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Panasonic SL-SW850 Service Manual
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Panasonic SL-SW850 Service Manual

Panasonic SL-SW850 Service Manual

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AD9907178C8
Portable CD Player
SL-SW850
Traverse Deck: RAE0220Z Mechanism Series
Colour
(S)............Silver Type
Areas
EB............Great Britain.
EG............Europe and Russia.
GC............Asia and Saudi Arabia.
GN............Oceania.
SPECIFICATIONS
Specification

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Summary of Contents for Panasonic SL-SW850

  • Page 1 AD9907178C8 Portable CD Player SL-SW850 Traverse Deck: RAE0220Z Mechanism Series Colour (S)....Silver Type Areas EB....Great Britain. EG....Europe and Russia. GC....Asia and Saudi Arabia. GN....Oceania. SPECIFICATIONS Specification...
  • Page 2 Audio No. of channels: 2 channels (left and right, stereo) Frequency response: 20 to 20,000 Hz (+0.5dB, -1.5dB) Output voltage: 0.6 V (50k S/N: more than 94 dB* Wow and flutter: Below measurable limit DA converter: 1 bit, MASH Headphones output level: Max.

  • Page 3: Precaution Of Laser Diode

    1. Precaution of Laser Diode CAUTION: This product utilizes a laser diode with the unit turned "on", invisible laser radiation is emitted from the pickup lens. Wave length: 780 nm Maximum output radiation power from pickup: 100 W/VDE Laser radiation from the pickup lens is safety level, but be sure the followings: 1.
  • Page 4 2. Accessories - Stereo headphones ......... 1 pc. (RFEV708P-HS) - Hand grip ............1 pc. (RGQT0006-K) - Ni-Cd rechargable batteries with carrying case..........1 pc. (RFKFP3GAVABA) For EB area - AC adaptor ............1 pc. (RFEA403B-S) For EG area - AC adaptor ............

  • Page 5: Handling Precautions For Traverse Deck

    - AC adaptor ............1 pc. (RFEA403A-S) - Plug adaptor............1 pc. (SJP5213-2) 3. Operating Instructions 4. 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.

  • Page 6: Operation Checks And Component Replacement Procedures

    4.2. Grounding for electrostatic 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 optical pickup is placed, and ground the sheet.

  • Page 10: Checking The Operation Problems On The Traverse Deck (Optical Pickup)

    6. Checking the Operation Problems on the Traverse Deck (Optical Pickup) Make sure to follow the procedures below to check the operation problems of the traverse deck (optical pickup) before replacing it. Replace the traverse deck only after the problem is identified.
  • Page 11 Check the operations described below on the traverse deck after replacing it. * Checking Skip Search 1. Play an ordinary musical program disc. 2. Press the skip button to check for normal skip search operation (in both the forward and reverse directions). * Checking Manual Search 1.

  • Page 12: Automatic Adjustment Results Display Function (Self-Check Function)

    7. Automatic Adjustment Results Display Function (Self-check Function) On this unit (SL-SW850), each automatic adjustment results are displayed on the LCD. This function is convenient to check or identify which automatic adjustment circuit is incorrect. The followings are the contents of the automatic adjustment result displays (self-check function).
  • Page 13 <Example> Follow the below steps when "E-1" is displayed. (Cause: Focus balance (FBC) is set beyond the limit.) Check if (1) the waveform or voltage of the focus servo circuit is correct. (2) the optical pickup returns to the normal state by exchanging the traverse deck. Follow the below steps when "E-4"...

  • Page 14: Measurements And Adjustments

    If any other disc than the test disc (SZZP1054C) is used, an error message may be displayed. This is not a malfunction. 8. Measurements and Adjustments Warning: This product uses a laser diode. Refer to caution statements. ACHTUNG: - Die lasereinheit nicht zerlegen. - Die lasereinheit darf nur gegen ein vom hersteller spezifizierte einheit ausgetauscht werden.
  • Page 15 8.1. POWER SUPPLY VOLTAGE ADJUSTMENT 1. Connect the DC voltmeter to VDD(+) and GND on the P.C.B. 2. Connect the AC adaptor cord to the DC (IN) port and move the PLAY switch to the ON position. Anti-shock is set in OFF position. (Use a new dry cell battery or a rechargeable battery that is full charged.) 3.
  • Page 16 2. Press the manual search button to check for smooth manual search operations at either low or high speed (in both the forward and reverse directions). * Checking Playability 1. Play the 0.7 mm black dot and the 0.7 mm wedge on the playability test disc (SZZP1054C) and verify that no sound skip or noise occurs.

