Panasonic-SAAK310G-cs-sm 电路图 维修手册.pdf

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1、Service Manual TOP NEXT ORDER NO. MD0212275C3 CD Stereo System ?SA-AK310GC SA-AK310GN Colour (S). Silver Type TAPE SECTION : SG-2W MECHANISM SERIES Specifications ? AMPLIFIER SECTION Power output 10% Total harmonic distortion 1kHz, both channels driven (Low channel) 55 W per channel (6 ) 10kHz, both

2、 channels driven (High channel) 55 W per channel (6 ) Total Bi-Amp power 110 W per channel Input sensitivity AUX 250 mV Input Impedance AUX 13.3 k ? FM TUNER SECTION Frequency range 87.50 - 108.00 MHz (50 kHz steps) Sensitivity 2.5 V (IHF) S/ N 26 dB 2.2 V Antenna terminal(s) 75 (unbalanced) ? AM TU

3、NER SECTION Frequency range 522 - 1629 kHz (9 kHz steps) 520 - 1630 kHz (10 kHz steps) RadioFans.CN 收音机爱 好者资料库 2002 Matsushita Electronics (S) Pte. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. Sensitivity S/ N 20 dB (at 999 kHz) 560 V/ m ? CASSETTE DECK SECT

4、ION Track system 4 track, 2 channel Heads Record/ playback Solid permalloy head Erasure Double gap ferrite head Motor DC servo motor Recording system AC bias 100 kHz Erasing system AC erase 100 kHz Tape speed 4.8 cm/ s (1 7/ 8 ips) Overall frequency response (+ 3 dB, -6 dB at DECK OUT) NORMAL (TYPE

5、I) 35 Hz - 14 kHz S/ N 50 dB (A weighted) Wow and flutter 0.18% (WRMS) Fast forward and rewind time Approx. 120 seconds with C-60 cassette tape ? CD SECTION Sampling frequency 44.1 kHz Decoding 16 bit linear Beam source/ wave length Semiconductor laser/ 780 nm Number of channels Stereo Frequency res

6、ponse 20 Hz - 20 kHz (+ 1, -2 dB) Wow and flutter Below measurable limit Digital filter 8 fs D/ A converter MASH (1 bit DAC) ? GENERAL Power Supply For GC only AC 110/ 127/ 220-230/ 240 V, 50/ 60Hz For GN only AC 230-240 V, 50Hz Power consumption For GC only 172 W For GN only 170 W Power Consumption

7、 in standby mode For GC only 0.85 W For GN only 0.5 W Dimensions (W x H x D) 250 x 330 x 370 mm Mass For GC only 7.8 kg For GN only 7.0 kg ? SYSTEM SC-AK310 (GC) Music center: SA-AK310 (GC) Speaker: SB-AK310 (GC) SC-AK310 (GN) Music center: SA-AK310 (GN) Speaker: SB-AK310 (GC) Notes: 1.Specification

8、s 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 refer to High frequency and Low frequency. RadioFans.CN 收音机爱 好者资料库 TOP NEXT RadioFans.CN 收音机

9、爱 好者资料库 1 Before Use TOP PREVIOUS NEXT Be sure to disconnect the mains cord before adjusting the voltage selector. Use a minus(-) screwdriver to set the voltage selector (on the rear panel) to the voltage setting for the area in which the unit will be used. (If the power supply in your area is 117V

10、or 120V, set to the “127V” position.) Note that this unit will be seriously damaged if this setting is not made correctly. (There is no voltage selector for some countries, the correct voltage is already set.) TOP PREVIOUS NEXT 2 Before Repair and Adjustment TOP PREVIOUS NEXT Disconnect AC power, di

11、scharge Power Supply Capacitors C520 and C540 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. TOP PREVIOUS

12、NEXT 3 Protection Circuitry TOP PREVIOUS NEXT 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, for example

