Toshiba Tecra 700CS User manual

700 Series
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1.1 Features
The Toshiba 700 Series 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 is optimized for Windows®95 and supports
plug and play technology. The computer incorporates the following features and benefits:
❑Microprocessor
This computer uses an Intel Pentium®processor 120MHz with Voltage Reduction
Technology (VRT) that operates at 2.9 volts.
❑Disk storage
This computer has a 1.2GB HDD pack.
❑MultiBox
This feature provides for connection of either a Floppy Disk Drive (FDD) or an
optional CD-ROM drive.
The FDD supports 3.5-inch 2HD (1.44 MB) disks and 2DD (720 KB) disks. The
drive can be connected to an external FDD port with an attachment when the CD-
ROM drive is installed in the MultiBox.
A full-size, quadruple-speed CD-ROM drive contains an ATAPI (AT attachment
packet interface) interface controller, and supports the following formats: audio CD,
photo CD, CD plus, and ISO 9660.
❑Memory
The 700CS comes standard with 8 MB of DRAM, and the 700CT comes standard
with 16 MB of DRAM.
❑Display
The 700CS has an 11.3-inch Dual-scan Supertwist Nematic (DSTN) color LCD which
displays 800 x 600 pixels. The 700CT has an 11.3-inch full color, Thin Film Transis-
tor (TFT) color LCD which displays 800 x 600 pixels. The built-in display controller
supports full color capability and up to 1024 x 768 resolution on an external CRT.
❑Keyboard
An easy-to-use 82/84-key keyboard provides a numeric keypad overlay for fast nu-
meric data entry or for cursor and page control. This keyboard supports software that
uses a 101- or 102-key enhanced keyboard.

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700 Series
❑Batteries
Three different batteries are used in the 700 Series computers: 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, or 32 MB memory module can be installed in the memory slot.
❑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) and Enhanced Parallel
Port (EPP) conforming to IEEE·1284.
❑Serial port (9-pin)
The serial controller is 16550UART compatible. This standard, 9-pin, serial port can
be used to connect devices such as a serial printer, serial mouse, or external modem.
❑RGB port
The female, 15-pin, D-shell connector can be connected to an external CRT (SVGA
monitor), which is recognized automatically. It supports Video Electronics Standards
Association (VESA) Display Data Channel (DDC) 2B compatible functions.
❑Ext. Keyboard port
A PS/2-compatible keyboard can be connected to this port.
❑Mouse port
A PS/2-compatible mouse can be connected to this port.
❑PC card slot
The PC card slot supports up to two Personal Computer Memory Card International
Association (PCMCIA) standard version release 2.0 cards. The upper and lower slots
can each accommodate one Type II (5.0 mm) card, or the lower slot can accommo-
date one Type III (10.5 mm) card when the upper slot is empty.
❑Desk Station V port
This port enables connection of a Desk Station V, which expands the following fea-
tures: two PCI/ISA bus and one half size PCI bus slots, two PCMCIA slots (Type III),
a 5.25-inch drive bay, an additional MultiBox, and an on-board SCSI-2 (small com-
puter system interface) host adaptor.

700 Series
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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.
❑Infrared port
The 700 Series incorporates an IrDA1.0 (115.2Kbps supported) standard infrared
transmitter and receiver.
❑Sound System
A Sound BlasterTM ProTM compatible sound system provides the capability to record
sound and play it back with a built-in microphone and stereo speakers. The sound
system is equipped with a stereo headphone jack and a stereo microphone jack.
The 700 Series Personal Computer is shown in Figure 1-1, and its system configuration is
shown in Figure 1-2.
Figure 1-1 700 Series personal computer

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700 Series
Figure 1-2 700 Series system unit configuration

