Panasonic-SAAK110P-cs-sm 电路图 维修手册.pdf

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1、I I AMPLIFIER SECTION Power output 10% Total harmonic distortion 60Hz-16kHz, both channels driven 60 W per channel (6 ) Power output 10% Total harmonic distortion 1kHz, both channels driven80W per channel (6) Input sensitivity AUX250 mV Input impedance AUX13.3k I I FM TUNER SECTION Frequency range 8

2、7.9 - 107.9 MHz (200 kHz steps) 87.5 - 108.0 MHz (100 kHz steps) Sensitivity2.5V (IHF) S/N 26 dB2.2 V 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)560 V/m I I CASSETTE DECK SECTION Track system4 track, 2 chann

3、el Heads 2002 Matsushita Electronics (S) Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. SA-AK110P Colour (K). Black Type TAPE SECTION : SG-2W MECHANISM SERIES Record/playbackSolid permalloy head ErasureDouble gap ferrite head MotorDC servo motor Recording

4、 systemAC bias 100 kHz Erasing systemAC erase 100 kHz Tape speed4.8 cm/s (1 7/8 ips) 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 I I CD S

5、ECTION 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) I I GENERAL Power supplyAC 120 V, 60H

6、z Power consumption165 W PowerConsumptioninstandby mode 0.34 W CD Stereo System Specifications ORDER NO. MD0211231C1 A6 RadioFans.CN 收音机爱 好者资料库 Dimensions (W x H x D)250 x 330 x 370 mm (9 27/32” x 13” x 14 3/8 “) Mass7.0 kg (15.4 lb.) I I SYSTEM SC-AK110 (P)Music center: SA-AK110 (P) Speaker: SB-AK1

7、10 (P) 1 Safety Precaution 3 2 Before Repair and Adjustment 3 3 Protection Circuitry 4 4 Accessories 4 5 Handling Precautions For Traverse Deck 5 6 Precaution of Laser Diode 6 7 Operation Procedures 7 8 Operation Checks and Component Replacement Procedures 8 9 Self-Diagnostic Function 35 10 Descript

8、ion of Error Code 36 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. 11 CD Test Mode Function 37 12 Measurements and Adjustments 38 13 Illustration of ICs, Transistors and Di

9、odes 40 14 Terminal Function of ICs 41 15 Block Diagram 44 16 Schematic Diagram 51 17 Printed Circuit Board 65 18 Wiring Connection Diagram 75 19 Troubleshooting Guide 76 20 Parts Location and Replacement Parts List 77 CONTENTS Page Page 2 SA-AK110P / RadioFans.CN 收音机爱 好者资料库 (This “Safety Precaution

10、” is applied only in U.S.A.) 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, antenna, control shafts, handl

11、e brackets, etc. Equipment with antenna terminals should read between 2.7M and 3.9M to all exposed parts*. (Fig.1) Equipmentwithoutantennaterminalsshouldread approximately infinity to all exposed parts. (Fig.2) *Note : Some exposed parts may be isolated from the chassis by design. These will read in

12、finity. 4. If the measurement is outside the specified limits, there is a possibility of a shock hazard. The equipment should be repairedandrecheckedbeforeit isreturnedtothe customer. Fig.1 Fig.2 1 Safety Precaution 1. Before servicing, unplug the power cord to prevent an electric shock. 2. When rep

13、lacing parts, use only manufacturers recommended components for safety. 3. Check the condition of the power cord. 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 equipm

14、ent to the customer, be sure to make the following insulation resistance test to prevent the customer from being exposed to a shock hazard. 1.1. Insulation Resistance Test 2 Before Repair and Adjustment Disconnect AC power, discharge Power Supply Capacitors C520 and C540 through a 10, 5W resistor to

15、 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 120V, 60 Hz in NO SIGNAL mode should be 600mA. 3 SA-AK110P /

16、RadioFans.CN 收音机爱 好者资料库 4 Accessories 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 damage if

17、, 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 proble

18、m 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. Remote Control Transmitter FM indoor antenna AC power supply cord AM Loop antenna 4 SA-AK110P / 5 Hand

19、ling Precautions For Traverse Deck 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). Handling of traver

