Kenwood DNX4280BT Service Manual page 4

DNX4280BT/5180/5280BT/5380/5380M
/5380BT/5580BT/6040EX/6180/6480BT/6980
● VIDEO CONTROL UNIT (X15-154x-xx)
Ref. No. Application / Function
IC1 DCDC controller IC
IC2 DCDC converter IC
IC3 DCDC converter IC
IC4 Regulator
IC5 Regulator
IC6 Regulator
IC7 Regulator
IC8 Regulator
IC9 Regulator
IC200 Analogue IC
IC201 Regulator
IC202 AND Logic IC
IC203 Voltage detect IC
IC204 EEPROM
IC205 MCU IC
IC206 AND Logic IC
IC207 Analogue IC
IC400 OP-AMP X 2
IC401 Regulator
IC402 Regulator
IC403 Regulator
IC404 Audio DA convertor
IC405 Audio DA convertor
IC406 Video SW 8IN 5OUT
IC408 Voltage detect IC
IC409 3state Buffer x2 IC
IC410 EXOR Logic IC
Q1~3 SW
Q4 LOAD SW FET
Q5 BU voltage detect (Hi-side)
Q6,7 SW
Q8 BU voltage detect (Low-side)
Q9~13 SW
Q14,15 SW
Q16 SW
Q17 FET
Q18 FET
Q19 LOAD SW
Q20 SW
Q21 LOAD SW
Q22 SW
Q23 LOAD SW
4
COMPONENTS DESCRIPTION
6.5V/1.5V DCDC converter
D5V/V5V/V5V_DVD DCDC converter
BU3.3V DCDC converter
BU1.8V Regulator IC
SW1.8V Regulator IC
D1.2V Regulator IC
NAND3.3V Regulator IC
SW1.8V_DA Regulator IC
P5V/FAN5V Regulator IC
VIDEO ISO, AMP for iPod
BU3.3V_SYS Regulator IC
TV_SDATA Buffer
Reset signal generate at 3.0V
EEPROM 1Kb
System control IC
Video Mute control
VIDEO ISO, AMP for AVIN
For BT Audio LPF
BT3.3V Regulator IC
A5V Regulator IC
USB5V Regulator IC
Audio DAC for NAVI voice
Audio DAC for USB audio
Composite signal selector
USB5V over current detect
BT control signal buffer
BT control signal buffer
SW14V control
SW14V ON/OFF
BU_DET signal control
BU_DET signal control
BU_DET signal control
BU_DET signal control
DET_MUTE signal generation
IC3 Forced PWM control
DCDC SW FET D1.5V
DCDC SW FET 6.5V
G3.3V ON/OFF
Q19 control
D3.3V ON/OFF
Q21 control
D3.3V_DVD ON/OFF
Operation / Condition / Compatibility