Toshiba 110CS - Satellite - Pentium 100 MHz Maintenance Manual
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1.1
Features
The 110 series computer is one of the lightest and most advanced portable computers avail-
able. Utilizing advanced technology and high-speed components, the computer offers
multimedia functions, excellent display legibility, battery operation, and IBM PC/AT com-
patibility. The unit's features are:
Microprocessor
A Pentium processor with Voltage Reduction Technology (VRT) that operates at 100
MHz and 3.3/2.9 volts.
Memory
Standard with 8 MB of CMOS RAM. This includes 640 KB of conventional memory
and 7360 KB of extended memory.
Hard Disk Drive (HDD)
An internal 810 million byte (772 MB) HDD.
Floppy Disk Drive (FDD)
A 3.5-inch FDD supports 2HD (1.44 MB) floppy disks and 2DD (720 KB) floppy
disks.
Display
The 110CS has an 11.3-inch Dual-scan Supertwist Nematic (DSTN) color LCD with
800 x 600 pixels. The 110CT has an 11.3-inch Thin-Film Transistor (TFT) color
LCD with 800 x 600 pixels. The built-in display controller supports 640 x 480
resolution with 16M colors capability and up to 1024 x 768 resolution with 256
colors on an external CRT.
Keyboard
An easy-to-use 82/84-key keyboard provides a numeric keypad overlay for fast
numeric data entry or for cursor and page control. The keyboard supports software
that uses a 101- or 102-key enhanced keyboard.
Batteries
Three different batteries: main battery, backup battery (for memory backup), and Real
Time Clock (RTC) battery.
110 Series
1-1
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Summarization of Contents
1.1 Features
Microprocessor
Details the Pentium processor, Voltage Reduction Technology (VRT), clock speed, and voltage.
Memory
Covers standard 8 MB CMOS RAM, including conventional and extended memory.
Hard Disk Drive (HDD)
Specifies the internal 810 million byte (772 MB) HDD.
Floppy Disk Drive (FDD)
Describes the 3.5-inch FDD supporting 2HD and 2DD formats.
Display
Details 110CS DSTN and 110CT TFT color LCDs, resolutions, and external CRT.
Keyboard
Outlines the 82/84-key keyboard features, layout, and compatibility.
Batteries
Mentions three battery types: main, backup, and Real Time Clock (RTC).
Expansion Memory Slot
Covers installation of optional 8, 16, or 32 MB memory modules.
Parallel Port
Details the Centronics compatible printer port supporting ECP/IEEE-1284.
Serial Port (9-Pin)
Describes the 16550UART compatible serial port for device connection.
External Monitor Port
Specifies the 15-pin D-shell connector for external SVGA monitors.
External Keyboard/Mouse Port
Notes the PS/2 compatible port for keyboard or mouse connection.
PC Card Slot
Covers support for PCMCIA standard version 2.0 cards (Type II/III).
Enhanced Port Replicator Port
Mentions the port for connecting an enhanced port replicator.
AccuPoint
Describes the pointer control stick for cursor navigation.
1.6 DSTN Color LCD (110CS)
1.6.1 DSTN Color LCD Module
Details the DSTN color LCD, its resolution, and video controller.
1.6.2 DSTN Color FL Inverter Board
Lists specifications for the FL inverter board powering the LCD's fluorescent lamp.
1.7 TFT Color LCD (110CT)
1.7.1 TFT Color LCD Module
Describes the TFT color LCD, its resolution, and video controller.
1.7.2 TFT Color FL Inverter Board
Lists specifications for the FL inverter board powering the LCD's fluorescent lamp.
1.9 Batteries
Main battery pack
Details the main battery pack, its role, and recharge function.
Backup battery
Explains the function of the backup battery for AutoResume data.
Real Time Clock (RTC) battery
Describes the RTC battery's role in maintaining date and time.
Battery Icon
Explains the meaning of the battery icon colors for charging status.
Backup Battery
Details charging time and data preservation for the backup battery.
Real Time Clock (RTC) Battery
Provides charging time and data preservation for the RTC battery.
2.1 Troubleshooting
Field Replaceable Units (FRUs)
Lists the FRUs covered for troubleshooting: System Boards, VGA Board, etc.
Tools
Lists necessary tools for troubleshooting procedures: Diagnostics Disk, screwdrivers, etc.
