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KENWOOD KDC3025
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of KENWOOD KDC3025 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 4 (click to view)
KDC-3025/325/5026/G
COMPONENTS DESCRIPTION
● SWITCH UNIT (X16-2500-xx)
Ref. No. IC1 IC2 Q1,Q4 Application/Function LCD Driver Remote Control IC REMO ON SW Drives LCD Controls the unit. The power supply of IC2 is turned on when base level goes “L”. Operation/Condition/Compatibility

● ELECTRIC UNIT (X34-3090-xx)
Ref. No. IC1 IC2 Application/Function System µ-COM E.Vol & N.C.MPX Operation/Condition/Compatibility Controls FM/AM tuner, the changer, CD mechanism, Panel, volume, and tone. Controls the source, volume, tone and FM multiplex detector. Bu5V (5V) Audio8V (8V) FM+B (8V) AM+B (8V) P-CON ANT-CON SW1 1.5~3.0 IC3 Power Supply IC 3.5~5.0 7.0~ SW2 2.0~3.0 4.0~ IC4 IC6 IC8 Q1 Q2 Q3 Q4 Q21 Q22 Q23 Power IC Muting logic IC Reset IC Surge Detection BACK-UP Detection ACC Detection SW 5V Servo Regurator Servo SW Conrtol Power Supply IC DSI lights when the base is “L”. Q151 DSI Driver DSI turns off when the base is “H”. DSI turns on and off when panel is taken off. Q152 Q153,Q154 Q201 Q351 Q352 Q354 Q355 Q356 Panel 5V SW ILLUMI Control Noise buffer Pre Mute SW Pre Mute SW Pre Mute SW Pre Mute SW Pre Mute SW Mutes the Rear Lch when the base is “H”. Mutes the Rear Rch when the base is “H”. Drives the Pre Mute sw (Q351, 352, 355, 356) when the base is “L”. Mutes the Front Lch when the base is “H”. Mutes the Front Rch when the base is “H”. When the panel is attached, the base goes “L”, turning the Tr ON to supply 5V to the panel. When panel is taken off, panel 5Vcut off. ILLUMI lights when the base of Q153 is “H”. ILLUMI FM ON ILLUMI AM ON Audio ON Audio P-CON ON Audio P-CON P-ANT ON OUT

Amplifies the front L/R and the rear L/R to 50W maximum. Controls logic for muting. “L” when detection voltage goes below 3.5V or less. “L” when the back-up voltage becomes more than 24V (momentary power down). “H” when the back-up voltage becomes less than 24V. “L” when B.u is present. “H” when B.u is absent or momentary power down is detected. “L” when Acc is present. ON when the base is “L”.

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