Kenwood KACX650D free download

File name Kenwood-KACX650D caramp.pdf

POWER AMPLIFIER KAC-PS650D KAC-X650D SERVICE MANUAL © 2002-3 PRINTED IN KOREA B51-7935-00 (K) 3547 30 A.CH OFF HPF FILTER B.CH OFF HPF LPF B.M.S. OFF REMOTE +12dB OPERATION STEREO MONO(Lch) INPUT SELECTOR A B A A B SUB A LINE IN B SUB L GND 200 50 A.CH HPF 200 50 B.CH HPF 200 50 B.CH LPF 200 50 SUB.CH LPF R FILTER FREQUENCY(Hz) 30 EXT.AMP.CONT. L R FUSE(30Ax2) BATT. POWER IN GND SPEAKER P.CON OUTPUT B A BRIDGED LEFT RIGHT SUB SUB KAC-PS650D/X650D MICROCOMPUTER'S TERMINAL DESCRIPTION (X09-) IC22 : u-COM PORT No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28,29 30 31 32 33 34 35,36 37 38,39 40 41 42 43 44 PORT NAME +5V SW FAN D VOLTAGE V DOWN D CURRENT AB VOLTAGE AB CURRENT BLUE GREEN RED TEST RESET XIN XOUT VSS VAREF ADIN 1 ADIN 2 ADIN 3 ADIN 4 BASS 12dB BASS REMO BASS OFF D POWER POWER COM HU OFFSET CON BASS CON A BASS CON B STAND-BY VDD TACT SW MUTE 2 MUTE 1 I/O O O I I I I I O O O I I I I I I I O O I O O O I I O O FUNCTION Controls small-amount current. Controls fan rotation. Detects class-D over-voltage. Detects momentary power down. Detects class-D over-current. Detects class-AB over-voltage. Detects class-AB over-current. Controls BLUE of variable illumination. Controls GREEN of variable illumination. Controls RED of variable illumination. Resets. A/D reference. Detects temperature. Detects temperature. Detects temperature. Detects temperature. Stabilizes BMS +12dB. Being remote-controlled from BMS head unit. Releases boost. Controls class-D amplifier. Controls power amplifier. Measures the head unit pulse. Controls bass boost frequency offset. Controls bass boost frequency offset. Controls bass boost frequency offset. Cancels stop mode by P.CON on. VDD. Switches color. Controls driver stages. Controls amplifier input mute. "L" : SW 5V on. "H" : Fan on. "L" : Over-voltage detection. "H" : Momentary power-down detection. "L" (Class-D power on) : Over-current detection. "L" : Over-voltage detection. "H" : Over-current detection. "H" : Illumination on. "H" : Illumination on. "H" : Illumination on. "L" : Reset. "H" : Unusual temperature detection. "H" : Unusual temperature detection. "H" : Unusual temperature detection. "H" : Unusual temperature detection. "H" : BMS +12dB stabilization. "H" : remote control available. "H" : Boost off. "H" : Class-D amplifier on. "H" : SW 14.4V on. "H" : Offset on. "L" : P.CON on or BACK-UP over-voltage detection. "H" : SW on. "L" : Mute on. "L" : Mute on. OPERATING CONDITION 2 KAC-PS650D/X650D CIRCUIT DESCRIPTION Shock Noise Prevention Circuit D151 2 R129 R183 1.8K 33 +B R455 10K 1 R451 10K R452 R448 1K R516 10K 10K UP Q159 R514 R513 C151 10u16 + Q428 R457 6.8K 47 R454 10K Q426 Q427 R179 510 VR5 220 6.8K D153 R458 47 R453 10K R456 10K Q429 D435 R517 10K C464 47u25 + D431 u-COM "MUTE-2" 1 receives mute signal from MUTE-2 terminal of u-COM, and bias voltage of 2 is short-circuited, and driver transistors and final transistors on X08- get in c