Panasonic-SAAK300E-cs-sm 电路图 维修手册.pdf

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1、Service Manual TOP NEXT ORDER NO. MD0201024C2 CD Stereo System G SA-AK300E SA-AK300EB SA-AK300EG Colour (S). Silver Type TAPE SECTION : SG-2W MECHANISM SERIES CD SECTION : RAE0152Z-3 TRAVERSE DECK SERIES Specifications AMPLIFIER SECTION RMS power output 10% , Total harmonic distortion 1kHz, both cha

2、nnels driven (Low)52 W per channel (6 ) 10kHz, both channels driven (High)48 W per channel (6 ) Total Bi-Amp power100 W per channel (6 ) Input sensitivity AUX250 mV Input Impedance RadioFans.CN 收音机爱 好者资料库 AUX13.3 k FM TUNER SECTION Frequency range87.50 - 108.00 MHz (50 kHz steps) Sensitivity1.8 V (I

3、HF) S/ N 26 dB1.5 V Antenna terminal(s)75 (unbalanced) AM TUNER SECTION Frequency range522 - 1629 kHz (9 kHz steps) Sensitivity S/ N 20 dB (at 999 kHz)560 V/ m CASSETTE DECK SECTION Track system4 track, 2 channel Heads Record/ playbackSolid permalloy head ErasureDouble gap ferrite head MotorDC servo

4、 motor Recording systemAC bias 100 kHz Erasing systemAC erase 100 kHz Tape speed4.8 cm/ s Overall frequency response (+ 3 dB, -6 dB at DECK OUT) NORMAL (TYPE I)35 Hz - 14 kHz S/ N50 dB (A weighted) Wow and flutter0.18% (WRMS) Fast forward and rewind timeApprox. 120 seconds with C-60 cassette tape CD

5、 SECTION Sampling frequency44.1 kHz Decoding16 bit linear Beam source/ wave lengthSemiconductor laser/ 780 nm Number of channelsStereo Frequency response20 Hz - 20 kHz (+ 1, -2 dB) Wow and flutterBelow measurable limit Digital filter8 fs D/ A converterMASH (1 bit DAC) GENERAL Power supply (E,EG)AC 2

6、30, 50 Hz (EB)AC 230-240V, 50 Hz Power consumption165 W Power consumption in standby mode 0.49 W Dimensions (W x H x D)250 x 315 x 345 mm Mass7.3 kg SYSTEM SC-AK300 (E)Music Center: SA-AK300 (E) Speaker: SB-AK300 (E) SC-AK300 (EB)Music Center: SA-AK300 (EB) Speaker: SB-AK300 (E) SC-AK300 (EG)Music C

7、enter: SA-AK300 (EG) Speaker: SB-AK300 (E) RadioFans.CN 收音机爱 好者资料库 Notes: 1. Specifications are subject to change without notice. Mass and dimensions are aproximate. 2. Total harmonic distortion is measured by the digital spectrum analyzer. 3. The labels“ HIGH” and“ LOW” on the rear of the speakers

8、refer to High frequency and Low frequency. 2002 Matsushita Electronics (S) Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. TOP NEXT RadioFans.CN 收音机爱 好者资料库 1 Before Repair and Adjustment TOP PREVIOUS NEXT Disconnect AC power, discharge Power Supply Capacit

9、ors C528, C529, C960 through a 10 , 5W resistor to ground. 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 avoid overcurrent. Current consumption at AC 230 V, 50 H

10、z in NO SIGNAL mode should be 250mA. TOP PREVIOUS NEXT 2 Protection Circuitry TOP PREVIOUS NEXT The protection circuitry may have operated if either of the following conditions are noticed: G No sound is heard when the power is turned on. G Sound stops during a performance. The function of this circ

11、uitry is to prevent circuitry damage if, 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 powe

12、r. 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 unit will not operate unless the power is first turned off and then on again. TOP PREVIOUS NEXT 3 Accessories TOP PREVIOUS NEXT Remote Control

