Panasonic-RXES23G-cs-sm 电路图 维修手册.pdf

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1、n RADIO Frequency range FM87.50-108.00 MHz (50 kHz steps) AM522-1629 kHz (9 kHz steps) 520-1630 kHz (10 kHz steps) n CD PLAYER Sampling frequency44.1 kHz Decoding16 bit linear Beam sourceSemiconductor laser (wavelength 780 nm) No. of channels2 channel, stereo Wow and flutterBelow measurable limit D/

2、A converterMASH (1 bit DAC) n TAPE RECORDER Track systemStereo Monitor systemVariable sound monitor Recording systemAC bias Erasing systemMulti Pole magnet Frequency range Normal position50-14000 Hz n GENERAL Speakers8 cm 2.7 x 2 Jacks 2005 Matsushita Electric Industrial Co. Ltd. All rightsreserved.

3、Unauthorizedcopyingand distribution is a violation of law. RX-ES23GC RX-ES23GS RX-ES23GN RX-ES23GT Colour (S).Silver Type OutputPhones: 3.5 mm stereo (16-32) Power requirement (For GC / GS) AC110-127 V / 220-240 V, 50 / 60 Hz Power consumption20 W Power requirement (For GN) AC230-240 V, 50 Hz Power

4、consumption23 W Power requirement (For GT) AC110 V, 60 Hz Power consumption26 W Battery12 V Eight R20/LR20 (D, UM-1) batteries l Do not use rechargeable type batteries Memory backup for computer/clock 6 V Four R6/LR6 (AA, UM-3) batteries l Do not use rechargeable type batteries Dimensions529 mm (W)

5、x 144 mm (H) x 276 mm (D) Mass (For GC / GS / GN)3.9 kg without batteries Mass (For GT)3.6 kg without batteries Power consumption in standby mode (For GC / GS) 3.0 W (117 V) 3.5 W (240 V) Power consumption in standby mode (For GN / GT) 2.3 W Portable Stereo CD System Specification Order No. MD050201

6、8C3 RadioFans.CN 收音机爱 好者资料库 Notes: 1. Specifications are subject to change without notice. 2. Mass and dimensions are approximate 1 Safety Precautions 3 1.1. GENERAL GUIDELINES 3 2 Caution for AC Mains Lead 4 3 Before Use 5 4 Before Repair and Adjustment 5 5 Protection Circuitry 5 6 Handling the Lea

7、d Solder 5 6.1. About lead free solder (PbF) 5 7 Precaution of Laser Diode 6 8 Handling Precautions For Traverse Deck 7 9 Accessories 8 10 Operation Procedures 9 10.1. Main unit 9 10.2. Remote control 10 11 Information on MP3 11 12 Disassembly and Main Component Replacement Procedures and Operationa

8、l Check 12 12.1. Disassembly flow chart 12 12.2. Checking Procedure for each major P.C.B. 13 12.3. Procedures for Replacing Pinch Roller and Head Block (Deck Mechanism Unit) 21 12.4. Procedures for Replacing Motor, Capstan Belt A, Capstan Belt B, and Winding Belt (Deck Mechanism Unit) 21 12.5. Proce

9、dures for Replacing Parts on Deck Mechanism PCB 23 12.6. Procedures of Replacing Traverse Base (Unit), Driving Gear, and Cam Gear (CD Mechanism Unit) 23 12.7. Procedures for Replacing Optical Pickup (CD Mechanism Unit) 26 12.8. Procedures for Replacement Traverse Gear A and Traverse Gear B (CD Mecha

10、nism Unit) 27 13 Procedure for checking of the major P.C.B. 29 13.1. Checking the Main P.C.B., Panel P.C.B., Deck Mechanism P.C.B., CD Servo P.C.B., Battery P.C.B., Sensor P.C.B., Power and Standby LED P.C.B. 29 14 Self Diagnostic Function 30 14.1. Self-Diagnosis Function 30 14.2. Setting of doctor

