Service Manuals, User Guides, Schematic Diagrams or docs for : . Rare and Ancient Equipment Prolodgy car audio Prology DVD-300s

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Prology DVD-300s


>> Download Prology DVD-300s documenatation <<

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SERVICE MANUAL
CAUTION : Before servicing this chassis, read the "PRODUCT SAFETY SERVICE FOR VIDEO PRODUCTS" section
                                                                                                       MODEL
                                                                                                       DVD-300
on page 2 of this manual.




                                                 CONTENTS

                         SERVICE PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . 2,3
                         BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
                         ELECTRICAL TROUBLE SHOOTING GUIDE. . . . . . . . . . 5,15
                         PRINTED CIRCUIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16,20
                         REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . 21,24
  PRODUCT SAFETY SERVICING GUIDELINES FOR VIDEO PRODUCTS
CAUTION: DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WA AND               Y         SUBJECT: X-RADIATION
N E V E R P E R F O R M C U S T O M I Z E D I N S T A L L AT I O N S W I T H O U T
MANUFACTURER'S APPROVAL. UNAUTHORIZED MODIFICATIONS WILL NOT                         1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSONNEL
ONLY VOID THE WARRANTY BUT MAY LEAD TO YOUR BEING LIABLE FOR
                            ,                                                           COVER THE SUBJECT OF X-RADIATION. THE ONLY POTENTIAL SOURCE OF
ANY RESULTING PROPERTY DAMAGE OR USER INJURY               .                            X-RAYS IN CURRENT T.V. RECEIVERS IS THE PICTURE TUBE. HOWEVER,
                                                                                        THIS TUBE DOES NOT EMIT X-RYS WHEN THE HIGH VOLTAGE IS AT THE
SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE                                     FACTORY SPECIFIED LEVEL. THE PROPER VALUE IS GIVEN IN THE
THOROUGHLY FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS                             APPLICABLE SCHEMATIC. OPERATION A HIGHER VOLTAGES MA CAUSE A
                                                                                                                          T                   Y
AND SERVICING GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF                        FAILURE OF THE PICTURE TUBE OR HIGH VOLT AGE SUPPLY AND, UNDER
POTENTIAL HAZARDS AND INJURY TO THE USER.                                               CERTAIN CIRCUMSTANCES, MAY PRODUCE RADIATION IN EXCESS OF
WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION                            DESIRABLE LEVELS.
FROM A.C. LINE SHOCK.                                                                2. ONLY FACTORY SPECIFIED C.R.T ANODE CONNECTORS MUST BE USED.
                                                                                        DEGAUSSING SHIELDS ALSO SERVE AS AN X-RAY SHIELD IN COLOR SETS,
SAFETY CHECKS                                                                           ALWAYS RE-INSTALL THEM.
AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED, A CHECK                       3. IT IS ESSENTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN
SHOULD BE MADE OF THE FOLLOWING.                                                        ACCURATE AND RELIABLE HIGH VOLTAGE METER. THE CALIBRATION OF
SUBJECT: FIRE & SHOCK HAZARD                                                            THE METER SHOULD BE CHECKED PERIODICALLY AGAINST A
                                                                                        REFERENCE STANDARD, SUCH AS THE ONE AVAILABLE AT YOUR
1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAY AS                          DISTRIBUTOR.
   TO AVOID POSSIBILITY OF ADJACENT COMPONENT SHORTS. THIS IS
   ESPECIALLY IMPORTANT ON THOSE MODULES WITCH ARE                                   4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERL THERE IS
                                                                                                                                             Y,
   TRANSPORTED TO AND FROM THE REPAIR SHOP.                                             NO POSSIBILITY OF AN X-RADIATION PROBLEM. EVERY TIME A COLOR
                                                                                        CHASSIS IS SERVICED, THE BRIGHTNESS SHOULD BE RUN UP AND DOWN
2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES SUCH AS                         WHILE MONITORING THE HIGH VOLTAGE WITH A METER TO BE CERTAIN
   INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN RELIEFS, POWER                         THAT THE HIGH VOLTAGE DOES NOT EXCEED THE SPECIFIED VALUE AND
   SUPPLY CORDS, AND OTHER HARDWARE HAVE BEEN REINSTALLED PER                           THAT IT IS REGULATING CORRECTLY WE SUGGEST THAT YOU AND YOUR
                                                                                                                        .
   ORIGINAL DESIGN. BE SURE THAT THE SAFETY PURPOSE OF THE                              SERVICE ORGANIZATION REVIEW TEST PROCEDURES SO THAT VOLTAGE
   POLARIZED LINE PLUG HAS NOT BEEN DEFEATED.                                           REGULATION IS ALWAYS CHECKED AS A STANDARD SERVICING
3. SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE COLD                                PROCEDURE AND THAT THE HIGH VOLTAGE READING BE RECORDED ON
   SOLDER JOINTS, SOLDER SPLASHES OR SHARP SOLDER POINTS. BE                            EACH CUSTOMER'S INVOICE.
   CERTAIN TO REMOVE ALL LOOSE FOREIGN PARTICLES.                                    5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A
4. CHECK FOR PHYSICAL EVIDENCE DF DAMAGE OR DETERIORATION TO                            PRODUCT WITH A PROBLEM OF EXCESSIVE HIGH VOLTAGE A  VOID BEING
   PARTS AND COMPONENTS, FOR FRAYED LEADS AND DAMAGED                                   UNNECESSARILY CLOSE TO THE PICTURE TUBE AND THE HIGH VOLTAGE
   INSULATION (INCLUDING A.C. CORD), AND REPLACE IF NECESSARY                           SUPPLY DO NOT OPERATE THE PRODUCT LONGER THAN IT IS NECESSARY
   FOLLOW ORIGINAL LAYOUT, LEAD LENGTH AND DRESS.                                       TO LOCATE THE CAUSE OF EXCESSIVE VOLTAGE.

