Panasonic-RXCS45G-cs-sm 电路图 维修手册.pdf

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1、n RADIO Frequency range FM87.5-108 MHz MW520-1610 kHz SW12.3-7.0 MHz SW27.0-22.0 MHz n TAPE RECORDER Track systemStereo Monitor systemVariable sound monitor Recording systemAC bias(84 kHz) Erasing systemMulti pole Magnet Frequency range Normal40 Hz-12 kHz n GENERAL Power requirement AC110-127 V/220-

2、240 V, 50/60 Hz Power consumption22 W Power consumption in standby mode 2.75 W Battery12 V (Eight R20/LR20, D, UM-1 batteries) 2006 Matsushita Electric Industrial Co. Ltd. All rightsreserved.Unauthorizedcopyingand distribution is a violation of law. RX-CS45GC RX-CS45GU RX-CS45GS RX-CS45GS1 Colour (K

3、).Black Type DC IN12-13.2 V Power output PMPO200 W RMS(max.) (DC 12 V/AC 117 V) 9 W x 2/8.3 W x 2 Speakers10 cm 8 Full range2 Ceramic Tweeter Jacks Input sensitivity / Input inpedance CD/LINE IN Normal316 mV, 33 k High100 mV, 12 k Output impedance Headphones32 Dimensions (W x H x D)518 x 260 x 225 m

4、m Main unit210 x 255 x 230 mm Speaker box163 x 260 x 210 mm Mass6.2 kg with batteries 5.38 kg without batteries Notes: 1. Specifications are subject to change without notice. 2. Mass and dimensions are approximate. Portable Stereo Component System Specifications ORDER NO. MD0603094C3 RadioFans.CN 收音

5、机爱 好者资料库 1 Safety Precautions 3 1.1. General Guidelines 3 1.2. Caution for AC Cord (For GS only) 4 1.3. Before Use 5 1.4. Before Repair and Adjustment 5 1.5. Protection Circuitry 5 2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices 6 3 Warning 7 3.1. Service c

6、aution based on legal restrictions 7 4 Accessories 8 5 Operating Instructions Procedures 9 5.1. Main Operation Buttons 9 6 Assembling and Disassembling 10 6.1. Caution 10 6.2. Disassembly Procedures 10 6.3. Disassembly Flow chart 10 6.4. Main Parts Location Diagram 11 6.5. Before Disassembly 11 6.6.

7、 Disassembly of Front Cabinet 12 6.7. Disassembly Equalizer P.C.B., CD/Line In P.C.B. and Main P.C.B. 12 6.8. Disassembly of Deck Mechanism Unit 14 6.9. Disassembly of Tuner P.C.B. 14 6.10. Disassembly of Power P.C.B./ Battery P.C.B. 15 6.11. Disassembly of Speaker 16 7 Service Positions 17 7.1. Che

8、cking Procedures 17 7.2. Checking and Repairing of the Equalizer P.C.B., CD/Line In P.C.B. and Main P.C.B. 17 7.3. Checking and Repairing of the Deck P.C.B. 18 7.4. Checking and Repairing of the Tuner P.C.B. 19 7.5. Checking and Repairing of the Power P.C.B. 19 8 Adjustment Procedures 20 8.1. Tuner

9、Section 20 8.2. Deck Section 21 8.3. Alignment Point 22 9 Wiring Diagrams 23 10 Notes of Schematic Diagrams 25 11 Schematic Diagrams 27 12 Printed Circuit Board Diagrams 29 13 Illustration of ICs, Transistors and Diodes 31 14 Exploded Views 32 14.1. Deck Mechanism Parts Location (RAA0945-2N) 33 14.2

10、. Cabinet Parts Location 35 14.3. Packaging Materials and Accessories 37 15 Replacement Parts List 39 CONTENTS Page Page 2 RX-CS45GC / RX-CS45GU / RX-CS45GS / RX-CS45GS1 RadioFans.CN 收音机爱 好者资料库 1 Safety Precautions 1.1. General Guidelines 1. When servicing observe the original lead dress. If a short

11、 circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servicing, ensure that all the protective devices such as insulation barriers, insulation papers shields are properly installed. 3. After servicing, check for leakage current to prevent from bei

12、ng 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. Using an ohmmeter measure the resistance value, between the jumpered AC plug and each exposed metallic cabinet part on the equipment such as screwheads, co

13、nnectors, 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 (See Fig. 1) Fig. 1 1. Plug the AC cord d

14、irectly 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 a good earth ground such as a water pipe, as shown in Fig. 1. 3. Use an AC voltmeter, with 1000

15、 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 of the above measurements. 6. The potential at any point should not exceed 0.75 volts RMS.

