Technics-SUC550-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. PSG1511001CE A6 CD Stereo System Model No.SU-C500EB SU-C500EG SU-C500GN SU-C500PP SU-C550EB SU-C550EG SC-C500EB SC-C500EG SC-C500GN SC-C500PP Product Color: (S).Silver Type TABLE OF CONTENT

2、S PAGEPAGE 1 Safety Precautions- 3 1.1. General Guidelines- 3 1.2. Before Repair and Adjustment- 4 1.3. Protection Circuitry- 4 1.4. Caution For AC Cord (For EB)- 5 1.5. Safety Parts Information-6 2 Warning -7 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devic

3、es -7 2.2. Precaution of Laser Diode-7 Please refer to the original service manual for: Speaker system SB-CT500EG-K, Order No. PSG1511002CE (For SU-C500EB/EG/GN/PP only) RadioFans.CN 收音机爱 好者资料库 2 2.3. General description about Lead Free Solder (PbF) -8 2.4. Handling Precautions for Traverse Unit -8

4、2.5. Grounding for electrostatic breakdown prevention-9 3 Service Navigation-10 3.1. Service Information-10 4 Specifications-13 5 Location of Controls and Components-14 5.1. Remote Control Key Button Operation -14 5.2. Main Unit Key Button Operation-15 6 Service Mode-17 6.1. Service Mode-17 7 Troubl

5、eshooting Guide-19 7.1. Preparations-19 7.2. No power-20 7.3. Unit Shutdown Soon After Power-up-23 7.4. No Display -24 7.5. LEDs do not illuminate-25 7.6. Remote control does not operate -32 7.7. Volume + / - key does not work-33 7.8. Touch key does not work-34 7.9. CDs cannot be played back -35 7.1

6、0. USB is not recognized -36 7.11. PC (USB-B) does not operate -36 7.12. OPT IN does not operate-37 7.13. Bluetooth does not operate-37 7.14. Wireless/Wired network connection cannot be made -37 7.15. No sound from speaker-38 7.16. No sound from headphones-39 8 Disassembly and Assembly Instructions-

7、43 8.1. Type of Screws -43 8.2. Disassembly Flow Chart-44 8.3. Main Components and P.C.B. Locations-45 8.4. Disassembly of Rear Panel-46 8.5. Disassembly of Side AL Panel L & R -46 8.6. Disassembly of Bottom Chassis-46 8.7. Disassembly of Front Panel Block-47 8.8. Disassembly of Power SW P.C.B. -47

8、8.9. Disassembly of Headphone P.C.B.-48 8.10. Disassembly of Volume SW P.C.B.-48 8.11. Disassembly of USB P.C.B. -48 8.12. Disassembly of Foot Illumination P.C.B.-49 8.13. Disassembly of IR P.C.B.-49 8.14. Disassembly of OLED P.C.B. -50 8.15. Disassembly of Touch SW P.C.B.-50 8.16. Disassembly of SM

9、PS P.C.B.-51 8.17. Disassembly of AMP P.C.B.-51 8.18. Disassembly of BT Connect P.C.B.-52 8.19. Disassembly of CD Mechanism Block-52 8.20. Disassembly of CD P.C.B. -53 8.21. Disassembly of CD Illumination P.C.B. -54 8.22. Disassembly of Shaft Unit A-55 8.23. Disassembly of Wifi Module-57 8.24. Disas

10、sembly of Main P.C.B.-57 8.25. Replacement of Wifi Antenna L & R-58 8.26. Assembly of Wifi Antenna L & R -60 9 Service Position-62 9.1. Checking and Repairing of Power SW P.C.B., Volume SW P.C.B., IR P.C.B., OLED P.C.B., Touch SW P.C.B., SMPS P.C.B., AMP P.C.B., BT Connect P.C.B., CD P.C.B., Interlo

11、ck SW P.C.B., Wifi Module and Main P.C.B. - 62 10 Block Diagram- 63 11 Wiring Connection Diagram - 64 12 Exploded View and Replacement Parts List- 65 12.1. Cabinet Parts Location 1 (SU-C500EB/EG/ GN/PP)- 65 12.2. Cabinet Parts Location 2 (SU-C500EB/EG/ GN/PP)- 66 12.3. Packaging (SC-C500EB/EG/GN/PP)

12、- 67 12.4. Cabinet Parts Location 1 (SU-C550EB/EG) - 68 12.5. Cabinet Parts Location 2 (SU-C550EB/EG) - 69 12.6. Packaging (SU-C550EB/EG)- 70 12.7. Mechanical Replacement Part List- 71 12.8. Electrical Replacement Parts List - 74 RadioFans.CN 收音机爱 好者资料库 3 1Safety Precautions 1.1.General Guidelines 1

