Service Manuals, User Guides, Schematic Diagrams or docs for : ONKYO Audio SKW50 Onkyo-SKW50 actsub

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Onkyo-SKW50 actsub


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                                                            SKW-50

                                                   Ref. No . 3699
         R   SERVICE MANUAL                          072001


POWERED SUBWOOFER
   MODEL SKW 50
         SKW-50




             MDD       120V AC,60Hz




SAFETY-RELATED COMPONENT WARNING!!


   COMPONENTS IDENTIFIED BY MARK         ON THE
   SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE
   CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
   REPLACE THESE COMPONENTS WITH ONKYO
   PARTS WHOSE PART NUMBER APPEAR AS SHOWN
   IN THIS MANUAL.


   MAKE LEAKAGE CURRENT OR RESISTANCE
   MEASUREMENTS TO DETERMINE THAT EXPOSED
   PARTS ARE ACCEPTABLY INSULATED FROM THE
   SUPPLY CIRCUIT BEFORE RETURNING THE
   APPLIANCE TO THE CUSTOMER.
                                                                                                                   SKW-50


SPECIFICATIONS



Type                 Bass-reflex with built-in power            Speaker                   20-cm woofer
                     amplifier                                  Power supply              AC 120V,60Hz
Use                  For superbass-range                        Power consumption         70W
                     reproduction                               Dimensions(W x H x D)     235 x 490 x 409(mm)
Frequency response   30-200Hz                                                             9-1/4" x 19-5/16" x 16-1/8"
                     (at maximum crossover frequency)           Weight                    12.5kg
Crossover frequency  50-200Hz(variable)                                                   27.6lbs
Maximam output power 60W
Input impedance      4.7kohm                                    Accessory                 Pin connector cable(1pc.)
                     (for speaker-level input terminals)                                  Spacers(4pcs.)
                     12kohm                                                               Instruction manual
                     (for low-level inputjacks)                 Other                     AUTO STANDBY ON/OFF
                                                                                          (with CANCELLING Switch)
Sensitivity
  Speaker-level         2V
  Line                45mV




SERVICE PROCEDURES
                          1. Replacing the fuse

                                        This symbol located near the fuses indicates that the
                          fuse used is fast operating type. For continued protection against
                          fire hazard, replace with same type fuse. For fuse rating refer to
                          the marking adjacent to the symbol.

                                      Ce symbole indique que le fusible utlise est a rapide.
                          Pour une protection permanente, n'untiliser que fusibles de
                          meme type. Ce darnier est la qu le present symbol est
                          appse.

                          CIRCUIT NO.     PART NO.      DESCRIPTION
                          F901            252159 or     2A-UL/T237,Fuse or
                                          252253        2A-T/UL-ST2
                                                                                                              SKW-50

PANEL VIEW




             Frequency adjusting knob                                          Output level adjusting knob


                                                         POWERED SUBWOOFER

                                                 FREQUENCY               OUTPUT LEVEL




                                             50 Hz             200 Hz    MIN        MAX




                                                                               POWER




                                                            Power switch and indicator




                                     Speaker-level input terminals
                                                 SPEAKER LEVEL                          LINE   AUTO STANDBY
                                                                                       INPUT
                                                     +   R _        _   L +
                                       INPUT
                                         FROM
                                  AMP/RECEIVER
                                                                                    L
                                                                                  (MONO)

                                                                                               OFF     ON
                                     OUTPUT                                         R
                                   TO SPEAKERS
                                                     +   R _       _    L +




                            Speaker-level output terminals

                                                 Low-level input jacks

                                                                    Auto standby switch




                                                                  To AC outlet
                                                                                                                                                                SKW-50

REAR PANEL CONNECTION




                                                                                                                               Connection with amplifier's
                                                                                                                               special subwoofer jack




                                                     SPEAKER LEVEL                          LINE   AUTO STANDBY
                                                                                           INPUT
                                                      +    R _       _    L +
                                           INPUT
                                             FROM
                                      AMP/RECEIVER
                                                                                          L
                                                                                        (MONO)

                                                                                                   OFF     ON
                                                                                                                  If your receiver(amplifier)is equipped with
                                          OUTPUT
                                      TO SPEAKERS
                                                      +    R _       _    L +
                                                                                          R
                                                                                                                  a monaural subwoofer jack,connect it to the
                                                                                                                  SKW-50 Left (LINE INPUT)jack.




