Kenwood SW-21HT Service Manual
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Kenwood SW-21HT Service Manual

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POWERED SUBWOOFER
SW-21HT
SERVICE MANUAL
Front view
SUBWOOFER
(T19-0527-08)
COPYRIGHT © 2011 Kenwood Corporation of Japan, Limited
Accessories
RCA CABLE (x 1)
AC CORD (x 1)
(E30-7438-08)
(E30-7421-08)
(E)TYPE
5
KA016<Rev.001>
2011
SERVICE MANUAL
Rear view
REAR COVER
(A80-4655-08)
AC CORD (x 1)
(E30-7437-08)
(X)TYPE
This product complies with the RoHS directive for the European market.
©
2011-5 PRINTED IN JAPAN
B53-4098-00
Top view
POWER KNOB
(K29-8820-08)
AUTO POWER SAVE SWITCH
(S62-0131-08)
RCA JACK
(E63-1463-08)
AC PLUG
(E35-4160-08)
This product uses Lead Free solder.
KA016<Rev.001>
VOLUME KNOB
(K29-8821-08)

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Summary of Contents for Kenwood SW-21HT

  • Page 1 AUTO POWER SAVE SWITCH (S62-0131-08) RCA JACK (E63-1463-08) AC PLUG (E35-4160-08) SUBWOOFER REAR COVER (T19-0527-08) (A80-4655-08) COPYRIGHT © 2011 Kenwood Corporation of Japan, Limited Accessories RCA CABLE (x 1) AC CORD (x 1) AC CORD (x 1) (E30-7438-08) (E30-7421-08) (E30-7437-08) (E)TYPE (X)TYPE This product uses Lead Free solder.

  • Page 2: Important Safety Instructions

    SW-21HT Caution Important Safety Instructions Caution : Read this page carefully to ensure safe oper- ation. CAUTION Read These Instructions RISK OF ELECTRIC SHOCK DO NOT OPEN - All the safety and operating instructions should be read before CAUTION: TO REDUCE THE RISK OF ELECTRIC the product is operated.

  • Page 3: Installation

    SW-21HT 7.CAUTION - Polarization 17. Power Lines - Do not defeat the safety purpose of the polarized or ground- - An outside antenna system should not be located in the vicin- ing-type plug. A polarized plug has two blades with one wider ity of overhead power lines or other electric light or power cir- than the other.
  • Page 4 CN807 LED1 LED2 U803 U802 U804 Q805 Q820 JK801 U801 CON1 CON2 CON3 CON4 CN902 VR801 U901 T901...
  • Page 5 SW-21HT RCA Jack board (SIDE A) RCA Jack board (SIDE B) EC806 R817 L806 C805 U801 TP15 R835 R805 R834 C806 FB807 EC810 C809 R816 TP14 JK801 EC809 TP17 TP19 CN803 TP16 TP18 LED & Switch board (SIDE A) LED & Switch board (SIDE B)
  • Page 6 SW-21HT SMPS (SIDE A) C907 JP901...
  • Page 7 SW-21HT SMPS (SIDE B) R932 R934 C908 C913 R920 R928 R927 R915 R906 R907 D904 R909 U901 R913 C904 D902 C905 R914 C903 C906 R911 R912 R910...
  • Page 8 SW-21HT AMP (SIDE A) C805 R835 R834 R870 R878 R879 CN807 CN802 R807 R818 C809 R812 C806 R817 R871 R836 LED3 R873 R808 R161 R844 CON2 CON1 C810 Q806 R861 R162 Q811 R809 R820 R822 C802 C801 C811 R821 Z801...
  • Page 9 SW-21HT AMP (SIDE B) Volume & Power switch board (SIDE B)
  • Page 10 SW-21HT SMPS L901 C902 BD901 C901 CE901 D902 CX903 Q901 U901 R910 R911 R909 CHGND R903 R904 R901 R902 R915 CX902 CX901 CN902 To Amp CN806 CN901 To Volume & Power switch board CN903...
  • Page 11 SW-21HT CY904 AGND C907 R918 L903 D905 Q903 R920 C908 LF903 D906 L904 F902 FR107 C903 AGND R919 T901 U902-A CY903 R929 Q902 C909 U904 R926 AGND AGND Parts are safety assurance parts. When replacing those parts make sure to use the specified one.
  • Page 12 SW-21HT STANDBY/ON To RCA Jack board CN803 WAKEUP CN805 T13 T14 +12V_AMP MUTE Q820 DETECT R801 R876 +25V +25V EC801 R850 R880 +3.3V +12V_AMP Z801 C801 R833 R830 EC813 Q803 Z802 R831 CON1 R808 CN807 UNPLUG_MUTE R835 To Volume & Power switch...
  • Page 13 SW-21HT +3.3V +12V_AMP WAKEUP Q101-B R163 +12V_AMP T16 T17 Q801 EC101 +3.3V Q804 R161 U803 C806 R162 R817 VREF CN802 Q808 To LED & Switch C809 EC806 board CN3 R818 Q101-A Q806 STANDBY/ON FB805 To Volume & Power switch FB802 board CON4 +3.3V...
  • Page 14 SW-21HT RCA Jack board TP14 U801-A BA4558 FB807 R804 EC807 U801 BA45 180R TP15 FB600R R805 R834 C805 C806 R890 JK801 L806 C829 RCA-103DK Jumper Wire R835 R812 100K C809 R836 VREF Volume & Power switch board VR801 CN903 CN904 W2P/7.92MM...
  • Page 15 SW-21HT Speaker linker board VREF R817 CN2P/3.96 W2P/3.96MM EC809 EC806 R818 100UF/16V 100UF/16V TP18 U801-B R816 BA4558 100R TP16 EC810 10UF TP17 CN803 CN4P/2.0 TP19 R819 C809 LED & Switch board To Amp CON802 W4P 2.0MM CON3 TP13 TP10 TP12...
  • Page 16 (E)TYPE (X)TYPE...

