Kenwood KAC-PS811D Service Manual

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POWER AMPLIFIER
KAC-PS811D
KAC-X811D

SERVICE MANUAL

Fuse (25A)
(F52-0014-05)
Cover
(F07-1136-12): KAC-X811D
(F07-1137-12): KAC-PS811D
Subwoofer Power Amplifier
Screw
Screw
(N07-0003-08)
(N09-4214-08)
POWER IN
© 2004-2 PRINTED IN JAPAN
B53-0138-00 ( N ) 2704
Heat sink
(F01-1751-01)
FAN
VOLT
MENU
TEMP
CURR
ID NUMBER
TO H/U
REMOTE
RESET
Screw set
(N99-1752-05)
Screw set
(N99-1577-15)
Accessory
(W01-1606-05)

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  Summary of Contents for Kenwood KAC-PS811D

  • Page 1: Service Manual

    B53-0138-00 ( N ) 2704 Heat sink (F01-1751-01) VOLT MENU TEMP CURR Subwoofer Power Amplifier Screw Screw (N07-0003-08) (N09-4214-08) POWER IN ID NUMBER TO H/U REMOTE RESET Fuse (25A) (F52-0014-05) Screw set Cover (N99-1752-05) (F07-1136-12): KAC-X811D (F07-1137-12): KAC-PS811D Screw set (N99-1577-15) Accessory (W01-1606-05)
  • Page 2: Block Diagram

    KAC-PS811D/X811D BLOCK DIAGRAM (X08-4170-10) (X09-5790-10) I.F.S B.R.F LINE IN ON/OFF OFF/6/12 NOR/REV 15/25Hz FREQ LINE FREQ Q15,18,19,21,22,27, BACK IC2,3 IC4,5 28,37-40,42-45,48-51 LIGHT DEAD L.P.F MUTE COMPARATOR TIME CONT. CONT SP OUT LEVEL ON/OFF DRIVER Q73, Q52-55 OVER MUTE TRIANGLE LOAD...
  • Page 3 KAC-PS811D/X811D COMPONENTS DESCRIPTION Ref. No Application / Function Operation / Condition / Compatibility IC4,5 NAND D class section reverse wave, deadtime, generation and rectification Comparator Short circuit detection of SP output Signal amplification For SP output short-circuit detection, send the output to comparator...
  • Page 4: Microcomputer's Terminal Description

    KAC-PS811D/X811D MICROCOMPUTER’S TERMINAL DESCRIPTION MICROPROCESSOR : 784224YGC117 (X09 : IC10) ◊ Block Digram AMP communication I/F LX BUS I/F AMP_SCL LX_REQ_M AMP_SDA LX_REQ_S LX_DATA_M Audio control LX_DATA_S AUDIO_SCL LX_CLK AUDIO_SDA LX_RST AUDIO_MUTE HU_BU E2PROM I2C Display data monitor communication AD-I...
  • Page 5 KAC-PS811D/X811D MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Function Processing Operation Description SCL_AMP CLK input/output AMP communication AUDIO_SCL CLK input/output with audio chip AUDIO_SDA Data input/output with audio chip AUDIO_MUTE Mute output to audio chip H : Mute OFF, L : Mute ON...
  • Page 6 KAC-PS811D/X811D MICROCOMPUTER’S TERMINAL DESCRIPTION Pin No. Pin Name Function Processing Operation Description TEST Flash ROM writing Not used Not used VDD0 AVDD AD-I First current detection (for display) AD-V BU voltage detection (for display) 78~80 TEMP1~TEMP3 Temperature detection 1~3 ◊ Logic Table...
  • Page 7: Circuit Description

    KAC-PS811D/X811D CIRCUIT DESCRIPTION Current detection circuit VOLTAGE MPU AD-PORT LEVEL OUTPUT 0.01 0.01 Amplify and rectify potential differences at DETECTION two points in the primary-side current circuit and send it to the AD-port of the MPU and obtain data for displaying current value.
  • Page 8: Pc Board (Component Side View)

    KAC-PS811D/X811D PC BOARD (COMPONENT SIDE VIEW) PREAMPLIFIER UNIT X08-4170-10 (J76-0012-12) B.R.F I.F.S I.F.S I.N.V AMP CONT B.R.F LOW PASS INPUT SENS 200Hz 40Hz 200Hz 50Hz 200mV 503C 103A 503C X08-4170-10 Ref. No. Address Refer to the schematic diagram for the values of resistors and capacitors.
  • Page 9: Pc Board (Foil Side View)

