Service Manuals, User Guides, Schematic Diagrams or docs for : Daewoo Home Cinema dhc-x100_150_svc_a4_030906f_412

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                                S/N No. :



Service Manual
Digital Home Cinema System
Mini Component System

             Model: DHC-X100 Series
                  DHC-X100/X150




                                                        N
                                                 TUR
                                              /RE
                                        MENU




                                                                           E
                                                                        TIM




                                                                    E
                                                             ANGL




                   [DHC-X100]




                                                    N
                                               TUR
                                           /RE
                                       MENU




                                                                           E
                                                                        TIM




  ANDBY/ON
ST


                                                                E
                                                            ANGL




                   [DHC-X150]

DAEWOO ELECTRONICS CO., LTD.
http : //svc.dwe.co.kr                                       Aug. 2003
                                                                   DIGITAL HOME CINEMA SYSTEM
                                                                                  [* DVD-DR4033 for Quelle] DHC-X100
                                                                                                            DHC-X150



     Contents
1. SAFETY PRECAUTIONS......................................................2/3

2. SPECIFICATIONS....................................................................4
                                                                                             8. INTERNAL BLOCK DIAGRAM OF ICs............................18/23
3. LOCATION OF USERS CONTROLS....................................5/7
     FRONT PANEL                                                                             9. BLOCK DIAGRAM.................................................................24
     REAR PANEL
     DISPLAY                                                                                 10. WIRING DIAGRAM...............................................................25
     REMOTE CONTROLLER
                                                                                             11. SCHEMATIC DIAGRAM..................................................26/31
4. CONNECTING TO EQUIPMENT...........................................8/9                          Mi-COM
     CONNECTING TO TV                                                                             INPUT/VIDEO
     CONNECTING TO AUDIO & VIDEO                                                                  PROLOGIC
     CONNECTING TO SPEAKER                                                                        AMP
                                                                                                  POWER
5. TROUBLE SHOOTING GUIDE.........................................10/14
                                                                                             12. PRINTED CIRCUIT DIAGRAM........................................32/35
6. DVD PROGRAM DOWNLOAD METHOD..............................15                                    MAIN
                                                                                                  DSP
                                                                                                  FRONT [DHC-150 Only]
7. WAVEFORMS OF MAJOR CHECK POINT......................16/17
     AUDIO OUT SIGNAL WAVEFORM
     DAC OUTPUT SIGNAL WAVEFORM                                                              13. EXPLODED VIEW AND MECHANICAL PARTS LIST...36/37
     OPTICAL OUTPUT AUDIO DATA SIGNALFORM                                                         MECHANICAL EXPLODED VIEW
     L/R CLOCK DATA WAVEFORM DURING NORMAL PLAY                                                   MECHANICAL PARTS LIST
     SERIAL DATA OUTPUT WAVEFORM DURING NORMAL PLAY
     Pr OUTPUT DATA WAVEFORM IN COMPONENT OUTPUT                                             14. ELECTRICAL PARTS LIST............................................38/45
     Pb OUTPUT DATA WAVEFORM IN COMPONENT OUTPUT                                                  ELECTRICAL PARTS LIST
     Y OUTPUT DATA WAVEFORM IN COMPONENT OUTPUT




