Panasonic-SAPT450EB-htss-sm 电路图 维修手册.pdf

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1、lGENERAL Power Supply:AC 230-240 V, 50 Hz Power Consumption:135 W Power Consumption in Standby Mode: approx. 0.8 W Dimensions (WHD):43060363 mm Mass:Main unit approx. 3.5 kg Operating Temperature Range:+5C to +35C (+41F to +95F) Operating Humidity Range:5% to 90% RH (no condensation) lAMPLIFIER SECT

2、ION RMS Output Power: Dolby Digital Mode lTotal RMS Dolby Digital mode power: 1000 W At 1 kHz and total harmonic of 10% lFront Ch:125 W / Channel (3 ) lCenter Ch:250 W / Channel (6 ) lSurround Ch:125 W / Channel (3 ) At 100 Hz and total harmonic of 10% lSubwoofer Ch:250 W / Channel (6 ) DIN Output P

3、ower: Dolby Digital Mode lTotal DIN Dolby Digital mode power: 2007 Matsushita Electric Industrial Co., Ltd.All rightsreserved.Unauthorizedcopyingand distribution is a violation of law. SA-PT450EB Colour (K).Black Type 590 W At 1 kHz and total harmonic of 1% lFront Ch:75 W / Channel (3 ) lCenter Ch:1

4、45 W / Channel (6 ) lSurround Ch:75 W / Channel (3 ) At 100 Hz and total harmonic of 1% lSubwoofer Ch:145 W / Channel (6 ) lFM TUNER, TERMINALS SECTION Preset Memory:FM 30 stations Frequency Modulation (FM) Frequency range:87.50-108.00 MHz (50-kHz step) Sensitivity:1.8 V (IHF) S/N 26 dB:1.4 V Antenn

5、a terminals:75 (unbalanced) Phone Jack: Terminal:Stereo, 3.5 mm jack Front Music Port: Sensitivity:100 mV, (1.4 k) Terminal:Stereo, 3.5 mm jack lDISC SECTION Discs played (8 cm or 12 cm): (1)DVD DVD-Video DVD Home Theater Sound System Specifications ORDER NO. MD0704033CE RadioFans.CN 收音机爱 好者资料库 (2)D

6、VD-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, DVD-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

7、), HighMAT Level 2 (Audio and Image) *1Conforming to IEC62107 *2MPEG-1 Layer 3, MPEG-2 Layer 3 *3Windows Media Audio Ver.9.0 L3 lNot compatible with Multiple Bit Rate (MBR) *4Exif 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,

8、 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 contents and groups: 4000 audio and picture video contents and 400 groups. Pick Up: Wavelength: lCD:785 nm lDVD:662 nm Laser power: lCD:CLASS 1M lDVD:CLAS

9、S 1 Audio Output (Disc): Number of channels:5.1 ch (FL, FR, C, SL, SR, SW) lVIDEO SECTION Video System:PAL 625/50, PAL 525/60, NTSC Composite Video Output: lOutput level:1 Vp-p (75 ) lTerminal:Scart jack (1 system) S-video Output: lY output level:1 Vp-p (75 ) lC output level:PAL; 0.3 Vp-p (75 ) NTSC

10、; 0.286 Vp-p (75 ) lTerminalScart jack (1 system) Component Video Output: (NTSC: 480p/480i, PAL: 576p/576i) lY output level:1 Vp-p (75 ) lPBoutput level:0.7 Vp-p (75 ) lPRoutput level:0.7 Vp-p (75 ) lTerminal:Pin jack (Y: green, PB: blue, PR: red) (1 system) RGB Video Output: lR output level:0.7 Vp-

11、p (75 ) lG output level:0.7 Vp-p (75 ) lB output level:0.7 Vp-p (75 ) lTerminal:Scart jack (1 system) HDMI AV Output: lTerminal:Type A connector (19 pin) This unit supports “HDAVI Control 2” function. Note: 1.Specifications are subject to change without notice. Mass and dimensions are approximate. 2