5. NO LEAD OR COMPONENT SHOULD TOUCH A RECEIVING TUBE OR A                           6. REFER TO HV. B+ AND SHUTDOWN ADJUSTMENT PROCEDURES
   RESISTOR RATED AT 1 WATT OR MORE. LEAD TENSION AROUND                                DESCRIBED IN THE APPROPRIATE SCHEMATIC AND DIAGRAMS(WHERE
   PROTRUDING METAL SURFACES MUST BE AVOIDED.                                           USED).

6. ALL CRITICAL COMPONENTS SUCH AS FUSES. FLAMEPROOF RESISTORS,                      SUBJECT: IMPLOSION
   CAPACITORS, ETC. MUST BE REPLACED WITH EXACT FACTORY TYPES,                       1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTEGRAL
   DO NOT USE REPLACEMENT COMPONENTS OTHER THAN THOSE                                   IMPLOSION PROTECTION SYSTEM, BUT CARE SHOULD BE TAKEN TO
   SPECIFIED OR MAKE UNRECOMMENDED CIRCUIT MODIFICATIONS.                               AVOID DAMAGE DURING INSTALLA TION, AVOID SCRATCHING THE TUBE. IF
7. AFTER RE-ASSEMBLY OF THE SET, ALWAYS PERFORM AN A.C. LEAKAGE                         SCRATCHED REPLACE IT.
   TEST ON ALL EXPOSED METALLIC PARTS OF THE CABINET, (THE                           2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES.
   CHANNEL SELECTOR KNOB, ANTENNA TERMINALS. HANDLE AND
   SCREWS) TO BE SURE THE SET IS SAFE TO OPERATE WITHOUT DANGER                      SUBJECT: TIPS ON PROPER INSTALLATION
   OF ELECTRICAL SHOCK. DO NOT USE A LINE ISOLATION TRANSFORMER
   DURING THIS TEST, MAKE SURE TO USE AN A.C. VOL    TMETER. HAVING                  1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS. CUBBYHOLE OR
   5000 OHMS PER VOLT OR MORE SENSITIVITY IN THE FOLLOWING
                                                ,                                       CLOSELY FITTING SHELF SPACE, OVER OR CLOSE TO HEAT DUCT OR IN
                                                                                                                                                ,
   MANNER; CONNECT A 1500 OHMS 10 WATT RESISTOR, PARALLELED BY                          THE PATH OF HEATED AIR FLOW.
   A.15 MFD. 150V A.C. TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH                     2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PA  TIO
   GROUND (WATER PIPE, CONDUIT ETC.) AND THE EXPOSED METALLIC
                                   ,                                                    INSTALLATIONS WHERE DEW IS A F ACTOR, NEAR STEAM RADIATORS
   PARTS, ONE AT A TIME. MEASURE THE A.C. VOLTAGE ACROSS THE                            WHERE STEAM LEAKAGE IS A FACTOR, ETC.
   COMBINATION OF 1500 OHM RESISTOR AND 15 MFD CAPACITOR.
   REVERSE THE A.C. PLUG AND REPEAT A.C. ANY VOLTAGE                                 3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING.
   MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE                                 THE CUSTOMER SHOULD ALSO AVOID THE USE OF DECORATIVE
   MEASURED MUST NOT EXCEED 75 VOLTS R.M.S. THIS CORRESPONDS                            SCARVES OR OTHER COVERINGS WHICH MIGHT OBSTRUCT VENTILATION.
   TO 0.5 MILLIAMP A.C. ANY VALUE EXCEEDING THIS LIMIT CONSTITUTES A                 4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMERCIAL
   POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED IMMEDIATELY      .                      MOUNTING KIT, MUST FOLLOW THE FACTORY APPROVED MOUNTING
                                                                                        INSTRUCTIONS. A PRODUCT MOUNTED TO A SHELF OR PLATFORM MUST
                                                                                        RETAIN ITS ORIGINAL FEET (OR THE EQUIVALENT THICKNESS IN SPACERS)
                                                                                        TO PROVIDE ADEQUATE AIR FLOW ACROSS THE BOTTOM. BOLTS OR