11、mode 32 15 Measurements and Adjustments 38 15.1. Tuner Section 38 15.2. Deck Section 39 16 Voltage Measurement 41 16.1. Main P.C.B. 41 16.2. CD Servo P.C.B. 42 17 Waveform Chart 43 18 Notes of Schematic Diagram 44 19 Schematic Diagram 45 19.1. CD SERVO CIRCUIT 45 19.2. MAIN CIRCUIT 47 19.3. MAIN (TU

12、NER) CIRCUIT 54 19.4. MAIN (DECK) CIRCUIT and DECK MECHANISM CIRCUIT 56 19.5. PANEL CIRCUIT, STANDBY LED CIRCUIT, BATTERY CIRCUIT, SENSOR CIRCUIT and POWER CIRCUIT 58 20 Printed Circuit Board 59 20.1. CD SERVO P.C.B. 59 20.2. MAIN P.C.B. 60 20.3. PANEL P.C.B. and DECK MECHANISM P.C.B. 62 20.4. STAND

13、BY LED P.C.B., BATTERY P.C.B. and SENSOR P.C.B. 63 20.5. POWER P.C.B. 64 21 Wiring Connection Diagram 65 22 Type Illustration of IC 痴, Transistors and Diodes 67 23 Terminal Function Of IC 痴 68 23.1. IC801 (MN101C74GAA1): Microprocessor 68 24 Troubleshooting Flowchart (CD Section Circuit) 69 25 Parts

14、 Location and Replacement Parts List 71 25.1. Deck Mechanism (RAA4401-1V) 72 25.2. CD Loading Mechanism 74 25.3. Cabinet Part List 76 25.4. Electrical Part List 78 25.5. Packaging Materials the correct voltage is already set.) 4 Before Repair and Adjustment Disconnect AC power, discharge Power Suppl

15、y Capacitors C301, C119, C219, C131, C231, C310, C307, C309 and C331 through a 10 , 1 W resistor to ground. DO NOT SHORT-CIRCUIT DIRECTLY (with a screw driver blade, for instance), as this may destroy solid state devices. After repairs are completed, restore power gradually using a variac, to avoid

16、overcurrent. (For GN) Current consumption at AC 230 - 240 V, 50 Hz in NO SIGNAL mode should be 180 mA respectively. (For GC/GS) Current consumption at AC 110 - 127 V / 220 - 240 V, 50/60 Hz in NO SIGNAL mode should be 200 mA, 180mA respectively. (For GT) Current consumption at AC 110 V, 60 Hz in NO

17、SIGNAL mode should be 180 mA respectively. 5 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. Stops during a performance. The function of this circuitry is to prevent circuitry damage if,

18、 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 the procedure outlines below: 1. Turn off the power. 2. Determine the cause of the problem

19、 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. 6 Handling the Lead Solder 6.1. About lead free solder (PbF) Distinction of PbF P.C.B. : P.C.B.s (manufa

20、ctured) using lead free solder will have a PbF stamp on the P.C.B. Caution: Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70F (30 - 40C) higher. Please use a high temperature soldering iron. In case of the soldering iron with temperature control,

21、 please set it to 700 20F (370 10C). Pb free solder will tend to splash when heated too high (about 1100F/600C). When soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be sure to heat the soldering points with the Pb free solder until it melts enoug

22、h. 5 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT This unit utilizes a class 1 laser. Invisible laser radiation is emitted from the optical pickup lens. When the unit is turned on: 7 Precaution of Laser Diode CAUTION: 1. Do not look directly into the pick up lens. 2. Do not use optical instruments

23、to look at the pick up lens. 3. Do not adjust the preset variable resistor on the pickup lens. 4. Do not disassemble the optical pick up unit. 5. If the optical pick up is replaced, use the manufacturers specified replacement pick up only. 6. Use of control or adjustments or performance of procedure

