Panasonic-SATM53-cs-sm 电路图 维修手册.pdf

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1、Service Manual MODEL UNIT SC-TM53SA-TM53STEREO SB-TM53 FRONT SPEAKER SB-W53 SUB WOOFER SC-TM53 SB-TM53 SA-TM53 SB-TM53SB-W53 Specifications Potencia de salida SC-TM 53Frontal (Bajo) 75W RCM por canal (5) 1Khz, 10%DAT (Alto) 70W RCM por canal (5) 1 kHz 10% DAT Sub Woofer160W RCM 80 Hz (8) 10% DAT Not

2、es: Specifications are subject to change without notice. Mass and dimensions are approximate.Total harmonic distortion is measured by the digital spectrum analyzer. 2004 Matsushita Electric Industrial Co. Ltd. All rights reserved. Unauthorized copying and distribution is a violation of law. Amplific

3、ador SA-TM53 Potencia de salida 4000 W (P.M.P.O) Consumo de potencia 290 W Sencibilidad Aux: 250 mV Rango de sintona AM: 520-1710MHz (paso de 0,2 MHz) Rango de sintona FM: Dimensiones (b x h x l) 250 mm x 330 mm x 341mm Peso: 7.1 kg aprox Alimentacin 127V ca 10% 60 Hz 87.9-107.9 MHz (paso de 0,2 MHz

4、 87.5-108.0 MHz (paso de 0,1 MHz Bafles SB-W53 FRONTAL Bocina Super Tweeter - - - - - - Bocina Tweeter - - - - - - Bocina Woofer - - - - - - IMPEDANCIA Sub Woofer 8 Alto - - - - - - Bajo - - - - - - Dimensiones (b x h x l) 240 mm x 330 mm x 267mm Peso: 3.4 kg aprox. ORDER NO. MD0412589C1 A6 Bafles S

5、B-TM53 FRONTAL Bocina Super Tweeter 2.5 cm Bocina Tweeter 6 cm Bocina Woofer 16 cm IMPEDANCIA Frontal - - - - - - Alto 5 Bajo 5 Dimensiones (b x h x l) 240 mm x 330 mm x 230mm Peso: 3.2 kg aprox. SUB WOOFER Sub Woofer 16 cm RadioFans.CN 收音机爱 好者资料库 WARNING This service information is designed for exp

6、erienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potencial dangers in attemping to service a product. Products powered by electricity should be serviced or repaired only by experienced

7、professional technicians. Any attempt to service or repair the product or products dealt with in this service information by anyone else could result in serious injury or death. ! Contents 1 Safety Precaution 1_1 Insulation Resistance Test 1_1_1 Caution for fuse replacement 2 Before Repair and Adjus

8、tment 3 Protection Circuitry 4 Prevention of Electro Static Discharge (ESD) to Electrostatically Sensitive (ES) Devices 5 Handling the Lead-free Solder 5_1 About lead free solder (PbF) 6 Handling Precautions For Traverse Deck 7 Precaution of Laser Diode 8 Accessories 9 Operation Procedures 10 Disass

9、embly and Assembly of Main Component 10_1 Disassembly flow chart 10_2 Gear for servicing (jig) Information 10_3 Disassembly of Top Cabinet 10_4 Disassembly of CD Lid 10_5 Disassembly of Rear Panel 10_6 Disassembly of CD Mechanism Unit 10_7 Disassembly of Main P.C.B. 10_8 Disassembly of Sub-Power P.C

10、.B. 10_9 Disassembly of Power P.C.B. 10_10 Disassembly of Transformer P.C.B. 10_11 Disassembly of Front Panel Unit 10_12 Disassembly of Deck Mechanism Unit 10_13 CD Mechanism Main Component Replacement Procedures 10_13_1 Replacement of the Traverse Deck 10_13_2 Replacement for the Disc Tray 10_13_3

11、Disassembly and reassembly for mechanism base drive unit 10_13_4 Replacement for the motor assy 10_14 Replacement for the pinch roller assy and head block 10_15 Replacement for the Deck motor assy, capstan belt A, capstan belt B and winding belt 10_16 Replacement for the cassette lid assy 10_17 Rect

12、ification for tape jam problem 11 Checking for major P.C.Bs 11_1 Checking of Main P.C.B. 11_2 Checking of Transformer P.C.B. 11_3 Checking of Panel, Deck Typically the melting point is 50 - 70F (30 - 40C) higher. Please use a high temperature soldering iron. In case of soldering iron with temperatur

13、e control,please set it to 700 20F (370 10C). Pb free solder will tend to splash when heated too high (about 1100F/600C). When soldering or unsoldering, please completely remove all of the solder on the pins or solder area, and be sure to heat the soldering points with the Pb free solder until it me

14、lts enough. 6 Handling 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).