  • Page 17: General Assembly

    SW-21HT General Assembly Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local  T19-0527-08 SUBWOOFER 3Ω 100W N09-5733-08 SCREW 3x6mm(x2) N09-5727-08 SCREW 3x10mm(x2) J19-6596-08 BUTTON BRACKET N82-2608-43 SCREW 2.6x8mm(x2) B19-1711-08 LED LENS K29-8820-08 POWER KNOB J19-6597-08 POWER KNOB BKT...

  • Page 18: Electrical Parts List

    SW-21HT Electrical parts list AMPLIFIER board  Symbol No. Part No. Part Name Description Local Block No. [0][1] C850 CK73GB1H104K C CAPACITOR 0.1uF 50V(x14)  Symbol No. Part No. Part Name Description Local C872 CK73GB1E105K C CAPACITOR 1uF 16V(x11) C873...

  • Page 19: Smps Board

    SW-21HT  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R844 RK73GB2A000J RESISTOR 0Ω 1/10W(x9) Q904 2SC8050 TRANSISTOR R850 RK73GB2A102J RESISTOR 1kΩ 1/16W(x11) D901 FR107DO41 DIODE 1A 1000V(x3) R855 RK73GB2A331J RESISTOR 330Ω...

  • Page 20: Slide Switch

    SW-21HT  Symbol No. Part No. Part Name Description Local  CY901 C91-1869-08 C CAPACITOR 1000pF 250V(x2)  CY902 C91-1869-08 C CAPACITOR 1000pF 250V(x2)  CY903 C91-1870-08 C CAPACITOR 2200pF 250V  F901 F50-0381-08 FUSE 3.15A 250V  F902 F50-0382-08...
  • Page 21 <MEMO>...

  • Page 22: Specifications

    SW-21HT Specifications Type ......Subwoofer system with built-in amplifier [Amplifier] Rated Output Power......100 W RMS (100 Hz, 3 Ω) Input terminals (Sensitivity/impedance) .... 500 mV/22 k Ω [Speaker] Enclosure ......Bass-Reflex, Floor Standing Type Speakers ............. 160 mm cone type Impedance .................

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