Panasonic-SAHR45E-avr-sm 电路图 维修手册.pdf

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1、nAMPLIFIER SECTION RMS output power: Dolby Digital Mode T.H.D. 10% (Each channel driven) 1 kHz front CH 150 W per channel (6 ) 1 kHz surround CH 80 W per channel (4 ) 1 kHz center CH 80 W per channel (4 ) Total RMS output power540 W RMS output power: STEREO Mode T.H.D. 10% 1 kHz front CH 150 W per c

2、hannel (6 ) Total harmonic distortion Half power at 1 kHz (Front CH)0.5% (6 ) Input sensitivity TV, DVR/DVD-P, GAME/AUX450 mV, IHF66 MUSIC PORT250 mV, IHF66 S/N at rated power (6 ) TV, DVR/DVD-P, GAME/AUX 80 dB (85 dB, IHF66) MUSIC PORT 70 dB (85 dB, IHF66) Input impedance TV, DVR/DVD-P, GAME/AUX, M

3、USIC PORT 47 k Tone controls 2007 Matsushita Electric Industrial Co. Ltd. All rightsreserved.Unauthorizedcopyingand distribution is a violation of law. SA-HR45E SA-HR45EG Colour (S).Silver Type (K).Black Type BASS50 Hz, +10 to -10 dB TREBLE20 kHz, +10 to -10 dB Load impedance Front (L/R)6 to 8 Surro

4、und (L/R)4 to 8 Center4 to 8 Digital input OPTICAL2 COAXIAL1 nFM TUNER SECTION Frequency range 87.50 MHz to 108.00 MHz Sensitivity S/N 30 dB1.9 V/75 S/N 26 dB1.8 V/75 S/N 20 dB1.6 V/75 IHF usable sensitivity(IHF58) 2.2 V/75 IHF 46 dB stereo quieting sensitivity22 V/75 Total Harmonic distortion MONO0

5、.2% STEREO0.3% S/N MONO60 dB (71 dB, IHF) STEREO58 dB (65 dB, IHF) Frequency response 20 Hz to 15 kHz, +1 dB, -2 dB Image rejection at 98 MHz40 dB IF rejection at 98 MHz70 dB AV Control Receiver Specification ORDER NO. MD0707047CERadioFans.CN 收音机爱 好者资料库 Stereo separation (1 kHz)40 dB Antenna termina

6、l75 (unbalanced) nAM TUNER SECTION Frequency range 522 kHz to 1611 kHz (9 kHz steps) 530 kHz to 1620 kHz (10 kHz steps) Sensitivity500 V/m Selectivity (at 999 kHz)30 dB nGENERAL Power supply AC 230 V to 240 V, 50 Hz Power consumption110 W Dimensions (W H D) 1 Safety Precautions 3 2 Prevention of Ele

7、ctro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices 4 3 About Lead Free Solder (PbF) 5 4 Accessories 6 5 Operation Procedures 7 6 Self Diagnosis and Special Mode Setting 12 7 Assembling and Disassembling 15 8 Service Positions 25 9 Voltage Measurement and Waveform Chart 29 430 mm

8、 x 105 mm x 385 mm Mass3.8 kg Power consumption in standby mode:1 W Notes: 1. Specifications are subject to change without notice. 2. Total harmonic distortion is measured by the digital spectrum analyzer. * Manufactured under license from Dolby Laboratories. “Dolby”, “Pro Logic” and the double-D sy

9、mbol are trademarks of Dolby Laboratories. * Manufactured under license from Digital Theater System. “DTS” and “DTS Digital Surround” are trademarks of Digital Theater System. 10 Wiring Connection Diagrams 37 11 Block Diagram 39 12 Notes of Schematic Diagram 41 13 Schematic Diagram 43 14 Printed Cir

10、cuit Board Diagram 53 15 Illustrations of ICs, Transistors & Diodes 61 16 Terminal Functions of Integrated Circuits 62 17 Exploded Views 63 18 Replacement Parts List 65 CONTENTS Page Page 2 SA-HR45E / SA-HR45EG RadioFans.CN 收音机爱 好者资料库 1 Safety Precautions 1.1. General Guidelines 1. When servicing, o

11、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,

12、make 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 and

13、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 5.2. When the exposed metal does not have a return path to the chassis, the reading must be.