15、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 shock. 2. To prevent the breakdown of the laser diode, an antistatic shorting pin is inserted into the flexible board (FFC board). 3. Take

16、care not to apply excessive stress to the flexible board (FFC board). When removing or connecting the short pin, finish the job in as short time as possible. 4. Do not turn the variable resistor (laser power adjustment). It has already been adjusted. 5 Grounding for electrostatic breakdown preventio

17、n 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 place, and ground the sheet. Caution : The static electricity

18、 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 laser diode against electrostatics breakdown.

19、 Be sure to remove the solder from the short point before making connections. 7 Precaution of Laser Diode CAUTION: This unit utilizes a class 1 laser. Invisible laser radiation is emitted from the optical pickup lens. Wavelength: 780nm When the unit is turned on: 1. Do not look directly into the pic

20、k 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 specified replacement pick up only. 6. Use of contr

21、ol 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 HEREIN MAY RESULT IN HAZARDOUSRADIATION EXPOSURE.

22、 Use of caution label (Except for U.S.A.) 6 8 Accessories Remote Control NZQAHB000054 (1 Pc) FM Antenna RSA0006-L (1 Pc) AC Cord SJA168-1A (1 Pc) AM Loop Antenna N1DAAAA00001 (1 Pc) 7 9 Operation Procedures 8 10 Disassembly and Assembly of Main Component “ATTENTION SERVICER” Some chassis components

23、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 replacing the main components. 2.-For reassembly after operation checks or replacement, reverse the respective procedures. Specia

24、l reassembly procedures are described only when required. 3.-Select items from the following index when checks or replacement are required. 4.-Refer to the Parts No. on the page of “Parts Location and Replacement Parts List” (Section 23), if necessary. 10.1 Disassembly flow chart The following chart

25、 is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the servicing. To assemble the unit, reverse the steps shown in the chart as below. 10.2 Gear for servicing (jig) Information 1.-This unit has a gear which is used for checking items (Open/Close

26、 of disc tray, up/down operation of traverse unit by manually) when servicing. 2.-For preparation of gear (for servicing), perform the procedures as follows. 3.-In case of re-servicing the same set, the “gear for servicing” may has been taken off because it has been used. The “gear for servicing” mu

27、st be stored. Remove the gear provided with mechanism cover as shown below. 9 Insert the hexagonal screwdriver (2mm) into the gear, and then project the tip of screwdriver for 1 2 mm in length. 10.3 Disassembly of Top Cabinet Step 1 Remove 2 screws at each side and 5 screws at rear panel. Step 2 Lif

28、t up both sides of the top cabinet, push the top cabinet towards the rear and remove the top cabinet. 10.4 Disassembly of CD Lid (The CD changer unit can be removed after the CD Lid is removed) Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet Opening the disc tray automatical

29、ly (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 open automatically. 10 Step 4 Release the 2 claws, and then remove the CD Lid. Step 5 Press the OPEN/CLOSE button, the disc tray w

30、ill close. Step 6 Press the POWER button to turn the power off. Opening the disc tray manually (Using service tools) 11 Step 1 Insert the gear tool into the hole on the underside of CD chassis and then rotate in the direction of arrow. The disc tray will be opened. Step 2 Release the 2 claws, and th

31、en remove the CD lid cover. Step 3 Repeat Step 2 but rotate the gear tools in anti- clockwise direction Step 4 The disc tray will be closed. 10.5 Disassembly of Rear Panel Follow the (Step 1) - (Step 2) of Item 10.2 - Disassembly of Top Cabinet Step 1 Remove 6screws and disconnect wire CN2810 (Fan)

32、at rear cabinet as shown. 10.6 Disassembly of CD Mechanism Unit Follow the (Step 1) - (Step 2) of Item 10.3 - Disassembly of Top Cabinet Step 1 Remove one screw at rear panel. Step 2 Detach the FFC wires (CN2801 QZZCWAT 14.1.1 Tape Speed Adjustment (Deck 1/2) 1. Set the tape edit button to “NORMAL”

33、position. 2. Insert the test tape (QZZCWAT) to DECK 2 and playback (FWD side) the middle portion of it. 3. Adjust Motor VR (DECK 2) for the output value shown below. Adjustment target: 2940 3060 Hz (NORMAL speed) 4. After alignment, assure that the output frequency of the DECK 1 FWD are within 60 Hz

34、 of the value of the output frequency of DECK 2 FWD. Fig.1 14.1.2 Bias and Erase Voltage Check 1. Set the unit “AUX” position. 2. Insert the Normal blank tape (QZZCRA) into DECK 2 and the unit to “REC” mode (use “ REC/STOP” key). 3. Measure and make sure that the output is within the standard value.

