Grass Valley K2 Dyno Replay Controller - Manual (Page 29)

June 16, 2009 K2 Dyno Replay Controller Service Manual 29
T-bar lever assembly
T-bar lever assembly
This is the complete mechanism which includes the front panel T-bar lever and the
unit in which it is housed. In case it is damaged or otherwise inoperable, it can be
replaced separately.
Refer to “T-bar lever assembly removal” on page 57 for procedures.
Control panel UI board
This board provides the front control panel user interface for the Dyno controller,
including the following functionality:
• 21 backlit, tri-color, momentary contact tactile buttons in 3 banks
• Jog knob interface
• USB interface to PC Motherboard
• Push Button Matrix Scanner, for 21 top panel buttons
• T-bar lever A/D interface
• SPI Port to LCD screen Controller
• LED driver interface
• Button LED Dimming
• Embedded Program Flash and SRAM memory
• Display Interface
• LCD screen controller
Refer to “Control panel UI board removal” on page 60 for procedures.
LCD screen
The LCD touch screen is a 178mm (7in.) color flat panel display overlaid with a touch
screen that translates finger contact into mouse-type USB control information. The
display is a 800 x 480 resolution, 18 Bit Panel.
Refer to “LCD screen removal” on page 63 for procedures.
LCD screen inverter board
This board takes in a DC voltage and outputs a very high AC voltage to power the
display backlight. It is mounted on the rear of the LCD touch screen housing.
Refer to “LCD screen inverter board removal” on page 59 for procedures.
Front I/O board
The front I/O connector board provides a headphone jack and volume control for
audio monitoring, two front panel USB 2.0 ports, and a speaker (left channel). When
the headphone jack is active, it mutes the speaker.
Refer to “Front I/O board removal” on page 64 for procedures.