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KENWOOD KDC4021Y
Service Manual


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

Description of KENWOOD KDC4021Y 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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This manual is accurate and of high quality. It is only volume 2 of the service manual. This is schematic, parts lists, and exploded mechanical drawings. The theory of operation and the diss-assembly instructions are in volume 1. The unit can be tricky to dis-assemble portions of so the volume 1 manual can be important. The product description of the manual is accurate but it does not say anything about volume 1 and the image of the front page does clearly say Volume 2.
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 AU-D101 SANSUI Service Manual by Adrian Davies;
It has all the information you will need to fix it. The main circuit diagram is only A4 but being a PDF, you can print it to any size - I did it on two sheets of A3 and it didnt lose any detail - just made it readable when pinned up above the bench. I've found the fault, just need to buy some obscure bits to get it going again! I cant fault the process, I paid for the manual in the morning and it was ready to download by lunch time.

Text excerpt from page 4 (click to view)
KDC-3020R/ 4021/V/Y/YV

MICROCOMPUTER’S TERMINAL DESCRIPTION / ADJUSTMENT
Pin No. 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Pin Name LOE/LIM SW MOSW LO/EJ M-STOP M-RST M-MUTE RESET REMO R-CLK CH-REQC LOS SW KEY-REQ 12EJE SW Vss0 VDD1 X2 X1 IC XT2 XT1 VDD0 AVREF0 S-METER PHONE NOISE NC AVCONT I/O I O I/O O O I I I I I I I I I I I I I O O Purpose CD mechanism Down & Limit detection CD mechanism motor switching Lo/Ej switching Mechanism COM stop output Mechanism COM reset output Mechanism COM mute input System reset input Remote control input RDS CLOCK 5-wire CH request (CH) Loading SW detection Key input detection 12 cm disc detection GND potential (for ports) Positive power supply (for other parts than ports and analog circuitry) Main system clock oscillation Main system clock oscillation Flash uCOM write Not used Not used (Connected to 5V power supply) Positive power supply (for ports) 5V power supply (A/D converter reference voltage) S-meter input Hi-Z L Hi-Z L H Hi-Z Hi-Z Hi-Z Hi-Z, L when RDS is not available. Hi-Z, L when CH is not available. Hi-Z Hi-Z Hi-Z Hi-Z Processing in STBY Mode

Navigation muting 2.5V or more, Telephone muting 1V or less. Hi-Z, L when TEL is not available. FM noise detection Not used A/D reference voltage control Hi-Z, L when RDS is not available. L L

ADJUSTMENT
No. ITEM INPUT SETTINGS TUNER (RECEIVER) SETTINGS ALIGNMENT POINTS ALIGN FOR

FM SECTION 98.1MHz 1 SD 0 dev 35dBµ (ANT input) AM SECTION 990kHz (1) SD 0% mod 35dBµ (ANT input) TEST MODE : ON TEST MODE : OFF TEST MODE : ON AM 990kHz While holding preset “1” key, press and Preset “1” key, and preset “6” key hold preset “6” key for a few seconds. “ADJ OK” is good. “ADJ NG” is not good. TEST MODE : ON FM 98.1MHz While holding preset “1” key, press and Preset “1” key, and preset “6” key hold preset “6” key for a few seconds. “ADJ OK” is good. “ADJ NG” is not good.

While holding the FM key and preset “6” key, reset the unit. Reset the unit.

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