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KENWOOD KDCZ838
Service Manual


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

Description of KENWOOD KDCZ838 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 3 (click to view)
KDC-MP819/X659/Z838
COMPONENT DESCRIPTION
q SWITCH UNIT (X16-168X-XX)
Ref.No. IC1 IC2 IC3 IC4 IC5 Q1 Q2 Q3 Q4 Q6 Q7 Q8 Q9 Q10 Component Name TAR5S33 TC74HC4050AFT RS-171 BA3830F UPD703032GFA04 Application/Function Operation/Condition/Compatibility FL AVR +3.3V Output Buffer For FL control lines, 5V â 3.3V logic level shifting Remote sensor IC BPF IC BPF for the spectrum analyser indicator Panel MI-COM. DTA144EUA or UN5113 FL & Illumination +B ON/OFF control. When Q2's base goes Hi, Q1 is FL+B SW turned on, and FL+B(45V) line is supplied to the FL indicator and DTC114YUA or UN5214 the key illumination circuit. When a base goes Lo, Q3 is turned on, and PAN5V line is supplied to IC3 and IC4. DTC114EUA or UN5211 FL blanking SW When a base goes Hi, Q4 is turned on, and FL indicator is lit. DTC114YK or UN2214 SRC key illumination SW When a base goes Hi, Q6 is turned on, and SRC illumination is lit. 2SC4081 V-I converter Current driver for green LEDs 2SC4081 V-I converter Current driver for red LEDs DTA114EUA or UN5111 Key illumination Red SW When a base goes Lo, Q9 is turned on, and key illumination Red is lit. DTA114EUA or UN5111 Key illumination Green SW When a base goes Lo, Q10 is turned on, and key illumination Green is lit. DTA114EUA or UN5111 REMO SW

q ELECTRIC UNIT (X25-9240-XX)
Ref.No. IC1 IC2 IC3 IC4 IC5 IC6 IC7 IC8 IC10 IC11 IC12 IC16 IC20 IC21 IC23 IC25 Q1 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Component Name UPD703033GFA17 TDA7407 M5237ML TDA7560 TDA7401 ICL7660SIBA TC74HC02AF NJM4565M-TE2 NJM4565M-TE2 NJM4565M-TE2 NJM4565M-TE2 S-80837ANNP BA3121F BA3129F SI-8050JD BR24C02F-W 2SD2375 2SA1037K Application/Function System MI-COM. E-VOL.& N.C. MPX AVR IC Power IC High pass filter & Non-Fader volume DC/DC converter Mute logic Op. amp. Op. amp. Op. amp. Op. amp. Reset IC Isolation amplifier Switched op.amp. MECHA. AVR EEPROM CD servo AVR SW 5V Operation/Condition/Compatibility

IC is combined with Q4, and it works as the error detection, the Q4's driver. HPF(Front/Rear output), LPF, Non-Fader switching and volume function -9V AVR for pre-output amplifier 2-input NOR x 4 Amplifier for the spectrum analyser and generation of Vref. (1/2Vcc) voltage Amplifier for the front pre-outputs Amplifier for the non-fader pre-outputs Amplifier for the rear pre-outputs When BU 5V voltage is less than 3.7V, IC outputs Lo. AUX inputs isolation amplifier Input switching with AUX inputs and CD inputs DC/DC converter, +5V output for CD mechanism adapted for MP3 AVR for CD mechanism servo operation, +7.5V output. While a base goes Lo, SW 5V is supplied to the microprocessor peripheral circuits. Q4 is combined with IC3, and it works as the power supply of +8.0V output. When Q5's base goes Hi, Q6 is turned on, and A.+8V AVR is working. When Q8's base goes Hi, Q7 is turned on, and A.+8V AVR, CD servo AVR and A.+10V AVR are working. For PAN5V on/off switching. When a base goes Lo with panel attached to the set, Q9 is turned on, and PAN5V is supplied to the panel. When Q11's base goes Hi, AVR outputs +9V. When Q12's base goes Hi, Q13 is turned on, and FL/Illumination AVR is working. When a base goes Lo, Q14 is turned on, and control pulse signal is outputted. When vehicle small lamps turn on, Q15's base goes Hi, and it is turned on. When Q17's base goes Hi, AVR outputs +10V.

2SA2057 A.+8V AVR DTC144EUA or UN5213 A.+8V AVR SW DTA124EUA or UN5112 DTA124EUA or UN5112 SW14V DTC124EUA or UN5212 2SB1427 2SA2057 2SC4081 DTC124EUA or UN5212 DTA124EUA or UN5112 DTA123JK or KRA105S DTC144EUA or UN5213 2SB1443 2SC4081 PAN5V SW FL/Illumination AVR FL/Illumination AVR SW EXT. AMP CON. SW Dimmer detection SW A.+10V AVR

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KDC-Z838 KENWOOD
Owner's Manual

Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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