                                                                                        SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY PARTS OR
                                                                                        WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS.
                                                                                     5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON
                                                                                        SLOPING SHELF OR A TILTED POSITION, UNLESS THE PRODUCT IS
                                                                                        PROPERLY SECURED.
GOOD EARTH GROUND                                      PLACE THIS PROBE              6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS
SUCH AS THE WATER                                      ON EACH EXPOSED                  MOUNTING TO THE CART CAUTION THE CUSTOMER ON THE HAZARDS OF
PIPE, CONDUIT, ETC.                                    METAL PART                       TRYING TO ROLL A CART WITH SMALL CASTERS ACROSS THRESHOLDS
                                                                                        OR DEEP PILE CARPETS.
                                                                                     7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH
SUBJECT GRAPHIC SYMBOLS                                                                 HAS NOT BEEN LISTED BY UNDERWRITERS LABORATORIES, INC. FOR USE
           THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN                         WITH THEIR SPECIFIC MODEL OF TELEVISION RECEIVER OR
           EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE SERVICE                       GENERICALLY APPROVED FOR USE WITH TV'S OF THE SAME OR LARGER
           PERSONNEL TO THE PRESENCE OF UNINSULATED "DANGEROUS                          SCREEN SIZE.
           VOLTAGE" THA MAY BE OF SUFFICIENT MAGNITUDE TO
                        T                                                            8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS. EXPLAIN
           CONSTITUTE A RISK OF ELECTRIC SHOCK.                                         THAT A FOREST OF EXTENSIONS SPROUTING FROM A SINGLE OUTLET
           THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS                      CAN LEAD TO DISASTROUS CONSEQUENCES TO HOME AND FAMILY.
           INTENDED TO ALERT THE SERVICE PERSONNEL TO THE
           PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE
           LITERATURE.                                                                                                                        2
                                SERVICING PRECAUTIONS
CAUTION : Before servicing the DVD covered by this              Electrostatically Sensitive (ES) Devices
service data and its supplements and ADDENDUMS, read            Some semiconductor (solid state) devices can be damaged
and follow the SAFETY PRECAUTIONS NOTE : if                     easily by static electricity. Such components commonly are
unforeseen circumstances create conflict between the            called Electrostatically Sensitive (ES) Devices. Examples of
following servicing precautions and any of the safety           typical ES devices are integrated circuits and some field
precautions in this publications, always follow the safety      effect transistors and semiconductor chip components.
precautions.
                                                                The following techniques should be used to help reduce the
Remember Safety First:                                          incidence of component damage caused by static electricity.