13、 Transmitter FM indoor antenna AC mains lead (E,EG) AC mains lead (EB) AM Loop antenna Antenna Plug Adaptor (EB) TOP PREVIOUS NEXT 4 Handling Precautions For Traverse Deck TOP PREVIOUS NEXT The laser diode in the traverse deck (optical pickup) may break down due to potential difference caused by sta

14、tic electricity of clothes or human body. So, be careful of electrostatic breakdown during repair of the traverse deck (optical pickup). G Handling of traverse deck (optical pickup) 1. Do not subject the traverse deck (optical pickup) to static electricity as it is extremely sensitive to electrical

15、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.To connect to the PC board, be sure to open by removing the solder build-up, and finishthe work quickly. 3. Take care not to apply exces

16、sive stress to the flexible board (FFC). 4. Do not turn the variable resistor (laser power adjustment). It has already been adjusted. G Grounding for electrostatic breakdown prevention 1. Human body grounding Use the anti-static wrist strap to discharge the static electricity from your body. 2. Work

17、 table grounding 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. So, take care not to let your clothes touch the trave

18、rse deck (optical pickup). Caution when Replacing the Traverse Deck : The traverse deck 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 before making connections. TOP PREVIOUS NEXT 5 Precaution of La

19、ser Diode TOP PREVIOUS NEXT Caution : This product utilizes a laser diode with the unit turned ON, invisible laser radiation is emitted from the pick up lens. Wavelength : 780 nm Maximum output radiation power from pick up : 100 W/VDE Laser radiation frompick up unit is safety level, but be sure the

20、 followings: 1. Do not disassemble the optical pick up unit, since radiation from exposed laser diode is dangerous. 2. Do not adjust the variable resistor on the pick up unit. It was already adjusted. 3. Do not look at the focus lens using optical instruments. 4. Recommend not to look at pick up len

21、s for a long time. ACHTUNG : Dieses Produkt enthlt eine Laserdiode. Im eingeschalteten Zustand wird unsichtbare Laserstrahlung von der Lasereinheit abgestrahlt. Wellenlnge : 780nm Maximale Strahlungsleistung der Lasereinheit :100 W/VDE DieStrahlung an der Lasereinheit ist ungefhrlich, wenn folgende

22、Punkte beachtet werden: 1. Die Lasereinheit nicht zerlegen, da die Strahlung an der freigelegten Laserdiode gefhrlich ist. 2. Den werkseitig justierten Einstellregler der Lasereinhit nicht verstellen. 3. Nicht mit optischen Instrumenten in die Fokussierlinse blicken. 4. Nicht ber lngere Zeit in die

23、Fokussierlinse blicken. ADVARSEL: I dette a apparat anvendes laser. 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. Use of Caution Labels TOP PREVIOUS NEXT 6 Caution for

24、AC Mains Lead TOP PREVIOUS NEXT TOP PREVIOUS NEXT 7 Operation Procedures TOP PREVIOUS NEXT TOP PREVIOUS NEXT 8 Disassembly and Main Component Replacement Procedures TOP PREVIOUS NEXT “ATTENTION SERVICER” Some chassis components may have sharp edges. Be careful when disassembling and servicing. 1. Th

25、is section describes procedures for checking the operation of the major 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 item

26、s from the following index when checks or replacement are required. Contents G Disassembly Procedure for each major P.C.B. 1. Checking of the Main, Panel, Transformer, Deck P.C.B. 2. Checking of Power P.C.B. G Main Component Replacement Procedures 1. Replacement of the Traverse Deck. 2. Replacement

27、of the Power Amplifier IC. G Disassembly and assembly of the Traverse Unit G Disassembly and assembly of the Disc Tray Warning: This product uses a laser diode. Refer to caution statement “Precaution of Laser Diode. 8.1 Disassembly Procedure for each major P.C.B. 8.1.1 Checking of the Main, Panel, D