20、se deck (optical pickup) 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

21、 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 excessive stress to the flexible board (FFC). 4. Do not turn the variable resistor (laser power adjustment). It has already been adjusted. Grounding for electrost

22、atic 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 where the traverse deck (optical pickup) is placed, and ground the sheet. Caution

23、 : 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). Caution when Replacing the Traverse Deck : The traverse deck has a short point shorted with solder to protect the laer diode against

24、 electroststics breakdown. Be sure to remove the solder from the short point before making connections. 5 SA-AK110P / This unit utilizes a class 1 laser. Invisible laser radiation is emitted from the optical pickup lens. When the unit is turned on: I Use of caution label 6 Precaution of Laser Diode

25、CAUTION: 1. Do not look directly into the pick up lens. 2. Do not use optical instruments 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 specif

26、ied replacement pick up only. 6. Use of control or adjustments or performance of procedures 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 HER

27、EIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. 6 SA-AK110P / 7 Operation Procedures 7 SA-AK110P / Some chassis components may have sharp edges. Be careful when disassembling and servicing. 8 Operation Checks and Component Replacement Procedures “ATTENTION SERVICER” 1. This section describes procedu

28、res 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 items from the following index w

29、hen checks or replacement are required. Warning: This product uses a laser diode. Refer to caution statement Precaution of Laser Diode. 8 SA-AK110P / Step 1 Remove 3 screws each side and 5 screws at rear panel. Step 2 Lift up both sides of cabinet assy, push the cabinet assy toward the rear and remo

30、ve the cabinet assy. (The CD changer unit can be removed after the CD Lid is removed) When opening the disc tray automatically (Using Power Supply) Step 1 Connect the AC power cord. Step 2 Press the POWER button to power up the main unit. Step 3 Press the OPEN/CLOSE button, the disc tray will be ope

31、n automatically. Checking the Main P.C.B. as shown below. 8.2.1. Disassembly for the CD Lid Step 4 Release the 2 claws, and then remove the CD Lid. 8.1. Checking for Main P.C.B. 8.2. Disassembly for the CD changer assy Follow the (Step 1) - (Step 2) of Item 8.1. 9 SA-AK110P / Step 5 Press the POWER

32、button to turn the power on. Step 6 Press the OPEN/CLOSE button, the disc tray will be close. Open the disc tray manually (Using service tools) Step 1 Upset the unit as shown below. Step 2 Insert the gear tool into the hole on the underside of CD chasis and then rotate in the direction of arrow. The

33、 disc tray will be open. Step 3 Release the 2 claws, and then remove the CD lid cover. Step 4 Push the disc tray. 8.2.2. Disassembly for CD changer unit Follow the (Step 1) - (Step 2) of Item 8.1. Follow the Disassembly for the CD Lid of Item 8.2.1. Step 1 Remove 2 screws at rear cabinet as show bel

34、ow. Step 2 Lift up the mechanism unit cover, and then push in the mechanism unit cover. Step 3 Release the claws of both ends, and then lift up the CD changer unit. 10 SA-AK110P / Step 4 Upset the CD changer unit. Step 5 Place the CD changer unit on the unit. (Place the unit horizontally when loadin

35、g the CD changer unit.) 8.3.1. Initial setting of CD Follow the (Step 1) - (Step 2) of Item 8.1. Follow the Disassembly for the CD Lid of Item 8.2.1. Step 1 Connect the AC power cord. Step 2 Press POWER button to turn on power for main unit. Step 3 Select the input select button to “CD”. Step 4 Push

36、 the OPEN/CLOSE button, and then open the disc tray. Step 5 Put the CD into the disc tray. Step 6 Press the OPEN/CLOSE button 1, and then close the 8.3. Checking for the unit operational condition 11 SA-AK110P / disc tray. (Then, the CD will load.) 8.3.2. Checking for the CD Servo P.C.B., Panel P.C.

