Panasonic-SAHT895EE-htss-sm 电路图 维修手册.pdf

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1、lGeneral Power Source:AC 230V, 50Hz Power consumption:115 W Dimensions (WHD):43060354 mm Mass:3.35kg lAmplifier section RMS Output Power: Dolby Digital Mode lTotal RMS Dolby Digital mode Power:850 W At 1kHz and total harmonic of 10% lFront:100 W/ Channel (3) lCenter:225 W/ Channel (6) lSurround:100

2、W/ Channel (3) At 100Hz and total harmonic of 10% lActive subwoofers:225 W/ Channel (6) DIN Output Power: Dolby Digital Mode: lTotal DIN Dolby Digital mode Power: 440 W At 1kHz and total harmonic of 1% lFront:75 W/ Channel (3) lCenter:75 W/ Channel (6) 2006 Matsushita Electric Industrial Co., Ltd. A

3、ll rightsreserved.Unauthorizedcopyingand distribution is a violation of law. SA-HT895EE Colour (S).Silver Type lSurround:70 W/ Channel (3) At 100Hz and total harmonic of 1% lSubwoofer:75 W/ Channel (6) lPreset Memory:FM 15 stations AM/MW 15 stations lFrequency Modulation (FM) Frequency Range:87.50-1

4、08.00MHz (50kHz step) Sensitivity:2.5V (IHF) S/N 26dB2.2V Antenna terminals:75 (unbalanced) lAmplitude Modulation (AM/MW) Frequency Range:522-1629kHz (9kHz step) AM Sensitivity S/N 20dB at 999kHz: 560V/m lPhone jack: Terminal:Stereo 3.5 mm jack lMic jack: Sensitivity:0.7mV (1.2k) Terminal:Mono 6.3 m

5、m jack (1 system) lMusic Port (Front): DVD Home Theater Sound System Specifications ORDER NO.MD0607244CE RadioFans.CN 收音机爱 好者资料库 Sensitivity:100mV (15k) Terminal:Stereo 3.5 mm jack lDisc section Discs played (8 cm or 12 cm): (1)DVD DVD-Video, DVD-Audio, DivX(*1,2) (2)DVD-RAM DVD-VR, MP3(*2,6), JPEG(

6、*2,3), MPEG4(*2,4), DivX(*1,2) (3)DVD-R DVD-Video, DVD-VR, MP3(*2,6), JPEG(*2,3), MPEG4(*2,4), DivX(*1,2) (4)DVD-R DL DVD-Video, DVD-VR (5)DVD-RW DVD-Video, DVD-VR, MP3(*2,6), JPEG(*2,3), MPEG4(*2,4), DivX(*1,2) (6)+R/+RW Video (7)+R DL Video (8)CD, CD-R/RW CD-DA, Video CD, SVCD(*5), MP3(*2,6), WMA(

7、*2,7), JPEG(*2,3), MPEG4(*2,4), DivX (*1,2), HighMAT Level 2 (Audio and Image) *1Plays all versions of DivX video (including DivX6) with standard playback of DivX media files. Certified to the DivX Home Theater Profile. lGMC (Global Motion Compensation) is not supported. *2The total combined maximum

8、 number of recognizable audio, picture and video contents and groups: 4000 audio, picture and video contents and 400 groups. *3Exif Ver 2.1 JPEG Baseline files lPicture resolution: between 160 x 120 and 6144 x 4096 pixels (Sub sampling is 4:0:0, 4:2:0, 4:2:2, 4:4:4). Extremely long and narrow pictur

9、es may not be displayed. *4MPEG4 data recorded with Panasonic SD multi cameras or DVD video recorders. lConforming to SD VIDEO specifications (ASF standard)/ MPEG4 (Simple Profile) video system/G.726 audio system. *5Conforming to IEC62107 *6MPEG-1 Layer 3, MPEG-2 Layer 3 *7Windows Media Audio Ver.9.

10、0 L3 lNot compatible with Multiple Bit Rate (MBR) Pick up: Wavelength: lCD:785nm lDVD:662nm Laser power: lCD:CLASS 1M lDVD:CLASS 1 Audio output (DISC): Number of channels:5.1 ch (FL, FR, C, SL, SR, SW) Audio performance: Frequency response: DVD (linear audio):4 Hz-22 kHz (48 kHz sampling) 4 Hz-44 kH

11、z (96 kHz sampling) DVD-Audio:4 Hz-88 kHz (192 kHz sampling) CD-Audio:4 Hz-20 kHz S/N ratio: CD-Audio:105 dB Dynamic range: DVD (linear audio):95 dB CD-Audio:95 dB Total harmonic distortion: CD-Audio:0.005 % lVideo section Video system: Signal system:PAL 625/50, PAL 525/60, NTSC Composite video outp

