Technics-SLPJ22-cd-sm 电路图 维修手册.pdf

ORDER NO. HAD.zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA 8704113C9 Service Manual COMPACT JOS DIGITAL AUOIO DIGIfZlL SPECIFICATIONS Audio Number of channels: Frequency response: Dynamic range: S/N ratio: Harmonie distortion: Total harmonie distortion: Channei separation: Wow and fiutter: Low-pass filter: 2 (left and right,stereo) 2 20,000 Hz (EIAJ) 96dB 96dB (EIAJ) 0.003% (1kHz,0dB) 0.004% (1kHz,0dB) (EIAJ) 90dB (EIAJ) Below measurable limit HIgh-resolution digital filter Signal Format Sampling frequeney: Correetion system: D-A eonversion: Pickup Aeeess time: Liglit source: Wavelength: Traverse system: 44.1kHz Technics Super Decoding Algorithm 16-blt llnear 1 second (access to the last track) Semiconductor laser 780nm HIgh-speed linear access system Funcllons Automatic play: Direct access play: Repeat play: Search: Program play: Display: Indicators: Disc loading: Synchro recording terminal: Compact Disc Player SL-PJ22 Color K) B l a c k T y p e Area Color Areas (K) E . Continental Europa. (K) E i . . . Italy. (K) E G . . F.R. Germany. (K) E B . . . Belgium. (K) E K . . . United Kingdom. (K) E F . . . France. (K) E H . . . Holland. (K) X L . . . Australia. (K) X A . . . Asia, Latin America, Middle Naar East, Africa and Oceania. (K) P A . . . Far East PX. (K) P E . . . European Military. (K) P C . . . European Audio Club. (K) X B . . . Saudi Arabia. AM tracks Track number Entire disc or programmed tracks Forward/backward track skip Forward/backward manual search For up to 20 selections CD edit recording Total tracks (up to 99) Programmed track Current track Time display (min.,sec.) Time modes display Music matrix (15) Overflow indicator Disc indicator Edit indicator Tape side A / B indicator Repeat indicator Play indicator Pause indicator Motor-driven horizontal type 1/8 inch Technics Panasonic Tokyo Office Matsushita Electric Trading Co., Ltd. Matsushita Electric Trading Co., Ltd. PO Box 288. Central Osaka Japan 6lh Floor, World Trade Center BIdg., No. 4-1, Hamamatsu-cho 2Chome, Minatoku, Tokyo 105, Japan RadioFans.CN 收音机爱 好者资料库 General Power supply: Power consumption: Output voltage: Output Impedance: Load Impedance: For United Kingdom and Australia: AC240V,50Hz For Continental Europe: AC220V,50Hz For Otiiers: AC110127V/220240V,50/60Hz 10W 2V (at OdB) (EIAJ) Approx. 600O More than lOkn DImensions (WXDXH): Welght: 36 X 28 X 7.7 cm 3.3kg Specifications are subject to change without notice. Welght and dimensions are approximate. Measured by E I A J (CP-307). CONTENTS Page PRECAUTION OF LASER DIODE 2 LOCATION OF CONTROLS 3 HANDLING PRECAUTIONS FOR OPTICAL PICKUP 6 BEFORE USING THIS UNIT 6 DISASSEMBLY INSTRUCTIONS 7 MEASUREMENTSAND ADJUSTMENTS 11 EXPLODED VIEW 17 REPLACEMENT PARTS LIST 19 Page RESISTORS AND CAPACITORS 21 TERMINAL GUIDE OF ICS, TRANSISTORS AND DIODES 22 BLOCK DIAGRAM 23 PRINTED CIRCUIT BOARD AND WIRING CONNECTION DIAGRAM 26 SCHEMATIC DIAGRAM 29 TERMINAL FUNCTION OF LSI 33 PRECAUTION OF LASER DIODE Caution: This product utilizes a laser diode. ADVARSEL: I dette a apparat anvendes laser. Use of caution labels Note: O Mark is used, X Mark is not used. Areat SRNZ010S01 SRNZ010S02 SOWD48 SQWD47 El 0 O O O (EK1.|XL1,(EG1. EB. EH, EF, Eil. XA, XB O O X O I 1 SRNZ010S01 CLASS1 L A SE R P R O D U C T Obs: Apparaten innehller laser Komponent av hoger laserklass an klass i. SQWD48 A D V A R S E L - Usynligt laserlys udstrles ved Sbning.UNDGA DIREKTE B E S T R A L I N G . V A R O I T U S ! Laite sisaltaa laserdiodin, joka lahettaa nakymatnta silmille vaarallista lasersateilya A- V SRNZ010S02 SQWD47 DANGER-lnvisible laser radiation when open. AVOID D I R E C T E X - P O S U R E T O B E A M . 2 RadioFans.CN 收音机爱 好者资料库 r LOCATION OF CONTROLS Front Panel O O Power (mains) switch Press ( J i . m ) to switch power (mains) on. Press again ( J . ) to switch power (mains) off. Q Disc holder The disc is inserted in this holder with the label side up. O Open/close button Press this button to open and close the disc holder. O Display panel (Please refer to items Qg) tozyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA (AD ) 0 Play/pause button This button is used tor the following three operations. 1. If the button is pressed while the unit is in the stop mode or in the pause mode, play begins and the play indicator illuminates. 2. If the button is pressed during play, the unit goes to the pause mode, and the pause Indicator illuminates. 