Panasonic-SAAKX14P-cs-sm 电路图 维修手册.pdf

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1、 Panasonic Corporation 2012. All rights reserved. Unauthorized copying and distribution is a violation of law. PSG1203032AE A6 CD Stereo System Model No.SA-AKX14P Product Color: (K).Black Type TABLE OF CONTENTS PAGEPAGE 1 Safety Precautions- 3 1.1. General Guidelines- 3 1.2. Before Repair and Adjust

2、ment- 3 1.3. Protection Circuitry- 3 1.4. Caution For Fuse Replacement- 4 1.5. Safety Parts Information - 4 2 Warning- 5 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatic Sensitive (ES) Devices-5 2.2. Precaution of Laser Diode-6 2.3. Service caution based on Legal restrictions -7 2.4

3、. Handling Precautions for Traverse Unit -8 3 Service Navigation - 10 3.1. Service Information- 10 3.2. Differences Table - 11 Please refer to the original service manual for: 1) SA-AKX14P is base on SA-AKX14PN-K, Order No. PSG1201003CE. 2) CD Mechanism Unit (BRS1C), Order No. PSG1102001CE. 3) Speak

4、er system SB-AKX14P-K, Order No. PSG1203033AE. RadioFans.CN 收音机爱 好者资料库 2 4 Specifications-12 5 Block Diagram -13 5.1. Power Supply -13 6 Schematic Diagram-15 6.1. Main Circuit-15 6.2. SMPS Circuit-19 7 Printed Circuit Board -21 7.1. Main P.C.B. & Tuner P.C.B. -21 7.2. Panel, LCD, Remote Sensor & USB

5、 P.C.B.-22 7.3. SMPS P.C.B. -23 8 Exploded View and Replacement Parts List -24 8.1. Exploded View and Mechanical Replacement Parts List -24 8.2. Electrical Replacement Parts List-29 RadioFans.CN 收音机爱 好者资料库 3 1Safety Precautions 1.1.General Guidelines 1. When servicing, observe the original lead dres

6、s. 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, carry out the following leaka

7、ge 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 each exposed metallic cab

8、inet 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 must be (This “Safety Precaution”

9、 is applied only in U.S.A.) 1. Before servicing, unplug the power cord to prevent an electric shock. 2. When replacing parts, use only manufacturers recommended components for safety. 3. Check the condition of the power cord. Replace if wear or damage is evident. 4. After servicing, be sure to resto

10、re the lead dress, insulation barriers, insulation papers, shields, etc. 5. Before returning the serviced equipment to the customer, be sure to make the following insulation resistance test to prevent the customer from being exposed to a shock hazard. 1.1.2.Leakage Current Hot Check 1. Plug the AC c

11、ord 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 pipe, as shown in Figure 1. 3. Use an AC voltmeter, wi

12、th 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. The potential at any point should not exceed 0.75 vol

13、ts 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 hazard, and the equipment should be repaired and rechecked

14、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, C5708) through a 10 , 10 W resistor to ground. Caution: DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instan

15、ce), as this may destroy solid state devices. After repairs are completed, restore power gradually using a variac, to avoid overcurrent. Current consumption at AC 120V, 60 Hz in Power ON, FM Tuner, No Signal, Volume minimal mode should be 500 mA 1.3.Protection Circuitry The protection circuitry may

16、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. RadioFans.CN 收音机爱 好者资料库 4 The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wire

17、s are “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 after one minu

18、te. Note: When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again. 1.4.Caution For Fuse Replacement 1.5.Safety Parts Information Safety Parts List: There are special components used in this equipment which are important for safety. Th

19、ese parts are marked by () in the Exploded View & 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. SafetyRef No.Part N

20、o.Part Name & DescriptionRemarks 20RKMX1011-K1TOP CABINET 21RGRX1008K-FREAR PANEL 301RAEX1033Z-VTRAVERSE ASSY A2K2CB2YY00059AC CORD A3RQT9691-1PO/I BOOK (En) PCB8REP4783AASMPS P.C.B.(RTL) DZ5701ERZVA5Z471ZNR L5701G0B932H00002LINE FILTER T5701G4DYZ0000057MAIN TRANSFORMER T5751ETS19AB2E6AGSUB TRANSFOR

21、MER PC5701B3PBA0000503PHOTO COUPLER PC5702B3PBA0000503PHOTO COUPLER PC5720B3PBA0000503PHOTO COUPLER PC5799B3PBA0000503PHOTO COUPLER F1K5D802APA008FUSE TH5702D4CAA2R20001THERMISTOR TH5860D4CC11040013THERMISTOR TH5900D4CC11040013THERMISTOR P5701K2AB2B000007AC INLET R5708ERJ8GEYJ155V1.5M 1/4W R5709ERJ8