General Servicing Precautions                                   1. Immediately before handling any semiconductor
1. Always unplug the DVD AC power cord from the AC                 component or semiconductor-equipped assembly, drain
   power source before:                                            off any electrostatic charge on your body by touching a
   (1) Removing or reinstalling any component, circuit board,      known earth ground. Alternatively, obtain and wear a
       module, or any other assembly.                              commercially available discharging wrist strap device,
                                                                   which should be removed for potential shock reasons
  (2) Disconnection or reconnecting any internal electrical        prior to applying power to the unit under test.
       plug or other electrical connection.
  (3) Connecting a test substitute in parallel with an
        electrolytic capacitor                                  2. After removing an electrical assembly equipped with ES
                                                                   devices, place the assembly on a conductive surface
        Caution : A wrong part substitution or incorrect           such as aluminum toil, to prevent electrostatic charge
        polarity installation of electrolytic capacitors may       buildup or exposure of the assembly.
        result in an explosion hazard.

                                                                3. Use only a GROUNDED-tip soldering iron to solder or
2. Do not spray chemicals on or near this DVD or any of its        unsolder ES devices.
   assemblies.

                                                                4. Use only an anti-static solder removal device. Some
3. Unless specified otherwise in this service data, clean          solder removal devices not classified a "anti-static" can
   electrical contacts by applying an appropriate contact          generate electrical charges sufficient to damage ES
   cleaning solution to the contacts with a pipe cleaner,          devices.
   cotton-tipped swab, or comparable soft applicator.
   Unless specified otherwise in this service data,
   lubrication of contacts is not required.                     5. Do not use freon-propelled chemicals. These can
                                                                   generate electrical charge sufficient to damage ES
                                                                   devices.
4. Do not defeat any plug/socket B+ voltage interlocks with
   witch instruments covered by this service manual might
   be equipped.                                                 6. Do not remove a replacement ES device from its
                                                                   protective package until immediately before you are
                                                                   ready to install it. (Most replacement ES devices are
5. Do not apply AC power to this DVD and/or any of its             packaged with leads electrically shorted together by
   electrical assemblies unless all solid-state device heat        conductive foam, aluminum foil, or comparable
   sinks are correctly installed.                                  conductive material.)

6. Always connect test instrument ground lead to the            7.   Immediately before removing the protective material
   appropriate ground before connection the test                     from the leads of a replacement ES device, touch the
   instrument positive lead. Always remove the test                  protective material to the chassis or circuit assembly
   instrument ground lead last.                                      into which the device will be installed.

Insulation Checking Procedure                                        Caution : Be sure no power is applied to the chassis or
Disconnect the attachment plug trom the AC outlet and turn           circuit, and observe all other safety precautions.
the power on. Connect an insulation resistance meter(500V)
to the blades of the attachment plug. The insulation            8. Minimize bodily motions when handling unpackaged
resistance between each blade of the attachment plug and           replacement ES devices. (Normally harmless motion
accessible conductive parts (Note 1) should be more than           such as the brushing together of your clothes fabric or the
1M ohm.                                                            lifting of your foot from a carpeted floor can generate
Note 1 : Accessible Conductive Parts including Metal               static electricity sufficient to damage an ES device.)
panels, input terminals, Earphone jacks, etc.

