Panasonic-SAHT870E-htss-sm 电路图 维修手册.pdf

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1、file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0000000000.html Service Manual TOP NEXT ORDER NO.MD0403138C2 DVD Home Theater Sound System G SA-HT870E SA-HT870EB SA-HT870EG Colour (S).Silver Type Specifications General Power Source: For (E, EG) areas: AC 230 V, 50 H

2、z For (EB) area: AC 230-240 V, 50 Hz Power consumption: 25 W Dimensions (W H D): 430 68 359.2 mm Mass: 3.2 kg Amplifier section RMS Output Power: Dolby Digital Mode Total RMS Dolby Digital mode Power: 1000 W At 1kHz and total harmonic of 10% Front: 170 W/ Channel (6 ) Center: 260 W/ Channel (4 ) Sur

3、round: 70 W/ Channel (4 ) At 100Hz and total harmonic of 10% Active subwoofers: 260 W/ Channel (4 ) file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0000000000.html (1 of 4)08-08-29 18:01:32 RadioFans.CN 收音机爱 好者资料库 file:/C|/Documents and Settings/lopez/Pulpit/s/PANAS

4、ONIC SA-HT870E_EG_EB/ALL/SVC/s0000000000.html DIN Output Power: Dolby Digital Mode: Total DIN Dolby Digital mode Power: 750 W At 1kHz and total harmonic of 1% Front: 140 W/ Channel (6 ) Center: 180 W/ Channel (4 ) Surround: 55 W/ Channel (4 ) At 100Hz and total harmonic of 1% Subwoofer: 180 W/ Chann

5、el (4 ) FM tuner section Frequency Range: 87.5-108.0MHz (50kHz in step) Sensitivity: 2 V (IHF) S/ N 26dB 2 V Antenna Terminal: 75 (non balance) AM tuner section (AM/ MW) Frequency Range: 522-1629kHz (9kHz in step) 520-1630kHz (10kHz in step) AM Sensitivity S/ N 20dB at 999kHz: 560 V/ m Phone Jack: T

6、erminal: Stereo 3.5mm jack Disc section Discs played 8 cm or 12 cm: (1) DVD-RAM (DVD-VR compatible, JPEG formatted discs) (2) DVD-Audio (3) DVD-Video (4) DVD-R (DVD-Video compatible) (5) CD-Audio (CD-DA) (6) Video CD (7) SVCD (Conforming to IEC62107) (8) CD-R/ CD-RW (CD-DA, Video-CD, SVCD, MP3, WMA,

7、 JPEG formatted discs) (9) MP3/ WMA Maximum number of recognizable audio and picture contents and groups: 4000 audio and picture contents and 400 groups Compatible compression rate: MP3: between 32 kbps and 320 kbps WMA: between 48 kbps and 320 kbps (10) JPEG Exif Ver 2.1 JPEG Baseline files Picture

8、 resolution: between 320 x 240 and 6144 x 4096 pixels (sub sampling is 4:2:2 or 4:2:0) (11) HighMAT Level 2 (Audio and lmage) Pick up: Source of light beam: Semiconductor Laser Wavelength: CD: 785nm DVD: 662nm Audio output (DISC): Number of channels: 5.1 ch (FL, FR, C, SL, SR, SW) Audio performance

9、(measured at LINE OUT terminal): Frequency response: DVD (linear audio): 4 Hz-22 kHz (48 kHz sampling) 4 Hz-44 kHz (96 kHz sampling) DVD-Audio: 4 Hz-88 kHz (192 kHz sampling) file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0000000000.html (2 of 4)08-08-29 18:01:32 R

10、adioFans.CN 收音机爱 好者资料库 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0000000000.html CD-Audio: 4 Hz-20 kHz S/ N ratio: CD-Audio: 95 dB Dynamic range: DVD (linear audio): 95 dB CD-Audio: 93 dB Total harmonic distortion: CD-Audio: 0.005% Video section Video system:

11、Signal system: PAL 625/ 50, PAL 525/ 60, NTSC Composite video output: 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 ) Terminal S terminal (1 system) Component video output (480P/ 480I): Y

12、output level: 1 Vp-p (75 ) P B output level: 0.7 Vp-p (75 ) P R output level: 0.7 Vp-p (75 ) Terminal: Pin jack (Y: green, P B : blue, P R : red) (1 system) Power consumption in standby mode: approx 0.7W Note: 1. Specifications are subject to change without notice. Mass and dimensions are approximat

13、e. 2. Total harmonic distortion is measured by the digital spectrum analyzer. Solder: This model uses lead free solder (PbF). file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0000000000.html (3 of 4)08-08-29 18:01:32 RadioFans.CN 收音机爱 好者资料库 file:/C|/Documents and Set

14、tings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0000000000.html 2004 Panasonic AVC Networks Singapore Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. TOP NEXT file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0000000

15、000.html (4 of 4)08-08-29 18:01:32 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0100000000 x.html 1 Use of Active Subwoofer TOP PREVIOUS NEXT 1.1 Checking Player when Active Subwoofer is not used TOP PREVIOUS NEXT file:/C|/Documents and Settings/lopez/Pulpit/s/PA

16、NASONIC SA-HT870E_EG_EB/ALL/SVC/s0100000000 x.html08-08-29 18:01:41 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0101000000.html 1.1 Checking Player when Active Subwoofer is not used TOP PREVIOUS NEXT 1. This unit uses the active subwoofer to supply the power of

