Panasonic-SAPT750PL-htss-sm 电路图 维修手册.pdf

《Panasonic-SAPT750PL-htss-sm 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Panasonic-SAPT750PL-htss-sm 电路图 维修手册.pdf（145页珍藏版）》请在收音机爱好者资料库上搜索。

1、? ?GENERAL Power Supply:AC 120 V, 60 Hz Power Consumption:131 W Dimensions (WHD):43075424 mm Mass:Main unit 5 kg Operating Temperature Range:+5C to +35C Operating Humidity Range:5% to 90% RH (no condensation) ? ?AMPLIFIER SECTION RMS Output Power: Dolby Digital Mode ? ?Total RMS Dolby Digital mode p

2、ower: 1000 W At 1 kHz and total harmonic of 10% ? ?Front Ch:125 W / Channel (3 ) ? ?Center Ch:250 W / Channel (6 ) ? ?Surround Ch:125 W / Channel (3 ) At 100 Hz and total harmonic of 10% ? ?Subwoofer Ch:250 W / Channel (6 ) FTC Output Power: Dolby Digital Mode ? ?Total FTC Dolby Digital mode power:

3、428 W At 120 Hz - 20 kHz and total harmonic of 1% ? ?Front Ch:63 W / Channel (3 ) ? ?Center Ch:113 W / Channel (6) ? ?Surround Ch:34 W / Channel (3) 2007 Matsushita Electric Industrial Co., Ltd. All rightsreserved.Unauthorizedcopyingand distribution is a violation of law. SA-PT750PL Colour (K).Black

4、 Type At 45 Hz - 120 Hz and total harmonic of 1% ? ?Subwoofer Ch:121 W / Channel (6) ? ?FM/AM TUNER, TERMINALS SECTION Preset Memory:FM 30 stations AM / MW 30 stations Frequency Modulation (FM) Frequency range:87.9-107.9 MHz (200-kHz step) 87.5-108.0 MHz (100-kHz step) Sensitivity:1.8 V (IHF) S/N 26

5、 dB:1.4 V Antenna terminals:75 (unbalanced) Amplitude Modulation (AM/MW): Frequency range:520-1710 kHz (10-kHz step) AM Sensitivity S/N 20 dB at 1000 kHz: 560 V/m Phone Jack: Terminal:Stereo, 3.5 mm jack Music Port (Front): Sensitivity:100 mV, 1.2 k Terminal (Input):Stereo, 3.5 mm jack ? ?DISC SECTI

6、ON Discs played 8 cm or 12 cm: (1) DVD (DVD-Video) DVD Home Theater Sound System Specifications ORDER NO. MD0706006CE RadioFans.CN 收音机爱 好者资料库 (2) DVD-RAM DVD-VR, MP3 (*2, 5), JPEG (*4, 5) (3) DVD-R DVD-Video, DVD-VR, MP3 (*2, 5), JPEG (*4, 5) (4) DVD-R DL (DVD-Video, DVD-VR) (5) DVD-RW DVD-Video, DV

7、D-VR, MP3 (*2, 5), JPEG (*4, 5) (6) +R, +RW (Video) (7) +R DL (Video) (8) CD, CD-R/RW CD-DA, Video CD, SVCD (*1), MP3 (*2, 5), WMA (*3, 5), JPEG (*4, 5), HighMAT Level 2 (Audio and Image) *1Conforming to IEC62107 *2MPEG-1 Layer 3, MPEG-2 Layer 3 *3Windows Media Audio Ver.9.0 L3 ?Not compatible with

8、Multiple Bit Rate (MBR) *4Exif Ver 2.1 JPEG Baseline files ?Picture resolution: between 160 x 120 and 6144 x 4096 pixels (Sub sampling is 4:0:0, 4:2:0, 4:2:2 or 4:4:4). Extremely long and narrow pictures may not be displayed. *5The total combined maximum number of recognizable audio and picture cont

