Kenwood XXV03A free download

File name Kenwood-XXV03A car amp.pdf

POWER AMPLIFIER XXV-03A SERVICE MANUAL © 2005-4 PRINTED IN JAPAN B53-0282-00 (N) 1553 Heat sink (F01-1795-01) FAN VOLT MENU TEMP CURR Subwoofer Power Amplifier "eXcelon" is not printed on European Model Screw (N07-0003-08) Screw (N09-4214-08) * Dressing plate (A21-xxxx-xx) 25 23 POWER IN ID NUMBER Fuse (25A) (F52-0014-05) Screw & Wrench key set (N99-1770-15) * Cover (F07-xxxx-xx) "eXcelon" is not printed on European Model * Depends on the destination. Refer to the parts list. 9 01 25 25 456 78 TO H/U REMOTE RESET Screw set (N99-1577-15) S u b w o o fe r P o w e r A m p li fi e r Accessory (W01-1606-05) XXV-03A BLOCK DIAGRAM (X08-4230-10) (X09-5930-10) IC1 ISO LINE IN 15/25Hz IC1 I.F.S ON/OFF IC2 B.R.F OFF/6/12 FREQ IC2 INV NOR/REV IND FAN Q15,18,19,21,22,27, 28,37-40,42-45,48-51 AMP SP OUT Q73, 78 DC OFFSET DET. D PWR LINE OUT ED1 LCD BACK LIGHT FREQ IC5 L.P.F LEVEL IC3 IC4 AMP CONT. ON/OFF IC3 Q10 MUTE IC2,3 COMPARATOR IC6 LCD DRIVER IC4,5 DEAD TIME CONT Q9 LED FAN IC2 TRIANGLE WAVE Q52-55 OVER IC6 LOAD DET. MUTE DRIVER IC16 to H/U COMPARATOR Q1-4 ISOLATOR AVR 5V SW5V 15V THERMAL PROTECT Q80 POWER SWITCH Q25,26, 29,30, IC13 84,110 15V AVR Q106-108 ROM CORRECT ACCRESS SWITCH +5V AVR D.D CON IC14 CURRENT DET. Q63 Q83 INPUT FAN VOLTAGE CONTROL MEASURE Q66 OVER VOLTAGE DET. Q62 P CON DET. DOWN VOLTAGE DET. P CON BATT GND IC15 REMOTE I2C BUFFER IC10 u-COM IC11 RESET IC Q20 +5V SWITCH COMPONENTS DESCRIPTION PREAMPLIFIER UNIT (X08-4230-10) Ref. No IC1 IC2 (1/4~3/4) IC2 (4/4) IC3 IC4 IC5 IC6 ISF BRF INV OP amplifier E-VOL LPF LCD driver Application / Function Operation / Condition / Compatibility Cutting super-low range of audio signal Cutting bandwidth of audio signal Phase reversal of audio signal Voltage amplification, Buffer Electronic volume Cutting high-range of audio signal LCD driver AUDIO UNIT (X09-5930-10) Ref. No IC1 IC2 (1/2) IC2 (2/2) IC3 Application / Function Isolation amplifier Triangular wave generation Error amplifier Comparator, Triangular wave generation Operation / Condition / Compatibility Prevent noise from GND potential difference Reference signal for digitizing analog signal Error is compensated by the feedback from output Digitizing by comparison of analog signal and triangular wave 2 XXV-03A COMPONENTS DESCRIPTION Ref. No IC4,5 IC6 IC7 IC10 IC11 IC13 IC14 IC15 IC16 Q1,2,5,7 Q3,4,6,8 Q9 Q10 Q15,18,19,21,22,27, Signal amplification, switching Q28,37~40,42~45 Q16,17 Q20 Q23,24,35,36,41,83 Q25,29,84 Q26,30,110 Q31,33,46,109 Q47 Q52-55 Q57,58,60,61, Switching Q64,65,67~70 Q59,63 Q62 Q66 Q71,72 Q73,78 Q74-77 Q79,80 Q81,82 Q88,89,98,99 Q95,96 Q97 Q102,111 Q103,104 Q106-108 Voltage control Voltage detection Voltage detection Waveform shaping Voltage detection Current amplification Voltage control Voltage control Voltage control Voltage control Voltage control Voltage control Voltage control AVR In order to have µcom display voltage value, send voltage to it only when 5V SW ON Pco