13、. 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 critical parts should be replaced with manufa

14、cturers 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 isolated from the AC power line. Use a transf

15、ormer 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, observe the original lead dress. If a short

16、 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, make the following leakage current checks

17、to prevent the customer from being exposed to shock hazards. (This “Safety Precaution” 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

18、power cord. Replace if wear or damage is evident. 4. After servicing, be sure to restore 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

19、from being exposed to a shock hazard. 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 screwh

20、eads, 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 1.1.2.Leakage Current Hot Check 1. Plug the AC cord directly into

21、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 1-1. 3. Use an AC voltmeter, with 1000 ohms/vol

22、t 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 volts RMS. A leakag

23、e 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 before it is ret

24、urned 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 Power Supply AC to discharge AC capacitor in SMPS P.C.B. through a 1W / 10 resistor to ground. Figure 1-2 Caution: DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this m

25、ay destroy solid state devices. After repairs are completed, restore power gradually using a variac to avoid overcurrent. Current consumption at AC 220V - 240V, during power on (In Standby mode) should be 0.30W. (EB/EG/GN) Current consumption at AC 120V, during power on (In Standby mode) should be 0

26、.30W. (PP) 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 to prevent circuitry damage if, for example, the positi

27、ve 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 and correct it. 3. Turn

28、 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. 5 1.4.Caution For AC Cord (For EB) Figure 1-3 6 1.5.Safety Parts Information Safety Parts List: There are special components use

29、d 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 modify the

30、original design without permission of manufacturer. 1.5.1.SU-C500EB/EG/GN/PP 1.5.2.SC-C500EB/EG/GN/PP 1.5.3.SU-C550EB/EG SafetyRef No.Part No.Part Name & DescriptionRemarks 18RGG0277-STOP AL PANEL 19RGG0278-SSIDE AL PANEL L 20RGG0279-SSIDE AL PANEL R 29RGR0483A-A1REAR PANELEB/EG/ GN 29RGR0483A-BREAR

31、 PANELPP 301RAE5307Z-VTRAVERSE UNIT PCB4SEP0548ABSMPS P.C.BPP PCB4SEP0548AASMPS P.C.BEB/EG/ GN F1K5G312Y00007FUSE F2K5G202Y00006FUSE IP7001ERBRE1R50VFUSE SafetyRef No.Part No.Part Name & DescriptionRemarks A1K2CG3YY00191AC CORDPP A1K2CK3YY00083AC CORDGN A1K2CM3YY00041AC CORDEG A1K2CT3YY00081AC CORDE

32、B A3SQT1065OI (Sp/Sw/Da/Fi)EG A3SQT1066OI (En)EB/GN A3SQT1068OI (En/Cf)PP A3SQT1113OI (Ge/Fr/It/Du)EG SafetyRef No.Part No.Part Name & DescriptionRemarks 18RGG0277-STOP AL PANEL 19RGG0278-SSIDE AL PANEL L 20RGG0279-SSIDE AL PANEL R 29RGR0483B-AREAR PANEL 301RAE5307Z-VTRAVERSE UNIT A1K2CM3YY00041AC C

33、ORDEG A1K2CT3YY00081AC CORDEB A3SQT1114OI (En)EB A3SQT1115OI (Ge/Fr/It/Du)EG A3SQT1116OI (Sp/Sw/Da/Fi)EG PCB4SEP0548AASMPS P.C.B F1K5G312Y00007FUSE F2K5G202Y00006FUSE IP7001ERBRE1R50VFUSE 7 2Warning 2.1.Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi- tive (ES) Devices Some se

34、miconductor (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 incidence of component damage caused by electrostatic discharge (ESD). 1. Immediat

35、ely 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 wrist strap, which should be removed for potential shock reasons prior to apply

36、ing 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 the assembly. 3. Use only a grounded-tip soldering iron to solder or unsolde

37、r 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-propelled chemicals. These can generate electrical charges sufficient to dam

38、age 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, aluminum foil or compara- ble conductive material). 7. Imm

39、ediately 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 is applied to the chassis or circuit, and observe all other safety precautio

40、ns. 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 static electricity (ESD) suf- ficient to damage an ES device). 2.2.Precaution

41、 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/VDE Laser radiation from the pickup unit is safety level, but be sure the follo

42、wings: 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 optical instruments. 4. Recommend not to look at pickup lens for a long time. 8 Figure 2-1 2.3.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