Panasonic-RXD55EE-cs-sm 电路图 维修手册.pdf

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1、 Panasonic Corporation 2010. All rights reserved. Unauthorized copying and distribution is a violation of law. PSG1005030AE Portable Stereo CD System Model No.RX-D55EE Product Color: (K).Black Type TABLE OF CONTENTS PAGEPAGE 1 Safety Precautions- 3 1.1. General Guidelines- 3 1.2. Before Repair and A

2、djustment- 4 1.3. Caution For Fuse Replacement- 4 1.4. Protection Circuitry- 4 1.5. Safety Part Information- 4 2 Warning- 5 2.1. Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices- 5 2.2. Precaution of Laser Diode- 6 2.3. Service caution based on Legal restricti

3、ons- 7 2.4. Handling Precaution for Traverse Unit-8 3 Service Navigation - 10 3.1. Service Information-10 3.2. Notes-10 3.3. Different Points - 11 4 Specifications- 12 5 Illustration of ICs, Transistors and Diodes - 13 6 Schematic Diagram - 15 6.1. MAIN CIRCUIT (1/6) -15 6.2. MAIN CIRCUIT (2/6) -16

4、6.3. MAIN CIRCUIT (3/6) -17 Notes: This model is based on RX-D55EG-K. Please refer to the original service manual (Order no. PSG1004005CE). RadioFans.CN 收音机爱 好者资料库 2 6.4. MAIN CIRCUIT (4/6) -18 6.5. MAIN CIRCUIT (5/6) -19 6.6. MAIN CIRCUIT (6/6) -20 6.7. POWER CIRCUIT-21 7 Printed Circuit Board -22

5、7.1. MAIN P.C.B. -22 7.2. DECK P.C.B. -23 7.3. POWER, BATTERY (1), BATTERY (2) & MUSIC PORT P.C.B.-24 8 Exploded View and Replacement Parts List -25 8.1. Exploded View and Mechanical replacement Parts List -25 8.2. Electrical Replacement Parts List-31 RadioFans.CN 收音机爱 好者资料库 3 1Safety Precautions 1.

6、1.General Guidelines 1. 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 circuit. 2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are

7、 properly installed. 3. After servicing, carry out 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 a

8、n 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 the chassis, the reading should be between 1M and 5.2M. When the exposed metal does not have a retu

9、rn path to the chas- sis, 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 watts resistor, in parallel with a 0.15F capacitors, between each exposed metallic part on the set

10、and a good earth ground such as a water pipe, as shown in Figure 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 r

11、epeat 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, leakage current must not exceed 1/2 milliamp. In case a measurement is outside of the limits specified,

12、 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 RadioFans.CN 收音机爱 好者资料库 4 1.2.Before Repair and Adjustment Caution : DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may dest

13、roy solid state devices. After repairs are completed, restore power gradually using a variac, to avoid overcurrent. Current consumption at AC 230V, 50Hz in TUNER mode at volume (min) should be (300 mA). 1.3.Caution For Fuse Replacement 1.4.Protection Circuitry The protection circuitry may have opera

14、ted 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 shorted, or if speaker systems

15、 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: When the protection circuitr

16、y functions, the unit will not operate unless the power is first turned off and then on again. 1.5.Safety Part Information Safety 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 & Repla

17、cement 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. Table 1 SafetyRef. No.Part No.Part Name & DescriptionRemarks 14RKHN0005B-H

18、HANDLE 401RD-DAPX001-VTRAVERSE UNIT A2K2CQ2CA00007AC CORD A3RQTX1037-RO/I BOOK (Ru/Ur) PCB3REPNT0063HPOWER P.C.B.(RTL) L5901ELF15N035ANLINE FILTER T5903G4C5ACH00007TRANSFORMER Z5902ERZVA5Z471ZNR SURGE F5901K5D402BLA013FUSE F5902K5D162BLA013FUSE FP4100K5G502A00039FUSE PROTECTOR FP5903K5G502A00039FUSE

