Kenwood DDX512 Service Manual page 9

Ref. No. Application / Function
Q804 Transistor
● VIDEO UNIT (X35-4890-10)
Ref. No. Application / Function
IC1 Inverter control IC
IC101 NOT
IC102 DC/DC converter IC
IC200 Regulator
IC201 Op-amp
IC202 D fl ip fl op
IC203 γ T/C
IC204 OR
IC205 Regulator
IC206 Buffer
IC207 FROM
IC208 Regulator
IC501 AND
IC700 Remote controller photoreceptor Detection for remote controller
Q1 5V constant voltage
Q2 Dimmer SW
Q3 SW
Q4,5 Inverter Driver
Q100 -10V regulator
Q101 -10V regulator control
Q201,202 Buffer
Q400 Buffer
Q401 Buffer
Q450 SW
Q451 Buffer
Q500 Touch panel X0 SW
Q501 Touch panel Y0 SW
Q502 Touch panel X1 SW
Q503 Touch panel Y0/Y1 SW
Q504 Touch panel Y0 SW
Q600 SW
Q601 SW
Q602 Buffer
COMPONENTS DESCRIPTION
X15 SW-REG PSTART
Control and drive of the inverter circuit for the back light
Reverse
+12.5V/-12.0V power supply for VCOM amplifi er and +15.0V power supply for LCD
2.5V regulator
For VCOM amplifi er
LCD dot clock timing
Control of LCD module
For V_MUTE
5.3V regulator
5V→3.3V level conversion
For Mstar FW
5.3V regulator
3.3V→5V level conversion
5V power supply for inverter control IC
Turn on or off in response to the PWM control signal to dimmer the back light
SW to change the free run frequency for inverter control IC
Drive of the inverter circuit
LCD-10V regulator
LCD-10V regulator
For VCOM current amplifi cation
CVBS2
CVBS1
SW to be turned on or off by NTSC/PAL signal and to change the fi lter constants
For VCOM automatic adjustment
X0 SW: Turn on in response to X axis input and apply voltage
Y0 SW: Turn on in response to Y axis input and apply voltage
X1 SW: Turn on in response to detection of the panel touch or X axis input and apply voltage
Y0/Y1 SW: Turn on in response to Y axis input and turn off in response to X axis input
Y0 SW: Turn on in response to Y axis input and apply voltage
RGB_LED SW (green)
RGB_LED SW (red)
AUX
DDX5022/5022Y/5032/5032M/512/52RY
DNX5120/512EX/5220/5220BT
Operation / Condition / Compatibility
Operation / Condition / Compatibility
9