  • Page 17: Schematic Diagram Note

    10. Schematic Diagram Note 10.1. Schematic Diagram Notes 10.2. Type Illustration of IC’s, Transistors and Diodes 11. Schematic Diagram 12. Printed Circuit Board and Wiring Connection Diagram 13. Block Diagram 14. Terminal Function of IC's 14.1. IC101(AN8839NSBE1):SERVO AMP Mark Function Division Tracking signal input (1) Tracking signal input (2)
  • Page 33 Mark Function Division /RFDET RF detection signal output (L: detection) 16 PDOWN Reduced voltage detection signal input OFTR Off-track signal output (H: off-track) Unused and open RF envelop signal output 20 ENVOFF Envelop control input Unused and open TE IN Tracking error amplifier input TE OUT...
  • Page 34 Mark Function Division When MSEL from IC501 is H : Crystal oscillator 1/2 frequency-dividedclock OSC1 signal input (I SMCK = 8.4672 MHz) When MSEL from IC501 is L : Crystal oscillator 1/4 frequency-divided clocksignal input (I SMCK = 4.2336 MHz) OSC2 Crystal oscillator1/ 2frequency-...
  • Page 35 Mark Function Division Spindle motor revolution cycle signal input Hard mute output Output of serial command latch to peripheral IC´s 42 RANDOM RANDOM switch input 43 RESUME RESUME switch input HOLD HOLD switch input 45 STROBE1 STROBE1 output 46 STROBE2 STROBE2 output 47 EQSEL1 EQ selection input1...
  • Page 36 Mark Function Division Triangular wave output (connected to ground via a capacitor) Power supply Unused and open VREF Reference voltage input External clock input PVCC1 Power supply V01R Focus coil drive signal output PGND1 Ground connection V01F Focus coil drive signal output 10 PVCC12 Power supply...
  • Page 37 Mark Function Division PVCC3 Power supply V03F Traverse motor drive signal output 31 PGND34 Ground connection Unused and open For output of spindle motor output power supply PVCC4 Power supply VLIM Spindle motor gain control signal input Channel 4 filter (connected to VREF via a capacitor) Reference voltage input Spindle motor control...
  • Page 38 Mark Function Division Output TR setting resistor connection Power supply Input of spindle motor output power supply Unused and open WOUT Spindle motor drive signal output VOUT 14.5. IC11(RS10003E2):DC/DC CONVERTER Mark Function Division P.GND Ground connection DC/DC converter coil drive PVCC1 Power supply VSEN...
  • Page 39 Mark Function Division MCLK/ Charging ON/OFF CHARGE Serial/parallel switching (connected to power supply) DVDD Power supply DC/DC converter external clock input 22 PREGND Ground connection AREF Unused and open AVCC Ripple filter output Ripple filter smoothing capacitor connection RESET Reset detection output SOFT Soft start setting (connected to ground via a...
  • Page 40 Mark Function Division DVDD Power supply for DRAM Data input/output for DRAM Write enable output for DRAM NRAS RAS control signal output for DRAM Data 2/3 input/output for DRAM NCAS1 CAS control 1 signal output for DRAM NCAS2 CAS control 2 signal output for DRAM Addresses 8-4 output for DRAM...
  • Page 41 voltage input...
  • Page 42 Mark Function Division Focus error signal input (analog input) Tracking error signal input (analog input) RFENV RF envelope signal input (analog input) Off-track signal input (H: off -track) 36 NRFDET RF detection signal input (L : detection) Dropout signal input (H: dropout) LDON Laser ON signal output (H:...
  • Page 43 Mark Function Division FLAG Unused and open FCLK Unused and open Gain control output for during XBS operation (when ON: increased 6 dB) Unused and open Spindle motor gain control signal output Unused and open MCLK Microprocessor command clock signal input (detected at leading edge) MDATA Microprocessor command...