2.2 Troubleshooting Flowchart
Initial Checks
Describes pre-flowchart checks: password, OS, optional equipment, floppy drive status.
Error Detection and Procedures
Guides troubleshooting based on diagnostic test results (System, Floppy, Hard Disk, etc.).
2.3 Power Supply Troubleshooting
Procedure 1: AC IN Icon Check
Checks the AC IN icon status for power connection and supply issues.
Procedure 2: Error Code Check
Explains how to interpret AC IN icon blink patterns as error codes.
Procedure 3: Battery Icon Check
Details how to check the battery icon for charging status and related issues.
Procedure 4: AC PS Unit Replacement Check
Outlines steps for checking and replacing the AC PS Unit.
2.4 System Board and HDD I/F Board Troubleshooting
Procedure 1: Message Check
Checks system configuration messages displayed during boot.
Procedure 2: Printer Port LED Check on Boot Mode
Uses printer port LEDs to display IRT status during boot mode.
Procedure 3: Printer Port LED Check on Resume Mode
Uses printer port LEDs to display IRT status during resume mode.
Procedure 4: Diagnostic Test Program Execution Check
Executes diagnostic tests and proceeds based on results.
Procedure 5: Replacement Check
Guides replacement of potentially faulty components like system board or HDD I/F board.
2.5 Floppy Disk Drive Troubleshooting
Procedure 1: FDD Head Cleaning Check
Details the FDD head cleaning process using the diagnostics program.
Procedure 2: Diagnostic Test Program Execution Check
Executes diagnostic tests for the floppy disk drive.
Procedure 3: Connector Check and Replacement Check
Covers checking and replacing FDD connectors and the drive itself.
2.6 Hard Disk Drive Troubleshooting
Procedure 1: Partition Check
Checks the hard disk drive's partition status using FDISK.
Procedure 2: Message Check
Analyzes error messages displayed during HDD operation.
Procedure 3: Format Check
Guides through low-level and MS-DOS formatting procedures.
Procedure 4: Diagnostic Test Program Execution Check
Executes diagnostic tests for the hard disk drive.
2.7 Keyboard Troubleshooting
Procedure 1: Diagnostic Test Program Execution Check
Executes the keyboard test within the diagnostics program.
Procedure 2: Connector and Replacement Check
Checks keyboard cable connection and controller for issues.
2.8 Display and VGA Board Troubleshooting
Procedure 1: Contrast Control Check
Checks the display's contrast control functionality.
Procedure 2: External CRT Check
Tests display functionality using an external CRT monitor.
Procedure 3: Diagnostic Test Program Execution Check
Executes the display test program to check the display controller.
Procedure 4: Connector Check
Inspects display unit cable connections for proper seating.
Procedure 5: Replacement Check
Guides component replacement if display issues persist after checks.
3.1 The Diagnostic Test
Notes for Starting Diagnostics
Provides notes on starting diagnostics: check cables, exit applications, avoid virtual 86 mode.
Diagnostics Menu Functions
Lists functions available in the Diagnostics Menu: DIAGNOSTIC TEST, HARD DISK FORMAT, etc.
Diagnostic Test Menu Tests
Lists the 11 tests available under Diagnostic Test: SYSTEM TEST, MEMORY TEST, etc.
3.2 Executing the Diagnostic Test
Steps to Start Diagnostics
Details steps to start diagnostic programs: insert disk, select menu options.
Diagnostics Menu Navigation
Explains navigation keys (↑↓→←, Enter, Esc) within the Diagnostics Menu.
Exiting Diagnostic Programs
Provides methods to exit the Diagnostics Menu or stop a running test (Esc, Ctrl+Break, Ctrl+C).
3.4 System Test
Subtest 01 ROM Checksum
Tests the system board's ROM checksum from address F0000h to FFFFFh.
Subtest 05 Thermistor Check
Checks the thermistor for CPU temperature monitoring.
3.5 Memory Test
Subtest 01 RAM Constant Data (Real Mode)
Writes and compares constant data in conventional memory.
Subtest 02 RAM Address Pattern Data (Real Mode)
Writes and compares address pattern data in conventional memory.
Subtest 03 RAM Refresh (Real Mode)
Tests RAM refresh functionality in conventional memory.
Subtest 04 Protected Mode
Tests extended memory in protected mode, requiring specific CONFIG.SYS settings.
