Panasonic-SAST1-cs-sm 电路图 维修手册.pdf

《Panasonic-SAST1-cs-sm 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Panasonic-SAST1-cs-sm 电路图 维修手册.pdf（224页珍藏版）》请在收音机爱好者资料库上搜索。

1、Table Of Contents COVER 1 Before Repairs 2 Protection Circuitry 3 Disc information 4 Safety Precaution 4.1 Insulation resistance test 5 Precaution of Laser Diode 6 Handling Precautions for Traverse Deck 6.1 Handling of optical pick-up 6.2 Grounding for electrostatic breakdown prevention 6.2.1 Human

2、body grounding 6.2.2 Work table grounding 7 Accessories 8 Caution for AC Mains Lead 9 Location of Controls 10 Connections and Operations 11 DVD Optical Pick-up Self-Diagnosis and Replacement Procedure 11.1 Self-diagnosis 11.2 Caution to be used before replacing the optical pick-up and spindle motor

3、assembly RadioFans.CN 收音机爱 好者资料库 11.2.1 Caution to be taken when replacing the optical pick-up 12 Self-Diagnostic Function 12.1 To display the malfunction code automatically 12.1.1 Automatically display function 12.1.2 To redisplay the malfunction code 12.1.3 Automatically display contents 12.2 Malf

4、unction code stored in memory 12.2.1 How to enter the mode and display 12.2.2 To redisplay the malfunction code 12.2.3 Clearing self-diagnostic function 12.3 Service mode table 1 12.4 DVD / CD error code display 12.5 Last error code saved during NO PLAY 12.6 Service mode table 2 12.7 Sales demonstra

5、tion lock function 12.7.1 Setting 12.7.2 Cancellation 12.8 Handling after completing repairs 13 Service Precautions 13.1 Recovery after the DVD player is repaired 13.2 Firmware version-up of the DVD player RadioFans.CN 收音机爱 好者资料库 13.3 Cumulative operation time display function 14 Measurements and Ad

6、justments 14.1 Service tool and equipment 14.2 Important points in adjustments 14.2.1 Important points in optical adjustments 14.3 Storing and handling test discs 14.4 Optical pick-up adjustment 14.4.1 Optical pick-up tilt adjustment 15 Operation Checks and Disassembly Procedures 15.1 Checking for t

7、he DVD module P.C.B., IN / OUT terminal P.C.B., Interface P.C.B., FL P.C.B. and main P.C.B. 15.2 Replacement for the traverse unit 15.3 Replacement for the optical pick-up 15.4 Replacement for the traverse motor and spindle motor 15.5 Disassembly for loading unit 15.6 Replacement for the motor 15.7

8、Replacement for the interface P.C.B., detecting SW P.C.B., motor pulley, intermediate gear, gear (A) and drive rack 15.8 Replacement for the lid ass y 15.9 Replacement for the 8cm holder, lid cover, metal, magnet and magnet holder 16 Schematic Diagram Notes RadioFans.CN 收音机爱 好者资料库 17 Schematic Diagr

9、am 18 Printed Circuit Board Diagram 19 Type Illustration of ICs, Transistors and Diodes 20 Wiring Connection Diagram 21 Block Diagram 22 Terminal Function of ICs 22.1 IC801(C2CBJH000054): System Control 23 Abbreviations 24 Replacement Parts List 25 Cabinet Parts Location 26 Loading Unit Parts Locati

10、on 27 Traverse Unit Parts Location 28 Packaging 29 Schematic Diagram for printing with letter size PV PV PV PV Service Manual TOP NEXT AD0303071C5 A6 DVD/ Tuner unit G SA-ST1PP SA-ST1EB SA-ST1EG Colour (S).Silver Type 2003 Matsushita Electric Industrial Co., Ltd. All rights reserved. Unauthorized co

11、pying and distribution is a violation of law. TOP NEXT 1 Before Repairs TOP PREVIOUS NEXT Note: This item is indicated the contents of SB-WA330 . 1. Turn off the power supply. Using a 10 , 10 W resistor, connect both ends of power supply capacitors (C546, C547, C548, C549) in order to discharge the

12、voltage. 2. Before turning the power supply on, after completion of repair, slowly apply the primary voltage by using a power supply voltage controller to make sure that the consumed current at 50/60 Hz in NO SIGNAL mode (VOL: MIN, SELECTOR: DVD/CD)should be shown below with respect to supply voltag

13、e 120/230/240 V. Power supply voltageAC 120 V, 60 Hz AC 230 V, 50 Hz AC 230-240 V, 50 Hz Consumed currentLess than 1000 mALess than 400 mA Less than 400 mA TOP PREVIOUS NEXT 2 Protection Circuitry TOP PREVIOUS NEXT Note: This item is indicated the contents of SB-WA330 . The protection circuitry may

