Technics-STG30-ms-sm 电路图 维修手册.pdf

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1、 Panasonic Corporation 2016. All rights reserved. Unauthorized copying and distribution is a violation of law. PSG1603030CE A6 Music Server Model No.ST-G30E ST-G30PP ST-G30LE ST-G30LPP Product Color: (S).Silver Type TABLE OF CONTENTS PAGEPAGE 1 Safety Precautions- 3 1.1. General Guidelines- 3 1.2. B

2、efore 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) Devices- 7 2.2. Caution for Lithium Battery- 7 2.3. Precaution of Laser

3、Diode- 8 2.4. General description about Lead Free Solder (PbF)- 8 2.5. Handling Precautions for Traverse Assy- 9 2.6. Grounding for electrostatic breakdown prevention - 9 3 Service Navigation-11 3.1. ST-G30 controller-11 3.2. Install SSD (For ST-G30E/PP Only)-12 3.3. Connection with the music server

4、- 14 4 Specifications- 16 5 Location of Controls and Components- 17 5.1. Main Unit Key Button Operation- 17 6 Service Mode- 19 6.1. Entering Service Mode - 19 6.2. Service Mode Menu- 20 7 Troubleshooting Guide - 21 7.1. Preparation - 21 7.2. No Power- 22 7.3. Immediately Power Falls- 28 7.4. Technic

5、s Music App No Display- 36 7.5. IMPORT/BACKUP Failure- 44 7.6. USB-DAC No Detect- 48 7.7. CD No Work- 52 7.8. SSD No Access - 55 7.9. LED No Lighting- 60 7.10. LED No Lighting (AC input, SMPS P.C.B. operate normal)- 67 RadioFans.CN 收音机爱 好者资料库 2 7.11. After Replacement Digital P.C.B., Please Adjust T

6、ime Clock-68 7.12. LED Display State-69 8 Disassembly and Assembly Instructions-71 8.1. Type of Screws -71 8.2. Disassembly Flow Chart-72 8.3. Main Components and P.C.B. Locations-73 8.4. Disassembly of Top Cabinet Unit -74 8.5. Disassembly of Side AL Panel (L) & (R) Unit -74 8.6. Disassembly of Fro

7、nt AL Panel-74 8.7. Disassembly of Power Switch P.C.B. -75 8.8. Disassembly of CD O/C Switch P.C.B -75 8.9. Disassembly of CD Drive Unit -76 8.10. Disassembly of Digital P.C.B. -76 8.11. Disassembly of SSD Drive-77 8.12. Disassembly of SSD P.C.B. -77 8.13. Disassembly of Main P.C.B.-78 8.14. Disasse

8、mbly of AC Inlet P.C.B.-79 8.15. Disassembly of SMPS P.C.B. -79 9 Service Position-80 9.1. Checking P.C.B. -80 10 Block Diagram -81 10.1. Signal Section-81 10.2. Power Supply Section -82 11 Wiring Connection Diagram-83 12 Exploded View and Replacement Parts List-84 12.1. Cabinet Parts Location 1-84

9、12.2. Cabinet Parts Location 2-85 12.3. Packaging-86 12.4. Mechanical Replacement Part List -87 12.5. Electrical Replacement Parts List-89 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 equipment which are imp

10、ortant 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 hazards. Do not modif

11、y 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 accidents resulting in

12、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 damaged by the short cir

13、cuit. 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 “Safety Precaution” is a

14、pplied 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 sure to restore th

15、e 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. Unplug the AC cor

16、d 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 has a return path to

17、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. Connect a 1.5k, 10 wa

18、tts 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. Check each exposed

19、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 the hot checks, leak

20、age 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 Repair and Adjustmen

21、t Disconnect AC power to discharge AC Capacitors (C1700, C1701, C1702, C1703, C1704, C1706, C1714) through a 10 , 10 W resistor to ground. Figure 1-1 Caution: DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices. After repairs are completed,

22、 restore power gradually using a variac to avoid overcurrent. Current consumption at AC 220V - 240V, during power on (Network Standby OFF) should be 0.30W. (E/LE) Current consumption at AC 120V, during power on (Network Standby OFF) should be 0.30W. (PP/LPP) 1.3.Protection Circuitry The protection c

23、ircuitry 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 “shorte

24、d”, 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 power once again after one minute. Note: Whe

25、n 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 used in this equipment which are important for safety.

26、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 original design without permission of manufacturer.

27、SafetyRef No.Part No.Part Name & DescriptionRemarks 14RGR0482B-A1REAR PANELE 14RGR0482B-CREAR PANELPP 14RGR0482B-DREAR PANELLE 14RGR0428B-FREAR PANELLPP 15RYP2153-SSIDE AL PANEL R UNIT 19TTFA0307TOP CABINET UNIT 20TTPA0617FRONT PANEL SUB ASSY 64RYP2154-SSIDE AL PANEL L UNIT 65SXY0026CD DRIVE UNIT A1

28、K2CG3YY00191AC CORDPP A1K2CM3YY00041AC CORDE A1K2CS3YY00033AC CORDE A2SQT1219O/I BOOK (En)E A2SQT1220O/I BOOK (Ge/Fr/It/Du)E A2SQT1221O/I BOOK (Sp/Sw/Da/Fi)E A2SQT1342O/I BOOK (En)LE A2SQT1343O/I BOOK(Ge/Fr/It/Du)LE A2SQT1344O/I BOOK (Sp/Sw/Da/Fi)LE A2SQT1222O/I BOOK (En/Cf)PP A2SQT1345O/I BOOK (En/

29、Cf)LPP PCB5SEP0589AASMPS P.C.B PCB7SEP0769AAAC INLET P.C.B F1700K5G312Y00007FUSE F1701K5G202Y00006FUSE 7 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 c

30、omponents 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-equipped assembly, d

31、rain 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 assembly equipped w

32、ith 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 solder removal d

33、evices 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 protective package

34、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 replacement ES d

35、evice, 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 devices. (Othe

36、rwise 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.Caution for Lithium Battery (English) Caution Danger of explosion if battery is incorrectly rep

37、laced. Replace only with the same or equivalent type. Changing the battery Replace the completed circuit board. Do not replace only the battery. (Canadian French) Mise en garde Danger dexplosion si la batterie nest pas remplace correctement. Remplacez-la uniquement par une batterie identique ou de t

38、ype quivalent. Changement de la batterie Remplacez la carte de circuits imprims en entier. Ne remplacez pas seulement la batterie. 8 2.3.Precaution of Laser Diode Caution: This product utilizes a laser diode with the unit turned “on”, invisible laser radiation is emitted from the pickup lens. Wavele

39、ngth: 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 exposed laser diode is dangerous. 2. Do not adjust the variable resistor on the pickup

40、 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. Figure 2-1 2.4.General description about Lead Free Solder (PbF) The lead free solder has been used in the mounting process of all electrical components

41、 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 poin

42、t 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 for which the lead free solde

43、r 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 IC. Since the melting point of the lead free solder is higher than that of the normal