35、 Bias voltage for Deck 2144mV (Normal) Erase voltage for Deck 280mV (Normal) Fig.2 Fig.3 14.1.3 Bias Frequency Adjustment (Deck 1/2) 1. Set the unit to “AUX” position. 2. Insert the Normal blank tape (QZZCRA) into DECK 2 and set the unit to “REC” mode ( use “REC/STOP” key). 3. Adjust L1002 so that t

36、he output frequency is within the standard value. Standard Value: 97 8 kHz Fig.4 14.2 Tuner Section 14.2.1 AM-IF Alignment 1. Connect the instrument as shown in Fig.5. 2. Set the unit to AM mode. 3. Apply signal as shown in Fig. 5 from AM-SG. 4. Adjust Z2602 so that the output frequency is maximized

37、 in Fig. 6. 43 Fig.5 Fig.6 14.2.2 AM RF Adjustment Connect the instrument as shown in Fig. 7. Set the unit to AM mode. Set AM-SG to 520kHz. Receive 520kHz in the unit. Adjust Z2602 (OSC) so that the EVM-AC is maximized. Set AM-SG to 600Hz. Receive 600Hz in the unit. Adjust Z2602 (ANT) so that the EV

38、M-SG is maximized. Set AM-SG to 520kHz. Receive 520kHz in the unit. Adjust L2602 (OSC) so that the EVM-DC value is with 1.10.5V. Fig.7 14.3 Alignment Points 14.3.1 Cassette Deck Section 14.3.2 Tuner Section 44 15 Block Diagram 45 6602 6601 564 46 47 564 9 48 16 Voltage Measurement 49 50 51 17 Schema

39、tic Diagram SW1 : Push switch SW2 : Push switch SW3 : Open switch SW4 : CD switch SW5 : Load switch S951 : Mode switch S952 : Half switch S971 : Mode switch S972 : Half switch S975 : Recinh_F switch S6101 : Open/ Close switch S6102 : CD 1 switch S6103 : CD 2 switch S6104 : CD 3 switch S6105 : CD 4 s

40、witch S6106 : CD 5 switch S6201 : Rew switch S6202 : Tuner switch S6203 : CD switch S6204 : FF switch S6205 : Stop switch S6206 : Deck 1/2 switch S6207 : Deck 2 Open switch S6208 : TAPE switch S6209 : AUX switch S6210 : Deck 1 Open switch S6301 : Power switch S6303 : SSEQ switch S6304 : REC switch S

41、6305 : Demo/Display switch S7201 : Rest switch VR6491 The voltage value and waveforms are the reference voltage of this unit measured by DC electronic voltmeter (high impedance) and oscilloscope on the basis of chassis. Accordingly, there may arise some error in voltage values and waveformsdepending

42、upon the internal impedance of the tester or the measuring unit. No mark: Playback : Rec : FM ( ) : CD Importance safety notice : Components identified by mark have special characteristics important for safety. Furthermore, special parts which have purposes of fire-retardant (resistors), high- quali

43、ty sound (capacitors), low-noise (resistors), etc. are used. Whenreplacing any of components, be sure to use only manufacturers specified parts shown in the parts list. Caution ! IC, LSI and VLSI are sensitive to static electricity. Secondary trouble can be prevented by taking care during repair. Co

44、ver the parts boxes made of plastics with aluminium foil. Put a conductive mat on the work table. Ground the soldering iron. Do not touch the pins of IC, LSI or VLSI with fingers directly. (All schematic diagrams may be modified at any time with the development of the new technology) Note: 17.1 (A)

45、CD Servo Circuit 52 53 17.2 (B) Main (Tuner) Circuit 54 17.3 (B) Main Circuit 55 56 57 58 59 17.4 (C) Panel Circuit 60 61 17.5 (D) Transformer Circuit, (E) CD Detect Circuit, (F) Spindle Position Circuit H: Tri- State 5SPOUTOSpindle driver output signal 6SPPOLOSpindle driver output signal 7TRVPOSpin

46、dle driver output signal 8TRVMOSpindle driver output signal 9TRVP2OTraverse driver output signal 2 (+) 10TRVM2OTraverse driver output signal 2 (-) 11TRPOTraverse driver output signal (+) 12TRMOTraverse driver output signal (-) 13FOPOTraverse driver output signal (+) 14FOMOTraverse driver output signal (-) 15IOVDD3-I/O power supply 3 16DVDD1-Power supply 1 for digital circuit 17DVSS1-Digital circuit GND 1 18ADPVCCIPower voltage monitor. Power voltage input 19TEINIDSP traverse error signal input 20FEINIDSP focus error signal input 21CEAI/OHPF-Amp capacita