Panasonic-SAPMX70EG-cs-sm 电路图 维修手册.pdf

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1、 Panasonic Corporation 2015. All rights reserved. Unauthorized copying and distribution is a violation of law. PSG1502005CE CD Stereo System Model No.SA-PMX70EG Product Color: (S).Silver Type (K). Black Type TABLE OF CONTENTS PAGEPAGE 1 Safety Precautions- 3 1.1. General Guidelines- 3 1.2. Before Re

2、pair and Adjustment- 4 1.3. Protection Circuitry- 4 1.4. Caution For Fuse Replacement- 4 1.5. Safety Part Information- 4 2 Warning- 5 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices- 5 2.2. Precaution of Laser Diode- 6 2.3. Service caution based on Legal

3、restrictions -7 2.4. Handling Precaution for Traverse Unit-8 3 Service Navigation - 10 3.1. Service Information- 10 4 Specifications- 11 5 Location of Controls and Components- 12 5.1. Main Unit & Remote Control Key Button Operations- 12 6 Service Mode- 13 6.1. Service Mode Table - 13 Notes: Please r

4、efer to the Original Service Manual for : ? ? CD Mechanism Unit (BRS12C), Order No. PSG1303059AE ? ? Speaker system SB-PMX70EG-K, Order No. PSG1502006CE RadioFans.CN 收音机爱 好者资料库 2 6.2. Service Mode Error Code-14 6.3. Doctor Mode-15 6.4. Sales Demonstration Lock Function Mode -18 7 Troubleshooting Gui

5、de-19 7.1. No Power-19 7.2. No Sound to speaker unit (at times or all the times)-19 7.3. List of possible cause of failure by function -20 8 Disassembly and Assembly Instructions-21 8.1. Disassembly flow chart -22 8.2. Type of screws-22 8.3. Main Parts Location Diagram -23 8.4. Disassembly of Top Ca

6、binet-24 8.5. Disassembly of Front Panel Unit-25 8.6. Disassembly of Panel P.C.B. Unit-26 8.7. Disassembly of NFC P.C.B. -26 8.8. Disassembly of Headphone P.C.B.-26 8.9. Disassembly of Panel & IR Sensor P.C.B.-27 8.10. Disassembly of USB P.C.B. -27 8.11. Disassembly of SMPS P.C.B.-28 8.12. Disassemb

7、ly of Main P.C.B.-28 8.13. Disassembly of Inner Chassis -29 8.14. Disassembly of Tuner P.C.B.-30 8.15. Disassembly of CD Mechanism Unit-30 8.16. Replacement of Traverse Unit-31 8.17. Disassembly of Bluetooth P.C.B.-37 8.18. Disassembly of Rear Cabinet-37 9 Service Position-38 9.1. Checking of Panel

8、P.C.B. -38 9.2. Checking of SMPS P.C.B.-38 9.3. Checking of Main and CD Interface P.C.B.-39 10 Block Diagram -41 10.1. SERVO & SYSTEM CONTROL BLOCK DIAGRAM-41 10.2. AUDIO BLOCK DIAGRAM -42 10.3. POWER SUPPLY (1/2) BLOCK DIAGRAM -43 10.4. POWER SUPPLY (2/2) BLOCK DIAGRAM -44 11 Wiring Connection Diag

9、ram-45 12 Schematic Diagram-47 12.1. Schematic Diagram Notes-47 12.2. CD INTERFACE, TUNER & USB CIRCUIT-49 12.3. PANEL CIRCUIT -50 12.4. IR SENSOR & HEADPHONE CIRCUIT-51 12.5. SMPS CIRCUIT (1/2) -52 12.6. SMPS CIRCUIT (2/2) -53 13 Printed Circuit Board -54 13.1. CD INTERFACE, TUNER & USB P.C.B.-54 1

10、3.2. PANEL, IR SENSOR & HEADPHONE P.C.B. -55 13.3. SMPS P.C.B. -56 14 Voltage Measurement-57 14.1. MAIN (SUPPLY) P.C.B.-57 14.2. SMPS P.C.B. -58 15 Exploded View and Replacement Parts List-59 15.1. Cabinet Parts Location-59 15.2. Packaging-60 15.3. Mechanical Replacement Parts List-61 15.4. Electric

11、al Replacement Parts List-63 RadioFans.CN 收音机爱 好者资料库 3 1Safety Precautions 1.1.General Guidelines 1. IMPORTANT SAFETY NOTICE There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic Diagrams, Circuit Board Layout, Exploded Views a

12、nd Replacement Parts List. It is essential that these critical parts should be replaced with manufacturers specified parts to prevent X-RADIATION, shock, fire, or other hazards. Do not modify the original design without permission of manufacturer. 2. An Isolation Transformer should always be used du