                                                                                                                            Connection with a preamplifier
              Preamplifier
                 Output terminals
                                  L


                                  R




                       SPEAKER LEVEL                          LINE       AUTO STANDBY
                                                             INPUT
                        +   R _       _   L +
             INPUT
               FROM
        AMP/RECEIVER
                                                            L
                                                          (MONO)

                                                                         OFF     ON
           OUTPUT                                           R
        TO SPEAKERS
                        +   R _       _   L +




                                                                                                                        Connection with receiver's(amplifier's)
                              + R _                  _ L +
                                                                                                                        speaker terminals



                            SPEAKER LEVEL

                              + R _                  _ L +

               INPUT
              FROM
       AMP/RECEIVER




            OUTPUT
        TO SPEAKERS
                              + R _                  _ L +
                                                                                                                                                                                                SKW-50

EXPRODED VIEW                                                                                                                                                     A13
                                                                                                                                                         A12


                          A18
                  A17




                                                                                                                                                                             A3
                                                               SP
                                                                 EA
                                                    INPU              KE
                                         AM                             R LE
                                              P/R FR
                                                 EC OM     T                   VE
                                                   EIV                           L


                                                                                                                                                                                     U3
                                                       ER
                                         TO   OU
                                               SP   TP
                                                    EA
                                                      KE
                                                         UT
                                                        RS
                                                                                         LIN
                                                                                        INPUE
                                                                                             T
                                                                                                     AU
                                                                                                          TO
                                                                                                               STA




                                                                                                                                    A6
                                                                                                                  ND
                                                                                                                       BY

                                                                                            L


                                                                                                                                                                                           A8
                                                                                      (MO
                                                                                            NO
                                                                                                 )




                                                                                                                                          Q952
                                                                                            R
                                                                                                     OF
                                                                                                          F

                                                                                                                        ON

                                                                                                                                                        U2
                                                                                                                                              Q951       A3
                        B25              A15




                                                                                                                                                                                    Q516
                                                                                                                                                                                  Q541
                                                                                                                                                                                 A1
                        A20

                                                                                                                                                A23
                        P901                                                         A14
      B14                                                                                                                                 U1                    Q515
                                         A16
                                                                                                                                                 F901
                                                                                                                                                               R602

                                                                                                                                           U5
                                                                                                                                                               T901
            B28
                                                                                                                                   A19


                                                                                                                                                                                     B17
                   B14
                   B6



                                                                                                                               B19 B20
                                                                                             U9


                          B8                             U4



                                                                                                                                    B27        A22
                                                                                                                                   U8
            P535
                                                                                                                                   A11
                                                                                                                             B16

