Kenwood KACX520 free download

File name Kenwood-KACX520 caramp.pdf

POWER AMPLIFIER KAC-PS520/X520 SERVICE MANUAL © 2002-3 PRINTED IN KOREA B51-7934-00 (K) 3547 30 INFRASONIC OFF ON B.M.S. OFF REMOTE +12dB FILTER OFF HPF LPF OPERATION STEREO MONO(L ch) LINE IN LINE OUT L GND R R 30 EXT.AMP.CONT. L FUSE(30Ax2) BATT. POWER IN GND P.CON SPEAKER OUTPUT LEFT BRIDGED RIGHT KAC-PS520/X520 MICROCOMPUTER'S TERMINAL DESCRIPTION (X09-) IC11 : 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-PS520/X520 ADJUSTMENT (KAC-PS520/X520) No. ITEM INPUT SETTINGS OUTPUT SETTINGS RECEIVER SETTINGS ALIGNMENT POINTS ALIGN FOR FIG. Connect a cassette receiver or other receiver. Connect a DC voltmeter between emitter terminals of Q35/Q36 (L/R) and J2 (SP.OUT, L+/R-). 1 IDEL CURRENT - VOLUME : 0 VR1 (L ch) VR2 (R ch) (X09-) 2.5mV (a) 3 KAC-PS520/X520 ADJUSTMENT Q35 (L) VR1 (a)2.5mV DC Voltmeter (a)2.5mV L R (R) VR2 DC Voltmeter J2 Q36 4 A B C D E PC BOARD 1 Component side view X08-4090-10 (J74-1362-11) 2 6 1 6 1 6 1 CN1 CN2 CN3 3 S1 VR1 SENS VR2 BMS VR3 LPF VR4 BRF(X810D) HPF(X520) 4 F