                                                                                         1
 1. Safety Precautions
WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE                  laundry tub, in a wet basement, or near a swimming pool,
THIS APPLIANCE TO RAIN OR MOISTURE.                                        and the like.
                                                                                                 2. Carts and Stands - The appliance
                          CAUTION                                            PORTABLE CART
                                                                                                    should be used only with a cart or
                  RISK OF ELECTRIC SHOCKS                                                           stand that is recommended by th
                        DO NOT OPEN                                                                 manufacturer.
                                                                                                 3. An appliance and cart combination
 CAUTION :TO REDUCE THE RISK IF ELECTRIC SHOCK, DO NOT                                              should be moved with care. Quick
          REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS                                         stops, excessive force, and uneven
          INSIDE.                                                                                   surfaces may cause the appliance
          REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.                                           and cart combination to overturn.
                                                                                  Figure 2       4. Wall or Ceiling Mounting - The appli-
          THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE
          PRESENCE OF UNINSULTED "DANGEROUS VOLTAGE"                                               ance should be mounted to a wall or
          WITHIN THE PRODUCT'S ENCLOSURE THAT MAY BE                        ceiling only as recommended by the manufacturer.
          SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF                  5. Ventilation - The appliance should be situated so that its
          ELECTRIC SHOCK TO PERSONS.                                       location or position does not interfere with its proper
                                                                           ventilation. For example, the appliance should not be situated
          THIS SYMBOL IS INTENDED TO ALERT THE USER TO THE
          PRESENCE OF IMPORTANT OPERATING AND MAINTENANCE                  on a bed, sofa, rug, or similar surface that may block the
          (SERVICING) INSTRUCTIONS IN THE LITERATURE                       ventilation openings; or, placed in a built-in installation, such
          ACCOMPANYING THE APPLIANCE.                                      as a bookcase or cabinet that may impede the flow of air
                                                                           through the ventilation openings.
                          CAUTION                                       6. Heat - The appliance should be situated away from heat
 TO PREVENT ELECTRIC SHOCK, DO NOT USE THIS POLARIZED AC
                                                                           sources such as radiators, heat registers, stoves, or other
 PLUG WITH AN EXTENSION CORD, RECEPTACLE OR OTHER OUTLET
 UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE                  appliances (including amplifiers) that produce heat.
 EXPOSURE.                                                              7. Power Sources - The appliance should be connected to a
                                                                           power supply only of the type described in the operating
                       LASER SAFETY                                        instructions or as marked on the appliance.
THIS UNIT EMPLOYS A LASER. ONLY QUALIFIED SERVICE PERSONNEL
                                                                        8. Grounding or Polarization - The precautions that should be
SHOULD REMOVE THE COVER OR ATTEMPT TO SERVICE THIS DEVICE
DUE TO POSSIBLE EYE INJURY.                                                taken so that the grounding or polarization means of an
                                                                           appliance is not defeated.
CAUTION : USE OF ANY CONTROLS, ADJUSTMENTS, OR PROCEDURES               9. Power - Cord Protection - Power-supply cords should be
OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS                  routed so that they are not likely to be walked on or pinched
RADIATION EXPOSURE.                                                        by items placed upon or against them, paying particular
                                                                           attention to cords at plugs, convenience receptacles, and the
CAUTION : TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF
PLUG TO WIDE SLOT, FULLY INSERT.                                           point where they exit from the appliance.
                                                                        10.Protective Attachment Plug - If the appliance is equipped with
ATTENTION : POUR EVITER LES CHOCS ELECTRIQUES, INTRODUIRE                  an attachment plug having overload protection. This is a
LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPON-                 safety feature. See Instruction Manual for replacement or
DANTE DE LA PRISE ET POUSSER JUSQU'AU FOND.                                resetting of protective device. If replacement of the plug is
                                                                           required, be sure the service technician has used a
                                                                           replacement plug specified by the manufacturer that has the
Important Safety Instructions                                              same overload protection as the original plug.
- All the safety and operating instructions should be read before       11.Cleaning - The appliance should be cleaned only as
  the appliance is operated.                                               recommended by the manufacturer.
- The safety and operating instructions should be retained for          12.Power Lines - An outdoor antenna should be located away
  future reference.                                                        from power lines.
- All warnings on the appliance and in the operating instructions
  should be adhered to.
- All operating and use instructions should be followed.
1. Water and Moisture - The appliance should not be used near
    water - for example, near a bathtub, washbowl, kitchen sink,