9、ents and groups: 4000 audio and picture contents and 400 groups Pick Up: Wavelength: ? ?CD:785 nm ? ?DVD:662 nm Laser power: ? ?CD:CLASS 1M ? ?DVD:CLASS 1 Audio Output (Disc): Number of channels:5.1 ch (FL, FR, C, SL, SR, SW) ? ?VIDEO SECTION Video System:NTSC Composite Video Output: ? ?Output level

10、:1 Vp-p (75 ) ? ?Terminal:Pin jack (1 system) Component Video Output (480p/480i): ? ?Y output level:1 Vp-p (75 ) ? ?PBoutput level:0.7 Vp-p (75 ) ? ?PRoutput level:0.7 Vp-p (75 ) ? ?Terminal:Pin jack (Y: green, PB: blue, PR: red) (1 system) HDMI AV Output: ? ?Terminal:Type A connector (19-pin) Power

11、 Consumption in Standby Mode: approx. 0.5 W Note: 1.Specifications are subject to change without notice. Mass and dimensions 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 RC1U (Rot

12、ary tray) mechanism. Refer to the respective original service manuals for *1, *2, *3, *4, *5, *6. 2 SA-PT750PL RadioFans.CN 收音机爱 好者资料库 1 Safety Precautions 5 1.1. GENERAL GUIDELINES 5 1.2. Before Repair and Adjustment 5 1.3. Protection Circuitry 5 1.4. Safety Parts Information 6 2 Prevention of Elec

13、trostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices 7 3 Precaution of Laser Diode 8 4 About Lead Free Solder (PbF) 9 4.1. Service caution based on legal restrictions 9 5 Handling Precautions for Traverse Unit 10 5.1. Cautions to Be Taken in Handling the Optical Pickup Unit 10 5.2.

14、Grounding for electrostatic breakdown prevention 10 6 Accessories 12 7 Operation Procedures 13 7.1. Remote Control Key Buttons Operations 13 7.2. Main Unit Key Buttons Operations 14 7.3. Wireless Surround 15 7.4. Using the VIERA Link “HDAVI Control” 16 7.5. Using the Music Port 17 7.6. Disc Informat

15、ion 18 8 New Features 20 8.1. About HDMI 20 8.2. Wireless Features 22 9 Self-Diagnosis and Special Mode Setting 29 9.1. Service Mode Summary Table 29 9.2. Service Mode Table (Main Unit) 29 9.3. Wireless Service Mode Summary Table 39 9.4. Service Mode Table (Wireless) 40 9.5. DVD Self Diagnostic Func

16、tion-Error Code 42 9.6. Sales Demonstration Lock Function 44 9.7. Service Precautions 45 10 Assembling and Disassembling 47 10.1. Disassembly Flow Chart 49 10.2. Main Components and P.C.B. Locations 50 10.3. Disassembly of Top Cabinet 51 10.4. Disassembly of Tray Lid Assembly 51 10.5. Disassembly of

17、 Front Panel 51 10.6. Disassembly of Panel P.C.B. & Key P.C.B. 52 10.7. Dissassembly of Tray Base Assembly 52 10.8. Disassembly of Mechanism Base Assembly 53 10.9. Disassembly of Rear Panel 53 10.10. Disassembly of Wireless Adapter P.C.B. 54 10.11. Disassembly of Tray P.C.B. 54 10.12. Disassembly of

18、 D-Amp P.C.B 55 10.13. Disassembly of Digital Amp IC (IC5000) 55 10.14. Disassembly of DVD Module P.C.B. 56 10.15. Disassembly of Main P.C.B. 56 10.16. Disassembly of Regulator IC (IC2903) 57 10.17. Disassembly of SMPS & AC-Inlet P.C.B. 58 10.18. Disassembly of Switch Regulator IC (IC5701) 58 10.19.