3. If the synchro-recording cord is properly connected, pressing this button when the unit Is in the stop or pause modes causes the amplifiers input selectorto switch to CD automatically. PIckup: The pickup is a laser device that reads the Information on the disc surface. The pickup moves across the disc as the disc is played, but it is not visible trom outside the cabinet. Pause mode: Play is stopped, but the pickup remains where it was at the time when the play/pause button was pressed. The disc rotates while the unit is in the pause mode. i O O O O 0 stop button Press this button to stop disc play and cancel all previous settings. Note: When this button is pressed, the unit returns to the stop mode. Stop mode: In the stop mode, the pickup is at the beginning of the first track and the display shows the total number of tracks and total playing time of the disc. (The disc does not rotate.) 0 Forward and backward skip/search buttons These buttons are used for the following flve opera- tions. 1. To program track numbers before starting play (program play). Press either button before starting play. 2. To start play from a speclflc track (direct access play). Press either button before starting play. 3. To skip to the beginning of a speclflc track (skip play). Press either button for an instant (less than one second) during play or the pause mode. (The number of tracks skipped is the same as the number of times one of these buttons is pressed.) 4. To move the pickup forward or backward to a deslred point (manual search play). Keep either button pressed and release it when it reaches the desired point. The pickup moves slowly at first and then rapidly if one of the skip/search buttons is held down for more than about 3 seconds. 5. To speclfy playing time (min.) (preset edit play). O Repeat button Press this button to activate the repeat mode. (The repeat indicator illuminates.) Press again to cancel the repeat mode. - 3 - RadioFans.CN 收音机爱 好者资料库 Recall button Press this button to display the program play sequence in the memory. When this button is pressed, the tracks stored in the memory for program play are shown one by one. Clear button Press this button to cancel the programmed track when the unit is in the stop mode. Each time this button is pressed, the previous entry is cancelled. 0 Time mode select button Use this button to select the desired time display mode. Disc remaining playing time. Track number and remaining playing time of the current track. Playing time from the beginning of the first track. Track number and elapsed playing time from the beginning of the current track. (D Memory button Press this button to enter track numbers before starting play (program play). (A maximum of 20 selections can be programmed.) Th e letter zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA F (FULL) will be displayed if more than 20 memory selection are attempted. Display panel (SS) track no. track no. Q-88:88 i R i n a r* 1 1 time operation track no. Bla V I II 1 time operation (M) (SB () (D (SE) Track number display (track) Track numbers (up to 99) are shown here. (IE) Time display This display shows tour time modes and programmed order dD Play indicator () llluminates when the play mode is activated and goes out when the play is stopped. (30) Pause indicator (II) illuminates when the pause mode is activated and goes out when the pause mode is canceiied. (3E Repeat indicator ( c D ) liluminates when the repeat mode is activated and goes out when the repeat mode is cancelled. (3E Disc indicator ( Ei9 ) Flashes on and off when the disc holder is opening or closing. llluminates when a disc is in the holder (if power is on) and the disc holder is closed. - 4 - Rear panel -O Line out terminals , ForE,EG,EB,EH, 0 Synchro recording terminal Ei areas Remotecontrol terminal -LINE OUT- O ACoutlet O O 0 ACINsocket I I For EK area AC IN socket DjJ AC outlet For XA, PA, PE, PC areas I AC line-voltage selector O o ) | - AC outlet AC IN socket ForXL area AC IN socket For XB area I AC line-voltage selector AC IN socket Line out terminals (LINE OUT) These are the audio output terminals. Connect the line out terminals to the CD or AUX terminals on your amplifier or receiver. Do not connect the line out terminals to the PHONO terminals of your amplifier or receiver. Synchro recording terminal (SYNCHRO REC) Connect the synchro recording cord to the CD synchro recording terminal of your amplifier. Synchro recording functlon Recording can be synchronized with the beginning and end of disc play and pause operation. O Remote control terminal (REMOTE) Note: This terminal can be used only with Technics amplifiers or cassette decks having a synchro re- cording terminal for a CD player. (Contact your dealer for details.) Note: This terminal can be used only with Technics amplifiers or cassette decks (or graphic equalizers) having a remote control terminal for a CD player. (Contact your dealer for details.) O AC outlet SWITCHED outlet Power (mains) is connected by power (mains) switch of the amplifier or tuner. Audio equipment rated up to 50 W can be connected. 