System Outline - Toshiba TLP411E Technical Training Manual

1. SYSTEM OUTLINE

The system microcomputer has features as shown below.
In considering easy maintenance for specification modifi-
cation, etc. an external program ROM is employed. The
program is also developed in considering use of structured
notation, parts modularity, and multi filling system.
Major functions of the system microcomputer are as fol-
lows.
(1) System control
• Power reset process
• Nonvolatile memory control process
• Remote control reception process
• RS-232C transmission and reception process
• Status reading process
• On-screen display process
(2) Normal control
• Power
• Input switch
• Sound volume control
• Menu
• Mute
• Display
• Adjusting value reset
• Focus
• Zoom
ON/OFF
UP/DOWN
UP/DOWN
ON/OFF
ON/OFF
UP/DOWN
UP/DOWN
5-2
(3) Adjustment control
• Video controls (high & low brightness ratio,
brightness, color density, tint, sharpness)
• Panel adjustments (V position, H position, phase,
clock)
• Projection adjustments (Front projection, front
projection with ceiling mount, rear projection, rear
projection with ceiling mount)
• Mode adjustments (Enlarge, wide, OSD mute, user
fixing)
• Adjustment data saving process
• Adjustment data default setting
(4) Adjustment control at shipping
• Video sub adjustments (RGB gain)
• Drive adjustments (each item)
Fig. 5-1 shows the system block diagram.