12、ut: Output level:1 Vp-p (75 ) Terminal:Pin jack (1 system) S-video output: Y output level:1 Vp-p (75 ) C output level:PAL; 0.3Vp-p (75) NTSC; 0.286 Vp-p (75 ) TerminalS terminal (1 system) Component video output (NTSC: 480p/480i, PAL: 576p/576i): Y output level:1 Vp-p (75 ) PBoutput level:0.7 Vp-p (

13、75 ) PRoutput level:0.7 Vp-p (75 ) Terminal:Pin jack (Y: green, PB: blue, PR: red) (1 system) HDMI AV output: Terminal:19-pin type A connector HDMI Ver.1.2a (EDID Ver.1.3) Power consumption in standby mode: approx 0.5W Note: 1.Specifications are subject to change without notice. Mass and dimensions

14、are approximate. 2.Total harmonic distortion is measured by the digital spectrum analyzer. Solder: This model uses lead free solder (PbF). Mechanism: This model uses DL2SU (Single tray) mechanism. Refer to the original service manual for *1, *2, *3, *4. 2 SA-HT895EE RadioFans.CN 收音机爱 好者资料库 1 Safety

15、Precautions 5 1.1. GENERAL GUIDELINES 5 1.2. Before Repair and Adjustment 5 1.3. Protection Circuitry 5 2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices 6 3 Precaution of Laser Diode 7 4 About Lead Free Solder (PbF) 8 4.1. Service caution based on legal rest

16、rictions 8 CONTENTS Page Page 3 SA-HT895EE RadioFans.CN 收音机爱 好者资料库 5 Handling Precautions for Traverse Unit 9 5.1. Cautions to Be Taken in Handling the Optical Pickup Unit 9 5.2. Grounding for electrostatic breakdown prevention 9 6 Accessories 11 7 Operation Procedures 12 7.1. Remote Control Key But

17、tons Operations 12 7.2. Main Unit Key Buttons Operations 13 7.3. Use of HDAVI Control 14 7.4. Using of Music Port 15 7.5. Disc Information 16 7.6. About DivX VOD Content 18 8 New Features 19 8.1. About HDMI 19 9 Self-Diagnosis and special mode setting 21 9.1. Service Mode Summary Table 21 9.2. Servi

18、ce Mode Table 21 9.3. DVD Self Diagnostic Function-Error Code 26 9.4. Sales Demonstration Lock Function 28 9.5. Service Precautions 29 10 Assembling and Disassembling 30 10.1. Disassembly Flow Chart 31 10.2. Main Components and P.C.B. Locations 32 10.3. Disassembly of Top Cabinet 33 10.4. Disassembl

19、y of the DVD Lid (When taking out disc manually) 33 10.5. Disassembly of Front Panel Assembly 34 10.6. Disassembly of Music Port P.C.B, Mic P.C.B., FL P.C.B. & Top Button P.C.B. 34 10.7. Disassembly of DVD Mechanism Unit 35 10.8. Disassembly of Relay P.C.B. 35 10.9. Disassembly of Rear panel 35 10.1

20、0. Disassembly of HDMI Module P.C.B. 36 10.11. Disassembly of Scart P.C.B. 36 10.12. Disassembly of Main P.C.B., AC-Inlet P.C.B. & Tuner Extent P.C.B. 36 10.13. Disassembly of Digital Amp IC (IC5000) 36 10.14. Disassembly of Digital Amp IC (IC5400) 37 10.15. Disassembly of Regulator Diodes & Transis

21、tor 37 10.16. Disassembly of Switch Regulator IC (IC5701) 38 11 Service Position 39 11.1. Servicing position of the HDMI Module P.C.B. 39 11.2. Servicing position of the Main P.C.B. 39 12 Assembly and disassembly of Mechanism Unit 40 12.1. Disassembly Procedure 40 13 Measurements and Adjustments 46

22、13.1. Service Tools and Equipment 46 13.2. Important points in adjustment 46 13.3. Storing and handling of test discs 46 13.4. Optical adjustment 47 14 Abbreviations 48 15 Voltage and Waveform Chart 50 15.1. HDMI Module P.C.B. 50 15.2. Main P.C.B. 52 15.3. FL P.C.B., Scart P.C.B., Mic P.C.B. & Tray

23、Loading P.C.B. 54 15.4. Waveform Chart 55 16 Illustration of ICs, Transistors and Diodes 57 17 Wiring Connection Diagram 59 18 Block Diagram 61 19 Schematic Diagram Notes 69 20 Schematic Diagram 71 20.1. (A) Optical Pickup Unit & HDMI Module Circuit 71 20.2. (B) Main Circuit 78 20.3. (C) Power & AC-