19、 PROTECTOR JK5901K2AA2B000014AC INLET ZA5901K3GE1ZZ00001FUSE HOLDER ZA5902K3GE1ZZ00001FUSE HOLDER ZA5903K3GE1ZZ00001FUSE HOLDER ZA5904K3GE1ZZ00001FUSE HOLDER R4149D0AF1R5JA1131.5 1/8W R4153D0AF1R5JA1131.5 1/8W R4154D0AF1R5JA1131.5 1/8W 5 2Warning 2.1.Prevention of Electro Static Discharge (ESD) to E

20、lectrostatically Sensi- tive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec- trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and

21、 semiconductor “chip” components. 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-equiped assembly, drain off any ESD on your body by touching

22、 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 equiped with ES devices, place the assembly on a co

23、nductive surface such as alumin- ium foil, to prevent electrostatic charge build up 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 remover device. Some solder removal devices not classified as “anti-static (E

24、SD 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 immediately before you are ready t

25、o install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or compara- ble conductive material). 7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to

26、 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 motion such as the brus

27、hing 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). 6 2.2.Precaution of Laser Diode Caution: This product utilizes a laser diode with the unit turned on, invisible laser radiation is emitte

28、d from the pickup lens. Wavelength: 795 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 v

29、ariable 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 SPEC

30、IFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. 7 2.3.Service caution based on Legal restrictions 2.3.1.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 equipm

31、ent 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 point of the lead free solder is higher approx.30 degre

32、es 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 solder is used. (Definition: The letter of “PbF” is prin

33、ted 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

34、 normal lead solder, it takes the longer time to melt the lead free solder. Use the soldering iron (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 s

35、older 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% The letter of “PbF” is printed either foil side

36、 or components side on the PCB using the lead free solder. (See right figure) 8 2.4.Handling Precaution for Traverse Unit The laser diode in the optical pickup unit may break down due to static electricity of clothes or human body. Special care must be taken avoid caution to electrostatic breakdown

37、when servicing and handling the laser diode in the traverse unit. 2.4.1.Cautions to Be Taken in Handling the Optical Pickup Unit The laser diode in the optical pickup unit may be damaged due to electrostatic discharge generating from clothes or human body. Special care must be taken avoid caution to

38、 electrostatic discharge damage when servicing the laser diode. 1. Do not give a considerable shock to the optical pickup unit as it has an extremely high-precise structure. 2. To prevent the laser diode from the electrostatic discharge damage, the flexible cable of the optical pickup unit removed s

39、hould be short-circuited with a short pin or a clip. 3. The flexible cable may be cut off if an excessive force is applied to it. Use caution when handling the flexible cable. 4. The antistatic FPC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting th

40、e flexi- ble cable, cut off the antistatic FPC. 2.4.2.Grounding for electrostatic breakdown prevention Some devices such as the CD player use the optical pickup (laser diode) and the optical pickup will be damaged by static electricity in the working environment. Proceed servicing works under the wo

41、rking environment where grounding works is completed. 2.4.2.1.Worktable grounding 1. Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed, and ground the sheet. 9 2.4.2.2.Human body grounding 1. Use the anti-static wrist strap to discharge the static electri

42、city form your body (Figure 2). Figure 2 10 3Service Navigation 3.1.Service Information This service manual contains technical information which will allow service personnels to understand and service this model. Please place orders using the parts list and not the drawing reference numbers. If the

43、circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service manual. CD Mechanism Unit (DLS6F): 1) This model uses CD Mechanism Unit (DLS6F). Micro-processor: 1) The following components are supplied as an assembled part. Micro-proc

44、essor IC, (IC2100) is supplied as assembled part (RFKWMD55EG). 3.2.Notes This service manual contains technical information which will allow service personnels to understand and service this model. Please place orders using the parts list and not the drawing reference numbers. If the circuit is chan

45、ged or modified, this information will be followed by supplement service manual to be filed with original service manual. 1) This service manual does not contains the following information This simplified service manual is base on RX-D55EG-K. Please refer to the original service manual, RX-D55EG-K (

46、Order No. PSG1004005CE) for the below mention contents. - Location of Controls and Components - Self Diagnostic and Doctor Mode Setting - Service Fixture & Tools - Disassembly and Assembly Instructions - Disassembly and Assembly of Traverse Unit - Service Position - Measurements and Adjustments - Voltage Measurement & Waveform Char