Toshiba Satellite Pro 400CS User manual

400 Series
1-1
1.1 Features
The 400CS/400CDT (400 Series) is one of the lightest and most advanced portable computers
available. Utilizing advanced technology and high-speed components, the 400 series offers
multimedia functions, excellent display legibility, battery operation, and IBM PC/AT compat-
ibility. The 400 series system unit has the following features:
❑Microprocessor
An Intel Pentium® processor 75 MHz with Voltage Reduction Technology (VRT)
that operates at 75 MHz and 2.9 volts.
❑Disk storage
An internal 810 million byte (770 MB) Hard Disk Drive (HDD). A 3.5-inch Floppy
Disk Drive (FDD) supports 2HD (1.44 MB) floppy disks and 2DD (720 KB) floppy
disks. The FDD can also be installed in an attachment (option with 400CS) for con-
nection as an external device.
❑CD-ROM Drive (option with 400CS)
A full-size, quadruple-speed CD-ROM drive module can be installed instead of the
FDD module. The CD-ROM drive contains an ATAPI (AT attachment packet inter-
face) interface controller, and supports the following formats: audio CD, photo CD,
and ISO 9660.
❑Memory
Standard with 8 MB of CMOS RAM. This includes 640 KB of conventional memory
and 7360 KB of extended memory, which can be utilized as expanded memory com-
patible with the Lotus/Intel/Microsoft Expanded Memory Specification (LIM-EMS).
❑Display
The 400CS has a 10.4" full color, Dual-scan Supertwist Nematic (DSTN) LCD 640 X
480 pixels. The 400CDT has a 10.4" full color, Thin Film Transistor (TFT) LCD 640
X 480 pixels. The built-in display controller supports Video Graphics Array (VGA)
for the internal LCD and Super VGA (SVGA) for the 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. The computer’s keyboard supports
software that uses a 101- or 102-key enhanced keyboard.

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400 Series
❑Batteries
Three different batteries: a Li-Ion main battery, a backup battery (for memory
backup), and a RTC battery (Real Time Clock).
❑Expansion memory slot
An optional 8, 16, or 32 MB memory module can be installed in the memory slot.
❑Parallel port
Can be used to connect a Centronics compatible printer or other parallel device;
supports ECP (Enhanced Capabilities Port) conforming to IEEE·1284.
❑Serial port (9-pin)
The serial controller is 16550UART compatible. This port can be used to connect such
serial devices as a serial printer, serial mouse, or external modem.
❑RGB port
The female, 15-pin, D-shell connector can be connected to an external SVGA monitor.
❑Ext. Keyboard/Mouse port
Either a PS/2 compatible keyboard or a PS/2 compatible mouse can be connected to
this port. The computer automatically recognizes which device is connected.
❑FDD port
Enables a connection of the external FDD attachment if the CD-ROM module is
installed inside the system unit.
❑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 accommodate one
Type III (10.5 mm) card when the upper slot is empty.
❑Enhanced port replicator port
Enables connection of an enhanced port replicator. The enhanced port replicator has
two PC card slots (Type III), and expands connections to the following devices: PS/2
keyboard, PS/2 mouse, serial port, parallel port, external CRT, joystick/MIDI port,
audio line-in, audio line-out, headphone, external FDD, AC-in, and AC-out.

400 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
This machine incorporates an IrDA1.0 (115.2Kbps supported) standard infrared
transmitter and receiver.
❑Sound System
A Sound BlasterTM ProTM compatible sound system provides capability to record sound
and play it back with a built-in microphone and speaker. The sound system is equipped
with a volume control dial, headphone jack, microphone jack, and audio line-in jack.

