Toshiba T2150 series Maintenance Manual

1.1 Features
The Toshiba T2150 series Personal Computer uses extensive Large Scale Integration (LSI),
and Complementary Metal-Oxide Semiconductor (CMOS) technology to provide minimum
size and weight, low power usage, and high reliability. The T2150 series incorporates the
following features and benefits:
Microprocessor
The Intel DX4-75 microprocessor operates at 75 MHz and 3.3 Volts.
Math co-processor
The math co-processor is stored in the DX4 microprocessor.
Cache memory
The 16 KB cache memory is stored in the DX4 microprocessor.
Disk storage
The T2150 series has an internal 260 million bytes (250 MB) (TEG only) HDD and
520 million bytes (500 MB) HDD.
An external 3.5-inch Floppy Disk Drive (FDD) supports 2HD (1.44 Mbytes) floppy
disks and 2DD floppy disks (720 Kbytes) floppy disks.
CD-ROM Drive
The internal CD-ROM drive is full-size and double-speed. This drive can run 12cm or
8cm disks without an adapter, and supports the following formats: Audio CD, Photo
CD, and ISO 9660 formats.
Memory
Standard memory includes 4 MB of CMOS RAM and comes with 8MB. This in-
cludes 640 KB of conventional memory with 3264 KB of extended memory for the
T2150CDS and 7360 KB for the T2150CDT, which can be utilized as expanded
memory compatible with the Lotus/Intel/Microsoft Expanded Memory Specification
(LIM-EMS).
Display
The T2150CDS has a 10.4" full-color, Supertwist Nematic (STN) LCD with 640x480
pixels.
The T2150CDT has a 10.4" full-color, Thin-Film Transistor (TFT) LCD with
640x480 pixels.
The T2150 series internal display controller supports Video Graphics Array (VGA)
for internal display and Super VGA (SVGA) for external display.
T2150 Series 1-1