14、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 parallel with a 0.15F capacitors, between each exposed metallic part on the set and a good earth ground such

15、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 measu

16、rements. 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 outside of the limits specified, there is a possibility of a

17、shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer. Fig. 1 1.2. Before Repair and Adjustment Disconnect AC power, discharge Power Supply Capacitors C707 & C1706 through a 10 , 1W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver

18、 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 V - 240 V, 50Hz in NO SIGNAL mode should be 200 800 mA . 1.3. Protection Circuitry The protection circuitry may hav

19、e operated if either of the following conditions is noticed: *No sound is heard when the power is supplied. *Sound stops during a performance. The functions of this circuitry is to prevent circuitry damage, for example, the positive and negative speaker connection wires are “shorted”, or if speaker

20、systems with an impedance less than the indicated rated impedance of this unit are used. If this occurs, follow the procedure outlined below: 1. Press the STANDBY/ON button, switch to STANDBY mode. 3 SA-HR45E / SA-HR45EG RadioFans.CN 收音机爱 好者资料库 2. Determine the cause of the problem and correct it. 3

21、. Press the STANDBY/ON button once again, supply the power. Note: When the protection circuitry functions, the unit will not operate unless the STANDBY/ON button is first switched STANDBY and then ON again. 1.4. Safety Part Information Safety Parts List: There are special components used in this equ

22、ipment which are important for safety. These parts are marked 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 permi

23、ssion of manufacturer. Table 1 Reference No.Part No.Part Name & DescriptionRemarks DZ701ERZV10V511CSZENERM TH701D4CAC8R00002THERMISTORM L701ELF18N067ECOMMON MODE COILM L702ELF21N015ECOMMON MODE COILM L703ELF21N015ECOMMON MODE COILM T701ETS48AA196ACMAIN TRANSFORMERM T721ETS19AA1X6AGBACKUP TRANSFORMER

24、M T800ETS28AU379ACSUB TRANSFORMERM PC701B3PBA0000402PHOTO COUPIERM PC721B3PBA0000402PHOTO COUPIERM RY721K6B1AEA00003PC POWER RELAYM F1K5D402BLA013FUSE T4AL 250VM P701K2AA2B000015AC INLETM A2K2CQ2CA00007AC CORDM C701ECQU2A104MLC0.1M C703F1BAF10200201000PM C704F1BAF10200201000PM C705F1BAF10200201000PM

25、 C706ECQU2A104MLC0.1M C714F1BAF10200201000P 10VM C732F1BAF10200201000PM C736FIBAF471A013470PM C737FIBAF471A013470PM 2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by electricity. Such component

26、s 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 component damage caused by electro sta

27、tic discharge (ESD). 1. Immediately before handling any semiconductor component or semiconductor-equiped 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 potenti

28、al shock reasons prior to applying power to the unit under test. 2. After removing an electrical assembly equiped with ES devices, place the assembly on a conductive surface such as aluminium foil, to prevent electrostatic charge build up or exposure of the assembly. 3. Use only a grounded-tip solde

29、ring iron to solder or unsolder ES devices. 4. Use only an anti-static solder remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can generate electrical charge to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electrical charge

30、s 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, aluminium foil or comparable conductive

31、 material). 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material 4 SA-HR45E / SA-HR45EG 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

32、, and observe all other safety precautions. 8. Minimize body motions when handling unpackaged replacement ES devices. (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

33、damage an ES device). 3 About Lead Free Solder (PbF) 3.1. Service caution based on legal restrictions 3.1.1. 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

34、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 free solder is higher approx.30 degrees C

35、 (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

36、 to be used when repairing the equipment for which the lead free solder is used. (Definition: The letter of “PbF” is printed on the PCB using the lead free solder.) To put lead free solder, it should be well molten and mixed with the original lead free solder. Remove the remaining lead free solder o

37、n the PCB cleanly for soldering of the new IC. Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt the lead free solder. Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperat

