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POWER AMPLIFIER
XXV-02A
QQ
3 7 63 1515 0
SERVICE MANUAL
TE
L 13942296513
Fuse (30A)
(F52-0015-05)
www
.
* Depends on the destination. Refer to the parts list.
Screw
(N07-0003-08)
FUSE(30A 2)
POWER IN
* Cover
(F07-xxxx-xx)
"eXcelon" is not printed
on European Model
x
ao
u163
y
i
2 9
8
Heat sink
(F01-1796-01)
FAN
VOLT
TEMP
CURR
Q Q
4 3 2
channel Power Amplifier
3
6 7
1 3
1 5
Screw
(N09-4214-08)
ID NUMBER
TO H/U
REMOTE
co
.
9 4
2 8
© 2005-4 PRINTED IN JAPAN
B53-0283-00 ( N ) 1553
MENU
0 5
8
2 9
9 4
2 8
"eXcelon" is not printed
on European Model
* Dressing plate
(A21-xxxx-xx)
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-02A
Summary of Contents for Kenwood XXV-02A
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Page 1: Service Manual
POWER AMPLIFIER XXV-02A 3 7 63 1515 0 SERVICE MANUAL © 2005-4 PRINTED IN JAPAN B53-0283-00 ( N ) 1553 Heat sink (F01-1796-01) VOLT MENU TEMP CURR 4 3 2 channel Power Amplifier L 13942296513 "eXcelon" is not printed on European Model... -
Page 2: Block Diagram
XXV-02A BLOCK DIAGRAM 3 7 63 1515 0 (X09-5940-10) (X08-4240-10) 27db HIGH Q305,307,311 Q323,325 PASS RCA IN ISOLATION DIFFERENTIAL B-CLASS BUFFER MUTE1 AMPLIFIER STAGE STAGE HIGH Q306,308,312 Q320,322 PASS ISOLATION DIFFERENTIAL B-CLASS BUFFER MUTE1 AMPLIFIER STAGE STAGE RCA IN HIGH... -
Page 3: Audio Unit (X09-5940-10)
XXV-02A COMPONENTS DESCRIPTION 3 7 63 1515 0 AUDIO UNIT (X09-5940-10) Ref. No Application / Function Operation / Condition / Compatibility IC1,2 Input isolation amplifier Microprocessor Microprocessor reset IC Current detection circuit voltage amplification LX communication LX-CLK, LX-DATA-M comparator AMP I2C communication signal level converter... -
Page 4: Microcomputer's Terminal Description
XXV-02A MICROCOMPUTER’S TERMINAL DESCRIPTION 3 7 63 1515 0 MICROPROCESSOR : 784224YGC117 (X09 : IC3) ◊ 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-02A 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-02A 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-02A 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-02A PC BOARD (COMPONENT SIDE VIEW) 3 7 63 1515 0 PREAMPLIFIER UNIT X08-4240-10 (J76-0011-02) R247 C906 R248 C108 C102 R104 C114 C104 C106 R112 R126 R108 R116 R213 R233 R115 C115 R105 R217 R103 C101 C105 C103 R122 C107... -
Page 9: Pc Board (Foil Side View)
XXV-02A PC BOARD (FOIL SIDE VIEW) 3 7 63 1515 0 PREAMPLIFIER UNIT X08-4240-10 (J76-0011-02) TP11 TP13 TP24 TP10 TP14 TP41 TP12 TP20 TP25 TP15 TP40 TP22 TP42 TP17 TP45 TP44 TP23 TP21 TP28 TP30 TP19 TP18 TP34 TP170 TP27... - Page 10 XXV-02A PC BOARD (FOIL SIDE VIEW) 3 7 63 1515 0 2.5mV 2.5mV 2.5mV AUDIO UNIT X09-5940-10 A/2 (J76-0132-01) DC voltmeter DC voltmeter DC voltme W526 W530 W320 W321 W369 W627 W368 W346 D405 W568 W598 W594 W581 W537 W533...
- Page 11 XXV-02A 3 7 63 1515 0 2.5mV 2.5mV X09 B/2 DC voltmeter DC voltmeter D160 W511 W156 Q419 W708 D161 D404 W516 W521 W509 W507 W514 W513 27 R421 W510 W512 R458 R460 R457 Q426 W151 W173 W213 W183 W163...
- Page 12 XXV-02A 3 7 63 1515 0 AUDIO UNIT (X09-5940-10) (A/2) 15.0V D101 R170 (1/4) IC1(2/4) R109 R301 C301 10u50 R101 C103 10u50 R107 10K R125 10K C100 1000P R111 10K C131 15P R100 R112 10K C132 15P Q905 R108 R126 10K...
