Epson LT - 286e - Manual (Page 18)

System Board Diagnostics
The tests listed in the System Board submenu provide a
complete diagnostics check of the system board.
Basic Functionality test
CPU Protected Mode test
Processor speed test
CoProcessor test
DMA Controller test
Interrupt Controller test
Timer test
Real Time Clock test
CMOS 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 o f 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