Panasonic-SAVK71DGCS-cs-sm 电路图 维修手册.pdf

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1、n AMPLIFIER SECTION RMS Output Power : Dolby Digital Mode Front Ch 70 W per channel (6 ), 1 kHz, 10 % THD Surround Ch 35 W per channel (6 ), 1 kHz, 10 % THD Center Ch 70 W per channel (6 ), 1 kHz, 10 % THD Total RMS Dolby Digital mode power 280 W PMPO output power3000 W n FM / AM TUNER, TERMINALS SE

2、CTION Preset stationFM 15 stations AM / MW 15 stations Frequency Modulation (FM) Frequency range87.50 -108.00 MHz (50 kHz step) Sensitivity2.5 V (IHF) S / N 26dB2.2 V Antenna terminals75 (unbalanced) Amplitude Modulation (AM / MW) Frequency range522 -1629 kHz (9 kHz step) 520 -1630 kHz (10 kHz step)

3、 AM sensitivity S / N 20 dB at 1000 kHz 560 V / m Audio performance (Amplifier) Input sensitivity / Input impedance 2004 Panasonic AVC Networks Singapore Pte. Ltd. (RCB Registration Number: 197701580H) All rightsreserved.Unauthorizedcopyingand distribution is a violation of law. SA-VK71DGCS Colour (

4、S). Silver Type Aux250 mV, 20 k Phone jack TerminalStereo, 3.5 mm jack Mic jack Sensitivity0.7 mV, 600 TerminalMono, 6.3 mm jack (2 system) n CASSETTE DECK SECTION TypeAuto Reverse Track system4 Track, 2 Channel Head Record / PlaybackSolid Permalloy Head ErasureDouble Gap Ferrite Head MotorDC Servo

5、Motor Recording SystemAC Bias 100 kHz Erase SystemAC Erase 100 kHz Tape Speed4.8 cm / s Overall Frequency Response ( + 3, - 6 dB) at DECK OUT Normal (TYPE I)35 Hz -14 kHz S / N Ratio50 dB (A weighted) Wow and Flutter0.18 % (WRMS) Fast Forward and Rewind TimeApprox. 120 seconds with C- 60 cassette ta

6、pe n DISC SECTION Disc played 8 cm or 12 cm (1) DVD- RAM (DVD- VR compatible, JPEG formatted disc) (2) DVD- Audio (3) DVD- Video DVD Stereo System Specifications ORDER NO. MD0407368C3 RadioFans.CN 收音机爱 好者资料库 (4) DVD- R (DVD- Video compatible) (5) CD- Audio (CD- DA) (6) Video CD (7) SVCD (Conforming

7、to IEC62107) (8) CD- R / CD- RW (CD- DA, Video CD, SVCD, MP3, WMA, JPEG formatted disc) (9) MP3 / WMA * Compatible compression rate: MP3: between 32 kbps and 320 kbps WMA: between 48 kbps and 192 kbps (10) JPEG * Exif Ver 2.1 JPEG Baseline files Picture resolution: between 320 x240 and 6144x4096 pix

8、els (Sub sampling is 4:2:2 or 4:2:0) (11) HighMAT Level 2 (Audio and Image) The total combined maximum number of recognizable audio and picture contents and groups: 4000 audio and picture contents and 400 groups. Pick up Wavelength (DVD / CD)662 nm / 785 nm Audio ouptut (Disc) Number of channels5.1

9、ch (FL, FR, C, SL, SR, SW) Audio performance (measurement at: Line out terminal) Frequency response CD- Audio4 Hz -20 kHz ( + 1, - 2 dB) n VIDEO SECTION Video system Signal systemPAL625 / 50, PAL525 / 60, NTSC Composite video output Output level1 Vp- p (75 ) TerminalPin jack (1 system) S VIDEO outpu

10、t Y output level1 Vp- p (75 ) 1 Before Use 3 2 Before Repair and Adjustment 4 3 Protection Circuitry 4 4 Safety Precautions 4 4.1. General Guidelines 4 5 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices 5 6 Handling the Lead-free Solder 5 6.1. About lead free

11、solder (PbF) 5 7 Cautions to be taken when handling Optical Pickup 7 7.1. Handling Optical Pickup 7 C output level0.3 Vp- p (75 ) (PAL) 0.286 Vp- p (75 ) (NTSC) TerminalS terminal (1 system) Component video output (480P / 480I) Y output level1 Vp- p (75 ) PBoutput level0.7 Vp- p (75 ) PRoutput level

12、0.7 Vp- p (75 ) Terminal Pin jack (Y: green, PB: blue, PR: red) (1 system) n GENERAL Power supply AC 110V / 127V / 220- 230V / 240V, 50 / 60Hz Power consumption246 W Power consumption in standby mode: 1 W Dimensions (WxHxD)250 x 330 x 364 mm Mass9.5 kg Operating temperature range+ 5 C to + 35 C Oper