19、 Disassembly of Regulator Diode (D5803) 59 10.20. Disassembly of Regulator Diode (D5801/D5802) 59 10.21. Disassembly of Regulator Diode (D5702) 60 10.22. Disassembly of Tray Guide (L) & Tray Guide (R) 60 10.23. Disassembly of Rotary Tray 61 10.24. Disassembly of Open Lock Gear 61 10.25. Disassembly

20、of Close Lock Gear 61 10.26. Disassembly of Tray Motor P.C.B. 62 10.27. Disassembly of Sensor P.C.B. 62 10.28. Disassembly of Traverse Unit 62 10.29. Disassembly of Pulley Gear 63 10.30. Disassembly of Loading Motor P.C.B. 64 10.31. Disassembly of Drive Gear (A) & Drive Gear (B) 64 10.32. Disassembl

21、y of Magnet Holder, Washer, Magnet & Clamper 64 10.33. Disassembly of Support Piece, Change Lever, Slide Plate (L) & Slide Plate (R) 65 10.34. Disassembly of Cam Gear 66 10.35. Assembly of Tray Base Assembly 66 11 Service Fixture and Tools 68 12 Service Positions 68 12.1. Checking & Repair Panel P.C

22、.B. & Key P.C.B. 68 12.2. Checking & Repair Main P.C.B. 68 12.3. Checking & Repair SMPS P.C.B. 69 12.4. Checking & Repair D-Amp P.C.B. 69 12.5. Checking & Repair DVD Module P.C.B. 70 13 Measurements and Adjustments 71 13.1. Service Tools and Equipment 71 13.2. Important points in adjustment 71 13.3.

23、 Storing and handling of test discs 71 13.4. Optical adjustment 72 14 Abbreviations 73 15 Voltage and Waveform Chart 75 15.1. DVD Module P.C.B. 75 15.2. Main P.C.B. 77 15.3. D-Amp P.C.B. 78 15.4. SMPS P.C.B. 78 15.5. Panel P.C.B. 78 CONTENTS Page Page 3 SA-PT750PL RadioFans.CN 收音机爱 好者资料库 15.6. Tray,

24、 Loading Motor, Tray Motor & Sensor P.C.B. 79 15.7. Waveform Chart 80 16 Illustration of ICs, Transistors and Diodes 82 17 Wiring Connection Diagram 83 18 Block Diagram 85 18.1. System Control 85 18.2. DVD (Servo) 86 18.3. DVD (Video/Audio) 87 18.4. DVD Interface 88 18.5. Audio 89 18.6. Audio Digita

25、l Amp 90 18.7. Power 91 19 Schematic Diagram Notes 93 20 Schematic Diagram 95 20.1. DVD Module (DV5/HDMI) Circuit 95 20.2. Main Circuit & Panel 100 20.3. D-Amp & SMPS Circuit 105 20.4. Tray Circuit 109 20.5. Key, Wireless Adapter, AC-Inlet & Loading Motor Circuit 110 20.6. Tray Motor, Sensor & Optic

26、al Pickup Unit Circuit 111 21 Printed Circuit Board 113 21.1. DVD Module P.C.B. 113 21.2. Main P.C.B. 114 21.3. Panel, Key & Wireless Adapter P.C.B. 115 21.4. D-Amp P.C.B. 116 21.5. SMPS P.C.B. 117 21.6. AC-Inlet, Tray, Loading Motor, Tray Motor & Sensor P.C.B. 118 22 Basic Troubleshooting Guide 119

27、 22.1. Basic Troubleshooting Guide for Traverse Unit (DVD Module P.C.B) 119 22.2. Basic Troubleshooting Guide for HDMI AV output 120 23 Overall Block Diagram for PT750 122 23.1. SC-PT750 Main Circuit Block 122 23.2. SC-PT750 SMPS Circuit Block 123 24 Terminal Function of ICs 124 24.1. IC2001 (C2CBYY

28、000472): System Control IC 124 25 Exploded Views 125 25.1. Cabinet Parts Location 127 25.2. Packaging 129 26 Replacement Parts List 130 26.1. Component Parts List 131 27 Schematic Diagram for printing with letter size 144 4 SA-PT750PL 1 Safety Precautions 1.1. GENERAL GUIDELINES 1. When servicing, o

29、bserve 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 servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed. 3. After servicing,

30、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 the 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

31、 and each exposed metallic cabinet part on the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return 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 mus

32、t be 1.1.2. LEAKAGE CURRENT HOT CHECK 1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this 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

33、pipe, as shown in Figure 1. 3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the 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.