3.6 Keyboard Test
Subtest 01 Pressed Key Display (82/84)
Displays keyboard layout and shows pressed keys with an '*' character.
Subtest 02 Pressed Key Code Display
Shows scan code, character code, and keytop name for pressed keys.
Subtest 03 PS/2 Mouse Connect Check
Checks if a PS/2 mouse is connected to the computer.
Subtest 04 Pointing Stick
Tests the pointing stick's motion response and switch functions.
3.7 Display Test
Subtest 01 VRAM Read/Write
Tests video RAM by writing and reading constant and address data.
Subtest 02 Character Attributes (Mode 1, 13h)
Displays character attributes like normal, intensified, reverse, and blinking.
Subtest 03 Character Set
Displays the character set in 40 x 25 character mode.
Subtest 04 80 x 25/30 Character Display (Mode 3, 12)
Shows character string shifting in 80 x 25 and 80 x 30 modes.
Subtest 05 320 x 200 Graphics Display (Mode 4,D)
Displays color sets for 320 x 200 dot graphics mode.
Subtest 06 640 x 200 Graphics Display (Mode 6, E)
Displays even dots, odd dots, and all dots in 640 x 200 graphics mode.
Subtest 07 640 x 350/480 Graphics Display (Mode 10, 12)
Displays dots in 640 x 350 and 640 x 480 graphics modes.
Subtest 08 Display Page
Confirms pages can be changed in 40 x 25 character mode.
Subtest 09 H Pattern Display/Border Color
Displays 'H' characters and checks color CRT settings.
Subtest 10 LED/DAC Pallet
Checks LED indicators (Caps Lock, etc.) and DAC pallet.
Subtest 11 Color Display
Tests color display modes, showing various color palettes and shades.
3.8 Floppy Disk Test
Steps to Execute Floppy Disk Test
Guides on selecting drive, media type, and start track for FDD testing.
Floppy Disk Test Menu
Presents the menu for selecting FDD subtests.
Subtest 01 Sequential Read
Performs CRC check by reading tracks sequentially on the floppy disk.
Subtest 02 Sequential Read/Write
Writes and reads back data pattern B5ADADh to specified tracks.
Subtest 03 Random Address/Data
Writes and reads random data to random addresses on floppy disk tracks.
Subtest 04 Write Specified Address
Writes specified data to a specific track, head, and address.
Subtest 05 Read Specified Address
Reads data from a specific track, head, and address.
3.9 Printer Test
Printer I/O Port Selection
Explains selecting the printer channel number for testing.
Subtest 01 Ripple Pattern
Prints characters line-by-line while shifting them left.
Subtest 02 Function
Tests various printer functions like normal, double width, and compressed print.
Subtest 03 Wraparound
Checks output and bidirectional modes using a printer wraparound connector.
3.10 Async Test
Data Format Requirements
Specifies data format: Method, Speed, Data bits, and Pattern.
Channel Selection
Explains selecting the serial port channel number for testing.
Subtest 01 Wraparound (Board)
Checks data send/receive function through an RS-232-C wraparound connector.
Subtest 02 Board (#1) <=> board (#2)
Indicates this subtest is not used.
3.11 Hard Disk Test
Post-Test Commands
Recommends FDISK and FORMAT commands after the HDD test.
Test Execution Prompts
Lists prompts for selecting drive number, error retry, and status display.
Subtest 01 Sequential Read
Reads tracks sequentially, starting at track 0 and moving back.
Subtest 02 Address Uniqueness
Writes unique address data to each sector and compares it.
Subtest 03 Random Address/Data
Writes and reads random data to random addresses on HDD.
3.12 Real Timer Test
Subtest 01 Real Time
Allows input of new date and time, and tests real-time clock functionality.
Subtest 02 Backup Memory
Performs backup memory check by writing and comparing data patterns.
3.13 NDP Test
Subtest 01 NDP
Checks math co-processor functions: Control word, Status word, Bus, Addition, Multiplication.
3.14 Expansion Test
Subtest 01 PCMCIA Wraparound (Internal)
Checks signal lines of the PC card slot (address, data, wait lines, etc.).
Subtest 02 PCMCIA Wraparound (External)
Checks signal lines of the enhanced port replicator's PC card slots.
3.17 Hard Disk Format
Types of Hard Disk Formatting
Describes Low-level (physical) and MS-DOS (logical) formatting.
