Epson LT-286 - Manual (Page 123)

in which the error is found. Your dealer needs this information to
find and correct the problem.
If an I/O or checksum error occurs, you see this message:
xxxx0 ROM error
where xxxx is the number of the segment of the bad I/O ROM.
Clock and CMOS RAM Check
When the system device check is completed successfully, the
computer checks the system clock and CMOS RAM. If the system
options have not been set, one of the following messages is
displayed:
161-System options not set
(Run SETUP in DIAGNOSTICS)
162-System options not set
(Run SETUP in DIAGNOSTICS)
If the memory allocation has not been set, you see this message:
164-Memory size error
(Run SETUP in DIAGNOSTICS)
RAM Check
The computer now begins to check the RAM installed on the main
system board. During this check, this message is displayed:
xxxxxx KB Ok
where xxxxxx indicates the amount of memory in which no
malfunction has been found. This value increases continuously by
64KB up to the amount of RAM installed on the main board. If the
computer detects an error in the first 64KB area, an error message is
displayed and the computer halts with no further information.
C-2 Power-On
Diagnostics