700 Series
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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

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700 Series
The system board is composed of the following major components:
❑One Intel Pentium 120MHz 64-bit microprocessor with VRT.
It operates at 120 MHz and 2.9 volts.
❑Standard RAM
8 MB, four 1Mx16-bit chips (700CS)
16 MB, eight 1Mx16-bit chips (700CT)
3.3 volt operation
No parity bit
Access time 10 ns
Data transfer is 64-bit width
❑BIOS ROM (Flash E2PROM)
256 KB (one 256Kx8-bit chip) memory
-128 KB are used for the system BIOS
-64 KB are used for the VGA BIOS
-8 KB are used for the plug and play data area
-16 KB are used for boot
-40 KB are reserved
Access time 120 ns
Data transfer is 8-bit width
❑Video RAM
1 MB (Two 256Kx16-bit DRAM)
5 volt operation
Access time 60 ns
❑Optional memory
One expansion memory slot is available for 8, 16, and 32 MB memory modules, which
consist of some 1 MBx16-bit chips.
Total maximum memory size is 40 MB for the 700CS and 48 MB for the 700CT (if a
32 MB memory module is installed).
3.3 volt operation
No parity bit
Access time 10 ns
Data transfer is 64-bit width
❑Data buffer Gate Array
This gate array has the following functions:
-Power down control
-Memory data bus control
❑PCI bridge Gate Array
This gate array has the following functions:
-CPU control
-DRAM control
-Internal PCI bridge

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❑ISA bridge Gate Array
This gate array has the following components:
- Two DMACs 82C37 equivalent
- Two PICs 82C59 equivalent
- One PIT 82C54 equivalent
- SMI port control
- RTC control
- Flash memory control
- Internal ISA bus bridge
- High speed ISA bus control
- Power management control
- Suspend/Resume control
❑PCMCIA Controller Gate Array
This gate array has the following functions:
-PCMCIA memory card control
-PCMCIA I/O card control
❑Docking interface Gate Array
This gate array has the following functions:
-Docking interface
❑Miscellaneous Gate Array
This gate array has the following functions:
-Communication controller
•Communication with KBC
•I2C bus control
Communication with power supply microprocessor
Communication with Desk Station microprocessor
Communication with EEPROM
•Communication register set
-Others
•PWM control
Beep volume
•Joystick control
•Super I/OTM control
•FDD control
•Speaker control
•Universal I/O control
❑Video Controller
Chips & Technologies F65548 is used.
The video controller controls the internal TFT/DSTN color LCD and external CRT
(SVGA compatible CRT).

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700 Series
❑Keyboard Controller (KBC)
One M38802M4 chip is used.
The KBC, which includes the keyboard scan and keyboard interface controllers,
controls the internal keyboard, external keyboard, and PS/2 mouse.
❑Real Time Clock (RTC)
A T9934 chip with 128 bytes of memory is used. Fourteen (14) bytes are used for the
calendar and clock, and the remaining 114 are used for the system configuration data.
❑Super I/OTM
National Semiconductor PC87336VLJ has the following functions:
-Two UARTs 16550A equivalent (One SIO is used for SIR.)
-One FDC µPD765A equivalent
-One parallel port control supported ECP/EPP
❑Audio Drive
One ESS688 Audio Drive®chip is used. This chip contains a D/A converter and an
A/D converter that offer 16-bit stereo sound.
One YMF262 chip (OPL3) is used. This chip is an FM synthesizer chip.

700 Series
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1.3 3.5-inch Floppy Disk Drive
The 3.5-inch FDD is a thin, high-performance, reliable drive that supports 720-KB (format-
ted) 2DD and 1.44-MB (formatted) 2HD disks.
The FDD is shown in Figure 1-4, and its specifications are listed in Table 1-1.
Figure 1-4 3.5-inch FDD
Table 1-1 3.5-inch FDD specifications
Item 2-MB mode 1-MB mode
Storage capacity (KB)
Unformatted 2,000 1,000
Formatted 1,440 720
Number of heads 2 2
Number of cylinders 80 80
Access time (ms)
Track to track 3 3
Average 181 181
Head settling time 15 15
Recording track density (tpi) 135 135
Data transfer rate (Kbps) 500 250
Rotation speed (rpm) 300 300
Recording method Modified Frequency Modulation (MFM)

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700 Series
1.4 2.5-inch Hard Disk Drive
The HDD is a random access, nonvolatile storage device. It has a non-removable 2.5-inch
magnetic disk and mini-winchester type magnetic heads.
The 700 Series supports a 1.2 GB HDD.
The HDD is shown in Figure 1-5, and its specifications are listed in Table 1-2.
Figure 1-5 2.5-inch HDD
Table 1-2 2.5-inch HDD specifications
Item (MK2720FC) (DPRA-21215)
Storage capacity (GB)
Formatted 1,216 1,215
Cylinder 2358 2358
Heads 16 16
Sectors 63 63
Bytes per sector 512 512
Rotation speed (rpm) 4200 4900
Recording method 8-9 RLL 1-7 RLL

