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Epson LT - 286e System Board Diagnostics, Basic Functionality Test, CPU Protected Mode Test, Timer test, CoProcessor test, CMOS Validity test, DMA Controller test

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System Board Diagnostics

The tests listed in the System Board submenu provide a complete diagnostics check of the system board.

Basic Functionality testCPU Protected Mode testProcessor speed testCoProcessor testDMA Controller testInterrupt Controller testTimer testReal Time Clock testCMOS Validity test

Basic Functionality Test

This test verifies the operation of each major component on the system board. It checks the instructions, registers, and flags of the CPU.

When the test completes successfully, you see this message:

B a s i c f u n c t i o n a l i t y t e s t of C P U p a s s e d O K .

CPU Protected Mode Test

This test switches to protected mode and checks the protected mode instructions, such as LSL, VER, and LAR.

When the test completes successfully, you see this message:

Protected mode test of CPU passed OK.

System Diagnostics 13

Contents

Page IMPORTANT NOTICE DISCLAIMER OF WARRANTY COPYRIGHT NOTICE TRADEMARKS Contents The DIAG Main Menu Screen Selecting Continuous Passbound Page Page Introduction Starting the Diagnostics Program Creating a Database Page The DIAG Main Menu Screen Key Selecting Diagnostics Tests Test System Board Floppy Setting the Run Time Parameters Page Timebound Testing Continuous Testing Passbound Testing Error Logging Log errors to serial port (COM1) error 10 System Diagnostics Floppy disk A not present Floppy disk B not present Hard disk C not present Printer port not present Serial port not present Executing Diagnostics Tests in Batch Mode Running the Tests System Board Diagnostics Basic Functionality Test CPU Protected Mode Test Processor Speed Test Coprocessor Test the math coprocessor is not DMA Controller Test Interrupt Controller Test Timer Test RTC Test CMOS Validity Test Memory Diagnostics BIOS ROM Test Parity Test Pattern Test Testing from absolute base xxxxxxxxh Performing Pattern test in memory Walking 1’s Test Walking 0’s Test Address Test Refresh Test Hard Disk Diagnostics complete Hard Disk Parameters Disk drive type Interleave factor Bad track list Mark Bad Tracks (Y/N) Add an entry Revise an entry Delete an entry Clear Bad Track list Hard Disk Format Auto Interleave Media Analysis Performance Test Seek Test Read/Verify Test Check Test Cylinder Force Bad Tracks Hard Disk Error Messages INSUFFICIENT MEMORY FOR DATA TRANSFER Minimum memory required is - 128KB Floppy Disk Diagnostics Diskette Format Drive Speed Test Random R/W Test Sequential R/W Test Disk Change Line Test Floppy Disk Error Messages Keyboard Diagnostics Controller Test Scan/ASCII Code Test Keyboard Clock Line Test Keyboard Data Line Test Video Diagnostics Adapter Test Attribute Test 80x25 Display Test 40x25 Display Test 320x200 Graphics Test 640x200 Graphics Test Page Selection Test Color Test Miscellaneous Diagnostics Printer Adapter Test Communication Adapter Test Page Keyboard Scan/ASCII Codes 42 System Diagnostics Page 44 System Diagnostics Page 46 System Diagnostics Page 48 System Diagnostics Page 50 System Diagnostics Page Code Page 54 System Diagnostics System Diagnostics