Toshiba PORTEGE 650CT User manual

650CT 1-1
1.1 Features
The Toshiba 650CT 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 computer incorporates the following
features and benefits:
❑Microprocessor
This computer uses an IntelPentium processor 133 MHz with Voltage Reduction
Technology (VRT) that operates at 2.9/3.3 volts. The math co-processor and 16 KB
cache memory are integrated into the Pentium chip.
❑Level-2 cache
A 256 KB level-2 cache memory is provided in pipe-line burst SRAM.
❑Hard disk drive
This computer has a 1.35 billion byte (1.257 GB) hard disk drive (HDD).
❑Memory
The 650CT comes standard with 16 MB of Extend Data Out (EDO) DRAM. This
includes 640 KB of conventional memory and 15744 KB of extended memory.
❑Display
The 650CT has an 11.3-inch Thin Film Transistor (TFT) color LCD which displays
800 x 600 pixels. The built-in display controller supports full color capability and up
to 1280 x 1024 resolution on an external monitor.
❑Keyboard
An-easy-to-use 84/86-key keyboard provides a numeric keypad overlay for fast nu-
meric data entry or for cursor and page control. It also includes two keys that have
special functions in Windows95. This keyboard supports software that uses a 101- or
102-key enhanced keyboard.
❑Batteries
Three different batteries are used in the 650CT: a Lithium-Ion main battery, a backup
battery (for memory backup), and an RTC battery (for the Real Time Clock).
❑Expansion memory slot
An optional 8, 16, 32, or 64 MB memory module can be installed in the memory slot.

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❑Parallel port
This port can be used to connect a Centronicscompatible printer or other parallel
device. The port supports an Extended Capabilities Port (ECP) conforming to
IEEE·1284.
❑Serial port
The serial controller is 16550UART compatible. This standard, 9-pin, serial port can
be used to connect serial devices such as a serial printer, serial mouse, or external
modem.
❑External monitor port
The female, 15-pin, D-shell connector can be connected to an external SVGA moni-
tor. This computer supports Video Electronics Standards Association (VESA) Display
Data Channel (DDC) 2B compatible functions.
❑PS/2mouse/keyboard port
Either a PS/2 compatible keyboard or a PS/2 compatible mouse can be connected to
this port.
❑PC card slot
The PC card slot can accommodate two PCMCIA Release 2.01 Type II (5.0mm)
cards or one Type III (10.5mm) card. These slots are ready for advanced cards, includ-
ing PC card 16's multifunction cards and CardBus 32-bit cards, as well as the Zoomed
Video (ZV) port, which is dedicated to high-performance video data transfer such as
MPEG video play back.
❑Docking Adapter port
This 240-pin port enables connection of an Enhanced Port Replicator II or a Desk
Station V Plus to the computer through a Docking Adapter.
The Enhanced Port Replicator II duplicates the following ports on the computer: PS/2
keyboard, PS/2 mouse, serial port, parallel port, external monitor, audio line-in,
headphone and microphone. It also provides an audio line-out joystick port and two
additional PC (Type III) card slots.
The Desk Station V Plus provides additional features to Enhanced Port Replicator II's
as follows: two PCI/ISA bus and one PCI bus expansion slots, a 5.25-inch drive bay,
a Selectable Bay, and an on-board SCSI-2 (Small Computer System Interface) con-
troller.
❑External FDD port
Allows you to connect an external FDD.

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❑AccuPoint
A pointer control stick, located in the center of the keyboard, provides convenient
control of the cursor without requiring desk space for a mouse.
❑Serial infrared port
The 650CT incorporates two infrared ports located on the front and back of the
computer. These ports are compatible with the IrDA1.1 (Infrared Data Association)
FIR (Fast Infrared) standard, which enables cableless 4 Mbps data transfer.
❑Sound system
The sound system is compatible with both Sound BlasterProand Windows Sound
System. This computer is equipped with a monoral microphone, monaural speaker,
and the following jacks: audio line-in, headphone, and microphone.
❑Internal modem (optional in some markets)
The internal modem supports V.34 data communication at 28.8Kbps, V.17 class-1
facsimile at 14.4Kbps, speakerphone and Telephone Answering Machine (TAM)
functions. The 650CT is equipped with an RJ11 modem jack to connect a telephone
line directly to the computer.
The 650CT Personal Computer is shown in Figure 1-1, and its system configuration is shown
in Figure 1-2.
Figure 1-1 650CT personal computer

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Figure 1-2 650CT system unit configuration

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1.2 System Unit Block Diagram
Figure 1-3 is a block diagram of the system unit.
Figure 1-3 System board block diagram