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13
KVT-727DVD/727DVDY
Ref. No.
Application / Function
Operation / Condition / Compatibility
Q250
AM power supply SW
Comes ON when AM source is selected
Q252
For AM power supply
Audio 8V is supplied when AM source is selected
Q403,404
Audio selector control SW
Converts IC413
µ
-com controlled terminal voltage: 5V
→
8V
Q405,406
Audio selector control SW
Converts IC414
µ
-com controlled terminal voltage: 5V
→
8V
Q500
For reversing resetting signal voltage
Reverses signal in order to obtain resetting signal for TV tuner
Q800
MUTE 0 terminal control SW
MUTE 0 audio muting control
●
VIDEO UNIT (X35-4480-10)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC1
Inverter control IC
Control and drive of inverter circuit for backlight
IC101
DC/DC converter IC
±
12V power supply for VCOM amp, -12.0V/+18.5V LCD power supply
IC203
VCOM amp
VCOM signal amplification amp
IC300
Three states buffer
Start pulse switching SW
IC301
Timing controller IC
LCD module control
IC302
AND
V.SYNC delay buffer
IC303
PLL LPF
LPF for PLL control (VT voltage control)
IC401
Dimmer sensor IC
Auto Dimmer detection sensor
Q1
Dimmer SW
ON/OFF control signal of PWM and put on dimmer on backlight
Q2,3
Inverter driver
Inverter circuit driving
Q5
5V AVR
5V power supply for inverter control IC
Q202,203
VCOM driver
VCOM signal buffer
Q300
Switch
For switching IC205
Q301
VCO
For PLL oscillation
Q302,303
Buffer
For PLL clock
Q501
Touch panel Y1 SW
Y0 (X0) SW: Comes ON when inputting to Y (X)-axis and goes OFF when inputting X (Y)-axis
Q502
Touch panel X0/Y1 SW
Y1 SW: Comes ON when inputting to Y-axis and impresses voltage
Q503
Touch panel X1/Y0 SW
X1 SW: Comes ON when detecting panel touch/X-axis input and impresses voltage
Q601
Switch
OPEN/CLOSE key ILLUMI blinking switch
●
DAUGHTER UNIT (X89-2740-10)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC2
OP amp
For audio signal amplification (Center, Sub-woofer)
IC3
OP amp
For audio signal amplification (Rear)
IC4
OP amp
For audio signal amplification (Front)
IC5
3-terminal regulator
5V is output from 8V
IC6
Audio DAC
D/A conversion of audio signal (Front, Rear, Center, Sub-woofer)
IC7
A/D converter
A/D conversion of audio signal (Lch, Rch)
IC9
DSP
Processing of computing for Dolby 5.1ch, dts etc.
COMPONENTS DESCRIPTION