Kenwood DDX8017 Service Manual page 13

Ref. No. Application / Function
Q209 For audio muting
Q250 AM power supply SW
Q252 For AM power supply
Q403,404 SW for audio selector control
Q405,406 SW for audio selector control
Q500 For reversing resetting signal voltage
Q800 MUTE 0 terminal control SW
VIDEO UNIT (X35-458/459x-10)
Ref. No. Application / Function
IC1 Inverter control IC
IC101 DC/DC converter IC
IC203 VCOM amp
IC300 Three states buffer
IC301 Timing controller IC
IC302 AND
IC303 PLL LPF
IC601 Remote controller light receptor IC
Q1 Dimmer SW
Q2,3 Inverter driver
Q5 5V AVR
Q101 Switch
Q102 Switch
Q202,203 VCOM driver
Q300 Switch
Q301 VCO
Q302 Touch panel X1 SW
Q303 Touch panel Y1 SW
Q304 Touch panel X0 SW
Q305 Touch panel Y0 SW
Q306 Touch panel Y0/Y1 SW
Q307,308 Buffer
Q601,602 Switch
Q604,605 Switch
Q701 Switch
DAUGHTER UNIT (X89-274/279x-11)
Ref. No. Application / Function
IC2 OP amp
IC3 OP amp
COMPONENTS DESCRIPTION
Audio muting of AVOUT left channel
Comes ON when AM source is selected
Audio 8V is supplied when AM source is selected
Converts IC413 µ-com controlled terminal voltage: 5V → 8V
Converts IC414 µ-com controlled terminal voltage: 5V → 8V
Reverses signal in order to obtain resetting signal for TV tuner
MUTE 0 audio muting control
Control and drive of inverter circuit for backlight
±12V power supply for VCOM amp, -12.0V/+18.5V LCD power supply
VCOM signal amplification amp
Start pulse switching SW
LCD module control
V.SYNC delay buffer
LPF for PLL control (VT voltage control)
Remote controller light receptor
ON/OFF control signal of PWM and put on dimmer on backlight
Inverter circuit driving
5V power supply for inverter control IC
Switch for controlling DC/DC converter
Switch for controlling DC/DC converter
VCOM signal buffer
For switching IC205
For PLL oscillation
X1 SW: Comes on at panel touch detection or at X-axis input and impresses voltage
Y1 SW: Comes on at Y-axis input and impresses voltage
X0 SW: Comes on at X-axis input and impresses voltage
Y0 SW: Comes on at Y-axis input and impresses voltage
Y0/Y1 SW: Comes on at Y-axis input and goes off at X-axis input
For PLL clock
SI blinking switch
Hard resetting switch
DISC Illumination switch
For audio signal amplification (Center, Sub-woofer)
For audio signal amplification (Rear)
DDX8017/8027/8027Y
DDX8037/8047/8067
Operation / Condition / Compatibility
Operation / Condition / Compatibility
Operation / Condition / Compatibility
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