Technics-SUG700-int-sm(1) 维修电路原理图.pdf

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1、 Panasonic Corporation 2017. All rights reserved.Unauthorized copying and distribution is a violationof law.PSG1704003CEA6Stereo Integrated AmplifierModel No.SU-G700ESU-G700PPProduct Color: (S).Silver Type TABLE OF CONTENTSPAGEPAGE1 Safety Precautions- 31.1. General Guidelines- 31.2. Before Repair a

2、nd Adjustment- 41.3. Protection Circuitry- 51.4. Safety Parts Information- 52 Warning- 62.1. Prevention of Electrostatic Discharge (ESD)to Electrostatically Sensitive (ES) Devices- 62.2. General description about Lead Free Solder(PbF)- 62.3. Grounding for electrostatic breakdownprevention - 73 Servi

3、ce Navigation- 83.1. Service Information - 84 Specifications - 95 Location of Controls and Components -105.1. Remote Control Key Button Operation-105.2. Main Unit Key Button Operation-116 Service Mode -126.1. Doctor Mode-126.2. Error Code Table- 157 Troubleshooting Guide - 167.1. Check the problem i

4、s reproduced- 167.2. No power- 177.3. Automatically shutdown during operation- 207.4. No Display - 217.5. Power Indicator - Not Light - 227.6. Meter Illumination - No Light - 237.7. No Remote Control Operation- 247.8. Can not control Volume +/- - 257.9. Can not control Input Selection- 267.10. No SU

5、B Function (Firmware UPDATEterminal)- 277.11. No Sound input from PC (USB-B), COAX INor OPT IN - 287.12. No Sound from Speaker Unit - 297.13. No Sound from Headphone - 307.14. No Sound from LINE OUT Terminal- 317.15. No Meter Operation - 327.16. No System Control (Control Terminal)- 33RadioFans.CN 收

6、音机爱 好者资料库27.17. No Audio Output from PRE OUT terminal -347.18. No LAPC Function-347.19. Pin function of each connectors-357.20. Function and Possible failure PCB or Module -368 Disassembly and Assembly Instructions-378.1. Type of Screws -378.2. Disassembly Flow Chart-388.3. Main Components and P.C.B

7、. Locations-398.4. Disassembly of Top Cabinet Assy-408.5. Disassembly of SMPS P.C.B. -408.6. Disassembly of AMP P.C.B. -418.7. Disassembly of Speaker L P.C.B. and SpeakerR P.C.B. -428.8. Disassembly of Control P.C.B. -428.9. Disassembly of Digital P.C.B. -438.10. Disassembly of REC Out P.C.B. -438.1

8、1. Disassembly of Main P.C.B. -448.12. Disassembly of Front Panel Unit-448.13. Disassembly of Selector P.C.B.-458.14. Disassembly of Volume P.C.B.-458.15. Disassembly of Main SW P.C.B. -468.16. Disassembly of OLED P.C.B. -468.17. Disassembly of Shade Sheet B -468.18. Disassembly of Headphone P.C.B.-

9、468.19. Disassembly of Meter Illumi LED L P.C.B. andMeter Illumi LED R P.C.B.-478.20. Disassembly of Meter P.C.B.-478.21. Disassembly of Meter Unit-479 Service Position-489.1. Checking and Repairing of SMPS P.C.B.,AMP P.C.B., Main P.C.B., Control P.C.B.,Digital P.C.B. and REC Out P.C.B. -4810 Measur

10、ement and Adjustment-4910.1. Adjustment of the Peak Power Meter-4911 Block Diagram -5112 Wiring Connection Diagram-5213 Exploded View and Replacement Parts List-5313.1. Cabinet Parts Location 1-5313.2. Cabinet Parts Location 2-5413.3. Cabinet Parts Location 3-5513.4. Packaging-5613.5. Mechanical Rep

11、lacement Part List -5713.6. Electrical Replacement Parts List-59RadioFans.CN 收音机爱 好者资料库31Safety Precautions1.1.General Guidelines1. IMPORTANT SAFETY NOTICEThere are special components used in this equipment which are important for safety. These parts are marked by in theSchematic Diagrams, Circuit B

12、oard Layout, Exploded Views and Replacement Parts List. It is essential that these critical partsshould be replaced with manufacturers specified parts to prevent X-RADIATION, shock, fire, or other hazards. Do not modifythe original design without permission of manufacturer.2. An Isolation Transforme

13、r should always be used during the servicing of AC Adaptor whose chassis is not isolated from the ACpower line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personalinjury from electrical shocks. It will also protect AC Adaptor from being dam

14、aged by accidental shorting that may occur duringservicing.3. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated ordamaged by the short circuit.4. After servicing, see to it that all the protective devices such as insulation bar

15、riers, insulation papers shields are properlyinstalled.5. After servicing, make the following leakage current checks 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

16、.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 restore the lead dress, insulation barriers, insulation papers, shields, etc.5. Before returning the servic

17、ed equipment to the customer, be sure to make the following insulation resistance test to preventthe customer from being exposed to a shock hazard.1.1.1.Leakage Current Cold Check1. Unplug the AC cord and connect a jumper between the two prongs on the plug.2. Measure the resistance value, with an oh

18、mmeter, between the jumpered AC plug and each exposed metallic cabinet part onthe equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to thechassis, the reading should be between 1M and 5.2M.When the exposed metal does not have a return pat

19、h to the chassis, the reading must be 1.1.2.Leakage Current Hot Check1. 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 agood

20、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 outlet and repeat each o

21、f 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 thelimits specified, there is a pos

22、sibility of a shock hazard, and the equipment should be repaired and rechecked before it isreturned to the customer.Figure 1-141.2.Before Repair and AdjustmentDisconnect Power Supply AC to discharge AC capacitor in SMPS P.C.B. and AC Inlet P.C.B. through a 10 , 10 W resistor toground.1.2.1.SMPS P.C.