34、 The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may be 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 hazar

35、d, and the equipment should be repaired and rechecked before it is returned to the customer. Figure 1 1.2. Before Repair and Adjustment Disconnect AC power to discharge unit AC Capacitors as such C5700, C5701, C5703, C5704, C5705 through a 10 , 10 W resistor to ground. Caution: DO NOT SHORT-CIRCUIT

36、DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices. After repairs are completed, restore power gradually using a variac, to avoid overcurrent. Current consumption at AC 120 V, 60 Hz in NO SIGNAL mode volume minimal should be 900 mA. 1.3. Protection Circuitry T

37、he protection circuitry may have operated if either of the following conditions are noticed: No sound is heard when the power is turned on. Sound stops during a performance. The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wi

38、res are 5 SA-PT750PL “shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used. If this 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

39、 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. 1.4. Safety Parts Information Safety Parts List: There are special components used in this equipment which are important for safety. These parts are mar

40、ked byin the Schematic Diagrams & Replacement Parts List. It is essential that these critical parts should be replaced with manufacturers specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of manufacturer. Table 1 Reference No.Part No.Part N

41、ame & DescriptionRemarks 342RAE2022Z-SDT6J TRAVERSE UNITM PC5701B3PBA0000402PHOTO COUPLERM PC5702B3PBA0000402PHOTO COUPLERM PC5720B3PBA0000402PHOTO COUPLERM PC5799B3PBA0000402PHOTO COUPLERM D5701B0FBAR000041DIODEM DZ5701ERZV10V511CSZENERM TH5701D4CAA5R10001THERMISTORM TH5860D4CC11040013THERMISTORM L

42、2101J0JBC0000015CHIP INDUCTORM L2201J0JBC0000015CHIP INDUCTORM L2802J0JBC0000015CHIP INDUCTORM L2803J0JBC0000015CHIP INDUCTORM L2804J0JBC0000015CHIP INDUCTORM L2805J0JBC0000015CHIP INDUCTORM L5001G0B9R5K00003LINE CHOKE COILM L5002G0B9R5K00003LINE CHOKE COILM L5201G0B9R5K00003LINE CHOKE COILM L5301G0

43、B9R5K00003LINE CHOKE COILM L5500J0JKB0000020EMI BEAD COREM L5501J0JKB0000020EMI BEAD COREM L5702ELF22V035BCOILM L5721J0JKB0000020EMI BEAD COREM T2900G4D1A0000117TRANSFORMERM T5701ETS42BM15GADTRANSFORMERM T5751ETS19AB236AGTRANSFORMERM F1K5D802APA008FUSEM FP2902K5H5012A0010FUSE PROTECTORM P5701K2AB2B0

44、00010JACK AC INLETM A2K2CB2CB00021AC CORDM C5700F1BAF10200201000PM C5701ECQU2A334MLA0.33M C5703ECQU2A224MLC0.22M C5704F1BAF10200201000PM C5705F1BAF10200201000PM 6 SA-PT750PL 2 Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) dev

45、ices can be damaged easily by static electricity. Such components commonly are called 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

46、reduce the incidence of component damage caused by electrostatic discharge (ESD). 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available di

47、scharging 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 equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup

48、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 removal devices not classified as anti-static (ESD protected) can generate electrical charge sufficient to damage ES devices. 5. Do n

49、ot 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 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 comparabl