12、.Total harmonic distortion is measured by the digital spectrum analyzer. Solder: This model uses lead free solder (PbF). Mechanism: This model uses DL2S (Single tray) mechanism. Refer to the original service manual for *1, *2, *3, *4 2 SA-PT450EB RadioFans.CN 收音机爱 好者资料库 1 Safety Precautions 5 1.1. G

13、ENERAL GUIDELINES 5 1.2. Before Repair and Adjustment 5 1.3. Protection Circuitry 5 1.4. Safety Parts Information 6 1.5. Caution for AC Cord 7 2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices 8 3 Precaution of Laser Diode 9 4 About Lead Free Solder (PbF) 10

14、CONTENTS Page Page 3 SA-PT450EB RadioFans.CN 收音机爱 好者资料库 4.1. Service caution based on legal restrictions 10 5 Handling Precautions for Traverse Unit 11 5.1. Cautions to Be Taken in Handling the Optical Pickup Unit 11 5.2. Grounding for electrostatic breakdown prevention 11 6 Accessories 13 7 Operati

15、on Procedures 14 7.1. Remote Control Key Buttons Operations 14 7.2. Main Unit Key Buttons Operations 15 7.3. Using the VIERA Link 滴 DAVI Control 剩 16 7.4. Music Port Connection and Operation 17 7.5. Audio & Video Connections 18 7.6. Disc Information 20 8 New Features 22 8.1. About HDMI 22 9 Self-Dia

16、gnosis and Special Mode Setting 24 9.1. Service Mode Summary Table 24 9.2. Service Mode Table 24 9.3. DVD Self Diagnostic Function-Error Code 32 9.4. Sales Demonstration Lock Function 35 9.5. Service Precautions 36 10 Assembling and Disassembling 37 10.1. Disassembly Flow Chart 38 10.2. Main Compone

17、nts and P.C.B. Locations 39 10.3. Disassembly of Top Cabinet 40 10.4. Disassembly of the DVD Lid (When taking out disc manually) 40 10.5. Disassembly of Front Panel 41 10.6. Disassembly of Volume P.C.B. 41 10.7. Disassembly of Panel P.C.B. 42 10.8. Disassembly of Scart P.C.B. 42 10.9. Disassembly of

18、 Rear Panel 42 10.10. Disassembly of DVD Mechanism Unit 43 10.11. Disassembly of Relay P.C.B. 43 10.12. Disassembly of DVD Module P.C.B. 43 10.13. Disassembly of Main P.C.B. 44 10.14. Replacement of Regulator IC (IC2903) 45 10.15. Disassembly of D-Amp P.C.B. 45 10.16. Replacement of Digital Amp IC (

19、IC5000) 46 10.17. Disassembly of SMPS & AC-Inlet P.C.B. 46 10.18. Replacement of Switch Regulator IC/Diode (IC5701/D5702) 47 10.19. Replacement of Regulator Diode (D5801/D5802) 47 10.20. Replacement of Regulator Diode (D5803) 48 11 Assembly and disassembly of DVD Mechanism Unit 49 11.1. Disassembly

20、Procedure 49 12 Service Position 54 12.1. Checking & Repairing Scart P.C.B. 54 12.2. Checking & Repairing Panel P.C.B. 54 12.3. Checking & Repairing Main P.C.B. 54 12.4. Checking & Repairing D-Amp P.C.B. 55 12.5. Checking & Repairing DVD Module P.C.B. 55 12.6. Checking & Repairing SMPS P.C.B. 55 13

21、Measurements and Adjustments 57 13.1. Service Tools and Equipment 57 13.2. Important points in adjustment 57 13.3. Storing and handling of test discs 57 13.4. Optical adjustment 58 14 Abbreviations 59 15 Voltage and Waveform Chart 61 15.1. DVD Module P.C.B. 61 15.2. Main P.C.B. 63 15.3. D-Amp P.C.B.