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1.5 Keyboard
The 82-key (USA) or 84-key (European) keyboard is mounted on the system unit. The
keyboard is connected to the keyboard controller on the system board through a 25-pin flat
cable.
The 700 Series pointer control stick, located in the center of the keyboard, provides
convenient control of the cursor without requiring desk space for a mouse. The keyboard is
shown in Figure 1-6.
See Appendix E for optional keyboard configurations.
Figure 1-6 Keyboard

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700 Series
1.6 DSTN Color LCD (700CS)
The DSTN Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent
Lamp (FL), and an FL inverter board.
1.6.1 DSTN Color LCD Module
The 700CS DSTN color LCD is backlit and supports 800 x 600 pixels with a built-in display
controller. This controller includes the functions of Video Graphics Array (VGA) and Super
VGA (SVGA) for an external display.
The LCD receives vertical and horizontal synchronizing signals, 16-bit data signal, 8-bit upper
block data signal, 8-bit lower block data signal, and a shift clock for data transmission. All
signals are CMOS-level compatible.
The DSTN LCD is shown in Figure 1-7, and its specifications are listed in Table 1-3.
Figure 1-7 DSTN color LCD
Table 1-3 DSTN color LCD specifications
Item Specifications
Number of pixels (pixels) 800 x 600
Dot pitch (mm) 0.26 x 0.26
Display area (mm) 264.5 (W) x 193.5 (H)
Contrast (Typically) 25:1
FL current (mA) 5/3
(Bright/Semi-bright)

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1.6.2 Fluorescent Lamp (FL) Inverter Board for DSTN Color LCD
The FL inverter board supplies high frequency current to light the LCD’s Fluorescent Lamp.
Specifications for the FL inverter are listed in Table 1-4.
Table 1-4 FL inverter board specifications for the DSTN color LCD
Status Item Specifications
Input Voltage (V) 4 to 5.5
Power (W) 4.25
Output Voltage (Vrms) 1,100
Current (mA) 5/3.0

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700 Series
1.7 TFT Color LCD (700CT)
The TFT Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent Lamp
(FL), and an FL inverter board.
1.7.1 TFT Color LCD Module
The 700CT TFT color LCD supports 800 x 600 pixels with a built-in display controller. This
controller includes the functions of Video Graphics Array (VGA) and Super VGA (SVGA)
for external display.
The LCD receives 18-bit data signals, data enable signals, and shift clock for data transmis-
sion. All signals are CMOS-level compatible.
The TFT LCD is shown in Figure 1-8, and its specifications are listed in Table 1-5.
Figure 1-8 TFT color LCD
Table 1-5 TFT color LCD specifications
Item Specifications
Number of pixels (pixels) 800 x 600
Dot pitch (mm) 0.2865 (W) x 0.2865 (H)
Display area (mm) 229.2 (W) x 171 (H)
Contrast 100:1 (minimum)
FL current (mA) 6.0/4.0/3.6/2.4*
(Bright/Semi-bright)
*NOTE: The FL currents at power on are listed below:
Bright Semi-bright
AC adapter connected 6 mA 3.6 mA
AC adapter not connected 4 mA 2.4 mA
(The settings at power on do not change even if the AC adapter
connection changes.)

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1.7.2 Fluorescent Lamp (FL) Inverter Board for TFT Color LCD
The FL inverter board supplies high frequency current to light the LCD’s Fluorescent Lamp.
Specifications for the FL inverter are listed in Table 1-6.
Table 1-6 FL inverter board specifications for the TFT color LCD
Status Item Specifications
Input Voltage (V) 4 to 5.5
Power (W) 4.25
Output Voltage (Vrms) 1,100
Current (mA) 6.0/4.0/3.6/2.4*
*NOTE: The FL currents at power on are listed below:
Bright Semi-bright
AC adapter connected 6 mA 3.6 mA
AC adapter not connected 4 mA 2.4 mA
(The settings at power on do not change even if the AC adapter
connection changes.)