  • Page 44: Replacement Parts List

    Mark Function Division Crystal oscillator circuit output (I = 16.9344 MHz) DVDD1 Power supply for digital circuits DVSS1 Ground connection for digital circuits 15. Replacement Parts List Notes: *Important safety notice: *Components identified by ; ; have special characteristics important for safety. *Furthermore, special parts which have purposes of fire-retardant (resistors), high-quality sound (capacitors), low-noise (resistors), etc.
  • Page 45 assembly, and in accordance with the laws governing part and product retention. After the end of this period, the assembly will no longer be available. ACHTUNG: Die lasereinheit nicht zerlegen. Die lasereinheit darf nur gegen einc vom hersteller spezifizierte einheit ausgetauscht werden. Ref.
  • Page 46 Ref. No. Part No. Part Name & Remarks Description RFEA403Z-S AC ADAPTOR (GC) RFEA403A-S AC ADAPTOR (GN) RFEV708P-HS STEREO HEADPHONE RGQT0006-K HAND GRIP RQA0117 WARRANTY CARD (EB,EG) RQX7433ZA WARRANTY CARD (GN) RQCB0169 SERVICE CENTER LIST RQT5082-B INSTRUCTION MANUAL (EB GN)<IA> RQT5080-E INSTRUCTION MANUAL (EG)<IB>...
  • Page 47 Ref. No. Part No. Part Name & Remarks Description C408 ECUVNE223KBV 25V 0.022U C410 ECUV1H122KBV 50V 1200P C411 ECUVNA105ZFV 10V 1U C431-33 ECUV1H222KBV 50V 2200P C434 ECUV0J474KBV 6.3V 0.47U C435,36 ECUV1C333KBV 16V 0.033U C437 ECEA0JKS470 6.3V 47U C438 ECUV1H152KBV 50V 1500P C503 ECUV1H561KBV 50V 560P...
  • Page 48 Ref. No. Part No. Part Name & Remarks Description IC301 SC440324CFU IC401 BH6522FV IC402 BA6966FV IC501 MN662782RPT1 IC502 MNA7400CTA1T IC701 TA2120FNEL ICP11 UNHH20600L JK11 RJJ43K09-C JACK,DC IN JK601 RJJD3S5ZB-C JACK,AUDIO OUT RLQU331KT-W COIL RLQS101KT1-T COIL RLQU331KT-W COIL L401 RLQS330KT1-T COIL LCD301 RSL5241-T RPK1277...
  • Page 49 Ref. No. Part No. Part Name & Remarks Description ERJ3GEYJ683V 1/16W 68K ERJ3GEYJ103Z 1/16W 10K R113,14 ERJ3GEYJ330V 1/16W 33 R120 ERJ3GEYJ103Z 1/16W 10K R121,22 ERJ3GEYJ124V 1/16W 120K R125,26 ERJ3GEYJ124V 1/16W 120K R127 ERJ3GEYJ473V 1/16W 47K R201 ERJ3GEYJ2R2V 1/16W 2.2 R202 ERJ3GEYJ223V 1/16W 22K R203...

  • Page 50: Cabinet Parts Location

    Ref. No. Part No. Part Name & Remarks Description R719,20 ERJ3GEYJ105V 1/16W 1M R726 ERJ3GEYJ473V 1/16W 47K R727 EXBV4V331JV 1/32W 330 R906 ERJ3GEYJ823V 1/16W 82K R907 ERJ3GEYJ123V 1/16W 12K R908 ERJ3GEYJ393V 1/16W 39K R909 ERJ3GEYJ473V 1/16W 47K RJ1-J3 ERJ3GEY0R00V CHIP JUMPER RJ11-13 EYF8CU TEST JUMPER...
  • Page 51 17. Packaging...
  • Page 52 Printed in Japan (H990707500 AM/TN)
  • Page 53 GN....Oceania. Change of SHEET Please file and use this supplement manual together with the service manual for / Model No. SL-SW850-P,PC, Order No. AD9905129C1. / Model No. SL-SW850-EB,EG,GC,GN, Order No. AD9907178C8. / Model No. SL-SW851C-PC, Order No. AD9905129C1. / Model No. SL-SW870-P,PC, Order No. AD9905128C1.
  • Page 54 1. Purpose This supplement is intended to provide the following information to the / Service Manual above: - Discs may sustain damage depending on the thickness of the sheets. So we have changed the sheet / thickness from 0.5mm to 0.4mm.
  • Page 55 ORDER No. AD0005102S0 Portable CD Player SL-SW870 / SL-SW850 / SL-SW851C Colours (S)....Silver Type (SW870/SW850) (K)....Black Type (SW870/SW851C) Areas P....U.S.A. (SW870/SW850) PC....Canada. (SW870/SW850/SW851C) EB....Great Britain. (SW850) EG....Europe and Russia. (SW850) GC....Asia and Saudi Arabia. (SW850) GN....Oceania. (SW850) Supply of Buckle Kit Parts Please file and use this supplement manual together with the service manual for / Model No.SL-SW870(P,PC), Order...
  • Page 56 1. Purpose This supplement is intended to provide the following information to the / Service Manual above: - Buckle Kit (Right & Left Sets) Parts will be supplied as replacement parts / for repair of buckle. 2. Buckle Parts Location 3.
  • Page 57 CD COVER SL-SW870(S) RYF0533B-R CD COVER SL-SW870(K) RYF0533-H CD COVER(S) SL-SW850(S) RYF0533A-K CD COVER(K) SL-SW851C(K) * CD COVER will be supplied in the same state, that is, with / buckle attached. 4. Dissolution of buckle ass'y NOTE: - When replacing the buckle ass’y, make sure to replace a pair of buckle ass’y(both left and right) to new one.
  • Page 58 5. Installation of buckle ass’y NOTE: - When replacing the buckle ass’y, make sure to replace a pair of buckle ass’y(both left and right) to new one. - The following disassembly instructions are shown with buckle ass’y(L). / For buckle ass’y (R), make to reassemble same as to that of buckle ass’y(L).
  • Page 59 Printed in Japan / P000500000 TF/SF...