Hard Disk Drive Formats and Check
Lists All track FORMAT, Good track FORMAT, Bad track FORMAT, Bad track CHECK.
3.17.1 Function Description
Details the 'All Track FORMAT' function and its prerequisites.
3.18 Head Cleaning
3.18.1 Function Description
Explains head cleaning in FDD using head load/seek and read operations.
3.18.2 Operations
Provides steps for performing FDD head cleaning with a cleaning kit.
3.19 Log Utilities
3.19.1 Function Description
Logs error information generated during tests, storing results in RAM or floppy disk.
3.19.2 Operations
Details how to log error information and manipulate the log using number keys.
3.20 Running Test
3.20.1 Function Description
Automatically executes tests sequentially: System, Memory, Display, FDD, HDD, etc.
3.20.2 Operations
Guides running the automated test sequence, including connection prompts.
3.21 Floppy Disk Drive Utilities
3.21.1 Function Description
Formats FDD, copies floppy disks, and displays dump lists for FDD/HDD.
FORMAT Options
Lists formats for 5.25-inch or 3.5-inch disks: 2D, 2DD, 2HD.
COPY Function
Describes copying data from a source to a target floppy disk.
DUMP Function
Displays floppy disk contents and designated hard disk sectors.
3.22 System Configuration
3.22.1 Function Description
Lists configuration information: BIOS ROM version, memory size, drive counts, CPU clock.
3.22.2 Operations
Shows how to display system configuration details.
3.23 SETUP
Function Description
Lists system setup information categories: Memory, Display, Hard Disk, I/O Ports, etc.
Accessing the SETUP Program
Explains how to enter and navigate the SETUP utility.
4.1 General
FRU Removal Guide
Provides a chart guiding which FRUs need removal to access others.
Battery Pack
Marks Battery Pack as the first FRU to remove.
Display Mask
Lists components related to the display mask: FL Inverter Board, LCD Module, FL.
Safety Precautions
DANGER
Warns about battery hazards, high voltages, and component handling.
WARNING
Advises on avoiding electric shock and injury during disassembly.
CAUTION
Provides guidance to avoid damage to the computer during disassembly.
Before You Begin
Lists important steps before starting disassembly: use approved tools, safe environment, diagnostics.
Disassembly Procedures
Explains types of cable connectors and how to disconnect/connect them.
Assembly Procedures
Provides general points for reassembling the computer after repair.
4.2 Battery Pack
Removing the Battery Pack
Step-by-step instructions and figures for removing the battery pack.
4.3 Optional PC Card
Removing an Optional PC Card
Instructions for removing a PC card, including eject button usage.
4.4 Optional Memory Module
Removing an Optional Memory Module
Details steps for removing the memory module, including screw locations.
4.5 Hard Disk Drive (HDD)
Removing the HDD
Step-by-step guide to remove the HDD, including frame and brace.
4.6 Keyboard
Removing the Keyboard
Instructions for removing the keyboard, including base cover and metal cover.
4.7 Sub-battery and VGA Board
Removing the Sub-battery and VGA Board
Details for removing the sub-battery and VGA board, including cable disconnections.
4.8 RTC Battery and Top Cover with Display Assembly
Removing the RTC Battery and Top Cover with Display Assembly
Instructions for removing RTC battery and top cover, including screw and cable disconnections.
4.9 Floppy Disk Drive (FDD)
Removing the FDD
Steps to remove the FDD, including disconnecting the cable and frame.
4.10 HDD Interface Board and Membrane Switch
Removing the HDD Interface Board and Membrane Switch
Instructions for removing HDD interface board and membrane switch, noting cable bends and ground plate.
4.11 AC Power Supply Unit
Removing the AC PS Unit
Details for removing the AC PS unit, including cable and holder assembly.
4.12 System Board
Removing the System Board
Step-by-step instructions for removing the system board.
4.13 Display Mask
Removing the Display Mask
Instructions for removing the display mask, including rubber seals and cushions.
4.14 Fluorescent Lamp (FL) Inverter Board (110CT with TFT)
Removing the FL Inverter Board
Details for removing the FL inverter board, including cable and screw locations.
4.15 Fluorescent Lamp (FL) Inverter Board (110CS with DSTN)
Removing the FL Inverter Board
Instructions for removing FL inverter board for DSTN displays.