0 AC IN socket ( AC IN) Connect this socket to a wall socket or an AC outlet using the power (mains) cord. The configuration of AC power (mains) plug may differ according to the area. 5 HANDLING PRECAUTIONS FOR OPTICAL PICKUP The laser diode in the optical pickup may break d o w n due to potential difference caused by static electricity of clothes or human body. So, be careful of electrostatic breakdown during repair of the optical pickup. Handling of optica! pickup 1 Do not give excessive shock to the optical pickup because it is of extremely precise structure 2. To prevent the breakdown of the laser diode, an anti- static shorting pin is inserted into the flexible board. (FPC board) When removing or connecting the short pin, finish the job in as short time as possible 3. Take care not to apply excessive stress to the flexible board. (FPC board) 4. Do not turn the variable resistor (laser power adjust- ment). It has already been adjusted Optical pickup Lens (Do not touch) FPC board (Handle it carefully) Variable resistor (Do not turn) Be sure to short ttiis portion (Use the shorting pin or clip.) Clip Shorting pin 5 ? Grounding for electrostatic breakdown prevention 1. Human body grounding Use the anti-static wrist strap to relieve the static electricity from your body 2 Work table grounding Put a conductive material (sheet) or steel sheet on the area wherethe optical pickup is placed, and ground the sheet C a ution: The static electricity of your clothes will not be grounded through the wrist strap. So, take care not to let your clothes touch the optical pickup BEFORE USING THIS UNIT 1. Place a soft cloth under the unit to protect it from scratches. 2. Press the lock shaft on the bottom panel to the in (FREE) position (J.). Iron plate or some metais 10 conduct electricity Lock shaft LOCK FREE cloth NOTE: IF THE UNIT IS TRANSPORTED AGAIN, PERFORM THE FOLLOWING STEPS: 1) Remove the disc from the holder. 2) Pull the lock shaft to the out (LOCK) position (.M. J.). CAUTION: Do not transport the unit without locking the lock shaft. SEVERE DAMAGE WILL RESULT. - 6 - DISASSEMBLY INSTRUCTIONS CAUTION: It is very dangerous to look at or touch laser radiation. (Laser radiation is invisible.) With the unit turned on, laser radiation is emitted from the pickup lens. When doing the job, removing the cabinet and disc clamper of this unit, be sure to turn the pover supply off. Ref. No. 1 How to remove the cabinet Ref. No. 3 How to remove the operation buttons Procedure 1 Remove the 4 setscrevs. Procedure 1 2 3 How to remove the operation buttons 1. Remove the screv O and remove the holder. 2. Release the 11 claws. Note: When doing the job, Lock the lock shaft at the bottom of the unit. (See page 6.) Ref. No. 2 Procedure 1 2 How to remove the front panel Ref. No. 4 Procedure 1 2 4 How to remove the main P.C.B. 1. Remove the screw. 2. Slightly pull the tabs outward (arrows ) 3. Remove in the direction of arrow/. 1. Remove the 5 screws. 2. Lift up the P.C.B. to remove it from the chassis tabs. 3. Remove in the direction of the arrow. 9 7 How to check the main P.C.B. When checking the soldered surtace of the main P.C.B. and replacing the parts, do as shown. 1. Remove the main P.C.B. 2. Remove the FPC board (CN101). FPC board from optica! pickup FPC junction P.C.B. (SZZP1070C) FPC board Connector (CN101 Pull out the FPC board. Lift the connector. , Main P.C.B. FPC extension board (SZZP1071C) C a ution: Insert the short pin info the FPC board in order to prevent breakdown of laser diode. (See page 6.) 3. Connect FPC board from optica! pickup to FPC junction P.C.B. (SZZP1070C). C a ution: Cover the foil of the FPC junction P.C.B. with friction tape to prevent a short-circuit between the foi! and the chassis. 4. Connect FPC extension board (SZZP1071C) to FPC junction P.C.B. and CN101 of main P.C.B. 5. Place the main P.C.B. as shown in the figure. C autions: Be sure to connect the P.C.B. ground terminal (ne out terminal) and chassis with a lead wire. Connect the ground wire of ioading base to the chassis. Lead wire GND terminal Main P.C.B Ref. N o. 5 How to remove the FL (display) Ref. No. 6 How to remove the disc clamper P rocedure 1 2 4 5 P roce dure 1 6 1. Unsolder the terminals of FL. 2. Remove FL from the P.C.B. 3. Release the claws of FL holder and remove it to remove the switches. Remove the screw. Disc clamper Key switch Claws - 8 - Ref. No. 7 Procedure 1 2 7 How to remove the loading base Refer to the optical pickup handling precautions (See page 6). 1. Turn the drive gear in the direction of arrow , and shift the disc holder forward. 2. Remove the 4 setscrews. Cautlon: Note the color of each spring, they must be reinstalled in their original positions. 3. Pull out the 3 connectors (CN103, CN401, CN402). 4. Remove the FPC board (CN101). Yellow Yellow Silver (Wifh a blue mark) Disc holder Ref. No. 8 Procedure 1 2 6 8 How to remove the disc holder (disc tray) Set the drive gear as shown below. (Turn it completely to the right,