Electric Unit (X34-315X-Xx) - Kenwood KVT-715DVD Service Manual

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ELECTRIC UNIT (X34-315x-xx)

Ref No. Application / Functions
IC1 AVR
IC3 AVR
IC4 AVR
IC100 Logic IC
IC101 Reset IC
IC103 System control
IC200 RDS decoder IC
IC250 Power amp
IC300 Digital audio processor
IC301 Audio system IC
IC350 Amp
IC400 Logic IC
IC450,451 Amp
IC452 Logic IC
IC500 Amp
IC501 SW
IC550,554 4ch multiplexer
TE
L 13942296513
IC 551 Video SW
IC552 Sync sep.
IC553 75Ω driver & video sw
IC555 75Ω driver & video sw
IC600 Amp
IC602~604 OP AMP
IC702 OP AMP
IC900 OP AMP
Q1 BU5V sw
Q2 BU5V sw
Q3 SW5V sw
Q4 A9V sw
Q5 V5V sw
Q6 AVR (A9V)
Q8 AVR (SW14V)
Q9 AVR (SW5V)
Q10 SW (V5V)
Q11 SW (±9V)
Q12 SW (±9V)
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Q13~18 AVR
Q19 Illumination sw
Q20 ANT-CONT SW
.
Q21 SW
Q22 SW
COMPONENTS DESCRIPTION
AUDIO8.4V AVR (for audio circuit)
VIDEO5V AVR (for video circuit)
±9.0V AVR (for 5V pre out circuit)
Audio muting control
When BU voltage less than 3.7V, this IC output is L (Rsest)
System microprocessor (control for X32 unit, communication for another unit)
RDS signal decoder
Audio power amp (50W x 4)
DSP for audio (4ch high pass filter, 2ch low pass filter)
Electrical volume, audio selector, noise chancellor, FM mpx
Isolation amp (for LX BUS)
Isolation for navigation signal line and another common line
75Ω video driver & 6dB amp (X34 unit to X14 unit)
Reset signal inverter
Isolation amp (for TUNER)
RGB selector (TV or NAVI line)
Select for audio signal (LX or NAVI line, TV or AV IN)
Select for composite video signal (IC553 or AV IN) : Use for NTSC/PAL detector and back camera detect
Sync separator (place for NTSC or PAL format signal)
Select for video signal to X14 unit (TV, AV IN, NAVI)
Select for video signal to AV out terminal (DVD, TV, AV IN)
Isolation amp (for AV IN)
For 5V pre out
1/2VCC for IC350 AND IC500 (LX, TV)
For noise canceled
Q1 is ON When supplied for BU14V
Q2 is ON When supplied for BU14V
Q3 is ON When Q9 is ON
Q4 is ON When supplied for SW14V
Q5 is ON When supplied for SW14V
Q6 is ON When Q4 is ON
Q8 is ON When P ON line is ON
Q9 is ON When P ON line is ON
Q10 is ON When Q5 is ON
Q11 is ON When Q12 is ON
Q12 is ON When supplied for SW14V
-9V output
x ao u163
Q19 is ON when Car Illumination sw is ON
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ANT-cont is ON when select for TUNER
i
Q21 is ON when P CONT is ON
Q22 is ON when Q21 is ON
KVT-715DVD,725DVD/-B,735DVD
KVT-745DVD,765DVD,815DVD
2 9
8
Operation / Condition / Compatibility
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3 6 7 1 3 1 5
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9 4 2 8
0 5 8 2 9 9 4 2 8
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9 9
9 9
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