Kenwood KDC-M6024, Service Manual

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KDC-M6024/G/GY/Y
KDC-MP522,X569
4
COMPONENTS DESCRIPTION
Ref.No. Component Name Application/Functions Operation/Condition/Compatibility
Q101 UN5216 Buffer amp COMPOSITE SIGNAL BUFFER.
Q151 UN5114 DSI driver When base voltage level is "L" DSI LED is light up / When base voltage
level is "H" DSI LED turns off / When panel assy is pull off, cut off the
supply to panel 5V AVR.
Q152 2SA1576A Panel 5V SW When panel assy attached to the unit, Q152 base goes "L" and supply to
panel 5V AVR to panel assy .
Q153 UN5213 Illumination control When Q153 base voltage to "H", illumination is light up.
Q154 2SA1577 Illumination control When Q153 base voltage to "H", illumination is light up.
Q201 UN5216 Buffer amp Noise buffer amp.
Q350 UN5112 Pre & NF mute SW When base voltage to "L", drive to pre & NF mute SW(Q351,355,357).
Q351 UN5216 Pre mute SW When base voltage to "H", muting to the pre Lch or NF Lch line.
Q352 UN5216 Pre mute SW When base voltage to "H", muting to the pre Rch or NF Rch line.
Q354 UN5112 Pre & NF mute SW When base voltage to "L", drive to pre & NF mute SW(Q32,356,358).
Q355 UN5216 Pre mute SW When base voltage to "H", muting to the front Lch line.
Q356 UN5216 Pre mute SW When base voltage to "H", muting to the front Rch line.
Q357 UN5216 Pre mute SW When base voltage to "H", muting to the rear Lch line.
Q358 UN5216 Pre mute SW When base voltage to "H", muting to the rear Rch line.
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SWITCH UNIT (X16-2020-10/2222-70)
Ref.No. Component Name Application/Functions Operation/Condition/Compatibility
IC1 LC75808W LCD driver Drive for LCD unit.
IC2 PNA4S22M Remote control IC Receiving for the remote control unit.
Q1 2SC4081 VLCD AVR When base voltage level goes 7.9V Q1 is ON.
Q2 DTA114EUA Remo. ON SW When base voltage level goes "L" the power supply IC2 is turned "ON".
Q3 2SC4081 Key illumination SW Lights up for green key illumination when base voltage level goes "H".
Q4 2SC4081 Key illumination SW Lights up for red key illumination when base voltage level goes "H".
Q5 2SC4081 Dimmer control SW Lights up for LCD back light when base voltage level goes "H".