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Intel DX4-75 microprocessor details.
Math co-processor location within DX4.
16 KB cache memory details.
HDD and FDD specifications.
Internal CD-ROM drive features and formats.
Standard memory configurations and LIM-EMS compatibility.
T2150CDS/CDT LCD specifications and controller.
82/84-key enhanced keyboard features.
Main, backup, and RTC battery types.
Optional memory module installation.
PCMCIA slot specifications.
Centronics compatible parallel port.
9-pin serial interface port.
PS/2 keyboard connector.
Port replicator connection details.
15-pin RGB port for external display.
Pointer control stick functionality.
Sound Blaster Pro compatible multimedia system.
Microprocessor details.
RAM configurations and specifications.
BIOS ROM specifications.
Video RAM specifications.
Optional memory module details.
SI components and functions.
System controller gate array functions.
I/O controller gate array functions.
PCMCIA controller functions.
Level shift gate array functions.
Video controller specifications.
Keyboard controller functions.
RTC chip and memory details.
STN LCD module specifications.
FL inverter board specifications.
TFT LCD module specifications.
FL inverter board specifications.
Main battery, indicator, and charging.
Quick and trickle battery charging.
Backup battery charging and data preservation.
RTC battery charging and data preservation.
AC IN LED indicator troubleshooting steps.
Battery LED indicator troubleshooting steps.
AC PS unit replacement check.
Checking for error messages.
Printer port LED check on boot mode.
Printer port LED check on resume mode.
Diagnostic test program execution check.
Component replacement check.
FDD head cleaning procedure.
FDD diagnostic test execution check.
FDD connector and replacement check.
HDD partition check procedure.
HDD message check procedure.
HDD format check procedure.
HDD diagnostic test execution check.
Keyboard diagnostic test execution check.
Keyboard connector and replacement check.
Contrast control check for T2150CDS.
External CRT connection check.
Display diagnostic test execution check.
Display unit connector check.
Display component replacement check.
CD-ROM cleaning procedure.
CD-ROM diagnostic test check.
CD-ROM connector and replacement check.
ROM checksum test.
Hardware status check.
System version check.
Tests RAM constant data.
Tests RAM address pattern data.
Tests RAM refresh.
Tests memory in protected mode.
Tests optional memory modules.
Tests cache memory.
Displays pressed key on screen.
Displays scan/char codes for keys.
Checks PS/2 mouse connection.
Tests pointing stick and switch functions.
Tests VRAM read/write operations.
Displays character attribute modes.
Displays character set.
Displays character strings in text modes.
Displays graphics in 320x200 mode.
Displays graphics in 640x200 mode.
Displays graphics in 640x350/480 modes.
Confirms page changes in text mode.
Displays H pattern and border color.
Checks LED indicators and DAC pallet.
Tests TFT color display modes.
Performs CRC and reads tracks.
Writes and reads data patterns.
Writes random data to random addresses.
Writes data to specified address.
Reads data from specified address.
Prints characters line-by-line.
Tests printer functions like normal, compressed print.
Checks output and bidirectional modes.
Checks data send/receive via wraparound connector.
Checks data send/receive via direct cable.
Sends data between machines.
Receives data from machines.
Checks Interrupt Request Levels.
Sequential reading of HDD tracks.
Writes unique address data to sectors.
Writes random data to random addresses.
Tests for cross talk and peak shift.
Writes/reads/compares data to CE cylinder.
Writes data to specified HDD address.
Reads data from specified HDD address.
Checks ECC circuit functions.
Writes data to HDD cylinders.
Writes/reads/compares data at specified address.
Inputs and checks current date and time.
Checks backup memory data.
Checks real time clock increments.
Tests NDP functions like control word, bus, math.
Checks PCMCIA slot signal lines.
Tests CODEC functions and terminals.
Tests FM synthesizer functions.
Tests sine wave playback.
Tests joystick functionality.
Conducts wraparound test on MIDI/Joystick port.
Tests line in/out for recording and playback.
Sequential reading of CD-ROM blocks.
Reads random CD-ROM data.
Reads CD-ROM data from specified addresses.
Description of hard disk formatting functions.
Operations for hard disk formatting.
Description of FDD head cleaning.
Function for logging error information.
Automatically executes a sequence of tests.
Formats FDD, copies disks, displays dump list.
Provides system configuration information.
Displays current system setup information.
Precautions before disassembling the computer.
Procedures for disconnecting cable connectors.
General points for reassembling the computer.
Lists necessary tools for disassembly.
Lists screw tightening torque specifications.
Steps to remove the battery pack.
Steps to install a new battery pack.
Steps to remove the memory module.
Steps to install a memory module.
Steps to remove a PCMCIA card.
Steps to install a PCMCIA card.
Steps to remove the keyboard.
Steps to install the keyboard.
Steps to remove HDD and sound board.
Steps to install HDD and sound board.
Steps to remove top cover, display, speaker.
Steps to install top cover, display, speaker.
Steps to remove the AC PS unit.
Steps to install the AC PS unit.
Steps to remove the CD-ROM drive.
Steps to install the CD-ROM drive.
Steps to remove system board and batteries.
Steps to install system board and batteries.
Steps to remove the display mask.
Steps to install the display mask.
Steps to remove FL inverter board.
Steps to install FL inverter board.
Steps to remove LCD module.
Steps to install LCD module.
Steps to remove the FL component.
Steps to install the FL component.
Steps to remove FL inverter board.
Steps to install FL inverter board.
Steps to remove LCD module.
Steps to install LCD module.
Steps to remove the FL component.
Precautions for handling LCD modules.
Diagram of the system board (front).
Diagram of the FHWSD* board.
Pin assignments for RTC connector.
Pin assignments for PRT connector.
Pin assignments for CD-ROM connector.
Pin assignments for external FDD connector.
Pin assignments for HDD connector.
Pin assignments for ASYNC connector.
Pin assignments for port replicator connector.
Pin assignments for panel sensor connector.
Pin assignments for system speaker connector.
Pin assignments for IPS switch connector.
Pin assignments for keyboard connector.
Pin assignments for LCD connector.
Pin assignments for RGB connector.
Pin assignments for expansion memory connector.
Pin assignments for DC IN connector.
Pin assignments for main battery connector.
Pin assignments for sub battery connector.
Pin assignments for ASYNC connector.
Pin assignments for PS/2 KB connector.
Pin assignments for system I/F connector.
Pin assignments for microphone connector.
Pin assignments for speaker connector.
Layout of the US keyboard.
Layout of the UK keyboard.
Layout of the German keyboard.
Layout of the French keyboard.
Layout of the Spanish keyboard.
Layout of the Italian keyboard.
Layout of the Scandinavian keyboard.
Layout of the Swiss-German keyboard.
Wiring diagram for printer wraparound connector.
Wiring diagram for RS-232-C wraparound connector.
Wiring diagram for RS-232-C direct cable.
Wiring diagram for RS-232-C direct cable.
Lists tools needed for BIOS rewrite.
Steps for rewriting the system BIOS.
General