24、inlet Circuit 83 20.4. (D) FL, Mic, Music Port, Top Button, Tuner Extent, Tray Loading, Relay & Scart Circuit 87 21 Printed Circuit Board 91 21.1. (A) HDMI Module P.C.B. 91 21.2. (B) Main/Power P.C.B. 92 21.3. (C) Tuner extent, AC-inlet, Tray Loading, FL, Music port & Top button P.C.B. 93 21.4. (D)

25、Scart, Mic & Relay P.C.B. 94 22 Basic Troubleshooting Guide 95 22.1. Basic Troubleshooting Guide for Traverse Unit (HDMI Module P.C.B) 95 22.2. Basic Troubleshooting Guide for HDMI AV output 96 23 Overall Block (HT895) 97 23.1. HT895 DVD Unit Block 98 23.2. HT895 Block (Analog Signal : DVD 5.1ch Pla

26、y Back Mode) 99 23.3. HT895 Block (Analog Signal : 2ch Analog Input Mode) 100 23.4. HT895 Power Supply Block 101 23.5. HT895 Power Block (SMPS) 102 24 Terminal Function of ICs 103 24.1. IC2018 (C2CBYY000292): Micro-processor IC 103 25 Exploded Views 104 25.1. Cabinet Parts Location 104 25.2. Packagi

27、ng 106 26 Replacement Parts List 107 26.1. Component Parts List 108 4 SA-HT895EE 1 Safety Precautions 1.1. GENERAL GUIDELINES 1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servic

28、ing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed. 3. After servicing, carry out the following leakage current checks to prevent the customer from being exposed to shock hazards. 1.1.1. LEAKAGE CURRENT COLD CHECK 1. Unplug th

29、e AC cord and connect a jumper between the two prongs on the plug. 2. Measure the resistance value, with an ohmmeter, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return

30、path to the chassis, the reading should be between 1M and 5.2M. When the exposed metal does not have a return path to the chassis, the reading must be. Figure 1 1.1.2. LEAKAGE CURRENT HOT CHECK (See Figure 1.) 1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for t

31、his check. 2. Connect a 1.5k, 10 watts resistor, in parallel with a 0.15F capacitors, between each exposed metallic part on the set and a good earth ground such as a water pipe, as shown in Figure 1. 3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the

32、 resistor. 4. Check each exposed metallic part, and measure the voltage at each point. 5. Reverse the AC plug in the AC outlet and repeat each of the above measurements. 6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may be

33、used to make the hot checks, leakage current must not exceed 1/2 milliamp. In case a measurement is outside of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer. 1.2. Before Repair and Adjustment D

34、isconnect AC power, discharge Power Supply Capacitors C5701, C5706, C5714, C5736, C5737 through a 10 , 10 W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices. After repairs are completed, restore power gradually using

35、a variac, to avoid overcurrent. Current consumption at AC 230 V, 50 Hz in NO SIGNAL mode (at volume minimum) should be 600 mA. 1.3. Protection Circuitry The protection circuitry may have operated if either of the following conditions are noticed: No sound is heard when the power is turned on. Sound

36、stops during a performance. The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are “shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used. 5 SA-HT895EE If this

37、 occurs, follow the procedure outlines below: 1. Turn off the power. 2. Determine the cause of the problem and correct it. 3. Turn on the power once again after one minute. Note: When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again

38、. 2 Prevention of Electro Static Discharge (ESD) to 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 of typical ES devices are integrat

39、ed 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 electro static discharge (ESD). 1. Immediately before handling any semiconductor component or semiconductor-equipped ass

40、embly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly eq

41、uipped 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 anti-static solder removal device. Some solder rem

42、oval devices not classified as anti-static (ESD protected) can generate electrical charge sufficient to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. 6. Do not remove a replacement ES device from its protective pack

43、age 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 removing the protective material from the leads of a replacement ES

44、 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 handling unpackaged replacement ES devices. (Oth

45、erwise 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 (ESD) sufficient to damage an ES device). 6 SA-HT895EE 3 Precaution of Laser Diode CAUTION : This product utilizers a class 1 laser. Invisible

46、 laser radiation is emitted from the optical pick up lens. When the unit is turned on: Wavelength : 662nm/785nm Maximum output radiation power from pick up : 100W/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

47、radiation from exposed laser diode is dangerous. 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. 7 SA-HT895EE 4 About Lead Free Solder (PbF) 4.1.

48、 Service caution based on legal restrictions 4.1.1. General description about Lead Free Solder (PbF) The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this equipment in considering the globally environmental conservation. T

49、he normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin (Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86F) more than that of the normal solder. Definition of PCB Lead Free Solder being used The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder. (See r