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MARINE POWER AMPLIFIER
KAC-210D KAC-210MR
SERVICE MANUAL
© 2005-3 PRINTED IN JAPAN B53-0259-00 (N) 609
Metallic cabinet (A01-2867-02) : KAC-210MR (A01-2880-02) : KAC-210D
KAC-210D
REMOTE |
LINE IN |
POWER |
SUB WOOFER |
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SPEAKER INPUT |
OUTPUT |
KAC-210D 
MAXIMUM
KAC-210MR
KAC-210MR
LINE IN |
POWER |
SUB WOOFER |
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OUTPUT |
MAXIMUM |
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KAC-210MR only
Cord with connector |
Cord with connector |
Mounting hardware |
Screw set |
(E30-6459-05) |
(E30-6460-05) |
(J22-0054-14) X2 |
(N99-1753-05) |
Fuse (F52-0004-05)
This product uses Lead Free solder.
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J1 |
IC1 |
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L |
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ISOLAION AMP |
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IC4 |
LINE IN |
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IC1 |
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R |
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ISOLAION AMP |
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J101 |
IC2 |
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L |
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ISOLAION AMP |
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SP IN |
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IC2 |
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R |
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ISOLAION AMP |
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MINI DIN(J2) |
VOLUME CONTROL |
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LPF FREQ. SELCTOR |
(50,80,100,150Hz) |
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PHASE SELECTOR |
(0,180 |
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REMOTE CONTROL UNIT
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IC6 |
LPF AMP |
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IC5 |
IC103 |
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VOLUME |
GAIN AMP |
L.P.F. |
IC5 |
PHASE SEL. |
PWER AMP |
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Q101 |
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ALC |
IC3 |
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MUTE |
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IC101 |
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CHOPP. OSC |
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12V |
VCC
1/2VCC
9V
IC6 AVR
Q105 AVR
IC101
CONTROL
CIRCUIT
12V Q107
AVR
OVV. PROTECTION
IC102 |
Q101 |
+B |
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OUTPUT |
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J102 |
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FET |
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Q102 |
L.P.F. |
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SUBWOOFER |
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FET |
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FET |
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DRIVER |
Q103 |
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FET |
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Q104 |
L.P.F. |
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FET |
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OC.PROTECT. |
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DC PROTECT. |
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TEMP. DET. |
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B.U, ACC DET. |
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J101 |
INPUT |
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ACC |
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+B |
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B.U |
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POWER |
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P-CON |
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BLOCK |
210D/210MR-KAC |
DIAGRAM |
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KAC-210D/210MR
COMPONENTS DESCRIPTION
● AUDIO UNIT (X09-5800-xx)
Ref No. |
Application / Functions |
Operation / Condition / Compatibility |
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IC1 |
Line input isolation amp |
9V AVR operation (center voltage 4.9V) |
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IC2 |
Speaker input isolation amp |
9V AVR operation (center voltage 4.9V) |
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IC3 |
LPF frequency selector |
Select for 50, 80, 100, 150Hz (Default 150Hz) |
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IC4 |
Volume control |
Electric volume (VCA) |
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IC5 |
LPF, phase selector |
LPF (-12db/oct.) Phase 0°/180° |
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IC6 |
1/2 VCC output OP amp |
Center voltage 4.9V |
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IC101 |
Chopping wave generator & protection control |
Clock 140kHz, protection time (2sec for Power on) |
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IC103 |
Power amp first stage, NF circuit |
9V AVR operation (center voltage 4.9V) |
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IC201 |
D class amp driver |
PWM digital converter, FET driver IC |
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IC202 |
Clipper circuit |
9V AVR operation (center voltage 4.9V) |
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Q1 |
Phase selector |
Switching for phase 0°and 180° |
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Q101~104 |
Power FET |
D class AMP final FET |
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Q105 |
9V AVR |
Use for OP amp |
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Q107,108 |
P-CON control |
When P-CON line more than 8.7V, this circuit is active (ON) |
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Q109 |
Over load voltage detector |
When ACC line more than 18.2V, this circuit is active (OFF) |
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Q110 |
Muting transistor |
Muting for PWM driver when Power is on |
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Q111,112 |
Protection detector |
Feed back for protection data (latch operation) |
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Q113 |
DC protection detector |
DC voltage sensibility is ±5V |
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Q114 |
LED control |
LED light up when Power is ON |
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Q115 |
LED control |
LED light off when protection circuit ON |
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Q116 |
12V AVR control |
12V AVR feedback transistor |
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Q118 |
Temperature & voltage detector |
Protection function |
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Q119 |
Power supply voltage detector |
Detect for Power off condition |
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Q120 |
Discharge transistor (for C148 when Power is off) |
Malfunction for LED light up |
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3
A |
B |
C |
D |
E |
KAC-210D/210MR
1 PC BOARD (FOIL SIDE VIEW)
AUDIO UNIT X09-5800-xx (J76-0018-12)
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R173 |
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C121 |
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D108 |
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R153 |
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R112 |
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W132 |
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C125 |
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W136 |
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R114 |
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D119 |
R115 |
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W33 |
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D120 |
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R174 |
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D111 |
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D110 |
C155 |
IC201 |
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R133 |
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R134 |
W126 |
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W127 |
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R175 |
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R116 |
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1 |
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D121 |
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R113 |
W32 |
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C126 |
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R117 |
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R176 |
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W131 |
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D109 |
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D122 |
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R154 |
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C122 |
W34 |
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W135 |
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R152 |
R157 |
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W130 |
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W29 |
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Q118 |
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D123 |
R171 |
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C128 |
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E B |
R155 |
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C123 |
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C127 |
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R180 |
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W28 |
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W30 |
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S |
D G |
Q104 |
S D G |
Q103 S D G |
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C109 |
R179 |
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Q119 |
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W39 |
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Q102 |
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TH102 |
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R156 |
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B |
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Q101 |
S |
D G |
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W40 |
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R178 |
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W51 |
W47 |
W46 |
C124 |
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W37 |
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W36 |
W35 |
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R183 |
R181 |
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W43 |
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W38 |
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W45 |
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Q120 |
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W50 |
W49 |
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R177 |
R162 |
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C132 |
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C110 |
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R182 |
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R149 |
C133 |
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R226 |
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R148 |
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E |
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R165 |
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L102 |
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L103 |
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W137 |
W129 |
W31 |
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R166 |
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P2 |
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E |
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B |
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Q107 |
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C148 |
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R105 |
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D11 |
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R109 |
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R106 |
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L101 |
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C108 |
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R169 |
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C217
W48
C144
P1
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D118 |
W138 |
E B |
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Q114 |
C218 |
C111 |
C137
R150 |
C145 |
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D115 |
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W139 |
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C136 |
C147 |
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W44 |
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L106 |
L105 |
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W42 |
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W41 |
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C219 |
D106 |
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C146 |
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10 |
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W133 |
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J101 |
W134 |
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J102 |
1 |
2 |
1 |
5 |
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Q109 |
E |
Q115 |
R107E B B |
E B R118 |
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W128 |
B E |
Q116 |
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D104 |
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C143 |
R110 |
J1
L
R108 |
D105 |
R |
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Q108 |
C21 |
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R168 |
C149 |
C |
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C4 |
D6 |
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R16 |
R15 |
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R21 |
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SUB WOOFER |
POWER/SPEAKER INPUT |
LINE IN |
PRE OUT |
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