B1-Board (Video Processing); Qm-Board; Qt-Board; Optical Block - Sony KDS-50A2000 Training Manual

B1-Board (Video Processing)

The circuits located on the B1-Board perform all video processing
functions. It is the WEGA engine. The following circuits are included on
the board.
• Composite/Component Processor (CCP)
• Digital Reality Creator (DRC)
• Image Format Processor (IFP)
• WE Microprocessor (part of the IFP)

QM-Board

The QM-Board performs the following functions.
• ASTC Signal Processing and Control
• ATI Microprocessor
o The ATI microprocessor becomes the Main microprocessor
(the TV Micro on the A1-Board is the standby micro) after
initial power on. All user settings are store in an EEPROM
on the QM-Board.

QT-Board

The QT-Board contains the ATSC and NTSC Tuner. The ATSC IF signal
and NTSC demodulated video and audio signals are outputs from this
board.

Optical Block

The Optical Block includes the C-Board, prisms, mirrors, SXRD panels
and lenses necessary to process and modulate the lamp light and display
the video information on the screen.
TVP-23
2. PCB & Component Locations and Descriptions

C-Board

The C-Board circuits perform the following primary functions.
• Gamma Correction
• White Balance Correction
• SXRD Panel Drive
• Panel Temperature Sensor

S1-Board

Ambient Temperature Sensor IC

S2-Board

Lamp Temperature Sensor IC

T-Board

Lamp Door Switch

H1-Board

• Channel Up/Down Button
• Volume Up/Down Button
• Input Select Button
• Menu Button

H2-Board

Front LED's (Timer, Lamp, Power)

H3-Board

Front AV Input (Component, Composite, Audio LR)
25