13、ring the servicing of AC Adaptor whose chassis is not isolated from the AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks. It will also protect AC Adaptor from being damaged by accidental short

14、ing that may occur during servicing. 3. 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. 4. After servicing, see to it that all the protective devices such as insulation barriers, insulation pa

15、pers shields are properly installed. 5. After servicing, 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 va

16、lue, 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 5.2M. When the exposed metal does not

17、have a return path to the chas- sis, the reading must be 1.1.2.Leakage Current Hot Check 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

18、on the set and a good earth ground such as a water pipe, as shown in Figure 1-1. 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

19、 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 exceed 1/2 milliamp. In case a measurement is outside of the limi

20、ts specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is returned to the customer. Figure. 1-1 RadioFans.CN 收音机爱 好者资料库 4 1.2.Before Repair and Adjustment Disconnect AC power & discharge AC Capacitors (C5700, C5701, C5702, C5705 and C5706

21、) through a 10W, 1W resistor to ground. Caution : 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 consumption during AC 240V, at 50Hz in

22、 NO SIGNAL mode (at volume minimum in FM mode) should be 200 mA. 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 is turned on. Sound stops during a performance. The function of this circuitry is t

23、o 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. If this occurs, follow the procedure outlines below: 1. Turn off the power. 2. Determ

24、ine 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 again. 1.4.Caution For Fuse Replacement 1.5.Safety Part Information Safety Parts Li

25、st: There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic Diagrams, Exploded View & Replacement Parts List. It is essential that these critical parts should be replaced with manufacturers specified parts to prevent shock, fire

26、or other hazards. Do not modify the original design without permission of manufacturer. SafetyRef. No.Part No.Part Name & DescriptionRemarks 12RGR0474A-A3REAR CABINET 16RKM0766-KTOP CABINETK 16RKM0766-STOP CABINETS 23RMQ2463SMPS PC SHEET 301RAE1047Z-VTRAVERSE ASSY A2K2CQ2YY00119AC CORD A3RQT9985-DO/

27、I BOOK (Ge/It/Fr/Du/Da/Sw/Fi) A3RQT9987-RO/I BOOK (Po/Cz/Sp) A3RQT9988-BO/I BOOK (En) PCB6REP5160AASMPS P.C.B(RTL) DZ5701ERZV10V511CSSURGE ABSORBER(E.S.D) L5704G0B203G00005LINE FILTER L5713G0B922G00002LINE FILTER T5701G4DYZ0000080SWITCHING TRANSFORMER PC5721B3PBA0000579PHOTO COUPLER PC5761B3PBA00005

28、79PHOTO COUPLER F1K5G312Y00007FUSE P5701K2AA2B000011AC INLET R5700D0GF474JA048470K 1/4W R5701D0GF474JA048470K 1/4W R5710D0GF474JA048470K 1/4W C5700F1BAF1020020 1000pF C5701F0CAF224A1050.22uF C5702F0CAF224A1050.22uF C5705F1BAF1020020 1000pF C5706F1BAF1020020 1000pF 5 2Warning 2.1.Prevention of Electr

29、ostatic Discharge (ESD) to Electrostatically Sensi- tive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec- trostatically Sensitive (ES) Devices. The following techniques should be used to help reduce the incid

30、ence 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 discharging ESD wr

31、ist 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 or exposure of

32、 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 not use freon

33、-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 shorted together b

34、y 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 sure no power

35、 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 can generate

36、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 pickup: 100 W/VD

37、E 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 focus lens using

38、 optical instruments. 4. Recommend not to look at pickup lens for a long time. ACHTUNG : Dieses Produkt enthlt eine Laserdiode. Im eingeschalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheitadg- estrahit. Wellenlnge : 790nm (CD) Maximale Strahlungsleistung der Lasereinheit :100 W/VD

39、E Die Strahlung an der Lasereinheit ist ungefhrlich, wenn folgende Punkte beachtet werden: 1. Die Lasereinheit nicht zerlegen, da die Strahlung an der freigelegten Laserdiode gefhrlich ist. 2. Den werkseitig justierten Einstellregler der Lasereinhit nicht verstellen. 3. Nicht mit optischen Instrumen

40、ten in die Fokussierlinse blicken. 4. Nicht ber lngere Zeit in die Fokussierlinse blicken. CAUTION! THIS PRODUCT UTILIZES A LASER. USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. 7 2.3.Service caution based on

41、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 printed circuit boards used for this equipment in considering the globally environmental conservation. The normal solder is the all

42、oy 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 (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. (Definition: The letter of “PbF” is printed on the PCB using the lead free solder.) To put lead free sold