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700 Series
1.8 Power Supply
The power supply supplies four kinds of voltages to the system board, has one microproces-
sor, and operates at 2 MHz. It contains the following functions:
1. Determines if the AC adapter or battery is connected to the computer.
2. Detects DC output and circuit malfunctions.
3. Controls the speaker and brightness.
4. Controls the Battery capacity icon, Power on icon and AC adapter icon on the
status indicator panel.
5. Turns the battery charging system on and off and detects a fully charged battery.
6. Determines if the power can be turned on and off.
7. Provides more accurate detection of a low battery.
8. Calculates the remaining battery capacity.
9. Detects RI (Ring Indicator) signal for the Auto Power On Function.
The power supply output ratings are specified in Table 1-7.
Table 1-7 Power supply output ratings
DC Regulation Maximum
Use Name voltage tolerance current Ripple
(V) (%) (mA) (mV)
System logic, FDD, HDD B5V +5.0 ±5 3,400 100
Display panel, back light
and PCMCIA
CPU, RAM PCMCIA B3V +3.3 ±5 3,800 60
Flash ROM, PCMCIA P12V +12.0 ±5 100 240
System logic MCV +5.0 ±5 5 100

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1.9 Batteries
The computer has three types of batteries:
❑Main battery pack
❑Backup battery
❑Real Time Clock (RTC) battery
The removable main battery pack is the computer’s main power source when the AC adapter
is not attached. The backup and main batteries maintain the state of the computer when
AutoResume is enabled.
Battery specifications are listed in Table 1-8.
Table 1-8 Battery specifications
Battery Name Material Output Voltage Capacity
Main battery Lithium-Ion 10.8 V 5,600 mAh
Backup battery Nickel Metal Hydride 7.2 V 35 mAh
RTC battery Nickel Metal Hydride 3.6 V 35 mAh
1.9.1 Main Battery
Battery Charging Control
Battery charging is controlled by a microprocessor that is mounted on the power supply. This
microprocessor controls whether the charge is on or off and detects a full charge when the AC
adapter and battery are attached to the computer. The system charges the battery using quick
charge or trickle charge.
❑Quick Battery Charge
When the AC adapter is attached, there are two types of quick charge: quick charge 1
when the system is powered off, and quick charge 2 when the system is powered on.
Table 1-9 Time required for quick charges
Status Charging time
Quick charge 1 About 4 hour
(power off)
Quick charge 2 4.5 to 10.5 hours
(power on)

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700 Series
NOTES 1: Using quick charge 1, the system CPU automatically stops the
charge after five hours and 30 minutes regardless of the condition
of the battery.
2: The time required for quick charge 2 is affected by the amount of
power the system is consuming. Use of the fluorescent lamp and
frequent disk access diverts power and lengthens the charge time.
If any of the following occurs, the battery quick-charge process stops.
1. The battery becomes fully charged.
2. The AC adapter or battery is removed.
3. The battery or output voltage is abnormal.
❑Trickle Battery Charge
When the main battery is fully charged and the AC adapter is attached, the power
supply microprocessor automatically changes quick charge 1 or 2 to trickle charge.
❑Detection of full charge
A full charge is detected only when the battery is charging at quick charge, and under
any of the following conditions:
1. The current in the battery charging circuit drops under the fixed limit.
2. The charging time exceeds the fixed limit.
3. The battery’s temperature is over 60°C.

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1.9.2 Backup Battery
The backup battery maintains data for AutoResume. The power source used to back up the
AutoResume data is determined according to the following priority:
AC adapter > Main battery > Backup battery
The backup battery is charged by the main battery or AC adapter. Table 1-10 lists the charg-
ing time and data preservation period of the backup battery.
Table 1-10 Backup battery charging/data preservation time
Status Time
Charging Time 7 Hours with AC adapter
14 Hours without AC adapter
Data preservation period (full charge) 2 Hours
1.9.3 RTC battery
The RTC battery provides power to keep the current date, time and other setup information in
memory while the computer is turned off. Table 1-11 lists the charging time and data
preservation period of the RTC battery.
Table 1-11 RTC battery charging/data preservation time
Status Time
Charging Time (Power On) 40 Hours
Data preservation period (full charge) 1 month

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700 Series