23、B.Figure 1-2Caution: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, should be 50/60 Hz during power on (In

24、Standby mode) should be 0.30W. (E) Current consumption at AC 120V, 60 Hz during power on (In Standby mode) should be 0.30W. (PP)51.3.Protection CircuitryThe protection circuitry may have operated if either of the following conditions are noticed: No sound is heard when the power is turned on. Sound

25、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”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.If this occurs, follow

26、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 protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.1.4.Safety Parts Inf

27、ormationSafety Parts List: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 thesecritical parts should be replaced with manufacturers specified parts to

28、prevent shock, fire or other hazards. Do not modify theoriginal design without permission of manufacturer.SafetyRef No.Part No.Part Name & DescriptionRemarks20RFKKSUG700ESTOP CABINET ASSY38TKFA22401AREAR PANELG700E-S38TKFA22501AREAR PANELG700PP-SA2K2CM3YY00041AC CORDG700E-SA2K2CS3YY00033AC CORDG700E

29、-SA2K2CG3YY00191AC CORDG700PP-SA3TQBM0061OI(En/Ge/Fr/It/Du)G700E-SA3TQBM0062OI(Sp/Sw/Da/Fi/Po)G700E-SA3TQBM0060OI(En/Cf)G700PP-SPCB4TNPA6359AASMPS P.C.BG700E-SPCB4TNPA6359ABSMPS P.C.BG700PP-S62Warning2.1.Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi-tive (ES) DevicesSome sem

30、iconductor (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. Immediately b

31、efore handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on yourbody 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 pow

32、er 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 unsolder ES devic

33、es.4. Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static (ESD protected)” cangenerate electrical charge sufficient to damage ES devices.5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES device

34、s.6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Mostreplacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or compara-ble conductive material).7. Immediately before r

35、emoving the protective material from the leads of a replacement ES device, touch the protective materialto 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 bodi

36、ly motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as thebrushing 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.General description about Lead Fr

37、ee Solder (PbF)The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for thisequipment in considering the globally environmental conservation. The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead fr

38、ee 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 thatof the normal solder.Definition of PCB Lead Free Solder being usedService caution for repair work using Lead Free Solder (Pb

39、F) 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 solder, it should be well molten and mixed with the original lead free solder. Remove the re

40、maining lead free solder on the PCB cleanly for soldering of the new IC. Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt thelead free solder.The letter of “PbF” is printed either foil side or components side on the PCB u

41、sing the lead free solder. (See right figure)7 Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 35030 degreesC (66286F).Recommended Lead Free Solder (Service Parts Route.) The following 3 types of lead free solder are available through the

42、 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%2.3.Grounding for electrostatic breakdown prevention As for parts that use optical p

43、ick-up (laser diode), the optical pick-up is destroyed by the static electricity of the working environ-ment. Repair in the working environment that is grounded.2.3.1.Worktable grounding Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed and ground the she

44、et.2.3.2.Human body grounding Use the anti-static wrist strap to discharge the static electricity form your body Figure 2-2.Figure 2-283Service Navigation3.1.Service InformationThis service manual contains technical information which will allow service personnels to understand and service this model

45、.Please place orders using the parts list and not the drawing reference numbers.If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original servicemanual. Adjustment of Meter Unit.Refer to Section 10.1 for procedures to adjust the M

46、eter Unit after replacement of Meter Unit and Meter Drive P.C.B.94Specifications? GeneralPower supplyAC 220 V to 240 V,50/60 Hz (E)AC 120 V, 60 Hz (PP)Power consumption85 WPower Consumption in standby modeApprox. 0.3 WDimensions (W x H x D)430 mm (16 15/16”) 148 mm (5 13/16”) 428 mm (16 27/32”)MassA

47、pprox. 12.3 kg (27.2 lbs)Operating temperature range0 C to +40 C(+32 F to +104 F)Operating humidity range35% to 80% RH(no condensation)? ? Amplifier sectionOutput power70 W + 70 W (1 kHz, T.H.D. 0.5%, 8 , 20 kHz LPF)140 W + 140 W (1 kHz, T.H.D.0.5 %, 4 , 20 kHz LPF)Load impedance4 - 16 Frequency res

48、ponsePHONO (MM)20 Hz to 20 kHz (RIAA DEVIA-TION 1 dB, 8 )LINE5 Hz to 80 kHz (3 dB, 8 )DIGITAL5 Hz to 90 kHz (3 dB, 8 )Input sensitivity/Input impedancePHONO (MM)2.5 mV / 47 kLINE200 mV / 22 k? ? Terminals sectionHeadphones JackStereo, 6.3 mm (1/4”)0.75 mW, 32 PCREAR USBType B ConnectorAnalogue input

49、LINE IN 2 Pin jackPHONO (MM)Pin jackDigital inputOPT IN 2 Optical terminalCOAX IN 2Pin jackFormat supportLPCMAnalogue outputLINE OUT Pin jackPRE OUTPin jackSystem portSystem control3.5 mm (1/8”), jack? ? Format sectionUSB-BUSB StandardUSB 2.0 high-speed USBAudio Class 2.0, AsynchronousmodeDSD contro

50、l modeASIO Native mode, DoP modeNote:? Specifications are subject to change without notice.? Mass and dimension are approximate.? DSD is a trademark of Sony Corporation.105Location of Controls and Components5.1.Remote Control Key Button Operation115.2.Main Unit Key Button Operation126Service Mode6.1