                                                                    2
   1. Safety Precautions
13.Outdoor Antenna Grounding - If an outside antenna is                 15.Object and Liquid Entry - Care should be taken so that objects
   connected to the receiver be sure the antenna system is                 do not fall and liquids are not spilled into the enclosure through
   grounded so as to provide some protection against voltage               openings.
   surges and built-up static charges. Article 810 of the National      16.Damage Requiring Service - The appliance should be
   Electrical Code, ANSI/NFPA 70, provides information with                serviced by qualified service personnel when:
   regard to proper grounding of the mast and supporting                    a) The power-supply cord or the plug has been damaged; or
   structure, grounding of the lead-in wire to an antenna-dis               b) Objects have fallen, or liquid has been spilled into the
   charge unit, size of grounding conductors,location of antenna-              appliance; or
   discharge unit, connection to grounding electrodes and                   c) The appliance has been exposed to rain; or
   requirements for the grounding electrode. See Figure 1.                  d) The appliance does not appear to operate normally or
                                                                                exhibits a marked change in performance; or
                                                                            e) The appliance has been dropped, or the enclosure
            EXAMPLE OF ANTENNA
            GROUNDING                            ANTENNA LEAD
                                                                               damaged.
                                                 IN WIRE
                                                                        17.Servicing - The user should not attempt to service the
                                                                           appliance beyond that described in the operating instructions.
                   GROUND CLAMP                                            All other servicing should be referred to qualified service
                                               ANTENNA DISCHARGE UNIT
                                               (NEC SECTION 810-20)        personnel.
                                                GROUNDING CONDUCTORS
                      ELECTRIC                  (NEC SECTION 810-21)
                      SERVICE
                      EQUIPMENT
                                         GROUND CLAMPS
                                     POWER SERVICE GROUNDING
                                     ELECTRODE SYSTEM
    NEC - NATIONAL ELECTRICAL CODE   (NEC ART 250 PART H)


14.Non-use Periods - The power cord of the appliance should be
   unplugged from the outlet when left unused for a long period
   of time.




                                                                        3
  2. Specifications
                                                  General specifications
                                                                        Power consumption                 Standby         2Watt
Power supply                       AC 110V or 120V or 127V / 60Hz                                         Operating       90Watt
Voltage ( Option )                 220V or 230V or 240V / 50Hz
                                                                        Dimensions (W x D x H) / Weight 360 x 380 x 70mm/ 6.0 kg


                                                    Front Amp. Section
                  POWER OUTPUT at 10% THD                                        at 1KHz, 6 ohms                        17W
              THD(TOTAL HARMONIC DISTORTION)                                       at 1KHz, 1W                          0.2%
           INPUT SEN. / Impedance @ 1KHz, 47K ohms                               VIDEO, TV/AUX                    500mV 30mV/47K
                   FREQUENCY RESPONSE             Large                             at 1KHz, 1W                      30Hz~30KHz
                                                  Small                             at 1KHz, 1W                     150Hz~30KHz
                 S/N RATIO, IHF-A WEIGHTED                                       VIDEO, TV/AUX                          70dB
             SUBWOOFER TURNOVER FREQUENCY                                                                               120Hz
                    CHANNEL SEPARATION                                                 1KHz                             55dB


                                                    Center Amp Section
              POWER OUTPUT at 10% THD                                            At 1KHz, 6 ohms                          17W
           THD(TOTAL HARMONIC DISTORTION)                                          At 1KHz, 1W                            0.2%
                S/N RATIO, IHF-A FILTER                                                1W                                 70dB
        FREQUENCY RESPONSE(Dolby Digital) : Small                                      1W                             135Hz~18KHz


                                                     Rear Amp Section
              POWER OUTPUT 10% THD                                               At 1KHz, 6 ohms                          17W
          THD(TOTAL HARMONIC DISTORTION)                                           At 1KHz, 1W                            0.2%
                S/N RATIO, IHF-A FILTER                                                1W                                 70dB
       FREQUENCY RESPONSE(Dolby Digital) : Small                                       1W                             150Hz~30KHz


                                                    Subwoofer Section
                POWER OUTPUT at 10% THD                                         At 100Hz, 8 ohms                         30W
                 FREQUENCY RESPONSE                                                   1W                              20Hz~150Hz
                  S/N RATIO, IHF-A Weight                                                                                70dB

