Components Description - Kenwood DDX8017 Service Manual

DDX8017/8027/8027Y
DDX8037/8047/8067
VIDEO CONTROL UNIT (X14-955/956x-xx)
Ref. No. Application / Function
IC1 DC-DC power supply IC
IC2 DC-DC power supply IC
IC3 DC-DC power supply IC
IC9 Regulator IC
IC80 Regulator IC
IC81 Regulator IC
IC82 Regulator IC
IC101 E2PROM
IC103 Logic IC (AND)
µ-com IC
IC104
IC105 Resetting IC
IC107 Motor driver IC
IC108 Logic IC (AND∗4)
Signal processing IC for driving color
IC237
liquid crystal panel
IC238 Logic IC (Inverter)
IC239 Color differentiation signal 1H-DELAY
IC240 RGB switch
IC400 Ope amp IC
IC401 Regulator IC
IC402 Audio DAC
IC403 Logic IC (Inverter)
IC470 CPLD
IC500 Regulator
IC520 FLASH ROM
IC560 SDRAM
IC601 MPEG decoder
IC640 Clock generator
IC641 Logic IC (D-FF)
IC650 LPF and Driving IC for video signal
IC651 Regulator
IC652 Video encoder
IC654 Video switch
IC700 GRITT IC
IC701 Regulator
IC750,751 SDRAM
IC770 Logic IC (NOR)
IC771 Logic IC (D-FF∗4)
IC772 Logic IC (Inverter)
8

COMPONENTS DESCRIPTION

For controlling BL8.5V and ±7V
For controlling SW6.5V and MECHA7.5V
For controlling SW3.3V and SW2.5V
2V generation for IC601
Backup 3.3V generation
SW5V generation
V3.3V generation
Memory for µ-com
AND for remote controller and wired remote controller
For controlling the main unit
For resetting µ-com
Tilted control of tilting mechanism
3.3V → 5V conversion
RGB signal generation for liquid crystal
For blank signal reversal coming from X35
For delaying 1H color differential signals when PAL
For switching RGB signals coming from DVD signal and X34
For audio LPF
5V generation for audio
For converting digital signals into analog signals
SPDIF driver
Audio DAC control
5V generation for DVD mechanism
For MPEG decoder control program
RAM for temporary storage of decoded signal
IC for decoding MPEG encoded signal
27M, 36.864MHz clock generation
13.5MHz is generated by frequency dividing from 27MHz
For RGB and composite signals of DVD
V5V generation
Conversion of digital video signals into analog signals
For switching DVD composite signal and composite signal from X34
Graphic signal generation
IC700 1.8V generation
GRITT-IC storage RAM
GRITT-IC video clock frequency dividing
GRITT-IC video clock frequency dividing
GRITT-IC video clock frequency dividing
Operation / Condition / Compatibility