13、, 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 and correct

14、 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 4 Accessories TOP PREVIOUS NEXT Remote control transmitter FM indoor antenna AC power supply cord

15、(For GC only) AC power supply cord (For GN only) AM Loop antenna Power plug adaptor TOP PREVIOUS NEXT 5 Operation Procedures TOP PREVIOUS NEXT TOP PREVIOUS NEXT 6 Handling Precautions For Traverse Deck TOP PREVIOUS NEXT The laser diode in the traverse deck (optical pickup) may break down due to pote

16、ntial 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 traverse deck (optical pickup) 1. Do not subject the traverse deck (optical pickup) to static electricity as it is extre

17、mely 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.To connect to the PC board, be sure to open by removing the solder build-up, and finishthe workquickly. 3.

18、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 electrostatic breakdown prevention 1. Human body grounding Use the anti-static wrist strap to discharge the static electric

19、ity 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 : The static electricity of your clothes will not be grounded through the wrist strap. So, take care not to let y

20、our 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 electroststics breakdown. Be sure to remove the solder from the short point before making connections. TOP PREVIO

21、US NEXT 7 Operation Checks and Component Replacement Procedures TOP PREVIOUS NEXT “ATTENTION SERVICER” Some chassis components may have sharp edges. Be careful when disassembling and servicing. 1. This section describes procedures for checking the operation of the major printed circuit boards and re

22、placing 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. Warning: This product uses a lase

23、r diode. Refer to caution statement Precaution of Laser Diode. 7.1 Checking for Main P.C.B. 7.2 Disassembly for the CD changer ass y 7.2.1 Disassembly for the CD Lid 7.2.2 Disassembly for CD changer unit 7.3 Checking for the unit operational condition 7.3.1 Initial setting of CD 7.3.2 Checking for t

24、he CD Servo P.C.B., Panel P.C.B., Deck P.C.B., Transformer P.C.B. and Power P.C.B. 7.3.3 Replacement of the Power Amplifier IC 7.4 Main Component Replacement Procedures 7.4.1 Replacement of the Traverse Deck 7.5 Replacement for the disc tray 7.6 Disassembly and reassembly for mechanism base drive un

25、it 7.7 Replacement for the motor ass y 7.8 Replacement for the pinch roller ass y and head block 7.9 Replacement for the Deck motor ass y, capstan belt A, capstan belt B and winding belt 7.10 Replacement for the CD motor ass y, capstan belt A, capstan belt B and winding belt 7.11 Replacement for the

26、 cassette lid ass y 7.12 Measure for tape trouble TOP PREVIOUS NEXT 7.1 Checking for Main P.C.B. TOP PREVIOUS NEXT 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 remove the cabinet assy. ?Checking the

27、Main P.C.B. as shown below. TOP PREVIOUS NEXT 7.2 Disassembly for the CD changer ass y TOP PREVIOUS NEXT (The CD changer unit can be removed after the CD Lid is removed) 7.2.1 Disassembly for the CD Lid 7.2.2 Disassembly for CD changer unit TOP PREVIOUS NEXT 7.2.1 Disassembly for the CD Lid TOP PREV

28、IOUS NEXT ?Follow the (Step 1) - (Step 2) of Item 7.1. 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 open automatically. Step 4 Release

29、 the 2 claws, and then remove the CD Lid. Step 5 Press the POWER 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 unde

30、rside of CD chasis and then rotate in the direction of arrow. The disc tray will be open. Step 3 Release the 2 claws, and then remove the CD lid cover. Step 4 Push the disc tray. TOP PREVIOUS NEXT 7.2.2 Disassembly for CD changer unit TOP PREVIOUS NEXT ?Follow the (Step 1) - (Step 2) of Item 7.1. ?F

31、ollow the Disassembly for the CD Lid of Item 7.2.1. Step 1 Remove 2 screws at rear cabinet as show below. 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. Step 4 Upset the CD changer unit.

