mechanical block Tray and loading mechanical block, traverse unit, deck unit 2. O.P.U.Refe

40、r to the diagnosis of OPU 3. CircuitLD drive, servo (Traverse, Focus, Tracking) Disc sensor Signal processing (FORE, SODC, DV1 etc.) 4. Power circuitFP951 Cause 3 Possible fault 1. Mechanical blockTraverse block (Tilt adjustment) 2. O.P.U.Refer to the diagnosis of OPU 3. Mechanism Cirucit Servo (Foc

41、us, tracking) Signal processing (FORE, SODC, DV1 etc.) TOP PREVIOUS NEXT 13.2 Diagnosis of Optical Pick-up Unit TOP PREVIOUS NEXT How to distinguish Laser destruction/damage Confirmation 1 Remove cover of mechanism block so that you will see the lens of optical pickup. Confirm emission of laser at t

42、he moment when power switch is turned on. If there is no laser emission, laser diode is faulty. Confirmation 2 While holding “Pause” and “Open/Close” button, press “Display” button on the remote controller. Unit display laser current on FL. From the reading of display, you can judge if laser diode i

43、s damaged or not. Reading on the right side should be less than 70. If reading is more than 70, laser is damaged. How to confirm if Optical Pickup is OK Confirmation 1 1. Confirmation of jitter value with test disc. (Refer below for how to check jitter) 2. Lens cleaning. 3. Reconfirm jitter value. 4

44、. Perform tile adjustment. (Refer to tilt adjustment) 5. Reconfirm jitter value. (To confirm jitter value, while pressing “Pause” and “Open/Close” button, press numeric “5” on remote controller.) Unit display jitter value on FL. Confirmation 2 If servo is very unstable due to optical error and you c

45、annot confirm jitter value, clean the lens and check appearance of pick up unit (cutting coil of actuator, etc), then check circuitry. TOP PREVIOUS NEXT 14 Optical Pickup Self-Diagnosis and Replacement Procedure TOP PREVIOUS NEXT 14.1 Self-diagnosis 14.2 Cautions to Be Taken During Replacement of Op

46、tical Pickup and Spindle Motor 14.2.1 Cautions to be taken during replacement of optical pickup TOP PREVIOUS NEXT 14.1 Self-diagnosis TOP PREVIOUS NEXT This unit is equipped with the optical pickup self-diagnosis function and the tilt adjustment check function. Follow the procedure described below d

47、uring repair in order to perform self-diagnosis and tilt adjustment effectively. Especially when “NODISC” is displayed, be sure to apply the self- diagnosis function before replacing with an optical pickup. Replacement of optical pickup generally requires when the present value of laser drive exceed

48、s 45 (DVD) or 45 (CD). Note: Start diagnosis within three minutes after turning on the power (as diagnosis fails when the unit becomes warm). TOP PREVIOUS NEXT 14.2 Cautions to Be Taken During Replacement of Optical Pickup and Spindle Motor TOP PREVIOUS NEXT Before replacing the optical pickup and s

49、pindle motor, check a total usage time respectively. Follow the checking method described below. Item Status and Key Function Display Checking DVD, CD laser usage time With the unit stopped and no disc inserted, press the. button on the player and the buttonon the remote controller unit. T1_xxxx_yyyy xxxx(DVD), yyyy(CD): total time is d