Kenwood XXV02A free download

File name Kenwood-XXV02A car amp.pdf

POWER AMPLIFIER XXV-02A SERVICE MANUAL © 2005-4 PRINTED IN JAPAN B53-0283-00 (N) 1553 Heat sink (F01-1796-01) FAN VOLT MENU TEMP CURR 4 3 2 channel Power Amplifier "eXcelon" is not printed on European Model Screw (N07-0003-08) Screw (N09-4214-08) * Dressing plate (A21-xxxx-xx) 30 456 23 FUSE(30A 2) POWER IN ID NUMBER Fuse (30A) (F52-0015-05) Screw & Wrench key set (N99-1770-15) * Cover (F07-xxxx-xx) "eXcelon" is not printed on European Model 4 3 2c ha nn el Po we rA m pli fie r * Depends on the destination. Refer to the parts list. 9 01 30 78 TO H/U REMOTE RESET Screw set (N99-1577-15) Accessory (W01-1606-05) XXV-02A BLOCK DIAGRAM (X09-5940-10) 6db (X08-4240-10) VR3 HIGH PASS VR3 VR1 IC3 6db 27db RCA IN L ACH R RCA IN IC1 ISOLATION AMPLIFIER IC1 ISOLATION AMPLIFIER V Q41 MUTE1 Q305,307,311 DIFFERENTIAL STAGE Q306,308,312 DIFFERENTIAL STAGE Q323,325 B-CLASS STAGE Q320,322 B-CLASS STAGE SP OUT SP OUT BUFFER HIGH PASS VR1 IC3 BUFFER Q42 MUTE1 VR4 IC2 IFS VR5 LOW PASS HIGH PASS VR2 IC3 BUFFER AMP CONTROL IC I2C COMMUNICATION RCA IN L IC1 ISOLATION AMPLIFIER Q43 MUTE1 SW5 Q405,407,411 DIFFERENTIAL STAGE Q423,425 B-CLASS STAGE SP OUT BCH IC1 R RCA IN ISOLATION AMPLIFIER V VR5 IC2 IFS VR4 HIGH PASS LCD DISPLAY LCD DRIVER IC LOW PASS VR2 IC3 BUFFER SW5 Q44 MUTE1 Q406,408,412 DIFFERENTIAL STAGE Q424,426 B-CLASS STAGE SP OUT 15V/-15V KEY LED+B VCC Q17,18,26 AVR LOGO LED Q50-53 5L COMMUNICATION to H/U I2C COMMUNICATION to AMP u-COM MUTE2 POP NOISE CIRCUIT Q11-16, 901,902 DC/DC CONVERTER Q56,57,60,61 DC DETECTOR OVER LOAD DETECTOR Q30,31 P. CON CIRCUIT OVER VOLTAGE CIRCUIT BU THERMAL PROTECTION PCON P-SW Q22 FAN E2PROM I DETECTOR RST IC DIP SW Q25 SW5V BU DETECTOR BU5V V-DOWN DETECTOR COMPONENTS DESCRIPTION PREAMPLIFIER UNIT (X08-4240-10) Ref. No IC1 IC2 IC4 IC5 IC6 IC7 IC8 Application / Function (1/4, 2/4) : Ach HPF, (2/4) : ALch buffer, (3/4) : BRch invert buffer Bch infrasonic filter (1/4, 2/4) : Bch HPF, (3/4, 4/4) : Bch LPF Bch buffer (1/2) : BLch buffer, (2/2) : BRch invert buffer LCD driver, key scan When AMP-CON SW ON, from H/U (via Lx-Bus) change Bch E-VOL IC sound by AMP-CONTROL Operation / Condition / Compatibility 2 XXV-02A COMPONENTS DESCRIPTION AUDIO UNIT (X09-5940-10) Ref. No IC1,2 IC3 IC4 IC6 IC8 IC9 IC10 Q1 Q2 Q7~10 Q11~16 Q17,26 Q18,27 Q20,21 Q22,24 Q25 Q30,31 Q41~44 Q50~53 Q54 Q56,57 Q58 Q59 Q61 Q62~67 Q73,77 Q74,75 Q80~83 Q84 Q85,86,90,92~96,98 Q91 Q210 Q212,311,411,412 Q301~309,312 Ach first stage differential amplifier Q314,319,321 Q315~318,415~418 Q320,322,323,325 Q401~410 Q423-426 Q901,902 Q905,906,945,946,967 Over current detection and protection Ach final current amplifier Bch first stage differential amplifier Bch final current amplifier DC/DC converter 1dB attenuation circuit Input isolation amplifier Microprocessor Microprocessor reset IC Current detection circuit voltage amplification LX communication LX-CLK, LX-DATA-M comparator AMP I2C communication sign