14、have operated if either of the following conditions is noticed: G No sound is heard when the power is switched ON. G Sound stops during a performance. The functions of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are shorted, or if

15、 speaker systems with an impedance less than the indicated rated impedance of this unit are used. If this occurs, follow the procedures outlined below. 1. Switch OFF the power. 2. Determine the cause of the problem and correct it. 3. Switch ON the power once again. Note: When the protection circuitr

16、y functions, the unit will not operate unless the power is first switched OFF and then ON again. TOP PREVIOUS NEXT 3 Disc information TOP PREVIOUS NEXT TOP PREVIOUS NEXT 4 Safety Precaution TOP PREVIOUS NEXT Note: This item is indicated the contents of SB-WA330 . (This “Safety Precaution” is applied

17、 only in U.S.A.) 1. Before servicing, unplug the power cord to prevent an electric shock. 2. When replacing parts, use only manufactures 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

18、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 exposed to a shock hazard. 4.1 Insulation resistance test TOP PREVIOUS NEXT 4.1 Insulati

19、on resistance test TOP PREVIOUS NEXT 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 jumpered AC plug and each exposed metal cabinet parts, such as screw heads antenna, control sh

20、afts, handle brackets, etc. Equipment with antenna terminals should read between 3 M -5.2 M to all exposed parts. Refer to Fig. 4-1. Equipment without antenna terminals should read approximately infinity to all exposed parts. Refer to Fig. 4-2. Note: Some exposed parts may be isolated from the chass

21、is 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. Fig. 4-1. Fig. 4-2. TOP PREVIOUS NEXT 5 Precaution of Laser Diode TOP PREVIOU

22、S NEXT G For SA-ST1PP Caution: This unit utilizes a class 1 laser. Invisible laser radiation is emitted from the optical pick-up lens when the unit is turn on: 1. Do not look directly into the pick-up lens. 2. Do not use optical instruments to look at pick-up lens. 3. Do not adjust the preset variab

23、le resistor on the optical pick-up. 4. Do not disassemble the optical pick-up unit. 5. If the optical pick-up is replaced, use the manufactures specified replacement pick-up only. 6. Use of control or adjustment or performance of procedures other than those specified herein may result in hazardous r

24、adiation exposure. G For SA-ST1EB, SA-ST1EG TOP PREVIOUS NEXT 6 Handling Precautions for Traverse Deck TOP PREVIOUS NEXT The laser diode in the optical pick-up may break down due to potential difference caused by static electricity of clothes or human body. So be careful of electrostatic breakdown d

25、uring repair of the optical pick-up. 6.1 Handling of optical pick-up 6.2 Grounding for electrostatic breakdown prevention 6.2.1 Human body grounding 6.2.2 Work table grounding TOP PREVIOUS NEXT 6.1 Handling of optical pick-up TOP PREVIOUS NEXT 1. Do not subject the optical pick-up to static electric

26、ity as it is extremely sensitive to electrical shock. 2. To prevent the breakdown of the laser diode, an antistatic shorting pin or similar object is inserted into the flexible board (FFC board). Refer to Fig. 6-1. When removing or connecting the shortpin, finish the job in as short time as possible

27、. 3. Be careful not to apply excessive stress to the flexible board (FFC board). 4. A new optical pick-up has an antistatic flex. When the optical pick-up is replaced, connect the flexible cable (FFC) to the connector first, and then cut the antistatic flex. Refer to Fig. 6-1. 5. Do not turn the var

28、iable resistor (Laser power adjustment). Fig. 6-1. TOP PREVIOUS NEXT 6.2 Grounding for electrostatic breakdown prevention TOP PREVIOUS NEXT 6.2.1 Human body grounding 6.2.2 Work table grounding TOP PREVIOUS NEXT 6.2.1 Human body grounding TOP PREVIOUS NEXT Use the antistatic wrist strap to discharge

29、 the static electricity from your body. Refer to Fig. 6-2. Fig. 6-2. TOP PREVIOUS NEXT 6.2.2 Work table grounding TOP PREVIOUS NEXT Put a conductive material (sheet) or steel sheet on the area where the optical pick-up is placed and ground the sheet. Refer to Fig. 6-3. Fig. 6-3. Caution: The static

30、electricity of your clothes will not be grounded through the wrist strap. So take care not to let your clothes touch the optical pick-up. TOP PREVIOUS NEXT 7 Accessories TOP PREVIOUS NEXT G AC power supply cord For SA-ST1PP (RJA0065-K).1 pc. For SA-ST1EB (RJA0053-3X).1 pc. For SA-ST1EG (RJA0019-2X).