24、s other than those specified herein may result in hazardous radiation exposure. CAUTION! THIS PRODUCT UTILIZES A LASER. USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. 6 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-E

25、S23GT The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by static electricity of clothes or human body. So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup). l Handling of CD traverse deck (optical pickup)

26、 1. Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical shock. 2. The short land between the No.4 (LD) and No.5 (GND) pins on the flexible board (FFC) is shorted with a solder build-up to prevent damage to the laser diode. 3. Take care n

27、ot to apply excessive stress to the flexible board (FFC board) (Fig 6.1). 4. Donotturnthevariableresistor(laserpower adjustment). It has already been adjusted. Fig 6.1 l Grounding for electrostatic breakdown prevention 1. Human body grounding (Fig 6.2) Use the anti-static wrist strap to discharge th

28、e static electricity from your body. 2. Work table grounding (Fig 6.2) Put a conductive material (sheet) or steel sheet on the area where the traverse deck (optical pickup) is placed, and ground the sheet. Caution : The static electricity of your clothes will not be grounded through the wrist strap.

29、 So, take care not to let your clothes touch the traverse deck (optical pickup). Fig 6.2 Caution when Replacing the Optical Pickup : The traverse has a short point shorted with solder to protect the laser diode against electrostatics breakdown. Be sure to remove the solder from the short point befor

30、e making connections. 8 Handling Precautions For Traverse Deck 7 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT 9 Accessories Note : Refer to Packing Materials & Accessories Parts List (Section 25.5) for the part number. Remote Control.1pc AC cord.1 pc (For GN) AC cord.1 pc (For GC) AC cord.1 pc (For

31、 GS) AC cord.1 pc (For GT) AC cord adaptor.1 pc (For GC) 8 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT 10 Operation Procedures 10.1. Main unit 9 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT 10.2. Remote control 10 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT 11 Information on MP3 11 RX-ES23GC /

32、RX-ES23GS / RX-ES23GN / RX-ES23GT 12 Disassembly and Main Component Replacement Procedures and Operational Check “ATTENTION SERVICER” Some chassis components may be have sharp edges. Be careful when disassembly and servicing. 1. This section describes procedures for checking the operation of the maj

33、or printed circuit boards and replacing the main components. 2. For reassembly after operation checks or replacement, reverse the respective procedures. Special reassembly procedures are described only when required. 3. Select items from the following index when checks or replacement are required. W

34、arning: This product uses a laser diode. Refer to “Precaution of Laser Diode”. 12.1. Disassembly flow chart The following chart is the procedure for disassembling the unit and inside parts for internal inspection when carrying out the servicing. To assemble the unit, reverse the steps shown in the c

35、hart below. 12 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT 12.2.1. Disassembly of Top Cabinet Unit. Step 1: Remove 10 screws. Step 2: Remove 2 screws. Step 3: Flip up the handle as arrow direction shown. Step 4: Use a screw driver and insert into the hole. Slide the screw driver to the direction s

36、hown to open the cassette panel. Note: Be careful not to exert strong force as it may cause damage to the chassis. 12.2. Checking Procedure for each major P.C.B. 13 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT Step 5: Cassette panel will automatically open. Step 6: Remove 2 screws. Step 7: Lift up

37、the Top Cabinet as arrow shown. Step 8: Flip the Top Cabinet over as arrow shown. Step 9: Detach the FFC wire (CP401). 12.2.2. Disassembly of Panel P.C.B. Follow (step 1) to (step 9) of item 12.2.1. Step 1: Lift the upper section of the front panel slightly towards you as arrow shown. Step 2: While

38、lifting, push the lower section of the front panel in the direction shown by the arrow to release the catches. 14 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT Step 3: Remove the Front Panel from Top Cabinet as arrow shown. Step 4: Remove 6 screws. Step 5: Release 2 catches. Step 6: Flip over the Co

