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POWER AMPLIFIER
XXV-03A
QQ
3 7 63 1515 0
SERVICE MANUAL
TE
L 13942296513
www
.
* Depends on the destination. Refer to the parts list.
Screw
(N07-0003-08)
POWER IN
Fuse (25A)
(F52-0014-05)
* Cover
(F07-xxxx-xx)
"eXcelon" is not printed
on European Model
x
ao
u163
y
i
2 9
8
FAN
VOLT
TEMP
CURR
Q Q
Subwoofer Power Amplifier
3
6 7
1 3
1 5
Screw
* Dressing plate
(N09-4214-08)
(A21-xxxx-xx)
ID NUMBER
TO H/U
REMOTE
co
.
9 4
2 8
© 2005-4 PRINTED IN JAPAN
B53-0282-00 ( N ) 1553
Heat sink
(F01-1795-01)
MENU
0 5
8
2 9
9 4
2 8
"eXcelon" is not printed
on European Model
RESET
Screw & Wrench key set
(N99-1770-15)
Screw set
m
(N99-1577-15)
Accessory
(W01-1606-05)
9 9
9 9
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Table of Contents
Related Manuals for Kenwood xxv-03a
Summary of Contents for Kenwood xxv-03a
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Page 1: Service Manual
POWER AMPLIFIER XXV-03A 3 7 63 1515 0 SERVICE MANUAL © 2005-4 PRINTED IN JAPAN B53-0282-00 ( N ) 1553 Heat sink (F01-1795-01) VOLT MENU TEMP CURR Subwoofer Power Amplifier L 13942296513 "eXcelon" is not printed on European Model Screw... -
Page 2: Block Diagram
XXV-03A BLOCK DIAGRAM 3 7 63 1515 0 (X08-4230-10) (X09-5930-10) 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,... - Page 3 XXV-03A COMPONENTS DESCRIPTION 3 7 63 1515 0 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...
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Page 4: Microcomputer's Terminal Description
XXV-03A MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 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... - Page 5 XXV-03A MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 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...
- Page 6 XXV-03A MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 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...
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Page 7: Circuit Description
XXV-03A CIRCUIT DESCRIPTION 3 7 63 1515 0 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)
XXV-03A PC BOARD (COMPONENT SIDE VIEW) 3 7 63 1515 0 PREAMPLIFIER UNIT X08-4230-10 (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 L 13942296513 X08-4230-10 Ref. No. Address u163 Refer to the schematic diagram for the values of resistors and capacitors. -
Page 9: Pc Board (Foil Side View)
XXV-03A PC BOARD (FOIL SIDE VIEW) 3 7 63 1515 0 PREAMPLIFIER UNIT X08-4230-10 (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... - Page 10 XXV-03A PC BOARD (FOIL SIDE VIEW) 3 7 63 1515 0 AUDIO UNIT X09-5930-10 A/2 (J76-0131-01) W324 R220 R221 W438 R223 R193 R190 R142 TP100 R143 TP101 R158 R155 R304 W429 W114 W115 W392 -15V R114 +15V R134 R144 W334...
- Page 11 XXV-03A 3 7 63 1515 0 X09-5930-10 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...
- Page 12 XXV-03A 3 7 63 1515 0 1.5K 10.0V 1800P COMPARATOR AUDIO UNIT (X09-5930-10) (A/2) 0.01 0.01 15.0V (1/2) NC14 (1/2) -10.0V 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-...
- Page 13 B LINE B LINE CURRENT SIGNAL AMP XXV-03A (1/2) u163 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 XXV-03A 3 7 63 1515 0 PREAMPLIFIER UNIT (X08-4230-10) TP14 10u35 15.0V TP11 I.S.F AMP C9 0.01 I.S.F ON/OFF B.R.F AMP TP15 (1/2) 50K(C) TP13 10u35 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...
- Page 15 XXV-03A (2/2) • DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual instruments or/and units.
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Page 16: Exploded View
XXV-03A EXPLODED VIEW 3 7 63 1515 0 3x12 : N09-6216-05 : N09-6218-05 : N09-6220-05 4 WASHER : N15-1040-48 2x8(BLK) : N80-2008-43 3x10(BLK) : N80-3010-43 : N82-2006-48 2.6x6 : N84-2606-48 3x6(BLK) : N89-3006-43 3x8(BLK) : N89-3008-43 : N89-3008-48 3x16 : N89-3016-48... -
Page 17: Parts List
XXV-03A PARTS LIST 3 7 63 1515 0 New parts Parts without Parts No. are not supplied. Les articles non mentionnes dans le Parts No. ne sont pas fournis. Teile ohne Parts No. werden nicht geliefert. Desti- Desti- Ref. No. - Page 18 XXV-03A PARTS LIST 3 7 63 1515 0 PREAMPLIFIER UNIT (X08-4230-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation RK73GB2A512J CHIP R 5.1K J 1/10W CK73GB1H103K CHIP C 0.010UF K RK73GB2A471J CHIP R J 1/10W...
- Page 19 XXV-03A PARTS LIST 3 7 63 1515 0 AUDIO UNIT (X09-5930-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation CD04BJ1H100M ELECTRO 10UF 50WV RK73GB2A432J CHIP R 4.3K J 1/10W CK73GB1H103K CHIP C 0.010UF K...
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Page 20: Audio Unit (X09-5930-10)
XXV-03A PARTS LIST 3 7 63 1515 0 AUDIO UNIT (X09-5930-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation RK73GB2A103J CHIP R J 1/10W R184 RK73GB2A332J CHIP R 3.3K J 1/10W R100 RK73GB2A152J CHIP R 1.5K... - Page 21 XXV-03A PARTS LIST 3 7 63 1515 0 AUDIO UNIT (X09-5930-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation R267,268 RK73GB2A105J CHIP R 1.0M J 1/10W W378 R92-2053-05 CHIP R 0 OHM J 1/8W...
- Page 22 XXV-03A PARTS LIST 3 7 63 1515 0 AUDIO UNIT (X09-5930-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation D21,22 1SS133 DIODE Q7,8 DTC114EUA DIGITAL TRANSISTOR RD5.1JS-AZ(B2) ZENER DIODE DTA114EUA DIGITAL TRANSISTOR D24,25 1SS133...
- Page 23 XXV-03A PARTS LIST 3 7 63 1515 0 AUDIO UNIT (X09-5930-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation DTC114EUA DIGITAL TRANSISTOR Q88,89 2SC4081 TRANSISTOR DTA114EUA DIGITAL TRANSISTOR DTC114EUA DIGITAL TRANSISTOR Q97-99 2SC4081 TRANSISTOR...
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Page 24: Specifications
Installation Size (W x H x D) ....386 x 61 x 265 mm (15-3/16 x 2-3/8 x 10-3/8 inch) Weight ......................4.07kg (8.97 lbs) KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. Installation...