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400 Series
The 400 Series Personal Computer is shown in figure 1-1.
Figure 1-1 400 series personal computer
The 400 system configuration is shown in figure 1-2.
Figure 1-2 400 system unit configuration

400 Series
1-5
1.2 System Unit Block Diagram
Figure 1-3 is a block diagram of the 400 series system unit.
Figure 1-3 400 series system board block diagram

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400 Series
The 400 series system board is composed of the following major components:
❑One Intel Pentium processor 75 MHz with VRT 64-bit microprocessor
Intel Pentium processor operates at 75 MHz and 2.9 volts.
❑Standard RAM
8 MB, four 1Mx16-bit chips
3.3 volt operation
No parity bit
Access time 70 ns
Data transfer is 64-bit width
EDO (extended data output) supported
❑BIOS ROM (Flash EEPROM)
128 MB (one 128Kx8-bit chip) memory
64 KB in the ROM are used for system BIOS
40 KB in the ROM are used for VGA BIOS
24 KB in the ROM are reserved
Access time 150 ns
Data transfer is 8-bit width
❑Video RAM
1 MB (Two 256Kx16-bit DRAM)
5 volt operation
❑Optional memory
One expansion memory slot is available for 8, 16, and 32 MB memory modules, which
may consist of 1 MBx16-bit chips
Total maximum memory size is 40 MB (if a 32 MB memory module is installed)
3.3 volt operation
No parity bit
Access time 60 ns
Data transfer is 64-bit width
EDO (extended data output) supported
❑One super integration (SI)
The following components:
- Two DMACs 82C37 equivalent
- Two PICs 82C59 equivalent
- Two UART 16550 equivalent
- One PIT 82C54 equivalent
- One FDC TC8565 equivalent
- One VFO TC8568 equivalent
- One I/O port decode
- One SIO port control
- One printer port control supported ECP
- One FDD control
- One speaker control
- One power communication control

400 Series
1-7
❑System Controller Gate Array (SCPCNT-GA)
This gate array has the following functions:
CPU control
SMI control
CPU clock control
Memory control
64-bit bus memory control
32-bit bus memory control
Bus control
64-bit data bus <==>32-bit data bus
32-bit local bus control
Address latch control
I/O register control
Processing speed control
❑ISA Bus Controller Gate Array (SISCNT3-GA)
This gate array has the following functions:
Bus control
32-bit data bus <==> 16-bit data bus
ISA bus interface control
ISA bus access control
DMAC control
DMA address generation
I/O control
Suspend/Resume sequence
Memory control
IAS bus interface control
Refresh address generation
I/O register control
Suspend/Resume sequence
❑PCMCIA Controller Gate Array
This gate array has the following functions:
PCMCIA memory card control
PCMCIA I/O card control
❑I/O Controller Gate Array (IOCNT-GA)
This gate array has the following functions:
Internal Communication controller
KBC, main CPU communication register file
KBC interrupt controller
KBC communication controller
I2C bus control
Others Speaker volume adjust PWM control
Sound board interface
BIOS-ROM interface
SIM control
IrDA (SIR) control

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400 Series
❑Video Controller
Chips & Technologies F65546 is used
Controls internal TFT/STN color LCD and external SVGA compatible CRT
❑Keyboard Controller (KBC)
One M38802M4 chip is used
This KBC includes the keyboard scan controller and keyboard interface controller
The KBC controls the internal keyboard, external keyboard, PS/2 mouse
❑Real Time Clock (RTC)
One T9934 chip is used
The T9934 has 128 of bytes memory
Fourteen bytes of memory are used for the calendar and clock, the remaining 114
bytes are used for the system configuration data

400 Series
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1.3 3.5-inch Floppy Disk Drive
The 400 series 3.5-inch Floppy Disk Drive (FDD) is a thin, high-performance reliable drive
that supports 720-KB (formatted) 2DD and 1.44-MB (formatted) 2HD 3.5-inch floppy disks.
The 400 series FDD is shown in figure 1-4.
Figure 1-4 3.5-inch FDD
The specifications for the FDD are listed in table 1-1.
Table 1-1 3.5-inch FDD specifications
Item 2-MB mode 1-MB mode
Storage capacity (KB)
Unformatted 2,000 1,000
Formatted 1,311 737
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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400 Series
1.4 2.5-inch Hard Disk Drive
The 770 MB Hard Disk Drive (HDD) is a random access non-volatile storage device. It has a
non-removable 2.5-inch magnetic disk and mini-winchester type magnetic heads.
The 400 series is shown in figure 1-5.
Figure 1-5 2.5-Inch HDD
Specifications for the HDD are listed in table 1-2.
Table 1-2 2.5-inch HDD specifications
Items (MK1926FCV)
Storage capacity (MB)
Formatted 815
Number of disks 3
Data heads 6
Data surfaces 6
Bytes per sector 512
Rotation speed (rpm) 4200
Recording method 8-9 RLL