28、eck and Power P.C.B. 8.2 Main Component Replacement Procedures 8.2.1 Replacement of the Traverse Deck 8.2.2 Replacement of the Power Amplifier IC 8.3 Disassembly and assembly of the Traverse Unit 8.4 Disassembly and assembly of the Disc Tray TOP PREVIOUS NEXT 8.1 Disassembly Procedure for each major

29、 P.C. B. TOP PREVIOUS NEXT 8.1.1 Checking of the Main, Panel, Deck and Power P.C.B. TOP PREVIOUS NEXT 8.1.1 Checking of the Main, Panel, Deck and Power P.C.B. TOP PREVIOUS NEXT Step 1 Remove the Top Cabinet. Step 2 Push the lever in the direction of the arrow. Step 4 Pull out the CD tray as shown an

30、d remove the CD lid. Push back the CD tray after the CD lid has been removed. Step 5 Release the 2 cathches, disconnect CN309 and CN310 and remove the CD changer base together with the CD changer. Step 6 Remove 10 screws. G Checking for Main, Panel , Transformer and Deck P.C.B G Checking for Power P

31、.C.B. TOP PREVIOUS NEXT 8.2 Main Component Replacement Procedures TOP PREVIOUS NEXT 8.2.1 Replacement of the Traverse Deck 8.2.2 Replacement of the Power Amplifier IC TOP PREVIOUS NEXT 8.2.1 Replacement of the Traverse Deck TOP PREVIOUS NEXT Step 1 Follow the procedures in Disassembly of the Travers

32、e Unit ( Step 1 - Step 4 ). Step 3 Desolder the 4 legs of the 2 motors and pull out the Servo P.C.B. Step 4 Widen the 3 bosses with a flat screwdriver and pull out the 3 pins. Then remove the Traverse Deck. Step 5 Remove the flexible cable CN701. G Removal of the flexible cable. Push the top of the

33、connector in the direction of the arrow 1, and then pull out the flexible cable in the direction of the arrow 2. Note: Insert a short pin into the flexible cable for traverse unit. G Installation of the CD servo P.C.B. after replacement Step 1 Connect the FFC board. Step 2 Install the CD servo P.C.B

34、. in the traverse deck assembly. Note: Before installing the CD servo P.C.B., move the optical pickup towards the outer edge from the marking (black triangle). Otherwise, the reset detect switch (S701) mounted on the CD servo P.C.B. may be damaged. TOP PREVIOUS NEXT 8.2.2 Replacement of the Power Am

35、plifier IC TOP PREVIOUS NEXT Step 1 Follow the procedures in Checking Procedure for each major P.C.B. ( Step 1 - Step 4 ). Step 2 Remove the wires at CN302, CN303 and CN304 and pull out the Main PCB. Step 3 Remove the 2 screws fixed to the Power Amplifier IC. Step 4 Unsolder the terminals of Power A

36、mp IC and replace the respective component. TOP PREVIOUS NEXT 8.3 Disassembly and assembly of the Traverse Unit TOP PREVIOUS NEXT Step 1 Push the lever from position A to B. Step 2 Pull the stopper (black) in the direction of arrow 1 and push the lever in the direction of arrow 2. Step 3 Push the st

37、opper (black) down until the white lever eject out. Step 4 Lift up the traverse unit and slide out the unit as shown. G Replacement of Traverse Unit Step 1 Place the traverse unit as shown. Step 2 Press in the lever shaft in the direction of arrow 1 as shown and push the traverse unit into the posit

38、ion in the direction of arrow 2. Step 3 Pull the stopper in the direction of arrow 1 and release the lever in the direction of arrow 2 as shown. Step 4 Pull out the tray half way and push it back fully. Step 5 Push the lever to the initial position indicated |-|. TOP PREVIOUS NEXT 8.4 Disassembly an

