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KENWOOD KDCC669
Service Manual


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

Description of KENWOOD KDCC669 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 would not plug this machine in without finding a manual like this. In addition to setup and normal operating instructions, it has troubleshooting flowcharts, diagrammed mechanical adjustments, and schematics to beat the band. The tech I hand it to would be thrilled to find solder side PCB diagrams with component outlines superimposed, pinouts for every IC chip, and line drawings of transistors, with labeled legs. As for printing quality, this may be a copy of a copy, but even the finest print when enlarged is very legible. There is a bit of grayed print over a few pages, as if a wet page were placed over it, but the print is still very legible. If you could borrow an original manual and get it printed and bound for 4 to 6 times the cost, you could get better quality. In that case you wouldn't be here. For price, utility, and availability I am rating this manual highly.
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Text excerpt from page 5 (click to view)
KDC-C469/Y/FM/FMA KDC-C669/Y

COMPONENT DESCRIPTION
Ref. No. Q30 Component Name DTC114YUA Application/Function Eccentric disc SW Operation/Condition/Compatibility When an eccentric disc is detected, Q30 is turned on, and a preceding beam is made to be delayed. While spindle servo or disc loading/eject mode is selected, a base goes “Hi”, and Q31 is turned on.

Q31

DTC124EUA

VIN SW

● RF MODULATOR UNIT
Ref. No. IC1 IC2 IC4 IC101 IC102 IC301 IC302 Q1 Q2 Q3 Q4 Component Name UPC7805AHF LC72329-9B24 NJM78L05UA NJM2060M NJM4565MD BA1405F NJM4565MD DTC124EK 2SA1782(T,U) DTC124EK DTC143TK Application/Function BU 5V AVR System MI-COM. 5V AVR Isolation amp. Low pass filter FM ST modulator 1/2 VCC driver, ALC detection amp. ACC detection POWER SW When Q4 is turned on, Q1 is turned on during ACC applied. When Q3’s base goes “Hi”, Q2 is turned on, and RF modulator circuit is working. When RESET SW on display unit is pressed, Q4, Q1 and Q6 are turned off, and IC2 is holding. When RESET SW on display unit is pressed, Q5 is turned off, and SYSTEM RESET signal is outputted to CD changer. When RESET SW on display unit is pressed or ACC is OFF, Q6 is turned off, and IC2 is holding. FM modulator output / Vehicles antenna input switching. When a base goes “Hi”, FM modulator output is selected. Power supply for RF amplifier Operation/Condition/Compatibility While BACKUP is applied, AVR outputs +5V. System control. Power supply for FM modulator and RF amplifier.

Reset SW

Q5

DTC143TK

CH RESET SW

Q6

DTA124EK

Hold detection SW

Q8 Q9 Q101 Q201 Q303 Q304 Q305 Q306 Q307 Q308 Q309 Q310

DTC143TK 2SC4640(T,U) 2SK2158 2SK2158 2SA1162(GR) 2SK2158 2SK2158 2SK508L 2SC2714(Y) 2SK2158 2SK2158 2SK2158

Relay driver Ripple filter ALC control SW Pilot mix amp. Level control SW Level control SW RF oscillator buffer RF amp. Mode (1/2) SW Audio mute Mode (1/2) SW

Level 1/2 : OFF, Level 3/4 : ON Level 2/4 : OFF, Level 1/3 : ON

Mode 1 : ON, Mode 2 : OFF POWER ON mode : OFF, POWER OFF mode : ON Mode 1 : OFF, Mode 2 : ON

● DISPLAY UNIT
Ref. No. IC1 IC2 Q1 Q2 Q3 Q4 Q5 Component Name LC75852W PNA4602M DTC144EK DTB123YK DTA144EK DTC144EK DTA144EK Application/Function LCD driver with key-matrix Remote control light senser LED ON/OFF SW Key-matrix permition SW IC2 ON/OFF SW When Q1’s base goes “Hi”, Q2 is turned on, and LED is turned on. Ready on key-matrix When Q4’s base goes “Hi”, Q5 is turned on, and 5V is supplied to remote control sensor. Operation/Condition/Compatibility

5

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