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aiwa_xrm11-m36_nopower


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                                                                                                       1/2


                          Service Technical Information
  MODEL NO.
              XR - M11 / M12 / M22 / M33 / M34 / M36


  SUBJECT
              No power                                                     REF.No. :G - A0 - 034 - E0

                                                                           DATE     :01. JUN . 2000


   It is reported that "No power" due to defects in chip capacitors occur in the above model.
   To correct the corresponding trouble, use the table given below.


   Short circuits on the chip capacitors cause the following trouble.
   Check the corresponding terminal voltages and correct the trouble
   (See Fig -1,2 for the locations of the respective chip conveyors):

  No               SYMPTOM                       Normal voltage                   Defective chip
                                                                                  capacitor Ref. No.
   1   Although the Stand -by          The voltage at Pin3 of IC301 must be       C316 on the FRONT
       LED is activated, power         3.15V in ECO mode (Only the LED is         P.W.B
       does turn on                    activated when Power is off)
                                       The voltage at Pin74 of IC301 must be      C317 on the FRONT
                                       4.99V in ECO mode (Only the LED is         P.W.B
                                       activated when Power is off)
                                       The voltage at Pin16 of IC301 must be      C329 on the FRONT
                                       4.99V in ECO mode (Only the LED is         P.W.B
                                       activated when Power is off)
   2   Although the demon              The voltage at Pin5 of IC301 must be       C338 on the FRONT
       -stration Display appears,      0V during demonstration with Power off     P.W.B
       Power does turn on              The voltage at Pin6 of IC301 must be       C339 on the FRONT
                                       0V during demonstration with Power off     P.W.B
   3   The power relay alternates      The voltage at the base terminal of        C229 on the MAIN
       betweeen ON/OFF atates          Q213 must be 0V in Power -saving           P.W.B
       with the Standby LED on         mode (Only the LED is activated when
                                       Power is off)
                                       The voltage at the base terminal of        C230 on the MAIN
                                       Q213 must be 0V in Power-saving            P.W.B
                                       mode (Only the LED is activated when
                                       Power is off)




            Ref.             Parts Code                Description                       Remarks
   C316,C338,C339         87- 010- 197- 080      CAP,CHIP 0.01 DM                           -
     C317,C329            87- 010- 198- 080        CAP,CHIP 0.022                           -
     C229,C230            87- 012- 156- 080     C- CAP,S 220P- 50 CH                        -


   G    R             Code No.                Access Code            Modified Ser. No.    Parts Schedule
   -    -                -                         -                        -                      -
                                                                      2/2




Fig - 1 Schematic diagram of the M -COM. circuit on the FRONT P.W.B




          Fig- 2 Schematic diagram of the power amplifier
                 circuit on the MAIN P.W.B



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