39、d assembly of the Disc Tray TOP PREVIOUS NEXT Step 2 With lifting the claw in the direction of arrow 1, draw the clamp SW P.C.B. in the direction of arrow 2. Step 3 Remove the mechanism cover. Step 4 Insert the gear with hexagonal wrench into the hole. Step 5 Rotate the hexagonal wrench in the direc

40、tion of arrow (clockwise), and then open the disc tray fully. Step 6 Upset the CD changer unit again. Step 7 Release both the claws, and then draw the disc tray. Step 8 With forcing the left guide bar manually because the left guide bar interferes with claw, draw the disc tray. G Installation of the

41、 disc tray after replacement Step 1 Slide the drive rack fully in the direction of the arrow. Step 2 Holding the drive rack, not to move, install the disc tray. Step 3 Align the drive rack with the drive gear. Step 4 Holding the disc tray manually, rotate the pulley gear in the direction of arrow. S

42、tep 5 Rotate the gear 5 or 6 times manually, and then push the disc tray. TOP PREVIOUS NEXT 9 Self-Diagnostic Function TOP PREVIOUS NEXT 9.1 Self-diagnostic display 9.2 How to enter the Self-Diagnostic Function 9.3 Cassette Mechanism Test (For error code H01, H02, H03, F01, F02) 9.4 CD Mechanism Tes

43、t (F15, F26, F16, F17, F27, F28, F29, H15) 9.5 To clear all Error code 9.6 How to get out from Self-Diagnostic function 9.7 Power Amplifier Failure (F61) TOP PREVIOUS NEXT 9.1 Self-diagnostic display TOP PREVIOUS NEXT This unit is equipped with a self-diagnostic display function which, if a problem

44、occurs, will display an error code corresponding to the problem. Use this function when performing maintenance on the unit. TOP PREVIOUS NEXT 9.2 How to enter the Self-Diagnostic Function TOP PREVIOUS NEXT TOP PREVIOUS NEXT 9.3 Cassette Mechanism Test (For error code H01, H02, H03, F01, F02) TOP PRE

45、VIOUS NEXT 1. Press “TAPE, DECK 1/2” to select Deck 2. 2. Load a cassette tape with the erasure prevention tab, remove from left side only and close the cassette holder. 3. Press “FAST FORWARD MEMORY” (Tape will be stop after 2 seconds) 4. Load a cassette tape with the erasure prevention tab, remove

46、 from right side only and close the cassette holder. 5. Press “REVERSE FM MODE/BP” (Tape will be stop after 2 seconds) 6. Load a pre-recorded tape with both side record tabs intact and close the cassette holder. 7. Press “PLAY/TUNE/TIME ADJ UP” (After TPS function, tape will stop automatically) 8. P

47、ress “REC/STOP” (Tape will not move) 9. Press “STOP/TUNE MODE” to indicate Error code. H If several problem exist, error code will change each time when “ /TUNE MODE” is pressed. (e.g. H01 H03 F01 .etc.) 10. Press “TAPE, DECK 1/2” to select Deck 1. 11. Repeat step 2 to 9 to test Deck 1. (Tape Deck 1

48、 will not check H02 because of no recording function) TOP PREVIOUS NEXT 9.4 CD Mechanism Test (F15, F26, F16, F17, F27, F28, F29, H15) TOP PREVIOUS NEXT 1. Press “CD”. 2. Press “OPEN/CLOSE (1)” and place a CD. 3. Press “OPEN/CLOSE (1)” to close the tray. 4. Press “OPEN/CLOSE (5)” and wait until the

49、tray is open. 5. Press “OPEN/CLOSE (1)” and remove the CD. 6. Press “OPEN/CLOSE (1)” to close the tray. 7. Press “ /TUNE MODE” to indicate Error Code. H If several problem exist, error code will change each time when “ /TUNE MODE” is pressed. (e.g. F15 F26 F16 .etc). TOP PREVIOUS NEXT 9.5 To clear all Error code TOP PREVIOUS NEXT 1. Press “STOP/TUNE MODE” button for 5 seconds. 2. FL indicator s