16、 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. Should the measurement outside of the limits specified, there is a possibility of a shock hazard, and equipment should be examine and reached before it is ret

17、urned to the customer. 3 RX-CS45GC / RX-CS45GU / RX-CS45GS / RX-CS45GS1 RadioFans.CN 收音机爱 好者资料库 1.2. Caution for AC Cord (For GS only) 4 RX-CS45GC / RX-CS45GU / RX-CS45GS / RX-CS45GS1 1.3. Before Use Be sure to disconnect the mains cord before adjusting the voltage selector. Use a minus (-) screwdri

18、ver to set the voltage selector (on the rear panel) to the voltage setting for the area in which the unit will be sure. (If the power supply in your area is 220 V to 240 V, set to “220 V to 240 V” position.) Note that this unit will be seriously damaged if this setting is not made correctly. (There

19、is no voltage selector for some countries; the correct voltage is already set.) 1.4. Before Repair and Adjustment 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 a

20、void overcurrent. Current consumption in AC 110 V,127 V, 220 V or 240 V at 50 Hz in NO SIGNAL mode at (volume minimum) should be 90 mA, 110 mA, 50 mA or 60 mA respectively. Battery current consumption (12 V DC) is 250 mA. 1.5. Protection Circuitry The protection circuitry may have operated if either

21、 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 with an impedance l

22、ess 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 circuitry functions, the uni

23、t will not operate unless the power is first turned off and then on again. 5 RX-CS45GC / RX-CS45GU / RX-CS45GS / RX-CS45GS1 2 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by electricity. Such c

24、omponents commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage caused by ele

25、ctro static discharge (ESD). 1. Immediately 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 fo

26、r potential shock reasons prior to applying 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 aluminium foil, to prevent electrostatic charge build up or exposure of the assembly. 3. Use only a grounded

27、-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 (ESD protected)” can generate electrical charge to damage ES devices. 5. Do not use freon-propelled chemicals. These can generate electri

28、cal charges sufficient to damage 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, aluminium foil or comparable

29、conductive material). 7. Immediately 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 observ

30、e all other safety precautions. 8. Minimize body 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) sufficient to damage an ES

31、 device). 6 RX-CS45GC / RX-CS45GU / RX-CS45GS / RX-CS45GS1 3 Warning 3.1. Service caution based on legal restrictions 3.1.1. 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

32、 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 point of the lead free solder is higher app

33、rox.30 degrees C (86F) more than that of the normal solder. Definition of PCB Lead Free Solder being used The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder. (See right figure) Service caution for repair work using Lead Free Solder (PbF) The lead

34、 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 remaining le

35、ad 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 the lead free solder. Use the soldering iron (more than 70W) equipped with the temperature control after sett

36、ing 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

37、(Sn), 96.5%, Silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3% 7 RX-CS45GC / RX-CS45GU / RX-CS45GS / RX-CS45GS1 4 Accessories AC Cord. (For GC/GS1/GU) AC Cord. (For GS only) 8 RX-CS45GC / RX-CS45GU / RX-CS45GS / RX-CS45GS1 5 Operating Instructions Procedures 5.1. Main Oper

38、ation Buttons 9 RX-CS45GC / RX-CS45GU / RX-CS45GS / RX-CS45GS1 6 Assembling and Disassembling 6.1. Caution “Attention Servicer” Some chassis components may have sharp edges. Be careful when disassembly and servicing. 1. This section describes procedure for checking the operation of the major printed

39、 circuit boards and replacing the main components. 2. For reassembly after operation checks or replacement, reverse the respective procedures. 3. Select items from the following index when checks or replacement are required. 4. Refer to the Part No.on the page of “Parts Location and Replacement Part