38、ure at 35030 degrees C (66286F). Recommended Lead Free Solder (Service Parts Route.) The following 3 types of lead free solder are available through the service parts route. RFKZ03D01K-(0.3mm 100g Reel) RFKZ06D01K-(0.6mm 100g Reel) RFKZ10D01K-(1.0mm 100g Reel) Note * Ingredient: tin (Sn), 96.5%, sil

39、ver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3% 5 SA-HR45E / SA-HR45EG 4 Accessories Note: Refer to Replacement Part list (Section 18) for the part number. 6 SA-HR45E / SA-HR45EG 5 Operation Procedures 5.1. Remote Control Operation 7 SA-HR45E / SA-HR45EG 5.2. Main Unit Oper

40、ation 8 SA-HR45E / SA-HR45EG 9 SA-HR45E / SA-HR45EG 5.3. Basic operations 5.4. Main Unit Connection (SA-HR45) 5.4.1. Speaker setup 10 SA-HR45E / SA-HR45EG 5.4.2. Home theater connections 11 SA-HR45E / SA-HR45EG 6 Self Diagnosis and Special Mode Setting This unit is equipped with function for checkin

41、g and inspecting namely: Self-Diagnostic and Test Mode. 6.1. Service Mode Summary Table The service mode can be activated by pressing various button combination on the main unit and remote control unit. Below is the summary for the various modes for checking: 12 SA-HR45E / SA-HR45EG 6.2. Doctor & Se

42、rvice Mode (Special Mode setting) 13 SA-HR45E / SA-HR45EG 6.2.1. Inspection & Checking Items After entering into doctor mode, the main unit can be used for checking of various items using the remote control. 6.3. Error Code Table Self- Diagnosis Function provides information on any problems occuring

43、 for the units and its respective parts by displaying error codes. 14 SA-HR45E / SA-HR45EG 7 Assembling and Disassembling 7.1. Caution “Attention Servicer” Some chassis components may have sharp edges. Be careful when disassembling and servicing. 1. This section describes procedures for checking the

44、 operation of the major printed circuit boards and replacing the main components. 2. For reassembly after operation checks or replacement, reverse the respective procedures. Special reassembly procedures are described only when required. 3. Select items from the following index when checks or replac

45、ement are required. 4. Refer to the Parts No. on the page of “Replacement Parts List” (Section 18), if necessary. Below is the list of disassembly procedures Disassembly of Top Cabinet Disassembly of Rear Panel Disassembly of Front Panel Disassembly of Panel P.C.B., Music Port P.C.B. & Volume P.C.B.

46、 Disassembly of Main P.C.B. Disassembly of DSP P.C.B. Disassembly of AC Inlet P.C.B. Disassembly of Power P.C.B. Disassembly of Digital Amp P.C.B. Below shown is the part number of different screws types used: 15 SA-HR45E / SA-HR45EG 7.2. Disassembly Flow Chart The following chart is the procedure f

47、or disassembling the casing and inside parts for internal inspection when carrying out the servicing. To assemble the unit, reverse the steps shown in the chart as below. 16 SA-HR45E / SA-HR45EG 7.3. Main Components and P.C.B Locations. 17 SA-HR45E / SA-HR45EG 7.4. Disassembly of Top Cabinet Step 1:

48、 Remove 1 screw at each side of the top cabinet. Step 2: Remove 2 screws at rear panel. Step 3:Lift the sides of the top cabinet outwards. Step 4: Push the top cabinet in the direction of arrows to release the catches. 7.5. Disassembly of Rear Panel Follow the (Step 1) - (Step 4) of item 7.4. - Disa

49、ssembly of Top Cabinet. Step 1: Remove 11 screws at rear panel. Step 2: Detach wire (CN5500) at Digital Amp P.C.B. Step 3: Release 2 catches from the side and pull Rear Panel backward as shown. 18 SA-HR45E / SA-HR45EG 7.6. Disassembly of Front Panel Follow the (Step 1) - (Step 4) of item 7.4. - Disassembly of Top Cabinet. Step 1: Detach the wires on connections (CN400, CN402 & CN401) on M