37、B., Deck P.C.B., Transformer P.C.B. and Power P.C.B. Follow the (Step 1) - (Step 2) of Item 8.1. Follow the Disassembly for the CD Lid of Item 8.2.1. The initial setting of CD unit must be completed. (Refer to the initial setting of CD unit in Item 8.3.1). Check for CD Servo P.C.B. The initial setti

38、ng of CD unit must be completed. (Refer to the initial setting of CD unit in item 8.3.1.) Step 1 Push the power button and the power turns OFF. Step 2 Remove the FFC boards. Step 3 Remove the CD changer unit. Step 4 Remove 4 screws. Step 5 Remove the mechanism unit cover. Check the CD Servo P.C.B. a

39、s shown below Step 6 Lay the unit. Step 7 Connect the FFC board (19 pin) from CD servo P.C.B. Step 1 Press the POWER button and the power turns off. Step 2 Remove the connectors. Step 3 Pull out the FFCs. Step 4 Remove the CD changer unit. Step 5 Lay the unit as shown below. 12 SA-AK110P / Step 6 Re

40、move 2 screws. Step 7 Release the 2 claws, and then draw the front panel assy. Check the Panel P.C.B., Deck P.C.B. and Transformer P.C.B. as shown below Step 8 Release the 6 screws, and then remove the rear cover. Checking the Power P.C.B. as shown below Follow the (Step 1) - (Step 2) of Item 8.1. F

41、ollow the (Step 1) - (Step 6) of Disassembly for the CD Lid of Item 8.2.1. Follow the (Step 1) - (Step 8) of Checking for Panel P.C.B.,Deck P.C.B., Transformer P.C.B. and Power P.C.B. of Item 8.3.2. NOTE: Insulate Power P.C.B. with insulation material to avoid short circuit. 13 SA-AK110P / 8.3.3. Re

42、placement of the Power Amplifier IC Checking the Power P.C.B. Follow the (Step 1) - (Step 2) of Item 8.1. Step 1 Remove the 2 screws fixed to the Power Amplifier IC. Step 2 Remove 2 screws fixed to the Power Amplifier IC and Transistor Holders. Step 3 Break the joint with a metal cutter as shown bel

43、ow. 8.4.1. Replacement of the Traverse Deck Follow the (Step 1) - (Step 2) of Item 8.1. Follow the (Step 1) - (Step 6) of Disassembly for the CD Lid of Item 8.2.1. Follow the disassembly instruction for the CD changer unit of Item 8.2.2. Step 1 Push the power button and the power turns OFF. Step 4 U

44、nsolder the terminals of Power Amp IC, transistor and replace the component. Step 5 Fix back the bottom chasis with a screw as shown. Step 2 Remove the FFC boards. Step 3 Remove the CD changer unit. 8.4. Main Component Replacement Procedures 14 SA-AK110P / Step 4 Insert the gear with hexagonal wrenc

45、h into the hole. Step 5 Rotate the hexagonal wrench in the direction of arrow (clockwise), and then open the disc tray fully. Step 6 With pressing the claw (A), rotate the hexagonal wrench clockwise. (The slide plate R moves for a little amount.) Step 7 Pressing the claw (B) in the direction of arro

46、w (1), the connection lever moves in the direction of arrow (2). Step 8 Lift up the traverse deck assy. Step 9 Remove the traverse deck assy from the timing lever. Caution: When removing or inserting the traverse deck avoid touching the OPU lens and pressing onto the turntable. Step 10 Remove 3 scre

47、ws. Step 11 Unsolder the motor terminals (4 points). 15 SA-AK110P / Step 12 Remove the FFC board from the connector, and then remove the CD Servo P.C.B. Step 13 Remove the pin. Step 14 Release the claw, and then remove the traverse deck assy. Note: Be careful not to lose the 3 floating spring becaus

48、e those will also be removed on removal of the traverse deck assy. 16 SA-AK110P / 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 assy. Step 3 Remove 3 screws. Step 4 Solder. Note for installation of the CD s

49、ervo P.C.B. Installation for traverse deck assy Step 1 Install the traverse deck assy to the timing lever. Step 2 Align the boss of traverse deck assy with the slot of traverse cam gear. Step 3 Force the claw of timing lever. Step 4 Force the disc tray fully. Step 5 With pressing the claw (B) in the direction of arrow (1), force the connection lever in the direction of arrow (2). 17 SA-AK110P / Follow the (Step 1) - (Step 2) of Item 8