400 Series
1-11
1.5 Keyboard
The 82-(USA) or 84-(European) keyboard is mounted on the 400 series system unit. The
keyboard is connected to the keyboard controller on the system board through a 25-pin flat
cable. The 400 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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400 Series
1.6 CD-ROM Drive
The 400 series internal CD-ROM drive accommodates either 12 cm (4.72") or 8 cm (3.15")
CDs (option with 400CS). It provides high-performance, quadruple-speed play (reads 300KB
per second). This drive supports the following formats:
Audio CD
Photo CD
ISO 9660
The 400 series CD-ROM drive is shown in figure 1-7.
Figure 1-7 CD-ROM
The specifications for the CD-ROM drive are listed in table 1-3.
Table 1-3 CD-ROM specifications
Item 1✕mode 2✕mode 4✕mode
Data Capacity (bytes/block)
Mode 1 2,048 2,048 2,048
Mode 2 2,336 2,336 2,336
Transfer Rate
Sustained Block transfer speed (blocks/s) 75 150 300
Sustained Data transfer speed (kbytes/s)
Mode 1 150 300 600
Mode 2 171 342 684
ATAPI Burst (Mbytes/s) 3.33* 3.33* 3.33*
Access time (ms)
Average Random Access 360 255 210
Average Random Seek 250 210 185
Average Full Stroke Access 540 450 355
Rotation speed (rpm) 200 to 530 400 to 1,060 800 to 2,120
Data Buffer Capacity (Kbytes) 128 128 128
*(PIO mode 0)

400 Series
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1.7 STN Color LCD (400CS)
The STN Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent Lamp
(FL), and an FL inverter board.
1.7.1 STN Color LCD Module
The 400CS STN color LCD is backlit and supports 640x480 pixels with a Video controller.
This video controller includes the functions of Video Graphics Array (VGA).
The 400CS LCD receives vertical and horizontal synchronizing signals, 16-bit data signal, 8-
bit upper block data signal, 8-bit lower block data signal, and has a shift clock for data
transmission. All signals are CMOS-level compatible.
The STN LCD is shown in figure 1-8.
Figure 1-8 STN color LCD
The specifications for the LCD are listed in table 1-4.
Table 1-4 STN color LCD specifications
Item Specifications
Number of Dots (dots) 640x480
Dot pitch (mm) 0.33x0.33
Display area (mm) 217.2 (W)x164.4 (H)
Contrast (Typically) 20:1
FL current (mA) 5.0/3.0
(Bright/Semi-bright)
FL frequency (KHz) 40

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400 Series
1.7.2 STN Color Fluorescent Lamp (FL) Inverter Board
The FL inverter board supplies high frequency current to light the LCD’s Fluorescent Lamp.
The specifications for the FL inverter are listed in table 1-5.
Table 1-5 STN color FL inverter board specifications
Item Specifications
Input Voltage (VDC) 5
Power (W) 4.25
Output Voltage (VAC) 1,100
Current (mA) 5.0
Frequency (KHz) 40

400 Series
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1.8 TFT Color LCD (400CDT)
The TFT Color Liquid Crystal Display (LCD) contains an LCD module, a Fluorescent Lamp
(FL), and an FL inverter board.
1.8.1 LCD Module
The 400CDT TFT color LCD supports 640x480 pixels with an internal display controller.
This controller includes the functions of Video Graphics Array (VGA) and Super VGA
(SVGA) for external display.
The 400CDT LCD receives 18-bit data signals, data enable signals, and has a shift clock for
data transmission. All signals are CMOS-level compatible.
The TFT LCD is shown in figure 1-9.
Figure 1-9 TFT color LCD
The specifications for the LCD are listed in table 1-6.
Table 1-6 TFT color LCD specifications
Item Specifications
Number of dots (dots) 640x480
Dot pitch (mm) 0.33 (W)x0.33 (H)
Display area (mm) 211.2 (W)x158.4 (H)
Contrast 100:1 (minimum)
FL current (mA) 4.6/2.8
(Bright/Semi-bright)
FL frequency (KHz) 40