17、the component, and the active subwoofer should be connected to the component to check operational conditions of the component. 2. If the active subwoofer is not available due to repair of the unit, use the following equipment. file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/

18、ALL/SVC/s0101000000.html (1 of 2)08-08-29 18:01:48 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0101000000.html Jig product number: RFKZ0182 (110V, 127V, 220V, 230V-240V for overseas domestic use) TOP PREVIOUS NEXT file:/C|/Documents and Settings/lopez/Pulpit/s/P

19、ANASONIC SA-HT870E_EG_EB/ALL/SVC/s0101000000.html (2 of 2)08-08-29 18:01:48 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0200000000 x.html 2 Safety Precautions TOP PREVIOUS NEXT 2.1 GENERAL GUIDELINES 2.1.1 LEAKAGE CURRENT COLD CHECK 2.1.2 LEAKAGE CURRENT HOT CHE

20、CK (See Figure 1 .) TOP PREVIOUS NEXT file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0200000000 x.html08-08-29 18:01:52 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0201000000.html 2.1 GENERAL GUIDELINES TOP PREVIOUS NEXT 1. Whe

21、n 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 insulation barriers, insulation papers shields are properly installed. 3. Aft

22、er servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards. 2.1.1 LEAKAGE CURRENT COLD CHECK 2.1.2 LEAKAGE CURRENT HOT CHECK (See Figure 1 .) TOP PREVIOUS NEXT file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0

23、201000000.html08-08-29 18:01:55 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0201010000.html 2.1.1 LEAKAGE CURRENT COLD CHECK TOP PREVIOUS NEXT 1. Unplug the AC cord and connect a jumper between the two prongs on the plug. 2. Measure the resistance value, with an

24、 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 thechassis,the reading should be between 1M and 5.2M. When the exposed metal does not have a return

25、 path to the chassis, the reading must be . Figure 1 TOP PREVIOUS NEXT file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0201010000.html08-08-29 18:01:59 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0201020000.html 2.1.2 LEAKAGE CU

26、RRENT HOT CHECK (See Figure 1 .) TOP PREVIOUS NEXT 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 suc

27、h 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 the voltage at each point. 5. Reverse the AC plug in the AC outlet and repeat each of the above me

28、asurements. 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 exceed 1/2 milliamp. In case a measurement is outsideofthe limits specified, there is a possibility of a

29、 shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer. TOP PREVIOUS NEXT file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0201020000.html08-08-29 18:02:01 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT

30、870E_EG_EB/ALL/SVC/s0300000000 x.html 3 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices TOP PREVIOUS NEXT Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES

31、) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistorsand semiconductorchip 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 s

32、emiconductor 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 dischargingESDwrist strap, which should be removed for potential shock reasons prior to applying power to the unit under

33、 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 or exposure of the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an

34、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 not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. 6. Do not remov

35、e 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 comparableconductivematerial). 7. Immediately before removing the protec

36、tive material from the leads of a replacement 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. file:/C|/Documents and Settings/

37、lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0300000000 x.html (1 of 2)08-08-29 18:02:02 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0300000000 x.html 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion suc

38、h as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD)sufficientto damage an ES device). TOP PREVIOUS NEXT file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0300000000 x.html (2 of 2)08

39、-08-29 18:02:02 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0400000000 x.html 4 Before Repair and Adjustment (Using Active Subwoofer) TOP PREVIOUS NEXT Disconnect AC power, discharge Power Supply Capacitors C546C549 through a 10 , 10 W resistor to ground. DO NOT

40、 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 consumption at AC 230-240 V, 50 Hz in NO SIGNAL mode should be 1000 mA. TOP PREVIOUS NEXT file

41、:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0400000000 x.html08-08-29 18:02:03 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0500000000 x.html 5 Protection Circuitry TOP PREVIOUS NEXT The protection circuitry may have operated if

42、either of the following conditions are noticed: G No sound is heard when the power is turned on. G 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

43、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 after one minute. Note: When the protection circuitry

44、 functions, the unit will not operate unless the power is first turned off and then on again. TOP PREVIOUS NEXT file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0500000000 x.html08-08-29 18:02:05 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_E

45、B/ALL/SVC/s0600000000 x.html 6 Precaution of Laser Diode TOP PREVIOUS NEXT TOP PREVIOUS NEXT file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0600000000 x.html08-08-29 18:02:06 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s07000000

46、00 x.html 7 About Lead Free Solder (PbF) TOP PREVIOUS NEXT Distinction of PbF PCB: PCBs (manufactured) using lead free solder will have a Pbf stamp on the PCB. Caution: G Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70F (30 - 40C) higher. Please

47、 use a high temperature soldering iron. In case of the soldering iron with temperature control,pleaseset it to 700 20F (370 10C). G 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 the pins or so

48、lder area, and be sure to heat the soldering points with the Pb free solder until it melts enough. TOP PREVIOUS NEXT file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0700000000 x.html08-08-29 18:02:11 file:/C|/Documents and Settings/lopez/Pulpit/s/PANASONIC SA-HT870E_EG_EB/ALL/SVC/s0800000000o.html 8 General Description TOP PREVIOUS NEXT 8.1