Panasonic-SAPM250E-cs-sm 电路图 维修手册.pdf

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1、 Panasonic Corporation 2014. All rights reserved. Unauthorized copying and distribution is a violation of law. PSG1403006CE CD Stereo System Model No.SA-PM250EB SA-PM250EC SA-PM250EE SA-PM250EF SA-PM250EG Product Color: (S).Silver Type TABLE OF CONTENTS PAGEPAGE 1 Safety Precautions- 3 1.1. General

2、Guidelines- 3 1.2. Caution for AC Cord (For EB only)- 4 1.3. Before Repair and Adjustment- 4 1.4. Protection Circuitry- 4 1.5. Caution For Fuse Replacement- 4 1.6. Safety Part Information- 5 2 Warning- 6 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices- 6

3、2.2. Precaution of Laser Diode- 7 2.3. Service caution based on Legal restrictions -8 2.4. Handling Precaution for Traverse Unit-9 3 Service Navigation - 11 3.1. Service Information- 11 4 Specifications- 12 5 Location of Controls and Components- 13 5.1. Main Unit & Remote Control Key Button Operatio

4、ns- 13 6 Service Mode- 14 6.1. Self Diagnostic Table- 14 6.2. Self Diagnostic Function Error Code- 15 Notes: Please refer to the Original Service Manual for : ? ? CD Mechanism Unit (DLS6CE), Order No. PSG1206023AE ? ? Speaker system SB-PM02EG1-K, Order No. PSG1206013AE RadioFans.CN 收音机爱 好者资料库 2 6.3.

5、 Doctor Mode Table 1 -16 6.4. Doctor Mode Table 2 -17 7 Troubleshooting Guide-19 8 Disassembly and Assembly Instructions-21 8.1. Service Fixture & Tools -21 8.2. Disassembly flow chart -21 8.3. Type of screws-22 8.4. Main Parts Location Diagram -22 8.5. Disassembly of Top Cabinet Assembly-23 8.6. Di

6、sassembly of Bluetooth P.C.B.-24 8.7. Disassembly of Tuner P.C.B.-25 8.8. Disassembly of SMPS Unit-25 8.9. Disassembly of SMPS P.C.B.-26 8.10. Disassembly of Front Panel Assembly -27 8.11. Disassembly of Button P.C.B., Volume P.C.B. and Panel P.C.B. -28 8.12. Disassembly of CD Lid-30 8.13. Disassemb

7、ly of Main P.C.B.-31 8.14. Disassembly of CD Mechanism Unit-32 8.15. Disassembly of CD Interface P.C.B.-32 9 Disassembly and Assembly of Traverse Unit -33 9.1. Disassembling Procedures -33 9.2. Assembling Procedures -34 10 Service Position-36 10.1. Checking of SMPS P.C.B.-36 10.2. Checking of Panel

8、P.C.B. -36 10.3. Checking of CD Interface P.C.B. -37 10.4. Checking of Main P.C.B. (Side A)-38 10.5. Checking of Main P.C.B. (Side B)-39 11 Block Diagram -41 11.1. SYSTEM CONTROL & AUDIO BLOCK DIAGRAM-41 11.2. POWER SUPPLY BLOCK DIAGRAM -42 12 Wiring Connection Diagram-43 13 Schematic Diagram-45 13.

9、1. Schematic Diagram Notes-45 13.2. CD INTERFACE & MAIN (MICON) CIRCUIT (1/2)-47 13.3. MAIN (MICON) CIRCUIT (2/2)-48 13.4. MAIN (SUPPLY) CIRCUIT-49 13.5. MAIN (DAMP) CIRCUIT-50 13.6. MAIN (CD MOTOR DRIVER) CIRCUIT-51 13.7. MAIN (USB) & TUNER CIRCUIT -52 13.8. PANEL, VOLUME & BUTTON CIRCUIT-53 13.9.

10、SMPS CIRCUIT -54 14 Printed Circuit Board -55 14.1. CD INTERFACE & TUNER P.C.B.-55 14.2. MAIN P.C.B. (Side A)-56 14.3. MAIN P.C.B. (Side B)-57 14.4. PANEL, VOLUME & BUTTON P.C.B.-58 14.5. SMPS P.C.B. -59 15 Voltage and Waveform Measurement -61 15.1. Voltage Measurement-61 15.2. Waveform Chart -64 16

11、 Exploded View and Replacement Parts List-65 16.1. Cabinet Parts Location-65 16.2. Packaging-66 16.3. Mechanical Replacement Parts List-67 16.4. Electrical Replacement Parts List-69 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 comp

12、onents used in this equipment which are important for safety. These parts are marked by in the Schematic Diagrams, Circuit Board Layout, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced with manufacturers specified parts to prevent X-RADIATION,

13、shock, fire, or other hazards. Do not modify the original design without permission of manufacturer. 2. An Isolation Transformer should always be used during 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