22、 64 15.4. SMPS P.C.B. 64 15.5. Panel P.C.B. 65 15.6. Scart P.C.B. 65 15.7. Waveform Chart 66 16 Illustration of ICs, Transistors and Diodes 68 17 Wiring Connection Diagram 69 18 Block Diagram 71 18.1. System Control 71 18.2. DVD (Servo) 72 18.3. DVD (Audio) 73 18.4. DVD (Video) 74 18.5. DVD (HDMI) 7

23、5 18.6. Audio 76 18.7. Audio Digital Amp 77 18.8. Power 78 19 Schematic Diagram Notes 79 20 Schematic Diagram 81 20.1. DVD Module (DV5/HDMI) Circuit 81 20.2. Main & Panel Circuit 86 20.3. D-Amp & SMPS Circuit 91 20.4. Scart Circuit 95 20.5. Volume, AC-Inlet, Relay, Tray Loading & Optical Pickup Unit

24、 Circuit 96 21 Printed Circuit Board 99 21.1. DVD Module P.C.B. 99 21.2. Main P.C.B. 100 21.3. Panel & Volume P.C.B. 101 21.4. D-Amp P.C.B. 102 21.5. SMPS P.C.B. 103 21.6. AC-Inlet, Scart, Relay & Tray Loading P.C.B. 104 22 Basic Troubleshooting Guide 105 22.1. Basic Troubleshooting Guide for Traver

25、se Unit (DVD Module P.C.B) 105 22.2. Basic Troubleshooting Guide for HDMI AV output 106 23 Overall Block Diagram for PT450 108 23.1. SC-PT450 Simplified Block 108 23.2. SC-PT450 Power Block 109 23.3. SC-PT450 SMPS Block 110 24 Terminal Function of ICs 111 24.1. IC2001 (C2CBYY000418): System Control

26、IC 111 25 Exploded Views 112 25.1. Cabinet Parts Location 113 25.2. Packaging 115 26 Replacement Parts List 116 26.1. Component Parts List 117 4 SA-PT450EB 1 Safety Precautions 1.1. GENERAL GUIDELINES 1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts

27、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, carry out the following leakage current checks to prevent the customer from bei

28、ng 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 and each exposed metallic cabinet part on the equipment such as screwheads, co

29、nnectors, 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 must be 1.1.2. LEAKAGE CURRENT HOT CHECK 1. Plug the AC cord directly into the AC

30、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 pipe, as shown in Figure 1. 3. Use an AC voltmeter, with 1000 ohms/volt or more

31、 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. The potential at any point should not exceed 0.75 volts RMS. A leakage current

32、 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 hazard, and the equipment should be repaired and rechecked before it is returned to

33、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 DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid st

34、ate devices. After repairs are completed, restore power gradually using a variac, to avoid overcurrent. Current consumption at AC 240 V, 50 Hz in NO SIGNAL mode volume minimal should be 600 mA. 1.3. Protection Circuitry The protection circuitry may have operated if either of the following conditions

35、 are noticed: No sound is heard when the power is turned on. 5 SA-PT450EB Sound 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 th

36、an 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 after one minute. Note: When the protection circuitry functions, the unit will

37、 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 marked byin the Schematic Diagrams & Replacement Parts List. It is essential that

38、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 Name & DescriptionRemarks 340RAE2024Z-STRAVERSE UNITM PC5701B3PBA0000402PHOTO CO

39、UPLERM PC5702B3PBA0000402PHOTO COUPLERM PC5720B3PBA0000402PHOTO COUPLERM PC5799B3PBA0000402PHOTO COUPLERM D5701B0FBAR000041DIODEM DZ5701ERZV10V511CSZENERM TH5701D4CAC8R00002THERMISTORM TH5860D4CC11040013THERMISTORM L2101J0JBC0000015CHIP INDUCTORM L2201J0JBC0000015CHIP INDUCTORM L2802J0JBC0000015CHIP

