Service Manuals, User Guides, Schematic Diagrams or docs for : DENON Personal Audio System Personal Audio System Denon - D-AJ03 Схема D-AJ03 Ver.1

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Схема D-AJ03 Ver.1


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                                                                      For U.S.A. & Canada model


                                                                                       Ver. 1
                                SERVICE MANUAL
                           MODEL                      D-AJ03
                             PERSONAL AUDIO SYSTEM




For purposes of improvement, specifications and
design are subject to change without notice.



Please use this service manual with referring to                                  ,
the operating instructions without fail.



Some illustrations using in this service manual are
slightly different from the actual set.




                       16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN


                                                                                      X0178V.01 DE/CDM 0307
                                              D-AJ03   2

SAFETY PRECAUTIONS

LEAKAGE CURRENT CHECK



LASER RADIATION




                                  500V


                                         1M


(1)




(2)




                            (1)

                            (2)




                        2
                                                                                                        D-AJ03                 3


DISASSEMBLY
(Follow the procedure below in reverse order when reassembling)

1. Rear Cover & Front Panel
1) Remove 14 rear screws 1 and 4 (E3: 2) bottom screws
    2 on the Rear Cover.
2) Disconnect connectors and wire 3 ~ 7 on the Front Panel.                                                            1
   The Rear Cover and Front Panel can be detached
   respectively.




                                                                                                                               1




                                                                                              2

                                                                                                        1




             4
      5P Connector                                                6 11P Connector

                                                                      7 1P Earth Lug




                               5
                          8P Connector

                                        12P Connector

                                                                                          8
2. Main P.W.B.                                                                                              8
1) Remove 5 screws 8 .                                                              FFC
                                                                   Connectors
2) Disconnect 2 FFCs, 8 connectors on the Main P.W.B.
                                                                                                                3P Connector


                                                  Main P.W.B.




                                                                                                  FFC




                                                              Connectors




                                                              3
                                                                                           D-AJ03    4

3. CD Mecha. Chassis
1) Remove 4 each screws 10 and 11 i from the front side to
                          i       i
   detach the CD Door Lens and CD Door Bracket.
2) Remove 6 screws 12  and take off the Main Chassis.
                    i


                                                                          12 
                                                                          i




                                                                                Main Chassis




                                            11 i
                                            i
                        CD Door Bracket


                           CD Door Lens

                                               i
                                               10                  11 i
                                                                   i

                                                             i
                                                             10
4. CD Mecha.
1) Remove 4 screws 13 fixing the Bracket.
                   i
2) Detach the CD Mecha. upward as shown to the arrow                                            i
                                                                                                13
   direction.


                                                                  i
                                                                  13




                              Rubber
                              (Green)              Collar
                                                   (White)




                                              Rubber
                                              (Green)

      Rubber
      (Blue)




                                                             4
                                                               D-AJ03            5


                               Speaker
5. Speaker Box (L & R)         Box (L)
1) Remove 4 screws 14 .
                    i
2) Disconnect 2 connectors.




                                                                             Speaker
                                                                             Box (R)



                                   i
                                   14




                                                         i
                                                         14

6. Tuner P.W.B.
1) Remove 2 screws   i
                     15   .




                                                              Tuner P.W.B.




                                                               i
                                                               15


7. Power P.W.B.
1) Remove 6 screws 16 .
                    i
2) Disconnect 1 connector.


                              Power P.W.B.




                              i
                              16




                                        i
                                        16   Connector




                                        5
                                                                                                                                                                 D-AJ03                      6


ADJUSTMENT
     TUNER SECTION
     Connections and adjustment point
                                                                              Modulation frequency: 400Hz
                                                              AM SG           Modulation factor: 30%


                                                                        Modulation frequency: 1kHz
                                          Test loop antenna             L+R: 90% (67.5kHz Dev.)
                                                                        Pilot: 10% (7.5kHz Dev.)
                                                                        75kHz Dev.: 100%
                             60cm

                                                                         FM stereo modulator

                                                                                                    75 ohms
                                          Loop antenna                                              Coaxial Cable
                                                                                   FM SG




                                                                                                                            Rear Panel Side

                                                                    Antenna Terminal        AM          G           FM



                                                      To TP




                                        Digital Voltmeter                      TUNER PWB                     TC401
                                                                                                     R425

                           To Output Terminal                                                T403                    T402

                                                                                                         R419
                                                                                            T401

                                         Distortion Meter
                                                                                            T404
                           To Output Terminal




                                       Separation Meter or
                                       Electronic Voltmeter


FM ALIGNMENT (BAND BUTTON: FM, AUTO)
                                                                            Input                                                  Output
       Alignment     Tune-in Point
Step                                    Measuring                                                                        Measuring                    Align Part     Set Value         Remarks
          Item     (Channel Setting)                   Frequency           Level       Modulation       Connect to                      Connect to
                                        Equipment                                                                        Equipment
        FM DC                                                                            1 kHz            FM Ant           Digital     Both Leads                                   Align with Mono
 1                     98 MHz             FM SG         98 MHz            60 dB                                                                         T404            20mV
        Balance                                                                        75 kHz dev        Terminal        Voltmeter        of R425                                  Modulation Signal



AM ALIGNMENT (BAND BUTTON: AM)
                                                                              Input                                                 Output
       Alignment     Tune-in Point
Step                                      Measuring                                                                         Measuring                   Align Part     Set Value        Remarks
          Item     (channel Setting)                        Frequency         Level        Modulation       Connect to                   Connect to
                                          Equipment                                                                         Equipment
                      E3:520 kHz                                                                                                                          T403       E3: 1.0



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