32、 Step 5 Place the CD changer unit on the unit. TOP PREVIOUS NEXT 7.3 Checking for the unit operational condition TOP PREVIOUS NEXT (Place the unit horizontally when loading the CD changer unit.) 7.3.1 Initial setting of CD 7.3.2 Checking for the CD Servo P.C.B., Panel P.C.B., Deck P.C.B., Transforme

33、r P.C.B. and Power P.C.B. 7.3.3 Replacement of the Power Amplifier IC TOP PREVIOUS NEXT 7.3.1 Initial setting of CD TOP PREVIOUS NEXT ?Follow the (Step 1) - (Step 2) of Item 7.1. ?Follow the Disassembly for the CD Lid of Item 7.2.1. Step 1 Connect the AC power cord. Step 2 Press POWER button to turn

34、 on power for main unit. Step 3 Select the input select button to “CD”. Step 4 Push 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 disc tray. (Then, the CD will load.) TOP PREVIOUS NEXT 7.3.2 Checking

35、 for the CD Servo P.C.B., Panel P.C.B., Deck P.C.B., Transformer P.C.B. and Power P.C.B. TOP PREVIOUS NEXT ?Follow the (Step 1) - (Step 2) of Item 7.1. ?Follow the Disassembly for the CD Lid of Item 7.2.1. ?The initial setting of CD unit must be completed. (Refer to the initial setting of CD unit in

36、 Item 7.3.1). ?Check for CD Servo P.C.B. ?The initial setting of CD unit must be completed. (Refer to the initial setting of CD unit in item 7.3.1.) 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 R

37、emove the mechanism unit cover. ?Check the CD Servo P.C.B. as 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.

38、Step 5 Lay the unit as shown below. Step 6 Remove 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 belo

39、w ?Follow the (Step 1) - (Step 2) of Item 7.1. ?Follow the (Step 1) - (Step 6) of Disassembly for the CD Lid of Item 7.2.1. ?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 7.3.2. NOTE: Insulate Power P.C.B. with insulation materia

40、l to avoid short circuit. TOP PREVIOUS NEXT 7.3.3 Replacement of the Power Amplifier IC TOP PREVIOUS NEXT ?Checking the Power P.C.B. ?Follow the (Step 1) - (Step 2) of Item 7.1. Step 1 Remove the 2 screws fixed to the Power Amplifier IC. Step 2 Remove 2 screws fixed to the Power Amplifier IC and Tra

41、nsistor Holders. Step 3 Break the joint with a metal cutter as shown below. Step 4 Unsolder the terminals of Power Amp IC, transistor and replace the component. Step 5 Fix back the chasis with a screw as shown. TOP PREVIOUS NEXT 7.4 Main Component Replacement Procedures TOP PREVIOUS NEXT 7.4.1 Repla

42、cement of the Traverse Deck TOP PREVIOUS NEXT 7.4.1 Replacement of the Traverse Deck TOP PREVIOUS NEXT ?Follow the (Step 1) - (Step 2) of Item 7.1. ?Follow the (Step 1) - (Step 6) of Disassembly for the CD Lid of Item 7.2.1. ?Follow the disassembly instruction for the CD changer unit of Item 7.2.2.

43、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 Insert the gear with hexagonal wrench 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

44、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 arrow (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 as

45、sy 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 screws. Step 11 Unsolder the motor terminals (4 points). Step 12 Remove the FFC board from the connector, and then remove the CD Servo P.C.B.

46、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 because those will also be removed on removal of the traverse deck assy. ?Installation of the CD Servo P.C.B. after replacement Step 1 Connect the FFC board. S

47、tep 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 servo 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

48、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). TOP PREVIOUS NEXT 7.5 Replacement for the disc tray TOP PREVIOUS NEXT ?Follow the (Step 1) - (Step 2) of Item 7.1 ?Follow the Disassembly for the CD Lid of Item 7.2.1. ?Follow the Disassembly for the CD Changer Unit of Item 7.2.2. ?Follo