                                    U7
                                              B24
                               B2

                                                                                                                                                                           B18




                                                                                                                                                          B23




                                                                                                                                                                      B3



                                                                                                                                                                                                 B10
                                                                                          SKW-50

PARTS LIST
EXPLODED VIEW   REF NO.   PART NO.        DESCRIPTION
                A1        27160467        Heat sink
                A3        27130745        Bracket
                A6        27141661        Retainer
                A8        28184777        Cover
                A11       29-100-076-21   Cushion
                A12       28141475        t2X5X160,Cushion
                A13       28141476        t2X5X80,Cushion
                A14       27122895A       Rear panel
                A16       830440109       4TTC+10C(BC),Self tapping screw
                A17       28141473        t2X5X415,Cushion
                A18       28141474        t2X5X195,Cushion
                A19       28141334        Cushion
                A20       27301941        Cord,bushing
                A22       260208          Binder
                A23       223021          TBM-51W 9043,Isolation sheet
                B2        W20170A         Speaker ass'y
                B3        AZ200003-01     Cabinet ass'y
                B7        31-000-038-61     105- 115 L=195,Paper duct
                B8        29-100-076-11   Cushion
                B9        51-000-119-01   Box ass'y
                B10       AZ000084-01     Base ass'y
                B14       54-000-122-01   VHZ 30t*150*150,Sound absorbent
                B16       58-000-301-01   Cover
                B17       57-000-581-01   Panel
                B18       58-000-302-01   Foot
                B19       58-000-303-01   Knob(A)
                B20       58-000-304-01   Knob(B)
                B23       70-015-450-01     4*50,Self tapping screw
                B24       70-015-414-01     4*14,Self tapping screw
                B27       71-079-800-03   Nuts
                F901      252159 or       2A-UL/T-237,Fuse
                          252253          2A-T/UL-ST2,Fuse
                P535      2009990611UL    NSAS-2P0833,Socket
                P901      253272HIT       AS-UC-6#18,Power supply cord
                Q515      2203063 or      2SC5198-O,Transistor
                          2203062 or      2SC5198-R,Transistor
                          2202524 or      2SC4468-Y,Transistor
                          2202526 or      2SC4468-P,Transistor
                          2202523         2SC4468-O,Transistor
                Q516      2203053 or      2SA1941-O,Transistor
                          2203052 or      2SA1941-R,Transistor
                          2202514 or      2SA1695-Y,Transistor
                          2202516 or      2SA1695-P,Transistor
                          2202513         2SA1695-O,Transistor
                Q541      2202104 or      2SC3423-Y,Transistor
                          2202103         2SC3423-O,Transistor
                Q951      2202754         2SD1266-P,Transistor
                Q952      2202764         2SB941-P,Transistor
                R602      4000144         PTH9M04-2.2K,Thermistor
                T901      2301487         NPT-1396D,Power transformer
                U1        1W204565-2D     NAAF-6865-2D,Main PC board ass'y
                U2        1W204566-2D     NAAF-6866-2D,Input/Output PC board ass'y
                U3        1W204567-2D     NAAF-6867-2D,OP amplifier PC board ass'y
                U4        1W204568-2D     NAAF-6868-2D,Power supply PC board ass'y
                U5        1W204569-2D     NAAF-6869-2D,Power transformer PC board ass'y
                U7        1W204571-2D     NAAF-6871-2D,Volume PC board ass'y
                U8        1W204572-2D     NAAF-6872-2D,PC board for holder
                U9        1W204573-2D     NAAF-6873-2D,Standby LED PC board ass'y
                B25       70-015-420-02   4 x 20,Self tapping screw
                                                                                                                                                                                                             SKW-50


BLOCK DIAGRAM
 SPEAKER
                                                                     NAAF-6866-2          NAETC-6870-2
 INPUT/OUTPUT

                                                                                                                                                                CUTOFF FREQUENCY
                                                                                                                                                                VOLUME
                   -19dB

                                           -6dB
                                                                                                                                                                                                             SPEAKER
                                           R321
                                                                                                                                                                                                              5OHM




                                                                                                     LEVEL
                    BAL                    4.7K                                                                              +21dB                                                         +28dB




                                                  R319

                                                         4.7K
                                    Q301                                 Q302




                                                                                              R328
                                                                        (2/2)
                                                                                                                                                LPF                         LPF
                                                                                                                              Q303                                                      POWERAMP
                                                                                                                                                12DB/OCT                   12DB/OCT
                                                                                                                                                 50-200HZ                  50-200HZ
                                                                                                                      NAETC-6867-2




 RCA IN
                           +9.5dB



                           Q302
                           (1/2)
            C366




                                                                            AUTO_STANDBY                                                                                      THERMAL
                                                                                                                                               MUTE
                                                                                  ON/OFF                                                                                      PROTECTION
                                                                                CIRCUIT                             AUTO_                      CIRCUIT                        CIRCUIT
                                                                                                                    STANDBY
                                                                                                                    CANCEL SW


                                                                                                                    NAAF-6866-2
                                                                                                                                                                                           NAAF-6865-2


                                                             +5.6V                                                                      D931
                                                                                                                                                                          NASW-6868-2




                                                                                                                                C931
                                                         1




                                                                                                                      D933




                                                                                                                                        D932
                                                                           Q951
                                                         +14.4V
                                                                       O    G I
                                                         1                                                                                               T901
                                                                                       Q952                                                       POWER TRANS
                                                         -14.4V
                                                                                   O    G I
                                                         1                                                                                                                                      MDD AC120V
                                                                                                                             D911
                                                             +B                                                               D_ARRAY

                                                         1                                                                                                                              AC IN
                                                                                                             C911




                                                             GND

                                                         1
                                                                                                             C912




                                                                                                                                                                       NAPS-6869-2
                                                         -B

                                                         1
                                                                                                                                                                                                                                                                                                                                                                                       SKW-50

