Kenwood DDX7015 Service Manual page 8

DDX7015/7025/7035
DDX7045/7065
ELECTRIC UNIT (X34-316x-xx)
Ref.No. Application/Function
IC1 3-terminal regulator IC
IC3 3-terminal regulator IC
IC100 Logic IC
IC101 Logic IC
X34 board controller
IC103
microcomputer
IC200 RDS demodulator IC
IC250 Power IC
IC300 Digitally audio processor IC
Electrical volume, Selector,
IC301
NC MPX IC
IC350 Isolation amplifier IC
IC400 Logic IC
IC450,451 75Ω driver, 6dB amplifier IC
IC452 Logic IC
IC500 Isolation amplifier IC
IC501 RGB switch IC
IC550,554 4ch multiplexer
IC551 Video switch
IC552 Sync separator IC
IC553 75Ω driver + video switch
IC555 75Ω driver + video switch
IC600 Isolation amplifier IC
IC700,701 Switching ope amplifier
IC702 Operational amplifier
IC703,704 Operational amplifier
IC900 Operational amplifier
Q1,2 BU5V switch
Q3 BU5V switch
Q4 A9V switch
Q5 V5V switch
Q6 A9V power supply
Q8 SW14V switch
Q9 SW5V switch
Q10 V5V power supply
Q19 Illumination switch
Q20 ANT-CONT switch
Q21 P-CONT
8
COMPONENTS DESCRIPTION
Generates 8.4V for audio from BU14V.
Generates 5.0V for visuals from BU14V.
For audio mute control.
When BU5V goes below 3.7V, reset with output L (When microcomputer is flushed, 4.2V).
Control of X34 board, Communication with other boards and connected devices.
Demodulation of RDS signals.
Power amplifier for speaker output.
4ch hipass filter, 2ch lowpass filter.
For LX BUS
For making navigation and other remote control lines independent.
For video signals from X34 to X14.
For reversing reset signal.
For TV TUNER.
For selection of RGB signals for TV or NAVI.
For selection of audio signals for LX, NAVI, TV or AVIN.
For selection of composite signals for IC553 or AVIN. Used for detecting NTSC, PAL and
detecting rear camera.
For determination of NTSC, PAL.
For detection of visual output signal for X14 (TV/AVIN/NAVI).
For selection of visual output signal for AVOUT (DVD/TV/AVIN).
For AVIN.
For isolation of audio signal from DSP box and SW for X34 audio signal.
For 1/2VCC supply to BA3121F (LX/TV/AVIN).
For isolation of audio signal from DSP box.
For noise canceling circuit.
Turned ON when BU14V is supplied.
Turned ON when Q9 is turned ON.
Turned ON when SW14V is supplied.
Turned ON when SW14V is supplied.
Turned ON when Q4 is turned ON.
Turned ON when P-ON.
Turned ON when P-ON.
Turned ON when Q5 is turned ON.
Turned ON when illumination is turned ON.
Turned ON when TUNER is selected.
Turned ON when P-CONT is turned ON.
Operation/Condition/Compatibility