Panasonic-SAPMX7DBEB-cs-sm 电路图 维修手册.pdf

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1、 Panasonic Corporation 2013. All rights reserved. Unauthorized copying and distribution is a violation of law. PSG1303006CE CD Stereo System Model No.SA-PMX7DBEB Product Color: (K).Black Type TABLE OF CONTENTS PAGEPAGE 1 Safety Precautions- 3 1.1. General Guidelines- 3 1.2. Caution for AC Cord - 4 1

2、.3. Before Repair and Adjustment- 5 1.4. Protection Circuitry- 5 1.5. Caution For Fuse Replacement- 5 1.6. Safety Part Information- 5 2 Warning- 6 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices- 6 2.2. Precaution of Laser Diode-7 2.3. Service caution bas

3、ed on Legal restrictions -8 2.4. Handling Precaution for Traverse Unit-9 3 Service Navigation - 11 3.1. Service Information- 11 4 Specifications- 12 4.1. Others (Licenses)- 12 5 General/Introduction- 13 5.1. CD playback operations- 13 5.2. Inserting media - 14 Notes: Please refer to the Original Ser

4、vice Manual for : ? ? CD Mechanism Unit (BRS12C), Order No. PSG1303059AE ? ? Speaker system SB-PMX7EG-K, Order No. PSG1303028CE RadioFans.CN 收音机爱 好者资料库 2 5.3. Bluetooth operations -15 6 Location of Controls and Components-16 6.1. Main Unit & Remote Control Key Button Operations -16 7 Installation In

5、structions-17 7.1. Connections -17 8 Service Mode-18 8.1. Self Diagnostic Mode-18 8.2. Self Diagnostic Function Error Code-20 8.3. Doctor Mode Table-21 9 Disassembly and Assembly Instructions-31 9.1. Disassembly flow chart -32 9.2. Types of Screws-32 9.3. Main Parts Location Diagram -33 9.4. Disasse

6、mbly of Top Cabinet Block -34 9.5. Disassembly of Headphone P.C.B.-35 9.6. Disassembly of iPod Cradle Unit-36 9.7. Disassembly of Connector Support Unit -37 9.8. Disassembly of iPod Connect P.C.B.-40 9.9. Disassembly of iPod Connector Unit-41 9.10. Disassembly of iPod Lid-42 9.11. Disassembly of Fro

7、nt Panel Block-43 9.12. Disassembly of Panel P.C.B. Block-45 9.13. Disassembly of USB P.C.B. -48 9.14. Disassembly of CD Lid-49 9.15. Disassembly of Bottom Ornament-50 9.16. Disassembly of Volume Knob Cover-51 9.17. Disassembly of SMPS P.C.B.-52 9.18. Disassembly of Main P.C.B.-53 9.19. Disassembly

8、of Inner Chassis -55 9.20. Disassembly of CD Mechanism Unit -57 9.21. Replacement of Traverse Unit-57 9.22. Disassembly of Rear Cabinet Block-65 9.23. Replacement of DAB Unit-66 10 Service Position-68 10.1. Checking of Panel P.C.B. -68 10.2. Checking of SMPS P.C.B. -69 10.3. Checking of Main P.C.B.

9、(Side B) -70 10.4. Checking of Main P.C.B. (Side A) -72 10.5. Checking of CD Servo P.C.B. -74 11 Block Diagram -77 11.1. SERVO & SYSTEM CONTROL (1/2) BLOCK DIAGRAM-77 11.2. SERVO & SYSTEM CONTROL (2/2) BLOCK DIAGRAM-78 11.3. IC TERMINAL CHART-79 11.4. AUDIO (1/3) BLOCK DIAGRAM -80 11.5. AUDIO (2/3)

10、BLOCK DIAGRAM -81 11.6. AUDIO (3/3) BLOCK DIAGRAM -82 11.7. POWER SUPPLY (1/2) BLOCK DIAGRAM -83 11.8. POWER SUPPLY (2/2) BLOCK DIAGRAM -84 12 Wiring Connection Diagram-85 13 Schematic Diagram-87 13.1. Schematic Diagram Notes-87 13.2. CD SERVO CIRCUIT (1/2) -89 13.3. CD SERVO CIRCUIT (2/2) -90 13.4.

