Q-Box - Sony KDP-51WS550 Training Manual

The DVI Decoder, IC7004 receives the three channels of digital video data and outputs analog component video
(Y, PB, PR) to CN7002/pins 10, 8 and 6 respectively.

Q-Box

The Q-Box processes ATSC (off-the-air digital broadcast) broadcast, Memory Stick and I-Link signals. The
boards included in the Q-Box are the QM, QI and QT. The QM performs all Q-Module video and audio processing.
The QI board is the I-Link interface and the QT is the "off-the-air" or terrestrial (from antenna switch) signal
interface. The Memory Stick feature uses an external interface board QH, which is connected to the Q-Box via
USB cable.
The Q-Box outputs the 1080i signal format for all selected inputs.
The Q-Box is replaced as an assembly (including QM, QI, and QT boards) if found defective.
The following text and diagrams will help in troubleshooting and determine a possible defective Q-Box. Figure 2-
3 is a block diagram showing all the external connections to the Q-Box.
i.LINK FRONT
i.LINK REAR
i.LINK REAR
MEMORY
STICK
INPUT
DIGITAL AUDIO OUT
REAR
The Q-Box processes the following digital signals:
HDTV Terrestrial Signal (RF)
Memory Stick Images or Movies
I-Link Data
The digital signals are processed and D/A converted by the Q-Box processor on the QM board. The Component
Video (Y/PB/PR) and Audio (LT/RT) analog signals are then output to the UA (AV Switcher). Digital audio is also
output from the Q-Box on the rear (Digital Optical connector) of the unit in PCM/Dolby Digital format.
QI
i.LINK
BOARD
INTERCONNECT
USB
PCM
FIGURE 2-3 - Q-BOX INTERNAL BLOCK DIAGRAM
QT
ATSC
TUNER
BOARD
INTERCONNECT
CN7300
QM
MICRO-CONTROL
AUDIO/VIDEO
PROCESSING
CN7309
7
FROM
RF
ANT.SWITCH
TO UA BOARD
ANALOG VIDEO/AUDIO OUT
(Y/Pb/PR)
(LT & RT)
TO MA & G2 BOARDS
POWER/DATA
COMMUNICATIONS
2. New Features
TVP16.2-3 1/30/04