Panasonic-SADK10-cs-sm 电路图 维修手册.pdf

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1、I I AMPLIFIER SECTION Stereo mode power output THD 10% Total harmonic distortion LF 75 Hz65 W per channel (8 ) HF 1 kHz30 W per channel (6 ) Total stereo mode power LF 55Hz - 100 Hz65 W per channel (8 ) HF 100Hz - 15 kHz28 W per channel (6 ) Power output in Home Theater mode THD 10%, both channels d

2、riven Front LF 75 Hz65 W per channel (8 ) HF 1 kHz30 W per channel (6 ) Center 1 kHz40 W (8 ) Surround 1 kHz35 W per channel (8 ) Total power output300 W Input sensitivity AUX250 mV Input Impedance AUX10 k I I FM TUNER SECTION Frequency range87.9 - 107.9 MHz (200 kHz steps) 87.5 - 108.0 MHz (100 kHz

3、 steps) Sensitivity1.8 V (IHF) S/N 26 dB1.5 V 2001 Matsushita Electronics (S) Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. SA-DK10 Colour (S). Silver Type Area (P). U.S.A. (PC). Canada TAPE SECTION : AR2 MECHANISM SERIES CD SECTION : RAE0152Z-3 TRAVERSE

4、 DECK SERIES Antenna terminal(s)75 (unbalanced) I I AM TUNER SECTION Frequency range520 - 1710 kHz (10 kHz steps) Sensitivity S/N 20 dB (at 1000 kHz)500 V/m I I CASSETTE DECK SECTION Track system4 track, 2 channel Heads Record/playbackSolid permalloy head ErasureDouble gap ferrite head MotorDC servo

5、 motor Recording systemAC bias 100 kHz Erasing systemAC erase 100 kHz Tape speed4.8 cm/s (1 7/8 ips) Frequency response (+3 dB, -6 dB at DECK OUT) NORMAL (TYPE I)35 Hz - 14 kHz HIGH (TYPE II)35 Hz - 14 kHz S/N50 dB (A weighted) Wow and flutter0.18 % (WRMS) Fast forward and rewind timeApprox. 120 sec

6、onds with C-60 cassette tape I I Disc SECTION Disc DVD-Video DVD Stereo System Specifications ORDER NO. MD0105087C1 A6 RadioFans.CN 收音机爱 好者资料库 8 cm/12 cm single sided, single layer 8 cm/12 cm single sided, double layer 8 cm/12 cm double sided, double layer (One layer per side) Video CD/CD8 cm/12 cm

7、Video Signal systemNTSC Output level Composite video1 Vp-p (75 ) S-Video Y1 Vp-p (75 ) S-Video C0.286 Vp-p (75 /NTSC) Audio Sampling frequency CD44.1 kHz DVD48kHz/96 kHz Decoding16/20/24 bit linear Wow and flutterBelow measurable limit D/A converterDelta-sigma DAC) Pick up Beam sourceSemiconductor L

8、aser Wavelength DVD658 nm VCD/CD790 nm 1 Safety Precaution 3 2 Before Repair and Adjustment 3 3 Protection Circuitry 3 4 Accessories 4 5 Handling Precautions For Traverse Deck 5 6 Precaution of Laser Diode 6 7 Operation Procedures 7 8 Disassembly and Main Component Replacement Procedures 9 I I GENER

9、AL Power supplyAC 120 V, 60Hz Power consumption161 W Power consumption in standby mode 161 W Dimensions (W x H x D)215.4 X 315 X 350 mm 8 1/2” x 12 13/32” x 13 25/32” Mass(7.8 kg) 17.2 lb I I SYSTEM SC-DK10(P)Music Center: SA-DK10(P) Front Speaker: SB-DK10(P) Surround Speaker: SB-PS90(P) Center Spea

10、ker: SB-PC93(P) SC-DK10(PC)Music Center: SA-DK10(PC) Front Speaker: SB-DK10(P) Surround Speaker: SB-PS90(P) Center Speaker: SB-PC93(P) Notes: 1. Specifications are subject to change without notice. Mass and dimensions are aproximate. 2. Total harmonic distortion is measured by the digital spectrum a

11、nalyzer. 9 Measurements and Adjustments 22 10 Illustration of ICs, Transistors and Diodes 24 11 Terminal Function of ICs 25 12 Block Diagram 26 13 Schematic Diagram 35 14 Printed Circuit Board 68 15 Wiring Connection Diagram 81 16 Parts Location and Replacement Parts List 83 CONTENTS Page Page 2 SA-

12、DK10 RadioFans.CN 收音机爱 好者资料库 (This “Safety Precaution” is applied only in U.S.A.) 1 Safety Precaution 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.