       3
       OVERALL BLOCK DIAGRAM
4




                                                            XS100




                                                                      CD/DVD



                                                                      VR-DVD
                                                                      (CD-LD)




                                                                      LD-DVD
                                                                      VR-CD


                                                                      LD-CD
                                                                      AVCC
                                                         TO PICK UP




                                                                      GND




                                                                      GND
                                                                      VCC
     XS103




                                                                      MD
                                                                      NC




                                                                      NC
                                                                      VC
                                                         MECHANISM




                                                                      F+
                                                                      T+
                                                                      F-


                                                                      T-




                                                                      D
                                                                      C
                                                                      B
                                                                      A
                                                                      E



                                                                      F
             SP-
             SP+
                                                         CHASSIS
             LIM
             GND
             SLED+
             SLED-
                     SERVO              RF AMP                                27MHz                                        VIDEO
     XS102
                     & TRAY                                                                                                ENCODER
             GND                                                HCU04
             CLOSE
             GND
                     DRIVER             D1890                                                                                                  CHROMA
             OPEN                                                                                                          CS4955              RED/AGND
                                                                                                                                               LUMA
             UNLOD                                                                                                                             BLUE/AGND
             LOAD    BA5954                                                           16M SDRAM* 2                                             CVBS2
                     & CD6208                                                                                                                  VGND
    TO PICK UP                                            33.868MHz                                                                            G/CVBS1
                                                                           27MHz                                                               VGND
    MECHANISM                                                                                                                                  12V
    CHASSIS                                                                                                                                    GND
                                                                                                                                               SPDIF
                                                                                                                                               5V
                                                                                                                                               ZERO
                                                                                                                                               AGD
                                                                                                                                               CEN
                                                               ATAPI                                                                           AGD
                                                               INTERFACE                                                                       R-S
                                             SERVO &                                  MPEG-2         AUDIO DATA       AUDIO DAC                AGND
                                                                                                                                               WOOF
                                             DVD                                      DECODER                                                  AGD
                                                                                                                                               L-S
                                             PROCESSOR                                                                PCM1723                  AGD
                                                                                                                                               L
                                                                                      VS2811                                                   AGD
                                             D1870                                                                                             R

                                                                                                                                                  XS109
                                                                                                                                               TO OUTPUT
                                                                                                                                               BOARD
                                   CONTROL
                                   BUS



                                CPU                                                      EEPROM                   4M ROM
     XS107
             RMC                                            64M DRAM
             FDATA              D1850                                                    24C01                    29F040
             FCS
             FCLK
             GND
             3.5V
             3.5V
             24V
             VCC
             12V
             POWER
                                                     POWER




             NC
             NC
                                                                                                                             Bus of Data
                                                     GND
                                                     GND
                                                     GND
                                                     3.6V




                                                     3.5V
                                                     3.5V
                                                     12V


                                                     12V




                                                     24V
                                                     Vcc
                                                     5V

                                                     8V




    TO KEY BOARD                                                                 TO POWER
                                                                           XS106
                                                                                 SUPPLY BOARD
                                                                                                                             Control signals
Electrical Trouble Shooting Guide


   Connection of the unit is correct.




     Setting of the unit is correct



                                        No
          Is power normal?                      Refer to power guide.


             Yes


                                        No
    Is fluoresce display correct?              Refer to display guide.


             Yes

                                        No
        Is open/close normal?                Refer to open/close guide.


             Yes

                                        No
          Can disc be read?                  Refer to read disc guide.


             Yes

                                        No
          Is video normal?                     Refer to video guide.


             Yes

                                        No
           Is audio normal?                     Refer to audio guide.


             Yes


          Normal operation.