22、GEYJ155V1.5M 1/4W C5700F1BAF471A013470pF C5701F0CAF104A1050.1uF C5703F0CAF224A1050.22uF C5704F1BAF471A013470pF C5705F1BAF471A013470pF C5708F1BAF10200201000pF 5 2Warning 2.1.Prevention of Electrostatic Discharge (ESD) to Electrostatic Sensitive (ES) Devices Some semiconductor (solid state) devices ca

23、n be damaged easily by static electricity. Such components commonly are called Elec- trostatically 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 red

24、uce 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 disch

25、arging 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 alumi- num foil, to prevent electrostatic charge buildup o

26、r 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

27、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 protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically short

28、ed together by conductive foam, aluminum foil or compara- ble conductive material). 7. Immediately before removing the protective 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

29、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. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor

30、can generate static electricity (ESD) suf- ficient to damage an ES device). 6 2.2.Precaution of Laser Diode Caution: This product utilizes a laser diode with the unit turned “on”, invisible laser radiation is emitted from the pickup lens. Wavelength: 790 nm (CD) Maximum output radiation power from p

31、ickup: 100 W/VDE Laser radiation from the pickup unit is safety level, but be sure the followings: 1. Do not disassemble the pickup unit, since radiation from exposed laser diode is dangerous. 2. Do not adjust the variable resistor on the pickup unit. It was already adjusted. 3. Do not look at the f

32、ocus lens using optical instruments. 4. Recommend not to look at pickup lens for a long time. 7 2.3.Service caution based on Legal restrictions 2.3.1.General description about Lead Free Solder (PbF) The lead free solder has been used in the mounting process of all electrical components on the printe

33、d 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

34、free solder is higher approx.30 degrees C (86F) more than that of the normal solder. Definition of PCB Lead Free Solder being used 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. (De

35、finition: 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 on the PCB cleanly for soldering of the new IC. Since the melting point of the lead f

36、ree 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 temperature at 35030 degrees C (66286F). Recommended Lead Free Solder (Service Parts Route.)

37、 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%, silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3% The letter

38、 of “PbF” is printed either foil side or components side on the PCB using the lead free solder. (See right figure) 8 2.4.Handling Precautions for Traverse Unit The laser diode in the optical pickup unit may break down due to static electricity of clothes or human body. Special care must be taken avo

39、id caution to electrostatic breakdown when servicing and handling the laser diode in the traverse unit. 2.4.1.Cautions to Be Taken in Handling the Optical Pickup Unit The laser diode in the optical pickup unit may be damaged due to electrostatic discharge generating from clothes or human body. Speci

40、al care must be taken avoid caution to electrostatic discharge damage when servicing the laser diode. 1. Do not give a considerable shock to the optical pickup unit as it has an extremely high-precise structure. 2. To prevent the laser diode from the electrostatic discharge damage, the flexible cabl

41、e of the optical pickup unit removed should be short-circuited with a short pin or a clip. 3. The flexible cable may be cut off if an excessive force is applied to it. Use caution when handling the flexible cable. 4. The antistatic FPC is connected to the new optical pickup unit. After replacing the

42、 optical pickup unit and connecting the flexi- ble cable, cut off the antistatic FPC. 9 2.4.2.Grounding for electrostatic breakdown prevention Some devices such as the DVD player use the optical pickup (laser diode) and the optical pickup will be damaged by static electric- ity in the working enviro

43、nment. Proceed servicing works under the working environment where grounding works is completed. 2.4.2.1.Worktable grounding 1. Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed, and ground the sheet. 2.4.2.2.Human body grounding 1. Use the anti-static wr

44、ist strap to discharge the static electricity form your body. 10 3Service Navigation 3.1.Service Information This service manual contains technical information which will allow service personnels to understand and service this model. Please place orders using the parts list and not the drawing refer

45、ence numbers. If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service manual. CD Mechanism unit (BRS1C): 1) This model uses CD Mechanism Unit (BRS1C). Micro-processor: 1) The following components are supplied as an assem

46、bled part. - Micro-processor IC, IC2003 (RFKWMAKX14M0) Speaker system: 1) This model uses Speaker System, SA-AKX14P-K. Base model: 1) The base is SA-AKX14PN-K. As such this service manual does not contain the following information as below:- Location of Controls and Components Self-Diagnostic and Special Mode Setting Troubleshooting Guide Disassembly and Assembly Instructions Replacement of Traverse Unit Simplified Block Diagram Block Diagram (except Power Supply) Wiring Connection Diagram Sc