Kenwood DDX7019 Service Manual page 8

DDX7019/7029/7029Y/7039
DNX7100/7200
● VIDEO UNIT (X35-4730-10)
Ref. No. Application / Function
IC1 Inverter control IC
IC100 DC/DC converter IC
IC102 Mono-multi
IC103 NOT
IC300 AND
IC302 Timing controller IC
IC303 PLL LPF
Q1 5V constant voltage
Q2,3 Inverter driver
Q4 Dimmer SW
Q5 Inverter frequency switching switch
Q302 Buffer
Q303 VCO
Q500 Touch panel X1 SW
Q501 Touch panel X0 SW
Q502 Touch panel Y1 SW
Q503 Touch panel Y0 SW
Q504 Touch panel Y0/Y1 SW
● DIGITAL I/O UNIT (X88-2020-12)
Ref. No. Application / Function
Fixed Current Limit
IC100
Power Distribution Switch
IC104 Exclusive OR Gate
Low Dropout Voltage
IC105
Linear Regulator
IC106 System-On-Chip Processor
IC108 Inverter
IC200 Triple Inverter
IC201 Octal Bus Transceiver
IC202,203 SDRAM 256Mbit
IC205 Octal Bus Transceiver
IC207 iPod Authentication Coprocessor
IC211 NOR Flash Memory 128Mbit
IC301 Stereo DAC
IC302 Color TV signal encoder
IC305 Dual OP-Amp.(LPF)
IC309 On-Screen Display Controller
IC316 Triple Inverter
IC322 CPLD
IC332 Low Dropout Voltage Regulator
IC336 Triple Schmitt Inverter
IC337 Triple Schmitt Inverter
8
COMPONENTS DESCRIPTION
Control and drive of the inverter circuit for the back light
+12.5V power supply for VCOM amplifi er, and -12.0V/+18.5V power supply for LCD
Delay 5V power supply for DC/DC IC
Reverse
Buffer to delay V.SYNC
Control of LCD module
LPF for PLL control (VT voltage control)
5V power supply for inverter control IC
Drive the inverter circuit.
Turn on or off in response to the PWM control signal to dimmer the back light.
SW to switch the free run frequency for inverter control IC
For PLL clock
For PLL oscillation
X1 SW: Turn on in response to detection of the panel touch or X axis input and apply voltage
X0 SW: Turn on in response to X axis input and apply voltage
Y1 SW: Turn on in response to Y axis input and apply voltage
Y0 SW: Turn on in response to Y axis input and apply voltage
Y0/Y1 SW: Turn on in response to Y axis input and off in response to X axis input.
Large current distribution switch for USB1
EP_SYNC (composite sync) output
SW3.3V → 1.8V (for EP9307IRZ)
Media Processor
E_HSYNC Buffer
Sub Clock Buffer
Flash Memory data line switching (DA0~7)
SDRAM for work memory
Flash Memory data line switching (DA8~15)
iPod Authentication
Flash Memory for program data and graphic data
Audio signal digital/analog converter
Graphic signal digital/analog converter
Stereo DAC Output LPF
On-Screen Display analog signal output
Dot Clock(14.4MHz) Buffer
2/3 frequency dividing and PAL thinning control (compression processing circuit)
A8V → A5V(for Stereo DAC and LPF)
VSY, HSY Buffer
CPV, STH Buffer
Operation / Condition / Compatibility
Operation / Condition / Compatibility