                                                         Video Section
    Input Sen. / Impedance               Composite Video(Video)                          1Vp-p/75 ohm                       0.5 dB
                                           Composite 75 ohm                              1Vp-p/75 ohm                       0.5 dB
   Output Level / Impedance          S-Video(Y/C) 75 ohm(DVD only)                      1Vp-p/ 0.286Vp-p                    0.5 dB
       Color Bar 100%               Component Out(Y / Pb / Pr):Option                 1Vp-p/0.7Vp-p/0.7Vp-p                 0.5 dB
                                       G, R, B(Scart) Out : Option                   0.7Vp-p/0.7Vp-p/0.7Vp-p                0.5 dB
     Frequency Response                       Ref 500KHz                                                                 5Hz~5.7MHz
          Crosstalk                             @1MHz                                          45dB                         40dB
          S/N Ratio                               DVD                                          60dB


   FM Tuner Section (FM ANT Impedance : 75 ohms)                                  AM Tuner Section (AM Loop antenna)
                             USA Version         87.5~108.0MHz                                       USA Version           530~1710KHz
  Tuning Range                                                             Tuning Range
                           Europe Version        87.5~108.0MHz                                      Europe Version         522~1620KHz
    Scanning                 USA Version             100KHz                  Scanning                USA Version              10KHz
Frequency Interval         Europe Version             50KHz              Frequency Interval         Europe Version             9KHz
Usable Sensitivity,    S/N=30dB,USA Version       2uV(17.2dBf)
                                                                         Usable Sensitivity,    S/N=20dB,USA Version          54 dBu
    75 ohms           S/N=26dB,Europe Version     3uV(20.8dBf)
                                                                              75 ohms          S/N=20dB,Europe Version        54 dBu
                          Mono USA Version             70dB
 S/N Ratio @1mV         Mono Europe Version            70dB               S/N Ratio @1mV             USA Version               40 dB
  IHF-A FILTER           Stereo USA Version            65dB                IHF-A FILTER             Europe Version             40 dB
                        Stereo Europe Version          65dB

                                                                    4
3. Location of Users Controls
Front Panel
                                     [DHC-X100]




   1. STANDBY indicator
   2. STANDBY / ON button                       8. NEXT (     ) button
   3. DVD/VIDEO CD/MP3 CD/audio CD disc tray    9. FUNCTION button
   4. OPEN/CLOSE ( ) button                    10. Remote Control Sensor
   5. PLAY (   ) button                        11. Display
   6. STOP ( ) button                          12. MASTER VOLUME control
   7. PREV (    ) button                       13. PHONES jack




                                     [DHC-X150]



       ANDBY/ON
     ST




   1. STANDBY indicator
   2. STANDBY / ON button                       8. PLAY (   ) button
   3. DVD/VIDEO CD/MP3 CD/audio CD disc tray    9. STOP ( ) button
   4. Remote Control Sensor                    10. PREV (    ) button
   5. Display                                  11. NEXT (    ) button
   6. MASTER VOLUME control                    12. FUNCTION button
   7. OPEN/CLOSE ( ) button                    13. PHONES jack



                                          5
3. Location of Users Controls
Rear Panel



                                  S-VIDEO OUT
                                  (DVD ONLY)




  1. AUDIO IN jacks
  2. VIDEO IN jack                                   8. AM ANTENNA connector
  3. MONITOR OUT jack                                9. FM ANTENNA connector
  4. DIGITAL OUTPUT jack                            10. FRONT SPEAKER connectors
  5. S VIDEO OUT jack                               11. CENTER SPEAKER connectors
  6. SCART jack or COMPONENT VIDEO OUTPUT           12. WOOFER SPEAKER connector
     Y/Pb/Pr jacks(Optional)                        13. REAR SPEAKER connectors
  7. Power cord                                     14. SUBWOOFER output jack