4.16 Liquid Crystal Display (LCD) Module (110CT with TFT)
Removing the LCD Module
Steps to remove the LCD module, including cable disconnections and screw locations.
4.17 Liquid Crystal Display (LCD) Module (110CS with DSTN)
Removing the LCD Module
Instructions for removing the LCD module for DSTN displays.
4.18 Fluorescent Lamp (FL) (110CT with TFT)
Removing the FL
Details for removing the FL, including metal cover and screw locations.
4.19 Fluorescent Lamp (FL) (110CS with DSTN)
Removing the FL
Instructions for removing the FL for DSTN displays, including latches and screws.
Appendix A Handling the LCD Module
Precautions for Handling the LCD Module
Lists precautions for handling LCD modules to prevent damage during assembly/disassembly.
Appendix B Board Layouts
B.1 System Board Front View
Diagram showing the layout of ICs and connectors on the system board's front.
B.2 System Board Back View
Diagram showing the layout of ICs and connectors on the system board's back.
Appendix C Pin Assignments
C.1 PJ1 Thermistor Connector (3-pin)
Lists pin assignments for the PJ1 Thermistor connector.
C.2 PJ2 Expansion Memory Connector (140-pin)
Details pin assignments for the PJ2 Expansion Memory connector.
C.3 PJ3 NiMH RTC Battery Connector (3-pin)
Lists pin assignments for the PJ3 NiMH RTC Battery connector.
C.4 PJ4 PRT/RGB I/F Connector (30-pin)
Details pin assignments for the PJ4 PRT/RGB I/F connector.
C.5 PJ5 FDD Connector (26-pin)
Lists pin assignments for the PJ5 FDD connector.
C.6 PJ7 HDD Connector (90-pin)
Details pin assignments for the PJ7 HDD connector.
C.7 PJ8 Asynchronous Connector (9-pin)
Lists pin assignments for the PJ8 Asynchronous connector.
C.8 PJ9 P-REP Connector (176-pin)
Details pin assignments for the PJ9 P-REP connector.
C.9 PJ10 Panel Sensor Connector (2-pin)
Lists pin assignments for the PJ10 Panel Sensor connector.
C.10 PJ12 Ext. Keyboard Connector (6-pin)
Details pin assignments for the PJ12 External Keyboard connector.
C.11 PJ13 Keyboard Connector (25-pin)
Lists pin assignments for the PJ13 Keyboard connector.
C.12 PJ14 LED Connector (12-pin)
Details pin assignments for the PJ14 LED connector.
C.13 PJ15 PC Card Connector (140-pin)
Lists pin assignments for the PJ15 PC Card connector.
C.14 PJ16 VGA Connector (120-pin)
Details pin assignments for the PJ16 VGA connector.
Appendix D Keyboard Scan/Character Codes
Notes on Scan Codes
Explains scan code differences by mode, overlay, and key combinations.
Appendix E Key Layouts
E.1 United States (US) Keyboard
Illustrates the standard US keyboard layout.
E.2 United Kingdom (UK) Keyboard
Illustrates the United Kingdom keyboard layout.
E.3 German (GR) Keyboard
Illustrates the German keyboard layout.
E.4 French (FR) Keyboard
Illustrates the French keyboard layout.
E.5 Spanish (SP) Keyboard
Illustrates the Spanish keyboard layout.
E.6 Italian (IT) Keyboard
Illustrates the Italian keyboard layout.
E.7 Scandinavian (SC) Keyboard
Illustrates the Scandinavian keyboard layout.
E.8 Swiss-German (SL) Keyboard
Illustrates the Swiss-German keyboard layout.
Appendix F Wiring Diagrams
F.1 Printer Wraparound Connector
Shows pin assignments for the printer wraparound connector.
F.2 RS-232-C Wraparound Connector
Illustrates the wiring for the RS-232-C wraparound connector.
F.3 RS-232-C Direct Cable (9-Pin to 9-Pin)
Depicts the wiring diagram for a 9-pin to 9-pin RS-232-C direct cable.
F.4 RS-232-C Direct Cable (9-Pin to 25-Pin)
Shows the wiring for a 9-pin to 25-pin RS-232-C direct cable.
Appendix G BIOS Rewrite Procedures
Tools for BIOS Rewrite
Lists the necessary tool: Diagnostics Disk for the 110 series.
Rewriting the BIOS
Provides steps for rewriting the system BIOS using the Diagnostics Disk.
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