39、ntrol Button Unit with the Panel P.C.B. as arrow shown. Step 7: Remove the Jog Knob using a screwdriver as arrow shown. Caution: Do not exert strong force as it may cause damage to the top cabinet. 15 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT Step 8: Release 6 catches. Step 9: Remove the Panel P

40、.C.B. as arrow shown. Step 10: Flip the Panel P.C.B. over. 12.2.3. Disassembly of Speakers. Follow (step 1) to (step 9) of item 12.2.1. Follow (step 1) to (step 10) of item 12.2.2. Step 1: Remove 8 screws. Step 2: Flip the both side speakers as arrow shown. Step 3: Desolder the wire at speaker termi

41、nal to remove speaker. 12.2.4. Disassembly of Deck Mechanism. Follow (step 1) to (step 9) of item 12.2.1. 16 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT Step 1: Remove 4 screws. Note: Be careful of connectors (CP1301 & CP1902) while removing the deck mechanism. Step 2: Lift the deck mechanism as a

42、rrow shown. Step 3: Release the connector (CP1450) to remove the Deck Mechanism. 12.2.5. Disassembly of Main, Standby LED and Sensor P.C.B. Follow (step 1) to (step 9) of item 12.2.1. Follow (step 1) to (step 3) of item 12.2.4. Step 1: Remove 2 screws. Step 2: Release 4 clutches. Step 3: Remove the

43、mecha chassis. 17 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT Step 4: Remove 2 screws. Step 5: Release all the connectors (CP501, CP402 & CP801). Step 6: Release 1 Catch and remove Standby Led P.C.B. Step 7: Release the Sensor P.C.B. as arrow shown. Step 8: Remove the Main P.C.B. as arrow shown. 1

44、2.2.6. Disassembly of Battery and Power P.C.B. Follow (step 1) to (step 9) of item 12.2.1. Follow (step 1) to (step 3) of item 12.2.4. Follow (step 1) to (step 8) of item 12.2.5. Step 1: Remove 1 screw. Step 2: Remove the Battery Support P.C.B. Note: Remember to place the Battery Support P.C.B. to o

45、riginal location. 18 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT Step 3: Remove the Battery P.C.B. as arrow shown. Step 4: Remove 3 screws. Step 5: Remove the transformer together with Battery P.C.B. and Power P.C.B. as arrow shown. 12.2.7. Disassembly of CD Loading Mechanism. Follow (step 1) to (

46、step 9) of item 12.2.1. Follow (step 1) to (step 3) of item 12.2.4. Follow (step 1) to (step 8) of item 12.2.5. Step 1: Remove 4 screws. 19 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT Step 2: Remove the CD loading mechanism as arrow shown. 12.2.8. Replacement of Cassette Panel. Follow (step 1) to

47、(step 9) of item 12.2.1. Step 1: Remove the cassette open spring. Step 2: Push the cassette panel slowly to the right. 20 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT Step 3: Push the cassette panel slowly to the left using a screw driver. Caution: Be careful of using/exerting strong forces. Step 4

48、: Remove the cassette panel from top cabinet as arrow shown. 12.3. Procedures for Replacing Pinch Roller and Head Block (Deck Mechanism Unit) Follow (step 1) to (step 9) of item 12.2.1. Follow (step 1) to (step 3) of item 12.2.4. 12.4. Procedures for Replacing Motor, Capstan Belt A, Capstan Belt B,

49、and Winding Belt (Deck Mechanism Unit) Follow (step 1) to (step 9) of item 12.2.1. Follow (step 1) to (step 3) of item 12.2.4. 21 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT 22 RX-ES23GC / RX-ES23GS / RX-ES23GN / RX-ES23GT 12.5. Procedures for Replacing Parts on Deck Mechanism PCB Follow (step 1) to (step 9) of item 12.2.1. Follow (step 1) to (step 3) of item 12.2.4. 12.6. Procedures of Replacing Traverse Base (Unit), Driving Gear, and