    KAC-PS811D/X811D PC BOARD (FOIL SIDE VIEW) PREAMPLIFIER UNIT X08-4170-10 (J76-0012-12) TP31 TP32 TP65 TP11 TP12 TP34 TP66 TP10 TP72 TP69 TP70 TP71 TP35 TP59 TP28 TP47 TP36 TP37 TP24 TP73 TP68 TP51 TP67 TP22 TP20 TP27 TP30 TP25 TP26 TP17...
  • Page 10 KAC-PS811D/X811D PC BOARD (FOIL SIDE VIEW) AUDIO UNIT X09-5790-10 A/2 (J76-0009-21) W324 R220 R221 W438 R223 R193 R190 R142 TP100 R143 TP101 R158 R155 R304 W429 W114 W115 W392 -15V R114 +15V R134 R144 W334 W443 R147 W418 C102 W439...
  • Page 11 KAC-PS811D/X811D X09-5790-10 X09 B/2 Ref. No. Address Ref. No. Address TP40 R202 W310 R220 R219 R309 R310 R221 R156 R223 R197 R210 R214 R193 W314 TP41 R205 R192 R190 TP100 C110 IC10 R230 IC11 IC13 IC14 IC14 W316 IC15 IC16...
  • Page 12 KAC-PS811D/X811D 1.5K 10.0V 1800P COMPARATOR (X09-5790-10) (A/2) 0.01 0.01 15.0V (1/2) NC14 -10.0V (1/2) R232 TP19 (2/2) NC13 10u35 AGND 10.0V IC2(2/2) INPUT 4.7K 1u50 TP16 AOUT AIN+ 4.7K 0.01 R15 10K AIN- BIN- TP18 2.7K 180P C7 10P C39 47P -10.0V...
  • Page 13 B LINE CURRENT SIGNAL AMP KAC-PS811D/X811D (1/2) CAUTION : For continued safety, replace safety critical components only with manufacturer’s recommended parts (refer to parts list). Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
  • Page 14 KAC-PS811D/X811D (X08-4170-10) TP14 10u16 15.0V TP11 I.S.F AMP C9 0.01 I.S.F B.R.F AMP ON/OFF TP15 (1/2) TP13 50K(C) 10u16 0.22 0.22 0.22 0.22 IC1(2/2) 25Hz -15.0V 15Hz C13 0.01 TP12 TP19 TP68 TP73 TP125 L.P.F AMP IC3(2/2) 15.0V TP62 50K(C)
  • Page 15 24 COM.1 COM.1 appliance is returned to the customer. • DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual instruments or/and units. KAC-PS811D/X811X (2/2) X08-4170-10 (2/2)
  • Page 16: Exploded View

    KAC-PS811D/X811D EXPLODED VIEW φ3x12 : N09-6216-05 φ4x8 : N09-6218-05 φ2x5 : N09-6220-05 φ4 WASHER : N15-1040-48 φ2x8(BLK) : N80-2008-43 φ3x10(BLK) : N80-3010-43 φ2x6 : N82-2006-48 φ2.6x6 : N84-2606-48 φ3x6(BLK) : N89-3006-43 φ3x8(BLK) : N89-3008-43 φ3x8 : N89-3008-48 φ3x16 : N89-3016-48 (X09-) φ3x14...
  • Page 17: Parts List

    RK73GB2A222J CHIP R 2.2K J 1/10W B38-1150-05 LCD DISPLAY ASSY RK73GB2A104J CHIP R 100K J 1/10W E1 : KAC-PS811D K : KAC-X811D M1 : KAC-X811D Indicates safety critical components. (E : Europe K : North America M : Other Areas)
  • Page 18: Preamplifier Unit (X08-4170-10)

    CHIP C 0.68UF C89-92 CD04BC1C392M ELECTRO 3900UF 16WV CC73GCH1H330J CHIP C 33PF CK73GB1H103K CHIP C 0.010UF K E1 : KAC-PS811D K : KAC-X811D M1 : KAC-X811D Indicates safety critical components. (E : Europe K : North America M : Other Areas)
  • Page 19 CHIP R J 1/10W RK73GB2A472J CHIP R 4.7K J 1/10W RK73GB2A102J CHIP R 1.0K J 1/10W E1 : KAC-PS811D K : KAC-X811D M1 : KAC-X811D Indicates safety critical components. (E : Europe K : North America M : Other Areas)
  • Page 20: Audio Unit (X09-5790-10)

    J 1/6W R181 RK73GB2A514J CHIP R 510K J 1/10W R260,261 RK73GB2A272J CHIP R 2.7K J 1/10W E1 : KAC-PS811D K : KAC-X811D M1 : KAC-X811D Indicates safety critical components. (E : Europe K : North America M : Other Areas)
  • Page 21 0 OHM J 1/16W UDZS10B ZENER DIODE W375,376 R92-2053-05 CHIP R J 1/8W D18,19 1SS355 DIODE E1 : KAC-PS811D K : KAC-X811D M1 : KAC-X811D Indicates safety critical components. (E : Europe K : North America M : Other Areas)
  • Page 22 DIGITAL TRANSISTOR 2SC4081 TRANSISTOR 2SB1241 TRANSISTOR 2SA1576A TRANSISTOR Q81,82 DTA114EUA DIGITAL TRANSISTOR 2SC4081 TRANSISTOR 2SD1863 TRANSISTOR E1 : KAC-PS811D K : KAC-X811D M1 : KAC-X811D Indicates safety critical components. (E : Europe K : North America M : Other Areas)
  • Page 23 2SB1238 TRANSISTOR Q107,108 2SC4081 TRANSISTOR Q109 DTC114EUA TRANSISTOR Q110 2SA992(F,E) TRANSISTOR Q111 DTA114EUA TRANSISTOR NT732ATTD103J THERMISTOR E1 : KAC-PS811D K : KAC-X811D M1 : KAC-X811D Indicates safety critical components. (E : Europe K : North America M : Other Areas)
  • Page 24: Specifications

    KENWOOD ELECTRONICS GULF FZE KENWOOD ELECTRONICS UK LIMITED P.O. Box 61318, Jebel Ali, Dubai, U.A.E. Kenwood House, Dwight Road, Watford, Herts, WD18 9EB, United Kingdom KENWOOD ELECTRONICS (THAILAND) CO., LTD. KENWOOD ELECTRONICS DEUTSCHLAND GMBH 956 Udom Vidhya Building (Olympia) Rama IV Road, Silom, Bangrak, Bangkok 10500 Thailand Rembrücker-Str.

This manual is also suitable for:

Kac-x811d