13、Replace if wear or damage is evident. 4. After servicing, be sure to restore the 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 e

14、xposed to a shock hazard. 1.1. Insulation Resistance Test 1. Unplug the power cord and short the two prongs of the plug with a jumper wire. 2. Turn on the power switch. 3. Measure the resistance value with ohmmeter between the jumper AC plug and each exposed metal cabinet part, such as screwheads, a

15、ntenna, control shafts, handle brackets, etc. Equipment with antenna terminals should read between 3 M and 5.2 M to all exposed parts*.(Fig.1) Equipment without antenna terminals should read approximately infinity to all exposed parts.(Fig.2) *Note: Some exposed parts may be isolated from the chassi

16、s by design. These will read infinity. 4. If the measurement is outside the specified limits, there is a possibility of a shock hazard. The equipment should be repaired and rechecked before it is returned to the customer. 2 Before Repair and Adjustment Disconnect AC power, discharge Power Supply Cap

17、acitors C566C569, C782 and C591 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 1

18、20V, 60 Hz in NO SIGNAL mode should be 650mA. 3 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. Sound stops during a performance. The function of this circuitry is to prevent circuitry d

19、amage 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 power. 2. Determine the cause of th

20、e 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. 3 SA-DK10 RadioFans.CN 收音机爱 好者资料库 4 Accessories Remote Control Transmitter FM indoor antenna A

21、C mains lead AM Loop antenna Video cable 4 SA-DK10 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). 5.

22、1. Handling the Traverse Deck (Optical pickup) 1. Thetraversedeck(opticalpickup)isanextremely highprecsion construction and must not be subjected to impact,excessivevibration,orothertypesofrough handling. 2. In order to prevent static electricity damage to the laser diode, use a short pin or similar

23、 tool to short the optical pickupsflexiblecircuitboardsaftertheyhavebeen disconnected from the main circuit board. 3. Handle the flexible circuit boards with care; excessive force could cause them to be broken. 4. Do not turn the pre-set variable resistor (for adjustment of the laser power); it has

24、been adjusted at the factory. (as shown in Fig. 1) 5.2. 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 table grounding Put a conductive material (sheet) or steel sheet on the area wh

25、ere the optical pickup is placed, and ground the sheet. (sa shown in Fig. 2) 3. 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 traverse deck (optical pickup). 5.3. Caution when Replacing the Traverse Deck

26、 The traverse deck has a short point shorted with solder protect the laer diode against electrostatics breakdown. Be sure to removethesolderfromtheshortpointbeforemaking connections. 5 Handling Precautions For Traverse Deck 5 SA-DK10 This product utilizes a laser diode with th unit turned “ON”, invi

27、sible laser radiation is emitted from the pick up lens. 1. Do not disassembly the pick up unit, since radioation from exposed laser diode is dangerous. 2. Do not adjust the variable resistor on the pickup unit. It was already adjusted. 3. Do not lock at the focus lens using optical instrument. 4. Re

28、commend not to lock up lens for long time. 6 Precaution of Laser Diode CAUTION: 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 SA-DK10 7 Operation Procedures 7 SA-DK10

29、 8 SA-DK10 Some chassis components may have sharp edges. Be careful when disassembling and servicing. Main Component Replacement Procedures 8 Disassembly and Main Component Replacement Procedures “ATTENTION SERVICER” 1. This section describes procedures for checking the operation of the major printe

30、d 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. Contents C

31、hecking Procedure For Each Major P.C.B. 1. Checking of the Main, Panel, Deck and Power P.C.B. 2. Checking for the DVD F/E Module P.C.B. 3. Disassembly for the DVD Changer Unit. 1. Replacement of the Traverse Deck. 2. Replacement of the Power Amplifier IC. Disassembly and assembly of the Traverse Uni

32、t Disassembly and assembly of the Disc Tray Warning: This product uses a laser diode. Refer to caution statement Precaution of Laser Diode. 9 SA-DK10 Step 1 Remove the top cabinet. Step 2 Push lever in the direction of arrow. Step 3 Pull out the CD tray as shown. Release the 2 claws and remove the C

33、D lid. Push back the CD tray after the CD lid has been removed. 8.1. Disassembly Procedure for each major P.C.B. Checking 8.1.1. Checking of the DVD Servo, Main, Transformer, Panel and Deck P.C.B. 10 SA-DK10 Step 4 Remove 12 screws and catches both side. Step 5 Remove the wires at FP2001, FP3202, FP

34、3203, and FP4202. Step 6 Release the wire from catch, remove the CD changer base together with the CD changer. Checking for Panel P.C.B., Main P.C.B. and Deck P.C.B. 11 SA-DK10 Replacement of the Power Amplifier IC and Regulator Transistor. Step 1 Follow the procedures in “Checking procedure for eac

