Panasonic-SAHT740GCP-htss-sm 电路图 维修手册.pdf

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1、lGeneral Power Source:AC 110V-127V/ 220V-240V, 50/ 60Hz Power consumption:155 W Dimensions (WHD):43070439.2 mm Mass:5 kg lAmplifier section RMS Output Power: Dolby Digital Mode lTotal RMS Dolby Digital mode Power:1000 W At 1kHz and total harmonic of 10% lFront:90 W/ Channel (4) lCenter:320 W/ Channe

2、l (4) lSurround:90 W/ Channel (4) At 100Hz and total harmonic of 10% lSubwoofer:320 W/ Channel (4) PMPO Output Power:7500W DIN Output Power: Dolby Digital Mode lTotal DIN Dolby Digital mode Power740 W At 1kHz and total harmonic of 1% lFront:65 W/ Channel (4) lCenter:240 W/ Channel (4) 2006 Panasonic

3、 AVC Networks Singapore Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. SA-HT740GCP Colour (S).Silver Type lSurround:65 W/ Channel (4) At 100Hz and total harmonic of 1% lSubwoofer:240 W/ Channel (4) DIN Output Power Stereo Mode lTotal DIN Stereo mode Power

4、360 W At 1kHz and total harmonic of 1% lFront:60 W/ Channel (4) At 100Hz and total harmonic of 1% lSubwoofer:240 W/ Channel (4) lPreset MemoryFM 15 stations AM/ MW 15 stations lFM tuner section (FM) Frequency Range:87.5-108.0MHz (50kHz step) Sensitivity:2.5V (IHF) S/N 26dB2.2V Antenna Terminals:75 (

5、unbalanced) lAM tuner section (AM/MW) Frequency Range:522-1629kHz (9kHz step) 520-1630kHz (10kHz step) AM Sensitivity S/N 20dB at 999kHz: 560V/m DVD Home Theater Sound System Specifications ORDER NO.MD0605182C3 RadioFans.CN 收音机爱 好者资料库 lPhone Jack: Terminal:Stereo 3.5 mm jack lFront M. Port: Sensitiv

6、ity:100mV (4.7k) Terminal (Input):Stereo 3.5 mm jack lDisc section Discs played 8 cm or 12 cm: (1) DVD DVD-Video, DVD-Audio (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, DVD-VR, MP3(*2,5), JPEG(*4,5)

7、(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 lNot compatible with Multiple Bit Rate (MBR) *4Exif Ver 2.1 JPEG

8、 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 or 4:4:4). Extremely long and thin pictures may not be displayed. *5The total combined maximum number of recognizable audio and picture contents and groups: 4000 audio and picture conte

9、nts and 400 groups. Pick up: Wavelength: lCD:785nm lDVD:662nm Laser power: lCD/DVD:CLASS 1M/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 kHz (96 kHz sampling) DVD-Audio:4

10、 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:NTSC Composite video output: Output level:1 Vp-p (75 ) Terminal:Pin jack (1 syst

11、em) S-video output: Y output level:1 Vp-p (75 ) C output level:NTSC; 0.286 Vp-p (75 ) TerminalS terminal (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) H

12、DMI AV output:19 pin type A connector, HDMI Ver.1.2a (EDID Ver.1.3) Power consumption in standby mode: approx 0.9W 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

13、model uses lead free solder (PbF). Mechanism: This model uses RC1 (Rotary Tray) mechanism. Refer to the original service manual for *1, *2, *3, *4. 2 SA-HT740GCP 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 6 2

14、 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices 6 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

15、Pickup Unit 10 5.2. 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 (SA-HT740) 14 7.3. Disc information 15 8 New Features 17 8.1. About HDMI 17 9 Self-Diagnosis and spec

16、ial mode setting 19 9.1. Service Mode Summary Table 19 9.2. Service Mode Table 19 9.3. DVD Self Diagnostic Function-Error Code 24 9.4. Sales Demonstration Lock Function 26 9.5. Service Precautions 26 10 Assembling and Disassembling 28 10.1. Disassembly Flow Chart 29 10.2. Main Components and P.C.B.

17、Locations 30 10.3. Disassembling the Top Cabinet 31 10.4. Disassembling the Front Panel Assembly 31 10.5. Disassembling the Tray Assembly 31 10.6. Disassembling the Rear Panel 32 10.7. Disassembling the Mechanism Base Assembly 32 10.8. Disassembling the FL & Head phone P.C.B. 32 10.9. Disassembling

18、the HDMI Module P.C.B. 33 10.10. Disassembling the Regulator P.C.B. 33 10.11. Disassembling the Main P.C.B. 33 10.12. Disassembling the AC-Inlet, Power, Sub Power & Voltage Selector P.C.B 33 10.13. Disassembly of Digital Amp IC 34 10.14. Disassembly of Regulator IC 34 CONTENTS Page Page 3 SA-HT740GC