SCHEMATIC DIAGRAM                                                                                                                               U2 Input/Output PC board
                                                          R318                                                                                                     NAAF-6866-2
                                                                                                                                                                                                                                     NAETC-6870-2
                                                                                                                                                                                                                                                                                                                                 U7 Volume PC board
                                                          18K




                                                                                                                                                                                                                                                                      20KA
                                                                                                                                                                                                                                              R328
                                                                                                                                                                                                                                              (2/2)
                                                          C306
                          C305                                                                                                                                                   R323




                                                                                                                                                                                                                                                               R328
                                                                                                                                                                                                                                      LEVEL




                                                                                                                                                                                                                                                                      (1/2)
  INPUT          R 3 0 54 7 / 1 6                         101                                                                                                                       22K
                                        2                                         R319          C320                                   R322                              4
                 12K                               Q302                                                                                                                        M5218
                                                                     1            4.7K                                                   22K                 6                                                                                  P304B
                                                                                                47/16                                                               Q302
                 R306                   3                                                                                                                                                7
          P301




                                                          M5218
                                                                                                  R326                                                       5           8
                 12K
                                                                                                  100K
                  C366                                                                                                                                  R324                                                                                    470                                               P304A
                                                                                                                                                                                                                                                                                                                     U3 OP amplifer PC board




                                                                                                                                                                                    220/16
                                                                                                                                                                         C955
                                                                                                                                                         0                                                                                     R346




                                                                                 R317
                  223Z



                                                                         5.6K
                                            C315
                              102K




                           R307                              R301                       C301                                                                                                    R327




                                                                                                                                                                                    220/16
                                                                                                                                                                        C956
                                                                                                                                                                                                100K                                                                                              5
                           100                               100K
                                            R311
                                 4.7K




                                                                                        47/16                                                                                                                                                          C340                                                                                                                                             R355
      SP LEVEL                                                                                                                                                                                                                                                         C322                                         7
                                                                                                                                                                                                                                                       0.1                                                Q303
                                                                                        C302




                                                                                                                                                                                                             JL303A
                           R309                              R303                                                                                                                                                                                                     47/16                       6                                                                                                     2.2K




                                                                                                                                                                                                                                     JL303B
INPUT/OUTPUT
                           100                               100K                                                                                                                                                                                                                                            M5218




                                                                                                                                                                                                                                                              C339
                                            R313



                                                           C317
                                                   102K




                                                                                                                                                                                                                                                                                   R329
                                 2.2K




                                                                                        47/16




                                                                                                                                                                                                                                                                                            47K
                                                                                                                                                                                                                                                        0.1
                                                                                                                                                                                                                                                                                                             R331
                                                                                                                                                                                                                                                                                                                                                                                     R349
                                                                                                                                                                                                                                                                                                              10K
                                                                                                                                                                                                                                                                                                                                                                                      47K
LCH
                                            R314

                                                   C318

                                                           102K




                                                                                                                               8M 5 2 1 8
                                 2.2K
                    P302




                                                                                                          5
                                                                                                                                                7                                                                                                                                                  R330
                           R310                              R304                                                         Q301
                                                                                                           6                                                                                                                                                                                          1K                                        3          8
                           100                               100K
                                            R312
                                 4.7K




                                                                                                                               4                                                                                                                                                                                                                                      1
                                                                                                                                                                                                                                                                                                                                                      Q303
                           R308                              R302                                                             5.6K                                                                                                                                                                                                              2
RCH
                           100                               100K                                                             R315
                                            C316
                              102K




                                                                                                                                                                                                                                                                                                                                                           4
                                                                                                        R316
                                                                                                                                                                                                                                                                                                                                      R336                     M5218
                                                                                                        10K                                                                                                                                                                                                                             0
                                                                                                                                M5218
                                                                                                          3
                                                                                                                                                 1      R321
                                                                                                                          Q301
                                                                                                           2                                            4.7K

                   A U T O P O W E R C A N C E LS W
                                                                                                                       R320
                                                                                1K
                                                                                                                         10K
                                                                          R371
                                                                                                                                                                                                                                     P501
                                                                         R372
                                                                  8.2K




                                                                                                                                                                                                                                                                                                                 R505             R506
                                                                                                                                                                                                                                                                                                                                                                           R511
                                                                                                                                                                                                                                                                                                                                                                                                          Q509
                                 S301