35、h major P.C.B. Step 2 Remove the wires at CN302, CN303 and H603A/W603 and pull out the Main P.C.B. Step 3 Remove 4 screws fixed to the Power Amplifier IC and Transistor Holders. Step 4 Unsolder the terminals of Power Amp IC and replace the component. Checking for Power P.C.B. 12 SA-DK10 Step 1 Remov

36、e 3 screws each both side and 5 screws at rear panel. Step 2 Lift up the both sides cabinet assy to release the hook (A). Then pull the cabinet assy toward the rear and release the hook (B) to remove the cabinet assy. NOTE: When installing the cabinet assy, take care not to damage the front cabinet

37、assy from hook (B). Check the Main P.C.B. and DVD F/E Module (1/2) P.C.B. Step 3 Remove 4 screws. Step 4 Remove 4 connectors. Step 5 Pull out 4 FFCs. Step 6 Raise the DVD Module P.C.B. Checking the DVD F/E Module (2/2) P.C.B. as shown below. Step 7 Disconnect the FFCs to the connector. Step 8 Lift u

38、p DVD F/E Module (2/2) P.C.B. as shown. 8.2. Checking for the Main and DVD F/E Module (1/2) P.C.B. 13 SA-DK10 8.3.1. Disassembly for the disc tray ornament Follow the (Step 1) - (Step 3) of item 8.1 When opening the disc tray automatically Step 1 Connect the power. Step 2 Push the button and the pow

39、er turns ON. Step 3 Push the open/close button, so the disc tray will be open automatically. (If the other buttons would be push, disc tray would be open.) Step 4 Disconnect the power. Step 5 Release the 2 claws, and then remove the disc tray ornament. Step 6 Connect the power again. Step 7 Push the

40、 button and the power turns ON. 8.3. Disassembly for DVD/CD changer unit 14 SA-DK10 Step 8 Push the open/close button1, so the disc tray will be close. When opening the disc tray manually Step 1 Off the unit. Step 2 Insert the gear for servicing into the bottom hole of mechanism unit cover, and then

41、 rotate the hexagonal wrench clockwise so the disc tray will be open. Step 3 Release 2 claws, and then remove the disc tray ornament. Step 4 Push the disc tray. 15 SA-DK10 8.3.2. Disassembly for the DVD/CD changer unit. Follow the (Step 1) - (Step 3) of item 8.1 Followthedisassemblyinstructionforthe

42、disctray ornament . Step 1 Remove 4 screws. Step 2 Pull out 4 FFCs. Step 3 Remove 4 connectors. Step 4 Remove 2 screws at rear panel. Step 5 Release the claws of both ends, and then lift up the DVD changer unit. Step 6 Remove the DVD/CD changer and place the DVD/CD changer unit on the unit. The prep

43、aration of checking procedures in operational condition is completed. 16 SA-DK10 1. Replacement of the Traverse Deck Step 1 Follow the procedures in Disassembly of the Traverse 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

44、 with a flat screwdriver and pull out the 3 pins. Then remove the Traverse Deck. Step 5 Remove the flexible cable CN 701. Removal of the flexible cable. Push the top of the 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

45、 short pin into the flexible cable for traverse unit. 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. in the traverse deck assembly. Note: Before installing the CD servo P.C.B., move the optical pickup towards the outer edge from

46、 the marking (black triangle). Otherwise, the reset detect switch (S701) mounted on the CD servo P.C.B. may be damaged. 2. Replacement of the Power Amplifier IC Step 1 Follow the procedures in Checking Procedure for each major P.C.B. ( Step 1 - Step 4 ). 8.4. Main Component Replacement Procedures 17

47、 SA-DK10 Step 2 Remove the wires at CN302, CN303 and CN304 and pull out the Main P.C.B. Step 3 Remove 4 screws fixed to the Power Amplifier IC. Step 4 Unsolder the terminals of Power Amp IC and replace the respective component. 18 SA-DK10 Step 1 Push the lever from position A to B. Step 2 Pull the s

48、topper (black) in the direction of arrow 1 and push the lever in the direction of arrow 2. Step 3 Push the stpeer (black) down until the white lever eject out. Step 4 Lift up the traverse unit and slide out the unit as shown. Replacement of Traverse Unit Step 1 Place the traverse unit as shown. Step

49、 2 Press in the lever shaft in the direction of arrow 1 as shown and push the traverse unit into the position 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 I-I. 8.5. Disassembly and assembly of the Traverse Unit 19 SA-DK10 Step 2 With lifting the claw in t