Display




     1. Pro Logic indicator
     2. DOLBY DIGITAL indicator                     13. PLAY indicator
     3. DTS indicator                               14. PAUSE indicator
     4. DVD indicator                               15. TITLE indicator
     5. VCD indicator                               16. CHAPTER indicator
     6. MP3 indicator                               17. TRACK indicator
     7. SLEEP indicator                             18. DSP indicator
     8. REPEAT indicator                            19. STEREO indicator
     9. ALL indicator                               20. RANDOM indicator
    10. TOTAL indicator                             21. MUTE indicator
    11. REMAIN indicator                            22. PBC(Playback Control) indicator
    12. RDS indicator                               23. PLAYING INFORMATION display

                                                6
3. Location of Users Controls
Remote Controller
                                 1. STANDBY/ON button
                                 2. OPEN/CLOSE button
                                 3. MUTE button
                                 4. INPUT SELECTOR: DVD button
                                   / TV SYSTEM button
                                 5. INPUT SELECTOR: TUNER(FM/AM) button
                                 6. INPUT SELECTOR: VIDEO, TV/AUX button
                                 7. FAST REVERSE(FR) (           ) button
                                 8. SKIP PREV (         ) button
                                 9. SPEAKER SETUP button
                                10. CH LEVEL button
                                11. PLAY (     ) button
                                12. STOP(        ) button
                                13. MENU/RETURN button
                                14. PAUSE/STEP button
                                15. Number buttons
                                16. DISPLAY/FM MODE button
                                17. TEST TONE button
                                18. SUBTITLE button
                                19. SLOW button
                                20. A-B REPEAT button
                                21. ANGLE button
                                22. RANDOM button
                                23. DIGEST/RDS MODE button
                                24. MPX/PTY SEARCH button
                                25. SLEEP button
                                26. FAST FORWARD(FF) (            ) button
                                27. SKIP NEXT (         ) button
                                28. MOVE / / / /ENTER buttons
                                29. SURROUND MODE button
                                30. TITLE button
                                31. VOLUME / buttons
                                32. SET-UP button
                                33. GO TO/AUTO MEMORY button
                                34. DELAY TIME button
                                35. AUDIO button
                                36. ZOOM button
                                37. REPEAT button
                                38. PBC button



                         7
4. Connecting to Equipment
Connecting to TV




                     S-VIDEO OUT
                     (DVD ONLY)




Connecting to AUDIO & VIDEO




                                   S-VIDEO OUT
                                   (DVD ONLY)




                                                 8
4. Connecting to Equipment
Connecting to Speaker
 To prevent damage to circuits, never short-circuit the positive (+) and negative (-) speaker wires.
 Do not connect the speaker cable to the L and R connectors at the same time and do not connect more
 than one speaker to the same speaker connectors.




                                     S-VIDEO OUT
                                     (DVD ONLY)




                                                   9
5. Trouble Shooting Guide
Basic Operating
                  Insert AC Power Cord.




                    Is STANDBY LED on?           No


                                                    Check POWER
                           Yes                     SUPPLY circuit.
                                                  Check connection
                                                CN700, CW712, CW902
                     Turn Power on.




                       Is POWER on?              No



                           Yes              Check power supply circuit.




                  Does initial read work         No


                                                Check LASER circuit.
                           Yes                   Check focus circuit.
                                                    Check disc.
                                                Check protect circuit.


                       Does it paly?             No



                           Yes                     Check tracking
                                                   SERVO circuit




                  Does it output audio?          No



                           Yes


                           OK                    Check AUDIO circuit.




                                           10
 5. Trouble Shooting Guide
Mi-Com Circuit
                                             Push power on.




                                            Does DVD appear
                                                                     No
                                                at VFD ?



                                                  Yes                  Check Power.            No


                                          Does loading appear
                                  No
                                                at VFD ?                   Yes


                    Check connector                Yes                Check loader.
              No   CW701 if it normaly?                              Check MPEG PCB.
                                                                                          Check Power Supply Circuit.



                                             Does no DISC or
                           Yes            time appear at VFD ?       No


                                                                       Check power
                                                   Yes               supply circuit of         No
                                                                      regulator PCB.
                                          Check if DVD an Audio
    Recheck It.     Check MPEG PCB.
                                          Micom interface is OK.
                                                                            Yes                Refer to Power
                                                                                               Supply Circuit.