31、1 pc. Note: The configuration of AC power supply cord depends on the area. G FM indoor antenna (RSA0007).1 pc. G AM loop antenna (N1DAAAA00001).1 pc. G Speaker cables (REE1203C)(10 m).2 pcs. (REE1203A)(4 m).3 pcs. G Video cable (K2KA2HA00003).1 pc. G System cable (K1HA25JA0002).1 pc. G Sheet of spea

32、ker feet (RFA0631A-K).1 pc. G Screws (XSN5+16FN).8 pcs. G Clips (QWBG002AA).4 pcs. G Black screws (XTB3+10JFZ).4 pcs. G String for main unit (RMF0321).1 pc. G Sheet of speaker-cable stickers (RQCA1029).1 pc. G Remote control For SA-ST1PP (EUR7623X20).1 pc. Except for SA-ST1PP (EUR7623X40).1 pc. G Ba

33、tteries for remote control (R6/LR6, “AA”, UM-3).2 pcs. Note: These are available on sales route. G Antenna plug for SA-ST1PP only (K2RC021B0001).1 pc. G Antenna plug adaptor for SA-ST1EB only (SJP9009).1 pc. TOP PREVIOUS NEXT 8 Caution for AC Mains Lead TOP PREVIOUS NEXT Note: This item is indicated

34、 the contents of SB-WA330 . TOP PREVIOUS NEXT 9 Location of Controls TOP PREVIOUS NEXT TOP PREVIOUS NEXT 10 Connections and Operations TOP PREVIOUS NEXT This item indicates excerpts about the connection to the speakers and some operations from operation instructions. TOP PREVIOUS NEXT 11 DVD Optical

35、 Pick-up Self-Diagnosis and Replacement Procedure TOP PREVIOUS NEXT 11.1 Self-diagnosis 11.2 Caution to be used before replacing the optical pick-up and spindle motor assembly 11.2.1 Caution to be taken when replacing the optical pick-up TOP PREVIOUS NEXT 11.1 Self-diagnosis TOP PREVIOUS NEXT The op

36、tical pick-up self-diagnosis function and tilt adjustment check function have been included in this unit. When repairing, use the following procedure for effective self-diagnosis and tilt adjustment. Be sure to use the self-diagnosis functionbefore replacing the optical pick-up when “NO DISC” is dis

37、played. As a guideline, you should replace the optical pick-up when the value of the laser drive current is more than 70(DVD), 55(CD). Note: Press the Standby/on button to turn on the power, and check the value within 3 minutes before the unit warms up. (Otherwise, the unit will be incorrect.) TOP P

38、REVIOUS NEXT 11.2 Caution to be used before replacing the optical pick-up and spindle motor assembly TOP PREVIOUS NEXT Before replacing the optical pick-up and spindle motor assembly, check the total using hours for each of them. The checking method is as follows: ItemPlay mode and button combinatio

39、nDisplay Using hours of DVD and CD laserIn STOP mode (no disc), while pressing button on the unit, press button on the remotecontrol. 0 xxxx0yyyy xxxx(DVD), yyyy(CD): Time is shown in 4 digits of decimal notation in a unit of an hours. Note: 1-digit and 6-digit of “0” is not changed. Using hours of

40、spindle motorIn STOP mode (no disc), while pressing button on the unit, press button on the remotecontrol. T2-xxxx- (- indicates a space.) xxxx: Time is shown in 4 digits of decimal notation in a unit of 10 hours. Resetting using hours of DVD and CD laser When displaying the using hours of DVD and C

41、D laser, while pressing button on the unit, press button on the remote control. 0000000000 Resetting using hours of spindle motor When displaying using hours of spindle motor, while pressing button on the unit, press buttonon the remote control. T2-0000- 11.2.1 Caution to be taken when replacing the

42、 optical pick-up TOP PREVIOUS NEXT 11.2.1 Caution to be taken when replacing the optical pick-up TOP PREVIOUS NEXT The optical pick-up may break down due to the static electricity of human body. Take proper protection measures against static electricity before repairing the parts around the optical

43、pick-up. Refer to “Handling Precaution for TraverseDeck”. G Do not touch the area around the laser diode and actuator. G Do not judge the laser diode with a tester. G It is recommended to use an antistatic soldering iron for short-circuit or removing the laser diode. (Recommended soldering iron) HAK

44、KO ESD Product G Solder the land of the flexible cable in the optical pick-up. Note: When using a soldering iron which is not antistatic, short-circuit the terminal of the flexible cable first. After that, short the land. G An antistatic flex is connected with the new optical pick-up. Cut the antist

45、atic flex after the optical pick-up is replaced. TOP PREVIOUS NEXT 12 Self-Diagnostic Function TOP PREVIOUS NEXT This unit is equipped with a self-diagnostic function which, in the event of a malfunction, automatically displays a code indicating the nature of the malfunction. Use this self-diagnostic function when servicing the unit. 12.1 To display the malfunction code automatically 12.1.1 Automatically display function 12.1.2 To redisplay the malfunction code 12.1.3 Automatically display contents 12.2 Malfunction code stored in memory 12