11、 MAIN CIRCUIT (1/4) -91 13.5. MAIN CIRCUIT (2/4) -92 13.6. MAIN CIRCUIT (3/4) -93 13.7. MAIN CIRCUIT (4/4) -94 13.8. MAIN (MODULE) CIRCUIT-95 13.9. iPod CONNECT & DAB ADAPTER CIRCUIT- 96 13.10. PANEL, REMOTE SENSOR, USB & HEADPHONE CIRCUIT - 97 13.11. SMPS CIRCUIT (1/2)- 98 13.12. SMPS CIRCUIT (2/2)

12、- 99 13.13. BLUETOOTH CONNECT CIRCUIT -100 14 Printed Circuit Board-101 14.1. CD SERVO P.C.B.-101 14.2. MAIN P.C.B. (Side A)-102 14.3. MAIN P.C.B. (Side B)-103 14.4. iPod CONNECT, DAB ADAPTER & BLUETOOTH CONNECT P.C.B. -104 14.5. PANEL P.C.B.-105 14.6. REMOTE SENSOR, USB & HEADPHONE P.C.B.-106 14.7.

13、 SMPS P.C.B.-107 15 Appendix Information of Schematic Diagram -109 15.1. Voltage Measurement & Waveform Chart-109 16 Exploded View and Replacement Parts List-113 16.1. Exploded View and Mechanical replacement Parts List-113 16.2. Electrical Replacement Parts List -117 RadioFans.CN 收音机爱 好者资料库 3 1Safe

14、ty 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 and Replacement Parts List. It is essential that these critic

15、al 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 during the servicing of AC Adaptor whose chassis is not isolat

16、ed 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 shorting that may occur during servicing. 3. When servicing, obse

17、rve 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 papers shields are properly installed. 5. After servicing, mak

18、e 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 each

19、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 have a return path to the chas- sis, the reading must be 1.1

20、.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 on the set and a good earth ground such as a water pipe, as

21、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 outlet and repeat each of the above measurements. 6. The po

22、tential 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 shock hazard, and

23、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.Caution for AC Cord 5 1.3.Before Repair and Adjustment Disconnect AC power to discharge AC Capacitors (C5700, C5701, C5702, C5705 and C5706) through a 10W, 1W resistor to g

24、round. 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 at AC 220V - 240V, at 50Hz in NO SIGNAL mode (at volume min

25、 in FM Tuner mode) should be 200 mA. 1.4.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 to prevent circuitry damage i

26、f, 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. Determine the cause of the problem

27、 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. 1.5.Caution For Fuse Replacement 1.6.Safety Part Information Safety Parts List: There are special compon

28、ents 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 or other hazards. Do not mod

29、ify the original design without permission of manufacturer. SafetyRef. No.Part No.Part Name & DescriptionRemarks 17RGR0431C-A2REAR CABINET 23RKM0677-KTOP CABINET (BENT) 31RMQ2034PC SHEET 301RAE1040Z-VTRAVERSE ASSY A2K2CT2YY00097AC CORD A3VQT4X47-1O/I BOOK (En) C5700F1BAF10200201000pF C5701F0CAF224A1

30、050.22uF C5702F0CAF224A1050.22uF C5705F1BAF10200201000pF C5706F1BAF10200201000pF DZ5701ERZE08A471CSVARISTOR(E.S.D) F1K5G312Y00007FUSE L5702ELF17N011ALINE FILTER L5703ELF19H010ALINE FILTER P5701K2AA2B000011AC INLET PC5720B3PBA0000503PHOTO COUPLER PC5760B3PBA0000503PHOTO COUPLER PCB8REP4967AESMPS P.C.

31、B(RTL) R5700ERJ8GEYJ474V470K 1/4W R5701ERJ8GEYJ474V470K 1/4W R5710ERJ8GEYJ474V470K 1/4W T5701ETS35BL166ADTRANSFORMER 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 static elect

32、ricity. 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 semiconductor-equipp

33、ed 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 electrical assem

34、bly 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 device. Some so

35、lder 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 from its prote

36、ctive 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 leads of a re

37、placement 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 replacement ES

38、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 diode with the

39、 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 radiation from expo

40、sed 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. 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. 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 us