                                                                      Check Oscillator
                                                                        of XC750.
                                                                                               No



                                                                           Yes                  Replace XC750.



                                                                      Check if IC400
                                                                      Pin3 is work?            No



                                                                           Yes            Check DVD Reset control.



                                                                     Check if Connector
                                                                      CN703 are work?          No



                                                                           Yes                Check from Micom
                                                                                              to DVD interface.



                                                                      Check if IC750
                                                                                               No
                                                                      Pin72 is High?



                                                                           Yes                Check +5.0V line.



                                                                      Check if IC750
                                                                                               No
                                                                      Pin24 is High ?



                                                                            Yes            Check Power down line.



                                                                      Check if IC750
                                                                      Pin25 is High ?
                                                                                               No



                                                                            Yes


                                                                       Replace IC750       Check Protection Circuit.




                                                                11
5. Trouble Shooting Guide
Front Circuit
Insert AC Power Cord.




                                                                                                              1
      LED ON             No



                                                  Check if the                                           Check if the
        Yes                                                                 No                                                       No
                                                 CW700 is OK ?                                        POWER PART of the
                                                                                                        FRONT is OK.
    STANDBY ON
                                                       Yes                  Re connect it.                   Yes                     Refer to POWER
                                                                                                                                     SUPPLY circuit.

                                                  Check if the                                           Check if the
                                                 FRONT POWER                No                        IC750 PIN(22),(23)             No
      LED OFF            No                         is OK.                                                  is OK.

                                                                            Refer to POWER
                                                      Yes                                                    Yes
                                                                            SUPPLY circuit.
        Yes                                                                CW712 Pin(1) : 5V
                                                                                                           Refer to
                                                   Check if the                                                                   Refer to KEY-IN line
                                                                                                        MICOM circuit.
                                               IC750 OSC PIN wave-          No
 Does initial work ?    No                         form is OK.

                                                      Yes                   Replace XC750                     2
        Yes
                                                Check if the IC750          No
                                                  PIN(72) is OK.                                         Check if the
                                                                                                      POWER PART of the         No
                                                                                                        FRONT is OK.
                                                      Yes                   Refer to POWER
                                                                            SUPPLY circuit.                  Yes              Refer to Power
                                                                                                                              Supplycircuit.
                                               Check if the FL700           No
                                                  PINS are OK                                            Check if the
    Check if ALL
  BUTTONS are OK.
                         No          1                                                                IC750 PIN(14) (15)
                                                                                                            is OK.
                                                                                                                                No

                                                      Yes
                                                                                                                              Check if the
        Yes                                                                                                                VR700,HR714,HR715           No
                                                    Refer to              Check PATTERN and                  Yes
                                                                                                                                 is OK.
                                                 MICOM circuit.             RESOLDERING.
    Check if the
   VOLUME is OK.
                         No          2                                                                                  Yes



        Yes
                                                                                                           Refer to                              Replace VR700,
                                                                                                        MICOM circuit.                           HR714, HR715
   Check if the
 HEADPHONE is OK.         No



        Yes
                                                                                                         Check if the
                                                                                                        POWER is OK.                 No

    Check if the
                             No
  REMOCON is OK.
                                                                                                                                     Refer to Power
                                                                                                             Yes                     Supply circuit.
                            Check if the
                         POWER PART of the              No
        Yes                FRONT is OK.
                                                                                                         Check if the
                                                                                                         J700 PIN(4)                 No
                                  Yes                   Refer to Power                                     is High.
                                                        Supply circuit.

                             Check if the                                                                    Yes                  Check J700 circuit.
                        REMOCON waveform of             No
                           the IC750 PIN(2)


                                                         Check if the                                    Check if the
                                                                                   No                  HEADPHONE Jack                No
                                                      IC700 PIN(1) is OK.
                                                                                                           is OK.
                                   Yes
                                                             Yes                                             Yes


   Front PCB OK                  Refer to                                        Check RMC circuit.
                                                        Replace IC700                                  Check MAIN PCB             Replace H/P JACK
                              MICOM circuit.