14、the technician from accidents resulting in personal injury from electrical shocks. It will also protect AC Adaptor from being damaged by accidental shorting that may occur during servicing. 3. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have

15、been overheated or damaged by the short circuit. 4. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed. 5. After servicing, make the following leakage current checks to prevent the customer from being exposed to sh

16、ock 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 cabinet part on the equipment such as screwheads, connectors, control

17、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 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 us

18、e 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 1-1. 3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, t

19、o 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 volts RMS. A leakage current tester (Simpso

20、n 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 before it is returned to the customer. F

21、igure. 1-1 RadioFans.CN 收音机爱 好者资料库 4 1.2.Caution for AC Cord (For EB only) 1.3.Before Repair and Adjustment Disconnect AC power, discharge unit AC Capacitors (C1702, C1710, C1725, C1727 and C1728) through a 10W, 1W resistor to ground. Caution : DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade

22、, 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 240V, at 50Hz in NO SIGNAL mode (at volume minimum in FM mode) should be 200 mA. 1.4.Protection Circuitry The protection circ

23、uitry 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 to prevent circuitry damage if, for example, the positive and negative speaker connection wires are shorted, o

24、r 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 minute. Note: When the

25、 protection circuitry functions, the unit will not operate unless the power is first turned off and then on again. 1.5.Caution For Fuse Replacement 5 1.6.Safety Part Information Safety Parts List: There are special components used in this equipment which are important for safety. These parts are mar

26、ked 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 or other hazards. Do not modify the original design without permission of manufacturer. SafetyRef. No.Part

27、No.Part Name & DescriptionRemarks 23RGN3453-KNAME PLATEEC/EB/EF/EG 23RGN3453A-KNAME PLATEEE 29RMV0442SMPS COVER SHEET 301RAE1028Z-VTRAVERSE UNIT A2K2CQ2YY00119AC CORDEC/EE/EF/EG A2K2CT2YY00097AC CORDEB A3RQT9926-BO/I BOOK (En)EB/EC A3RQT9927-DO/I BOOK (Fge/Fr/It/Du)EG A3RQT9928-HO/I BOOK (Fr)EF A3RQ

28、T9929-EO/I BOOK (Sw/Da/Sp/Cz/Po/Fi)EC A3RQT9930-1RO/I BOOK (Ru/Ur)EE PCB5REP5070AASMPS P.C.B.(RTL) Z1752D4EAY511A182VARISTOR L1702G0B922G00002LINE FILTER T1700G4DYZ0000077TRANSFORMER PC1702B3PBA0000579PHOTO COUPLER F1700K5G202Y00006FUSE P1751K2AA2B000011AC INLET R1724ERJ12YJ105U1M 1/2W R1726ERJ12YJ1

29、05U1M 1/2W C1702F0CAF224A1050.22uF C1710F1BAF471A013470pF C1725F0CAF104A1050.1uF C1727F1BAF10200201000pF C1728F1BAF10200201000pF 6 2Warning 2.1.Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi- tive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by

30、static electricity. Such components commonly are called Elec- trostatically Sensitive (ES) Devices. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD). 1. Immediately before handling any semiconductor component or semicond

31、uctor-equipped 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 elec

32、trical 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 the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 4. Use only an anti-static solder removal dev

33、ice. 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 remove a replacement ES device fr

34、om 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 compara- ble conductive material). 7. Immediately before removing the protective material from the l

35、eads 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. 8. Minimize bodily motions when handling unpackaged rep

36、lacement 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) suf- ficient to damage an ES device). 7 2.2.Precaution of Laser Diode Caution: This product utilizes a laser di

37、ode 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/VDE Laser radiation from the pickup unit is safety level, but be sure the followings: 1. Do not disassemble the pickup unit, since radiati

38、on 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 optical instruments. 4. Recommend not to look at pickup lens for a long time. ACHTUNG : Dieses Produkt enthlt eine Laserdiode. Im einge

39、schalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheitadg- estrahit. Wellenlnge : 790nm (CD) Maximale Strahlungsleistung der Lasereinheit :100 W/VDE Die Strahlung an der Lasereinheit ist ungefhrlich, wenn folgende Punkte beachtet werden: 1. Die Lasereinheit nicht zerlegen, da die St

40、rahlung an der freigelegten Laserdiode gefhrlich ist. 2. Den werkseitig justierten Einstellregler der Lasereinhit nicht verstellen. 3. Nicht mit optischen Instrumenten in die Fokussierlinse blicken. 4. Nicht ber lngere Zeit in die Fokussierlinse blicken. CAUTION! THIS PRODUCT UTILIZES A LASER. USE O

41、F CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. 8 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

42、all electrical components on the printed 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 free solder is higher approx.30 degrees C (86F) more than that of the normal solder. Definition of PCB Lead Free Solde