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400 Series
1.8.2 Fluorescent Lamp (FL) Inverter Board
The FL inverter board supplies high frequency current to light the LCD’s Fluorescent Lamp.
The specifications for the FL inverter are listed in table 1-7.
Table 1-7 FL inverter board specifications
Item Specifications
Input Voltage (VDC) 5
Power (W) 4.25
Output Voltage (VAC) 1,100 (r.m.s.)
Current (mA) 4.6/2.8
Frequency (KHz) 40

400 Series
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1.9 Power Supply
The power supply supplies five kinds of voltages to the 400 series system board. The power
supply has one microprocessor, which operates at 500 KHz, and performs the following
functions:
1. Determines if the AC cable or battery is connected to the computer.
2. Detects AC output and circuit malfunctions.
3. Controls the LED icon and speaker.
4. Turns the battery charging system on and off and detects a fully charged battery.
5. Determines if the power can be turned on and off.
6. Provides more accurate detection of a low battery.
7. Calculates the remaining battery capacity.
The power supply output rating is specified in table 1-8.
Table 1-8 Power supply output rating
DC Regulation
Use for Name voltage tolerance
(%)
System logic, FDD, HDD, VCC +5 ±5
Display
CPU CPUV +2.9 ±5
Flash ROM, PCMCIA 12V +12 ±5
CPU, RAM, GA B3V +3.3 ±0.3V
VRAM, GA B5V +4.7 ±5

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400 Series
1.10 Batteries
The 400 series has three types of batteries:
❑Main battery pack
❑Backup battery
❑Real Time Clock (RTC) battery
Battery specifications are listed in table 1-9.
Table 1-9 Battery specifications
Battery name Material Output voltage Capacity
Main battery Lithium-Ion 10.8 V 1,200 mAH
Backup battery Nickel Metal Hydride 7.2 V 110 mAH
RTC battery Nickel Metal Hydride 3.6 V 30 mAH
1.10.1 Main Battery
The removable main battery pack is the computer’s main power source when the AC power
cord is not attached. The main battery recharges the backup battery. The backup and main
battery maintain the state of the computer when you enable AutoResume.
❏Battery Icon
The Battery icon is located on top of the back rim of the 400 series. The icon shows
the status of the removable battery pack.
The status of each can be determined by color:
Orange The battery is being charged. (AC power cord is attached.)
Green The battery is fully charged. (AC power cord is attached.)
Blink orange The battery is low when the power is on.
No light Under any other conditions, the LED does not light.

400 Series
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1.10.2 Battery Charging Control
Battery charging is controlled by a power supply microprocessor that is mounted on the
power supply. The microprocessor controls whether the charge is on or off and detects a full
charge when the AC power cord and battery are attached to the computer. The system
charges the battery using quick charge or trickle charge.
❏Quick Battery Charge
When the AC power cord is attached, there are two types of charge: quick charge
when the system is powered off and trickle charge when the system is powered on.
Table 1-10 Time required for quick charges
Charging time
Power off About 2 to 3 hours
Power on About 5 to 8 hours
If one of the following occurs, the battery quick-charge process stops:
1. The battery becomes fully charged.
2. The battery is removed.
3. The battery or AC output voltage is abnormal.
4. The charge current is abnormal.
❏Trickle Battery Charge
When the main battery is fully charged and the AC power cord is attached, the power
supply microprocessor automatically changes from quick charge to trickle charge.

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400 Series
1.10.3 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 power > Main battery > Backup battery
The backup battery is charged by the main battery or AC power cord. Table 1-11 shows the
charging time and data preservation period of the backup battery.
Table 1-11 Backup battery charging/data preservation time
Time
Charging Time Power On 20 H
Power Off 20 H
Data preservation period (full charge) 4 H
1.10.4 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 1-12 shows the charging time and data
preservation period of the RTC battery.
Table 1-12 RTC battery charging/data preservation time
Time
Charging Time With AC power 48 H
or main battery
Data preservation period (full charge) Doesn’t charge