                                                                                 12
5. Trouble Shooting Guide
Audio Block
          MAIN VOLUME &                                       REMOTE CONTROL
          CHANNEL Level
                                                                 Abnormal
            Abnormal




            Check if the
                                   No                         Check if the IC750      No
       IC300, IC310, IC400 is
                                                                 PIN2 is OK.
                OK.



                Yes                                                  Yes


        Refer to FRONT PCB        Refer to DAC IC310           Refer to MICOM          Refer to RMC




                                                              Subwoofer output
        H/P outout Abnormal
                                                                 Abnormal




            Checkif the                                           Checkif the
         IC310 PIN 26, 27          No                          IC310 PIN 26, 27       No
         waveform is OK.                                       waveform is OK.



                                  Refer to DAC IC310                                 Refer to DAC IC310
                Yes                                                  Yes



            Checkif the                                          Checkif the
          IC404 PIN 1, 7           No                           IC400 PIN 36          No
         waveform is OK.                                       waveform is OK.



                                Refer to H/P AMP IC404                               Refer to VOL IC400
                Yes                                                  Yes



                                                                 Checkif the
           Check if the
                                   No                            IC803 PIN 4          No
          H/P Jacknis OK.                                      waveform is OK.


                                  Replace H/P Jack                                 Refer to SW AMP IC803
                Yes                                                  Yes


            Refer to H/P
           Control circuit
                                                               Check if the SW        No
                                                                 Jack is OK



                                                                     Yes


                                                                      OK              Replace SW Jack




                                                         13
  5. Trouble Shooting Guide
 DVD Block
                         SOUND Abnormal




                        Check if the IC310      No
                             is OK.


                                              Refer to MPEG circuit.
                               Yes



                            Check if the
                        IC301, IC302, IC303     No
                               is OK.


                                                Check if the Micom
                               Yes               interface is OK.            No



                           Check if the
              No          SPK OUT is OK.
                                                       Yes

                               Yes


Refer to AMP circuit.          OK             Refer to MICOM circuit.   Replace to FRONT circuit.




VIDEO OUT Abnormal




                                                                                  OPEN/CLOSE Abnormal
Check if the VIDEO       No
   JACK is OK



                        Refer to VIDEO JACK
       Yes
                                                                                   Check if the FRONT
                                                                                                           No
                                                                                    CONTROL is OK.



Check if the CW610       No                                                                Yes              Check if CW712
       is OK                                                                                                                          No
                                                                                                                is OK.



                        Check if the IC600                                          Check if the IC750                             Refer to MICOM circuit.
                                                 No                                                        No
                           PIN(8) is OK                                                  is OK.



                                              Refer to MICOM circuit.                      Yes           Refer to MICOM circuit.
                               Yes

       Yes

                        Check if the IC600                                          Check if the CN703
                                                 No                                  cable is nomally.
                                                                                                           No
                           PIN(1) is OK




                               Yes                                                         Yes


                                                Replace to POWER                      Replace DECK
    Replace it.                OK                 Supply circuit.                      MECHA DVD
                                                                                                              Reconnect it




                                                                        14
6. DVD Program Download Method

INSERT THE UPDATE DISC INTO THE DISC TRAY, THEN THE DVD RECEIVER READS
THE DISC AND UPDATE THE FIRMWAFE ITSELF AS FOLLOWINGS.


@ INSERT THE UPDATE DISC.
 NO                 STATUS                       VFD            MONITOR       SET CONDITION

  1           STARTING UPDATE          DISC LOADING            LOADING        DOOR CLOSE

                                         TRK
  2        DETECT THE UPDATE DISC              000 0:00:00    ES6028.ROM      DOOR CLOSE

                                         TRK
  3            READ THE DISC                   000 0:00:00   WRITING/ERASE    DOOR CLOSE

                                         TRK
  4         COMPLETED THE READ                 000 0:00:00       DONE         DOOR CLOSE

                                         TRK
  5        COMPLETED THE UPDATE                000 0:00:00                    DOOR OPEN 1)


                    END
                                         TRK
                                                                             DOOR CLOSE : 2)
  6                                            000 0:00:00
                                                                             4 SEC


NOTE :
      1) AFTER DOOR OPEN, EJECT THE UPDATE DISC.
      2) AFTER COMPLETED, POWER OUT AND IN AGAIN.