40、s List” if necessary. 6.2. Disassembly Procedures Disassembly of the Front Cabinet Disassembly of the Equalizer P.C.B., CD/Line In P.C.B. and Main P.C.B. Disassembly of the Deck Mechanism Unit and Deck P.C.B. Disassembly of the Tuner P.C.B. Disassembly of the Power P.C.B./ Battery P.C.B. Disassembly

41、 of the Speaker 6.3. Disassembly Flow chart The following chart is the procedure for disassembly the casing and inside parts for internal inspection when carrying out the servicing. To assemble the unit, reverse the steps shown in the chart as below. 10 RX-CS45GC / RX-CS45GU / RX-CS45GS / RX-CS45GS1

42、 6.4. Main Parts Location Diagram 6.5. Before Disassembly Important notes: Ensure all the settings as below are set before proceeding to the disassemble steps. Step 1: Set fine tuning knob to centre. Step 2: Set tuning knob until dial pointer line up at “0” point graduation as shown in the figure. S

43、tep 3: Set function selector to OFF. Step 4: Set volume knob to minimum. Step 5: Set band switch to SW2. Step 6: Set FM mode/ beat proof selector to normal. 11 RX-CS45GC / RX-CS45GU / RX-CS45GS / RX-CS45GS1 6.6. Disassembly of Front Cabinet Step 1: Remove 6 screws. Step 2: Slightly push the front ca

44、binet as arrow shown. Step 3: Disconnect the connector (CP903). 6.7. Disassembly Equalizer P.C.B., CD/Line In P.C.B. and Main P.C.B. Follow (Step 1 - Step 3) of item 6.6. 6.7.1. Disassembly Equalizer P.C.B. Step 1: Remove 4 screws. Step 2: Unsolder wires (W301 and W302) from Equalizer P.C.B. 6.7.2.

45、Disassembly CD/Line In P.C.B. Step 1: Remove 2 screws. Step 2: Unsolder wire (W908) from CD/Line In P.C.B. 12 RX-CS45GC / RX-CS45GU / RX-CS45GS / RX-CS45GS1 6.7.3. Disassembly Main P.C.B. Step 1: Remove volume knob. Step 2: Disconnect the connectors (CP303 and CP304). Follow (Step 1) of item 6.7.1.

46、Follow (Step 1) of item 6.7.2 Step 3: Release the claw. Step 4: Remove the Main P.C.B. as arrow shown. 6.7.3.1. Replacement of Power IC Follow the (Step 1 - Step 4) of item 6.7.3. Step 1: Remove 2 screws. Step 2: Unsolder all the pins for solder side of Main P.C.B. 13 RX-CS45GC / RX-CS45GU / RX-CS45

47、GS / RX-CS45GS1 6.8. Disassembly of Deck Mechanism Unit Follow (Step 1 - Step 3) of item 6.6. Step 1: Press the stop/eject button. Step 2: Disconnect the connector (CP303). Step 3: Remove 2 screws. Step 4: Release the claw. 6.8.1. Disassembly of Deck P.C.B. Follow (Step 1 - Step 4) of item 6.8. Step

48、 1: Disconnect the connector (CP305). Step 2: Unsolder motor wire. Step 3: Remove 2 screws. Step 4: Release 3 claws. 6.9. Disassembly of Tuner P.C.B. Follow (Step 1 - Step 3) of item 6.6. Step 1: Disconnect the connector (CP304) from Main P.C.B. Step 2: Remove 1 screw from each Support P.C.B. Step 3

49、: Remove 2 screws. 14 RX-CS45GC / RX-CS45GU / RX-CS45GS / RX-CS45GS1 Step 4: Remove the Tuner P.C.B as arrow shown. 6.9.1. Disassembly of Varicon Follow (Step 1 - Step 4) of item 6.9. Step 1: Remove 3 screws. Step 2: Remove the dial chasis. Step 3: Remove 1 screw. Step 4: Remove the varicon gear. 6.10. Disassembly of Power P.C.B./ Battery P.C.B. Follow (Step 1 - Step 3) of i