13、ating humidity range5 % to 90 % RH (no condensation) n SYSTEM SC- VK71D (GCS)Music Center: SA- VK71D (GCS) Front Speakers: SB- VK61 (GC2) Center Speaker: SB- PC81B (GC) x 1 Surround Speakers: SB- PS81B (GC) x 2 SB- PT81B GC- S consists of SB- PS81B GC (x 2) Typically the melting point is 50 -70F (30

14、 -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). Pb free solder will tend to splash when heated too high (about 1100F/600C). When soldering or unsoldering, please completely remove all of the solder on

15、 the pins or solder area, and be sure to heat the soldering points with the Pb free solder until it melts enough. 6 SA-VK71DGCS 7 Cautions to be taken when handling Optical Pickup The laser diode used inside optical pickup could be destroyed due to static electricity as a potential difference is cau

16、sed by electrostatic load discharged from clothes or human body. Handling the parts carefully to avoid electrostatic destructionduring repair. 7.1. Handling Optical Pickup 1. Do not impact on optical pickup as the unit structurally uses an extremely precise technology. 2. Short- circuit the flexible

17、 cable of optical pickup remove from the circuit board using a short- 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.

18、1) 4. A new optical pickup is equipped with an anti- static flexible cable. After replacing and connecting to the flexible board, cut the anti- static flexible cable. (Refer to Fig. 7.1) Fig. 7.1 7.2. Replacing Precautions for Optical Pickup Unit DVD/CD Optical Pickup The optical pickup by which par

19、t supply was carried out attaches the 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.) 7.3. Groundi

20、ng for Preventing Electrostatic Destruction 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. (

21、Refer 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 7 SA-VK71DGCS 8 Precaution of Laser Diode Caution : This product utilizes a laser diode with the unit turned ON, invisible laser radiation is emitt

22、ed from the pick up lens. Wavelength : 662 nm(DVD)/785 nm(CD) Maximum output radiation power from pick up : 100 W/VDE Laser radiation from pick up unit is safety level, but be sure the followings: 1. Do not disassemble the optical pick up unit, since radiation from exposed laser diode is dangerous.

23、2. Do not adjust the variable resistor on the pick up unit. It was already adjusted. 3. Do not look at the focus lens using optical instruments. 4. Recommend not to look at pick up lens for a long time. CAUTION! THIS PRODUCT UTILIZES A LASER. USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDUR

24、ES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. n Use of Caution Labels 8 SA-VK71DGCS 9 Accessories Remote control AC cord FM antenna AM antenna Video cable 9 SA-VK71DGCS 10 Operation Procedures 10 SA-VK71DGCS 11 SA-VK71DGCS 11 Disc information 12 SA-VK71DGCS 13 SA-V

25、K71DGCS 12 About HighMAT 12.1. What is HighMAT? 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 HighMAT logo shown below are made according to the HighMATs

26、tandard. 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, and thus, itis easy to operate for the user. 12.2. Why use

27、HighMAT? 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 follow: There was no common play list or attached information on contents, which is called m

28、etadata. The data compression method differed according to the equipment. As the number of CD- ROMs recorded increased retrieved the contents became more difficult. Because display and operation methods were different depending on the equipment, the play order of the content on the same disc could c

29、hange. 12.3. The advantages of using HighMAT Applying the HighMAT standard will solve the following problems and will improve usability. It will create a common user interface for both PC and consumer products. Regardless of the types of consumer products, such as DVD players, portable CD players, c

30、ar stereos, and micro computers, a consistent way to pay for digital content will be created and it will make it easier to retrieve data. 14 SA-VK71DGCS You can also play digital content on the disc, which was created in accordance with the HighMAT format with a conventional CD- ROM player. 12.4. Ou

31、tline of the HighMAT standard 1. Recording medium CD- R/CD- RW Supports ISO 9660 Level Expanded Joliet For multiple session 2. Support data format Level 1 player: WMA, MP3 (MPEG- 1 Audio Layer 3) Level 2 player: WMA, MP3 (MPEG- 1 Audio Layer 3), JPEG Level 3 player: WMA, MP3 (MPEG- 1 Audio Layer 3),

32、 JPEG, WMV, MPEG4 (optional) 3. Limitation of data format 15 SA-VK71DGCS WMA, MP3 (MPEG- 1 Audio Layer 3) 64 kbps -160.999 kbps, 44.1 KHz, stereo, fixed bit rate/ variable bit rate. WMA, V2 and above, excluding Lossless/Voice/Pro JPEG: Max 6M pixel, Maximum file size: 3 MB 4. Limitations regarding t

33、he number of files on the media, etc. Total number of audio files: Maximum 450 Total number of still picture files: Maximum 999 Total number of animation files: Maximum 200 Total number of directories: Maximum 400 Length of a file name: Maximum 108 characters (Unicode) Total number of play lists: Ma