19、P RadioFans.CN 收音机爱 好者资料库 10.15. Disassembly of Switch Regulator IC (IC5701) 34 10.16. Disassembly of the Tray Base Guide (L) and Tray Base Guide (R) 35 10.17. Disassembly of the Rotary Tray 35 10.18. Disassembly of the Traverse Unit 36 10.19. Assembly of Tray Assembly 38 11 Service Fixture and Tool

20、s 40 12 Service Positions 40 12.1. Checking & Repair Main P.C.B., Power P.C.B., HDMI Module P.C.B., FL and Head phone P.C.B. 40 13 Measurements and Adjustments 41 13.1. Service Tools and Equipment 41 13.2. Important points in adjustment 41 13.3. Storing and handling of test discs 41 13.4. Optical ad

21、justment 42 14 Abbrevations 43 15 Voltage and Waveform Chart 45 15.1. HDMI Module P.C.B. 45 15.2. Main P.C.B. 47 15.3. Power P.C.B. 48 15.4. FL P.C.B. 48 15.5. Loading Motor P.C.B., Tray Motor P.C.B., Sensor P.C.B., Regulator P.C.B. 49 15.6. Waveform Chart 50 16 Illustration of ICs, Transistors and

22、Diodes 51 17 Wiring Connection Diagram 53 18 Block Diagram 55 19 Schematic Diagram Notes 61 20 Schematic Diagram 63 20.1. (A) Optical Pickup Unit & HDMI Module Circuit 63 20.2. (B) Main Circuit 70 20.3. (C) Power, AC-inlet, Sub power & Voltage Selector Circuit 75 20.4. (D) FL, Headphone, Loading Mot

23、or, Tray Motor, Sensor, Regulator Circuit 78 21 Printed Circuit Board 81 21.1. (A) HDMI Module P.C.B. 81 21.2. (B) Main, AC-inlet & Sub Power P.C.B. 82 21.3. (C) Power P.C.B. 83 21.4. (E) FL, Headphone, Loading Motor, Tray Motor, Sensor, Regulator & Voltage Selector P.C.B. 84 22 Basic Troubleshootin

24、g Guide 85 22.1. Basic Troubleshooting Guide for Traverse Unit (HDMI Module P.C.B) 85 22.2. Basic Troubleshooting Guide for HDMI AV output 86 23 Overall Block for HT740 87 23.1. HT740 DVD Unit Block 88 23.2. HT740 Block (Analog Signal : DVD 5.1ch Play Back Mode) 89 23.3. HT740 Block (Analog Signal :

25、 2ch Analog Input Mode) 90 23.4. HT740 Power Supply Block 91 23.5. HT740 Power Block (SMPS) 92 24 Terminal Function of ICs 93 24.1. IC2001 (MN101C49GHF1): Micro-processor IC 93 25 Exploded Views 94 25.1. Cabinet Parts Location 94 25.2. Packaging 97 26 Replacement Parts List 98 26.1. Component Parts

26、List 99 4 SA-HT740GCP 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 servicing, see to it that all the protective devices such as insu

27、lation 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 the AC cord and connect a jumper between the two prongs on th

28、e 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 path to the chassis, the reading should be between 1M and 5

29、.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 this check. 2. Connect a 1.5k, 10 watts resistor, in paralle

30、l 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 resistor. 4. Check each exposed metallic part, and measure

31、 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 used to make the hot checks, leakage current must not excee

32、d 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 Disconnect AC power, discharge Power Supply Capacitors C5701

33、, C5702, C5705, C5706, C5736, C5737, C5772 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 a variac, to avoid overcurrent. Current consu

34、mption at AC 110-127V / 220-240 V, 50/ 60 Hz in NO SIGNAL mode volume minimal should be 750 mA. 5 SA-HT740GCP 1.2.1. Caution for fuse replacement 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 i

35、s 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 wires are “shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used. I

36、f 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 not operate unless the power is first turned off and then on

37、 again. 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 in

38、tegrated 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-equipp

39、ed assembly, 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 assem

40、bly equipped 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 sold

41、er removal 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 protectiv

42、e 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 comparable conductive material). 7. Immediately before removing the protective material from the leads of a replacem

43、ent ES 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

44、. (Otherwise 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-HT740GCP 7 SA-HT740GCP 3 Precaution of Laser Diode CAUTION: This unit utilizes a class 1

45、laser. Invisible laser radiation is emitted from the optical pickup lens. Wavelength: 662nm(DVD)/785nm(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

46、. Do not adjust the preset variable resistor 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 h

47、erein may result in hazardous radiation exposure. 8 SA-HT740GCP 4 About Lead Free Solder (PbF) 4.1. 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 print

48、ed circuit boards used for this equipment in considering the globally environmental conservation. The 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

49、 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 right figure) Service caution for repair work using Lead Free Solder (PbF) The lead free solder has to be used when repairing the equipment for which the lead free solder is used. (Definition: T