CAUTION :
      WHILE DOOR OPEN, IF CD DOOR IS CLOSED BY TOUCH, OR POWER BUTTON
         IS PRESSED THEN FLASH MEMORY WILL BE ERASED.




                                                    15
7. Waveforms of Major Check Method
TEST POINT : DVD TEST DISC MDVD-W111 TRACK2 COLOR BAR
Audio Out Signal Waveform                        DAC Output Signal Waveform




Optical Output Audio Data Signal waveform        L/R Clock Data Waveform During Normal Play




Serial Data Output Waveform During Normal Play




                                            16
7. Waveforms of Major Check Method
TEST POINT : DVD TEST DISC MDVD-W111 TRACK2 COLOR BAR
Pr Output Data Waveform in Component Output




Pb Output Data Waveform in Component Output




Y Output Data Waveform in Component Output




                                             17
8. Internal Block Diagram of ICs
CS4360




BA4560F




LA7952




                         18
8. Internal Block Diagram of ICs
NJW1104
                                       80                                           51




                                81                                                          50




                           100                                                              31




                                       1                                            30




  LIN               Input Autobalance                        Center Mode                                         LOUT
                     Noise Sequencer
  RIN                Adaptive Matrix                                                                             COUT

                           L+R                                                                                   ROUT

                           L-R
                                                                                     Modified
                                                                Delay
EXTIN                                                                                 B-NR                       SOUT
                                                                             7KHz
                                                                              LPF

                      MCU Interface                     SW. Controller                     ADD/SUB
                                                                                              .
             DATA
                    SCK
                          REQ




                                            AUX1-10



                                                      MD1
                                                      MD2




   Pin No.   Pin Name                Pin No.          Pin Name          Pin No.     Pin Name         Pin No.   Pin Name
      1        RLC3                    26                NC               51            NC             76        DBIN
      2        RLC8                    27                NC               52            NC             77        DBC1
      3        RLC6                    28                NC               53            NC             78        DBC2
      4         LLI                    29                NC               54            NC             79        DBC3
      5        LBPF                    30                NC               55            NC              80       LOUT
      6         RLI                    31                VSS              56            NC              81       ROUT
      7        RBPF                    32               AUX1              57            NC              82       COUT
      8          LT                    33               AUX2              58            NC             83        SOUT
      9          RT                    34               AUX3              59            NC             84        CMC
     10         LIN                    35               AUX4              60            NC             85       SMRO
     11         RIN                    36               AUX5              61            NC              86       SMRI
     12       HOLDC                    37               AUX6              62           VDD              87      EXTIN
     13        NGC3                    38               AUX7              63           VCC             88        VREF
     14        NGC2                    39               AUX8              64         SDOUT             89        IREF
     15        NGC1                    40               AUX9              65         LPF1IN            90        PSC3
     16        GND                     41              AUX10              66        LPF1OUT            91        PSC6
     17        MD1                     42                RST              67         OPA1IN            92        PSC2
     18        MD2                     43             TESTCNT             68        OPA1OUT             93       PSC5
     19         VSS                    44               DATA              69           CC1              94       PSC1
     20         NC                     45               SCK               70           CC2             95        PSC4
     21         NC                     46               REQ               71         OPA2IN             96       RLC5
     22         NC                     47               CLK2              72        OPA2OUT             97       RLC2
     23         NC                     48               CLK1              73         LPF2IN             98       RLC1
     24         NC                     49               VDD               74        LPF2OUT             99       RLC4
     25         NC                     50                NC               75          LPFIN            100       RLC7

                                                                 19
8. Internal Block Diagram of ICs
TDA7265/7269A
                                                                                       +VS


                                                                                                                 1000



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