40、 INDUCTORM L2803J0JBC0000015CHIP INDUCTORM L2804J0JBC0000015CHIP INDUCTORM L5001G0B9R5K00003LINE CHOKE COILM L5002G0B9R5K00003LINE CHOKE COILM L5201G0B9R5K00003LINE CHOKE COILM L5301G0B9R5K00003LINE CHOKE COILM L5401G0B9R5K00003LINE CHOKE COILM L5402G0B9R5K00003LINE CHOKE COILM L5701ELF15N035ANLINE

41、FILTERM L5702ELF22V035BCOILM L6101J0JBC0000019CHIP INDUCTORM L6201J0JBC0000019CHIP INDUCTORM L6801J0JBC0000019CHIP INDUCTORM L6904J0JBC0000019CHIP INDUCTORM L6905J0JBC0000019CHIP INDUCTORM L6906J0JBC0000019CHIP INDUCTORM L6907J0JBC0000019CHIP INDUCTORM L6908J0JBC0000019CHIP INDUCTORM L6909J0JBC00000

42、19CHIP INDUCTORM T2900G4D1A0000117SWITCHING TRANSFORMERM T5701ETS42BN1A6ADMAIN TRANSFORMERM T5751ETS19AB236AGBACK-UP TRANSFORMERM F1K5D502BNA005FUSEM FP2900K5G401A00008FUSE PROTECTORM P5701K2AA2B000015JACK AC INLETM A2K2CT3CA00004AC CORDM C5700F1BAF10200201000PM C5701ECQU2A334MLA0.33M C5703ECQU2A104

43、MLC0.1M C5704F1BAF10200201000PM C5705F1BAF10200201000PM 6 SA-PT450EB 1.5. Caution for AC Cord For your safety, please read the following text carefully. This appliance is supplied with a moulded three pin mains plug for your safety and convenience. Should the fuse need to be replaced please ensure t

44、hat the replacement fuse has a rating of 5-ampere and that it is approved by ASTA or BSI to BS1362. Check for the ASTA mark or the BSI mark on the body of the fuse. If you lose the fuse cover the plug must not be used until a replacement cover is obtained. A replacement fuse cover can be purchased f

45、rom your local dealer. CAUTION! IF THE FITTED MOULDED PLUG IS UNSUITABLE FOR THE SOCKET OUTLET IN YOUR HOME THEN THE FUSE SHOULD BE REMOVED AND THE PLUG CUT OFF AND DISPOSED OF SAFELY. THERE IS A DANGER OF SEVERE ELECTRICAL SHOCK IF THE CUT OFF PLUG IS IN SERTED INTO ANY 13-AMPERE SOCKET. IMPORTANT

46、The wires in this mains lead are coloured in accor dance with the following code: Blue: Neutral, Brown: Live. As these colours may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: The wire which is coloured Blue must be connected to the terminal w

47、hich is marked with the letter N or col oured Black or Blue. The wire which is coloured Brown must be connected to the terminal which is marked with the letter L or coloured Brown or Red. WARNING: DO NOT CONNECT EITHER WIRE TO THE EARTH TERMINAL WHICH IS MARKED WITH THE LETTER E, BY THE EARTH SYMBOL

48、 OR COLOURED GREEN OR GREEN/YELLOW. THIS PLUG IS NOT WATERPROOF KEE P DRY. Before use Remove the connector cover. 1. Open the fuse cover with a screwdriver. Figure A Figure B 2. Replace the fuse and close or attach the fuse cover. Figure A Figure B 7 SA-PT450EB 2 Prevention of Electro Static Dischar

49、ge (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 integrated circuits and some field-effect transistors and semiconductor chip components. The following techniques should be used to help reduce the incidence of c