                                                                          5
    A        Power Circuit abnormal


                                                      Start

                                                         Yes
                                                                                          12V out of output
                                                                           No             Board normal
                                                   12V AC input                           L401 is open
                                                                                          XS402 is open
                                                                                          XP002 is open
                                                         Yes


                   No          Is there pulse                     Is there pulse           No
                               wave in V302?                      wave in V301?

                                        Yes                               Yes


        C301 or R301 is open.                                                      C301 or R301 is open.
        Is the 7 pin of D301                                                       Is the 10 pin of D301
        Voltage output?                                                            Voltage output?
        Check logic circuit N304.                                                  Check logic circuit N302.
        Check drive circuit N306.                                                  Check drive circuit N305.




                   No          Is 5 pin of XP201                  Are 3 6 pin of           No
                               8V output?                         XP201 5V output?

                                        Yes                               Yes



                                                                            Check if transformer is damaged.
    Check commuting circuit                                                 L302 is open.
    L305,C323,L204,C322                                                     C318 is open.
                                                                            C319 is open.




                                                    Normal




6
B     Display abnormal




         START




                                  Check if voltage of screen F1 and F2 is 3.3V.
                         No      Check if voltage of 34 pin of UPD16311 is -24V.
    Does the screen
       appear?                Check grounded negative voltage of screen F1 and F2.
                                               Replace UPD16311.

       Yes


                                  Check if connection cord between screen and
                         No                  main board is broken?
    Is display normal?
                                     Check if UPD16311 pin is connected.
                                      Check if pin of screen is connected.

       Yes


         Normal




                                                                                     7
     C       Open/close abnormal


                                                      The door isn't open.




                                               Is "OPEN" showed on the screen?


                      Yes                                                                       No




               Is there voltage difference                                                 Check if RMC pin of
              in XP102UNLOAD pin and                                                      XS107 has a waveform.
                       LOAD pin?

                                                                             No
                                                                                                                     Yes
                                               Yes
                                                                                                     No
                                                                       Does XS107 power
                                                                         have voltage?
No


                                             Does drive motor
                                              have voltage?

                            No



                                               Yes                           Yes                  Replace key-circuit board.
     Replace connection cord.




                                             Replace motor.




                                             END




 8
D   Read disc abnormal




              DISC IN




                               No
             Focus on?              Refer to focus guide.


            Yes


                               No
          Is laser normal?          Refer to laser guide.


            Yes


                               No
         Does the disc turn?        Refer to focus guide.


            Yes


                               No
         Can TOC be read?           Refer to TOC guide.


            Yes



              Normal




                                                            9
 E   Video abnormal



                                        No     Check connection between
       Is voltage of XS109 normal?
                                               video encoder and XS109.



               Yes


                                        Yes
          No picture, no sound.                   Replace main board.


                 No

                                        Yes    Check jack of output board
         No picture, have sound.
                                                or replace main board.

                 No


      Have picture, no color or color   Yes   Check main board and replace
      disappeared during playback .                  G102(27MHz).


                 No


         Have picture, but picture      Yes   Check main board and replace
      disappeared during playback .                  G102(27MHz).




10
F   Audio abnormal




     Have picture, no sound




                                   No    Check connection between R, L pin of XP001
    Check if voltage of R, L pin
       of XP001 is normal                              and PCM1723


           Yes


                                   No
     Is N001 and N002 signal             Check 4558 and surrounding components
             output?


           Yes



      Is transistor V304 and       Yes
       V312 for mute usage                 Replace transistor
           broken down?



            No


              Normal




                                                                                      11
 G      Focus abnormal



              No focus




                                   No           1. Check connection cord.
     Does normal voltage at FCS+
        and FCS- of XS100?                      2. Replace pickup.



            Yes

                                        1. Check connection between 14, 7 pin of
                                   No      BA5945 and FCS+, FCS- of XS100.
       Does normal voltage at           2. Check if G101, G102 normal operation.
          D104 pin 14, 7?               3. Check BA5945 and peripheral
                                           components.