34、ximum 200 Number of contents in the playlist: Maximum 900 5. Composition of HighMAT disc Menu: Classified for the navigation of the HighMAT digital contents. When menu selected, its submenu or the play list will be displayed. Play list: A list in which one or more digital contents are arranged in or

35、der Group: Sub- divided group of a play list. Digital Contents: Audio, still picture and animation data. 16 SA-VK71DGCS 13 Procedure for repairing the set 17 SA-VK71DGCS 13.1. Distinguish the problem How to distinguish the trouble 1. View mechanical part if visual damage occurred. Confirm the moveme

36、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. 13.1.1. Troubleshooting Guide Part 1 Checking PointsPossible FaultsPossible ReasonsCounter

37、measure AC Inlet Circuit/Voltage Selector Circuit 1. Failure to power- up the main unit. 2. Power On switch WrongselectionofAC power to main unit. Voltage selector is faulty. AC inlet JK500 is faulty. ACLinefilterL500is faulty. Power On switch broken. Replace of fuse if found faulty. Replace of volt

38、age selector if found faulty. Replace of AC Inlet if found faulty or damaged. Replace AC Line filter is found faulty or damaged. Replace Power On button switch if necessary. If conditions as mentioned above is in good condition. Check for wire connection. (W1/W2/W3/W4/W6/W7). If connectionisgood,ple

39、aseproceedtocheckfor Transformer Circuit. 3.IntermittentPower supply to main unit. Check for connection. If condition 1 to 4 as mentioned above is in good condition.Checkforwireconnection. (W1/W2/W3/W4/W6/W7). If connection is good, please proceed to checkfor Transformer Circuit 18 SA-VK71DGCS Check

40、ing PointsPossible FaultsPossible ReasonsCountermeasure Transformer Circuit1.Nopowersupply voltagetothePower Circuit from AC In. Transformernooutput voltage. PowerLinefilterrelay RL502. D950 open circuit. Replace of Transformer T501 if found faulty. Replace of Power Relay if found faulty. Speaker Ci

41、rcuit1. No supply voltage to PowerSupplyCircuit fromTransformer Circuit. (+VccL/+VccH/- VccL/- VccH) Fuse F3/F4 blown. Rectifier Circuit problem. Replace fuse F3/F4 if found faulty. Replace D5832/D5831/D5846/D5847 if any is found to be faulty or damage. 1. No supply voltage to Main TOC is unreadable

42、 or invalid disc is inserted. Disc Code F103Ilegal highlight positionDisc standard is possibly illegal when highlight is displayed. IIC Error F4FFForced initialization failure (Time out) F880Unsuitable task numberWhen a message arrives from not existing task F890A message is sent during AV task tran

43、smissionDuring transmission of a message to AV task F891Unable to transmit a message to AV taskWhen transmission of a message to AV task starts F893DVD Module problemCheck for firmware version F894EEPROM failure F895Firmware compatibility problemCheck for firm version for Main QZZCWAT 19.1.1. Head A

44、zimuth Adjustment (Deck 1 / 2) Caution: Please replace both azimuth adjustment screw and springs simultaneously when readjusting the head azimuth. (shown in Fig. 2) Even if you wish to readjust the head azimuth without replacing the acrews and springs, a fine adjustment to theazimuth screw and sprin

45、g. Please remove the screw- locking bond left on the head base when replacing the azimuth screw. If you wish to readjust the head azimuth, be sure to adjust with adhering the cassette tape closely to the mechanism by pushing the center of cassette tape with your finger. (shown in Fig. 3) 1. Playback

46、 the azimuth adjustment portion (8 kHz, - 20dB) of the test tape (QZZCFM) in the forward play mode. Vary the azimuth adjustment screw until the output of the R- CH (PB OUT- R) are maximized. 2. Perform the same adjustment in the reverse play mode. 3. After the adjustment, apply screwlock to the azim

47、uth adjusting screw. 19.1.2. Tape Speed Adjustment (Deck 1 / 2) 1. Set the tape edit button to “NORMAL” position. 2. Insert the test tape (QZZCWAT) to DECK 2 and playback (FWD side) the middle portion of it. 3. Adjust Motor VR (DECK 2) for the output value shown below. Adjustment target: 2940 3060 H

48、z (NORMAL speed) 4. After alignment, assure that the output frequency of the DECK 1 FWD are within 60 Hz of the value of the output frequency of DECK 2 FWD. Fig. 1 19.1.3. Bias and Erase Voltage Check 1. Set the unit “AUX” position. 2. Insert the Normal blank tape (QZZCRA) into DECK 2 and the unit to “REC” mode (use “l REC/STOP” key). 3. Measure and make sure that the output is within the standard value. Bias voltage for Deck 2144mV (Normal) Erase voltage for Deck 280mV (Normal) Fig. 2 Fig. 3 19 Measurements and Adjustments 68 SA-VK71DGCS 19.1.4. Bias Frequency Adjustment (Deck 1 / 2)