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SERVICE MANUAL POWER AMPLIFIER 3 2005 MA172 KS-AX3500 Area suffix J ------------- Northern America E ------------- Southern Europe U -------------------- Other Areas TABLE OF CONTENTS 1 2 3 4 5 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3 1-4 1-5 1-6 1-7 COPYRIGHT © 2005 Victor Company of Japan, Limited No.MA172 2005/3 SPECIFICATION Power Output Signal-to-Noise Ratio Maximum Power Output Load Impedance Frequency Response Input Sensitivity/Impedance Distortion Power Requirement Grounding system Dimensions (W/H/D) Mass (approx.) 55 W RMS Ч 4 channels at 4 and [ < or = ] 1% THD + N 86 dBA (reference: 1 W into 4 ) 580 W 4 (2 to 8 allowance) 4 (4 to 8 allowance) (Bridge mode) 5 Hz to 50,000 Hz ( +0, -3 dB) 1 V/20 k (0.3 V to 6 V, variable) Less than 0.005% (at 1 kHz) DC 14.4 V (11 V to 16 V allowance) Negative ground 347 mm Ч 54 mm Ч 222 mm (13-11/16 in. Ч 2-3/16 in. Ч 8-3/4 in.) 2.8 kg (6.2 lbs.) Design and specifi cations are subject to change without notice. 1-2 (No.MA172) SECTION 1 PRECAUTION 1.1 Safety Precautions ! Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. (No.MA172)1-3 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-4 (No.MA172) SECTION 3 DISASSEMBLY 3.1 Main board 3.1.1 Removing the main board (See Fig.1 to 4) (1) From the bottom of the amplifier, remove the seven screws A attaching the cover. (2) From the main body of the amplifier, remove the nine screws B and the screw C attaching the main board. (3) Remove the three screws D on top of the rear cover. (4) Remove the screw E and the four screws F on the front side of the rear cover. A A A A Fig.1 B B B C Fig.2 D Fig.3 F E F Fig.4 (No.MA172)1-5 SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT. 1-6 (No.MA172) SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. (No.MA172)1-7 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY CAR ELECTRONICS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MA172) Printed in Japan VPT KS-AX3500 KS-AX3300 LVT1329-001A [J/E/U] POWER AMPLIFIER: INSTRUCTIONS AMPLIFICATEUR DE