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KENWOOD KRC278RA
Service Manual


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

Description of KENWOOD KRC278RA 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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I was very pleased with the service provided and was surprised at how good the quality was of the manual. I thought it may be a third generation copy or so, but it is as good as the websites that charge 3 times this much. I repair some electronics for family and friends without charge, so this is perfect for me. Thank you very much.
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I needed a service manual as the display on my oscilloscope was very dim. I thought I'd give owner-manuals.com a try, as they advertised a huge number of manuals. Sure enough they had one listed. I bought it hoping it would be useful... actually, I bought it hoping it would be readable! I've had manuals from online sources in the past, and been very disappointed. Not this time! An excellent manual, complete, and very readable. Using it I fixed my 'scope, and as such the manual was an investment that paid off manyfold. Do I have any complaints? One very minor one - The circuit diagrams could have been scanned at a higher resolution, as some of the details were a little difficult to make out - not impossible, just not as easy as my old eyes would like! Overall, I'm very satisfied with my manual, and I will certainly be using this company again. Well done.
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I Have looked for this manual for quiet a while now, I have finally found it here. I believe this is the only place they have them in a very nice scan, pages are very clear to read, some of the pages are a bit tilted but overall it is great to have this manual available for purchase. Thanks
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This is quiet a rare manual, I Have looked for this manual for quiet a while now, I have finally found it here. I believe this is the only place they have them in a very nice scan, Excellent guide: very clear, enabling us to print readable diagram overall it is great to have this manual available for purchase. This is a complete service manual no pages are missing. Thanks

Text excerpt from page 3 (click to view)
KRC-13R,178R,23R,278R,280R
COMPONENT DESCRIPTION
SYNTHESIZER UNIT (X14-613x-xx)
REF. No.
IC1 IC2 IC3 IC4 IC5 IC6 IC7 Q49 Q50 Q51,52 Q53 Q54,55 Q56,57 Q58,59 Q60,61 Q150 Q151 Q153 Q201 Q203 Q260 Q261 Q301 Q320 Q350 Q351 Q352 Q353

FUNCTION
SYSTEM µ-COM ELECTRIC VOLUME MUTE POWER IC EQUALIZER AMPLIFIER RESET RDS DECODER ACC DETECTION SW BACK-UP DETECTION SW BACK-UP 5V DRIVER P.ON 5V SW 8V SW 8V DRIVER ILLUMINATION +B SW ILLUMINATION +B DRIVER ELECTRIC VOLUME MUTE SW SVR FORCED DISCHARGE SW PRE OUT MUTE SW FM +B SW AM +B SW MOTOR +B SW MOTOR +B DRIVER CHANGER RESET SW PANEL 5V SW P-CON. DRIVER P-CON. PROTECTION SW P-CON. PROTECTION INHIBIT SW P-CON. SW

OPERATION
Controls system. Controls sound volume. Selects each source. Controls each mute output. Amplifies power so that the speaker can drive audio signal. Equalizer amplifier for cassette tape sound. Resets power supply. Decodes RDS signal. Works when ACC operation stops. Works when the back-up voltage comes less than 9.2V. Works when the back-up works. Works when the power comes. Works when the power comes. Works when the power comes. Works when the power comes. Works when the power comes. Works when the back-up voltage detection or the changer mute or µ-com mute works. Works when the amplifier mute works. Works when the back-up voltage detection or the changer mute or µ-com mute works. Works when FM mode is being selected. Works when AM mode is being selected. Works when TAPE mode is being selected. Works when Q260 works. Works when power supply is being reset and IC6 works. Works when the back-up works and panel is on the unit. Stops during POWER OFF and ALL OFF modes. Works when P-CON is being short-circuited on GND. Inhibits protection SW function when P-CON works momentary. Stops during POWER OFF and ALL OFF modes. Works when the back-up voltage detection or the changer mute or µ-com mute works. For RDS decorder (IC7). Works when receiving FM signal. Stops when seeking FM signal. For noise level detection.

Q450,451 PRE OUT MUTE SW Q500 AUDIO OUT BUFFER Q501,502 AFC TIME CONSTANT SW Q503 NOISE BUFFER

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