- Page 13 XXV-02A 3 7 63 1515 0 36.0V C353 C355 R333 Q319 1000P 1000P Q323 15.0V Q309 D203 R341 D301 R351 C309 C921 0.01 Q311 Q315 CURRENT SIGNAL AMP R337 1.5K IDLE (2/2) R313 Q301 Q303 R614 IC6(1/2) R174 R187 C315...
- Page 14 XXV-02A 3 7 63 1515 0 +15V AVR 15.0V DC/DC CONVERTER 3.3K Q901 Q902 -15V AVR 36.0V 6.2K -15.0V -36.0V 0.01 5V SW 5V AVR 5.0V 100K 5.0V 8.2K OUT DC DET. 100K 0.01 5.6K R573 14.4V R572 FAN+B TRANS.
- Page 15 ID NUMBER ATT2 appliance is returned to the customer. ATT1 • DC voltages are as measured with a high impedance voltmeter. Values may vary slightly due to variations between individual instruments or/and units. u163 XXV-02A (1/2) X09-5940-10 A/2 (4/4)
- Page 16 XXV-02A 3 7 63 1515 0 PREAMPLIFIER UNIT (X08-4240-10) R122 TP31 TP32 8.2K IC1(1/4) TP29 TP33 C107 TP36 C101 C105 R233 10u35 TP37 TP174 TP170 10u35 C103 0.22 R105 TP35 10K(A) 50K(C) TP38 TP46 HPF,12dB/oct, INPOUT SENS. F=VRcont TP43 IC1(2/4)
- Page 17 10u35 TP103 TP88 R22 8.2K TP104 -15.0V 15.0V TP90 TP102 u163 XXV-02A (2/2) IC1,2,4 NJM2058M-ZB IC5,6 NJM4565MD-ZB CAUTION : For continued safety, replace safety critical components only with manufacturer’s LC75853NE-E SIGNAL LINE recommended parts (refer to parts list). E-TDA7409DTR GND LINE Indicates safety critical components.
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Page 18: Exploded View
XXV-02A 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 (X09-) 3x8(BLK) : N89-3008-43 (B/2) : N89-3008-48... -
Page 19: Parts List
XXV-02A 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 20: Preamplifier Unit (X08-4240-10)
XXV-02A PARTS LIST 3 7 63 1515 0 PREAMPLIFIER UNIT (X08-4240-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation R18,19 RK73GB2A103J CHIP R J 1/10W R31-0238-05 VARIABLE RESISTOR (10K,A) R20,21 RK73GB2A473J CHIP R J 1/10W... - Page 21 XXV-02A PARTS LIST 3 7 63 1515 0 AUDIO UNIT (X09-5940-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation C101,102 CK73GB1H102K CHIP C 1000PF C509-511 CC73GCH1H101J CHIP C 100PF C103,104 CD04BJ1H100M ELECTRO 10UF 50WV...
- Page 22 XXV-02A PARTS LIST 3 7 63 1515 0 AUDIO UNIT (X09-5940-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation RK73GB2A332J CHIP R 3.3K J 1/10W R325,326 RK73GB2A511J CHIP R J 1/10W RK73GB2A103J CHIP R...
- Page 23 XXV-02A PARTS LIST 3 7 63 1515 0 AUDIO UNIT (X09-5940-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation R511 RK73GB2A470J CHIP R J 1/10W R619 RK73GB2A153J CHIP R J 1/10W R512 RD14BB2C470J J 1/6W...
- Page 24 XXV-02A PARTS LIST 3 7 63 1515 0 AUDIO UNIT (X09-5940-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation W603,604 R92-2053-05 CHIP R 0 OHM J 1/8W RD16JS-AZ(B) ZENER DIODE W605-607 R92-1252-05 CHIP R...
- Page 25 XXV-02A PARTS LIST 3 7 63 1515 0 AUDIO UNIT (X09-5940-10) Desti- Desti- Ref. No. Parts No. Description Ref. No. Parts No. Description nation nation Q9,10 2SA1577 TRANSISTOR Q322 2SA1386ANF TRANSISTOR Q11-16 2SK3662-F Q323 2SC3519ANF TRANSISTOR 2SD2012-F TRANSISTOR Q325 2SA1386ANF...
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Page 26: Specifications
Installation Size (W x H x D) ....446 x 61 x 265 mm (17-5/8 x 2-3/8 x 10-3/8 inch) Weight ......................4.47kg (9.85 lbs) KENWOOD follows a policy of continuous advancements in development. For this reason specifications may be changed without notice. Installation...