                                                                                                                                                                                                                                                                                                                  1K               1K                                        82
                                                                                                                                                                                                                                                                                                             (1/4W)              (1/4W)                                   (1/4W)                        2SA949-Y
                                                                                                                                                                                                                                                                                                                                                          37.9V
                                                                                                                                       JL953B

                                                                                                                                                                                                                                                                                                                                                                            Q505
                                                                                                                                                                                                                                                                                                                                                                          2SA949-Y
       U1 Main PC board                                                                                                                                                                                                                                                                                                                              37.9V

                                                                                                                                       JL953A
      NAAF-6865-2
                                                                                                                                                                                                                                                                                                               Q501              Q502
                                                                                                                                                                                                                                                                                                            2SC1775              2SC1775
                                                                                                                                         Q951                           R951
                                                                                                                                                                                                                                                          C501                R501                    0                                                         C505
                                                                                                                      14.4             2SD1266               37.6        47      (1/4W)
                                                                                                                                                                                                                                                        220/6.3                   1K                                                                            020
                                                                                                                     220/16




                                                                                                                                                                 15.0                                                                                                                                                             -0.6
                                                                                                          C953




                                                                                                                                                                                                                                                         C502                     R502            C503                                                          R507
                                                                                                                                                                                                                                                                                                                                                                                                          R515
                                                                                                                                                                                                                                                         151                       33K             151
                                                                                                                                                                        R953                                                                                                                                                                                    33K                                        12K
                                                                                                                                                                        6.8K(1/2W)                                                                                                                               R521             R522
                                                                                                                                       220/16
                                                                                                                                C951




                                                                                                                                                                                                                                                                                                                  220             220                                        Q507
                                                                                                                                                                                                                                                                                                                                                                          2SA949-Y
                                                                                                                                                                  D951                                                                                                                                                                                                                                   R516
                                                                                                                                                                 MTZJ15C                                                                                                                                                                             R509                                                 12K
                                                                                                                                                                                                                                                                                                                                R503                              0
                                                                                                                                                                                                                                                                                                                                                      330
                                                                                                                                                                                                                                                                                                                                5.6K                                                            2SC2229-Y
                                                                                                                                                                                                                                                       R615
                                                                                                                                                                                                                                                       12K                                                 -37.8V                                               R508                       -37.9V
                                                                                                                                                                                                                                                                                                                                Q503
                                                                                                                                220/16




                                                                                                                                                                   D952                                                                               (1/2W)                                                                                                     47
                                                                                                                                 C952




                                                                                                                                                                                                                                                                                                                                                     R527
                                                                                                                                                                  MTZJ15C                                                                                                                                                                                      (1/4W)                                    Q510
                                                                                                                                                                                                                                                                                                             Q504                                     1K
                                                                                                                                                                        R954                                                                                                                                                   2SC2240
                                                                                                          220/16




                                                                                                                                                     -15.0                                                                                                     C527                                                            -38.4V
                                                                                                           C954




                                                                                                                                                                        6.8K(1/2W)                                                                                                  R510                                                                                                      Q506
                                                                                                                                                                                                                                                               47/50                 22K                                                                                                   2SC2229-Y
                                                                                                                                                                                                                                                                                                            2SC2240                                  C504
                                                                                                                                                                                                                                                                                                                                                                                                                      R
                                                                                                                                                                                                                                                                                                                               R504                                                         R512
                                                                                                -14.4                                                        -37.6                                                                                                                                                                                  470/6.3
                                                                                                                                                                                                                                                               D615                                                             270                                                           82
                                                                                                                                                                        R952                                                                                  1SS133                                                                                                                        (1/4W)                   (1
                                                                                                                                        Q952
                                                                                                                                       2SB941                           47(1/4W)




                                                                                                                                                                                                                                                                                                                                5.6                                                 Q604
                                                                                                                                                                                                                                                                                          5.4
                                                                                                                                                                                                                                                                                                                                                                          DTA124ES
                                        C621
                                     10/50                                                                                                                                                                                                                                                                              Q606                                                                            5.6
                                                                                                                                                                                                                                                                                                                    2SA933S-S             4.9                                          Q603                     R60
                                                                                                                                                                                                                                                                                                                                                                           P604
                                                                                R621                                                             8                                                                                                                                                                                                                                                               100
                                                                                                                               5                   



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