            Yes


                                         1. Check connection between D1870
                                   No       and BA5945.
         Does data output at
           D101 pin 154?                 2. Check D1870 and peripheral
                                            components.


            Yes


                                           1. Check connection between CPU
                                   No         and D1870.
      Does parallel data output
       at D105 pin 36 43?                  2. Check CPU and peripheral
                                              components.


            Yes


               Normal




12
H    Laser abnormal




            No laser




                                 Yes    1. Check connection between pickup
    Is LD pin of XS100(18, 30)             and main board.
               4.5V?                    2. Replace pickup.



           No



                                       1. Check connection between D1890
                                 Yes      of pin LD and XS100.
     Does voltage at D103
        pin of 52, 81?                 2. Check D1890 and peripheral
                                          components.



           No



                                        1. Check connection between CPU
                                 No        pin 44 and D1890 pin4.
      Does normal voltage
        at D105 pin 44?                 2. Check CPU and peripheral
                                           components.



          Yes




             Normal




                                                                             13
 I    Turn abnormal



          Disc doesn't turn.




     Check if voltage of SP+ and      Yes
                                                  Check connection of mechanism.
     SP- of XS103 are different.



               No


                                              1. Check connections between BA5954
      Check if voltage of 11 and     Yes         and XS103.
     12 pin of D104 are different.            2. Check BA5954 and peripheral
                                                 components.


               No



                                             1. Check connections between D1870
      Check if voltage of 17 pin     Yes        pin 17 and BA5954 pin 4.
         of D101 is normal.                  2. Check D1870 and peripheral
                                                components.



               No




        Check if data signal of      No     1. Check connections between CPU cortrol
       18,19,30,31,36 43 pin                   bus, data bus and D1870.
          of D105 is normal.                2. Check CPU and peripheral components.



            Yes



               Normal




14
J   TOC abnormal


       TOC doesn't read.




    Limited switch is closed.    No       1. Refer to laser guide.
          Is laser on?                    2. Check slide motor and connections
        Is FOK normal?                       to main board.



         Yes

                                        1. Check connection between 39 pin of
                                 No        D1890 and 7 pin of XS100.
    Does normal RFsignal at             2. Check connection between XS100 and
         D103 pin 39?                      pickup.
                                        3. Replace pickup.

         Yes


                                 No   1. Check connection between D1870
      Does normal RFIN at
                                         and D1890.
     D101(D1870) pin 176?
                                      2. Check D1890 and peripheral components.


         Yes

                                      1. Check ATAPI channel.
                                Yes   2. Check VS2811E and peripheral components.
         Have sound,
          no picture.                 3. Check CS4955 and peripheral components.
                                      4. Check connection between VS2811E and
                                         CS4955.


          No

                                      1. Check ATAPI channel.
                                Yes   2. Check VS2811E and peripheral components.
         Have picture,
          no sound.                   3. Check CS4955 and peripheral components.
                                      4. Check connection between VS2811E and
                                         CS4955.

          No


            Normal




                                                                                    15
OUTPUT BOARD




               16
            17
KEY BOARD
POWER BOARD




              18
     168 KEY BOARD                     168 OUTPUT BOARD




                     168 POWER BOARD




19
DSM7012B DECODER
         REPLACEMENT PARTS LIST
PART No.              PARTS NAME    Q'TY
                         DVD300
S8027      KHL232C(UL) LOADING       1
 01003     D168K KEY ASS'Y           1
  0856     DC168 POWER ASS'Y         1
 00948     DSM7012B DECODER ASS'Y    1
  0857     D168OUT OUTPUT ASS'Y      1
S3230      RCA CORD AUDIO            1
S3231      RCA CORD VIDEO            1
S3118      WIRE                      1
S3119      LASER SERVO WIRE          1
S2701a     7# BATTERY                2
S3251e     CC-0.5



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