Panasonic-SUG700-int-sm 电路图 维修手册.pdf

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1、 Panasonic Corporation 2017. All rights reserved. Unauthorized copying and distribution is a violation of law. PSG1704003CE A6 Stereo Integrated Amplifier Model No.SU-G700E SU-G700PP Product Color: (S).Silver Type TABLE OF CONTENTS PAGEPAGE 1 Safety Precautions- 3 1.1. General Guidelines- 3 1.2. Bef

2、ore Repair and Adjustment- 4 1.3. Protection Circuitry- 5 1.4. Safety Parts Information- 5 2 Warning- 6 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices- 6 2.2. General description about Lead Free Solder (PbF)- 6 2.3. Grounding for electrostatic breakdown

3、prevention - 7 3 Service Navigation- 8 3.1. Service Information - 8 4 Specifications - 9 5 Location of Controls and Components-10 5.1. Remote Control Key Button Operation-10 5.2. Main Unit Key Button Operation-11 6 Service Mode -12 6.1. Doctor Mode-12 6.2. Error Code Table- 15 7 Troubleshooting Guid

4、e - 16 7.1. Check the problem is reproduced- 16 7.2. No power- 17 7.3. Automatically shutdown during operation- 20 7.4. No Display - 21 7.5. Power Indicator - Not Light - 22 7.6. Meter Illumination - No Light - 23 7.7. No Remote Control Operation- 24 7.8. Can not control Volume +/- - 25 7.9. Can not

5、 control Input Selection- 26 7.10. No SUB Function (Firmware UPDATE terminal)- 27 7.11. No Sound input from PC (USB-B), COAX IN or OPT IN - 28 7.12. No Sound from Speaker Unit - 29 7.13. No Sound from Headphone - 30 7.14. No Sound from LINE OUT Terminal- 31 7.15. No Meter Operation - 32 7.16. No Sys

6、tem Control (Control Terminal)- 33 RadioFans.CN 收音机爱 好者资料库 2 7.17. No Audio Output from PRE OUT terminal -34 7.18. No LAPC Function-34 7.19. Pin function of each connectors-35 7.20. Function and Possible failure PCB or Module -36 8 Disassembly and Assembly Instructions-37 8.1. Type of Screws -37 8.2

7、. Disassembly Flow Chart-38 8.3. Main Components and P.C.B. Locations-39 8.4. Disassembly of Top Cabinet Assy-40 8.5. Disassembly of SMPS P.C.B. -40 8.6. Disassembly of AMP P.C.B. -41 8.7. Disassembly of Speaker L P.C.B. and Speaker R P.C.B. -42 8.8. Disassembly of Control P.C.B. -42 8.9. Disassembl

8、y of Digital P.C.B. -43 8.10. Disassembly of REC Out P.C.B. -43 8.11. Disassembly of Main P.C.B. -44 8.12. Disassembly of Front Panel Unit-44 8.13. Disassembly of Selector P.C.B.-45 8.14. Disassembly of Volume P.C.B.-45 8.15. Disassembly of Main SW P.C.B. -46 8.16. Disassembly of OLED P.C.B. -46 8.1

9、7. Disassembly of Shade Sheet B -46 8.18. Disassembly of Headphone P.C.B.-46 8.19. Disassembly of Meter Illumi LED L P.C.B. and Meter Illumi LED R P.C.B.-47 8.20. Disassembly of Meter P.C.B.-47 8.21. Disassembly of Meter Unit-47 9 Service Position-48 9.1. Checking and Repairing of SMPS P.C.B., AMP P

10、.C.B., Main P.C.B., Control P.C.B., Digital P.C.B. and REC Out P.C.B. -48 10 Measurement and Adjustment-49 10.1. Adjustment of the Peak Power Meter-49 11 Block Diagram -51 12 Wiring Connection Diagram-52 13 Exploded View and Replacement Parts List-53 13.1. Cabinet Parts Location 1-53 13.2. Cabinet P

11、arts Location 2-54 13.3. Cabinet Parts Location 3-55 13.4. Packaging-56 13.5. Mechanical Replacement Part List -57 13.6. Electrical Replacement Parts List-59 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 equi

12、pment 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, shock, fire, or other ha

13、zards. 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 the technician from acci

14、dents 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 been overheated or damag

15、ed 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 shock hazards. (This “Safe

16、ty 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 power cord. Replace if wear or damage is evident. 4. After servicing, be

17、 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 from being exposed to a shock hazard. 1.1.1.Leakage Current Cold Check 1

18、. 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 shafts, etc. When the exposed metallic part ha

19、s 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 the AC outlet. Do not use an isolation transformer for this check. 2. Co

20、nnect 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, to measure the potential across the resistor. 4.

21、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 (Simpson Model 229 or equivalent) may be used to make t

22、he 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. Figure 1-1 RadioFans.CN 收音机爱 好者资料库 4 1.2.Before R

23、epair and Adjustment Disconnect Power Supply AC to discharge AC capacitor in SMPS P.C.B. and AC Inlet P.C.B. through a 10 , 10 W resistor to ground. 1.2.1.SMPS P.C.B. Figure 1-2 Caution: DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.

24、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 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) 5 1

25、.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 positive and negat

26、ive 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 on the powe

27、r 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 Information Safety Parts List: There are special components used in this equipment which are important for safety. These pa

28、rts 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 original design without permission of manufacturer. SafetyRe

29、f No.Part No.Part Name & DescriptionRemarks 20RFKKSUG700ESTOP CABINET ASSY 38TKFA22401AREAR PANELG700E-S 38TKFA22501AREAR PANELG700PP-S A2K2CM3YY00041AC CORDG700E-S A2K2CS3YY00033AC CORDG700E-S A2K2CG3YY00191AC CORDG700PP-S A3TQBM0061OI(En/Ge/Fr/It/Du)G700E-S A3TQBM0062OI(Sp/Sw/Da/Fi/Po)G700E-S A3TQ

30、BM0060OI(En/Cf)G700PP-S PCB4TNPA6359AASMPS P.C.BG700E-S PCB4TNPA6359ABSMPS P.C.BG700PP-S 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 electricity. Such components comm

31、only 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-equipped assembly, drain off any E

32、SD 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 assembly equipped with ES devices

33、, 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 solder removal devices not cla

34、ssified 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 protective package until immediat

35、ely 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 replacement ES device, touch t

36、he 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 devices. (Otherwise harmless

37、 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.General description about Lead Free Solder (PbF) The lead free solder has been used in the mounting process o

38、f 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

39、 (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 fo

40、r 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 remaining lead free solder on the PCB cleanly for soldering of the new

41、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 the lead free solder. The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder. (See right figure) 7 Use the soldering i

42、ron (more than 70W) equipped with the temperature control after setting the temperature at 35030 degrees C (66286F). Recommended Lead Free Solder (Service Parts Route.) The following 3 types of lead free solder are available through the 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 electros