Epson Equity 386/33 PLUS User Manual page 151

The following tables list error codes and messages that may
appear during power-on diagnostic checks. If you receive an
error message, look it up in the tables below; they direct you to
the proper troubleshooting section in this appendix or offer a
solution. If you do not see an error message, read the section
that covers your problem.
Power-on diagnostics error messages
Error message
8042 Gate-A20 error
C: Drive failure
CH-2 timer error
CMOS battery state
low
CMOS checksum
failure
CMOS display type
mismatch
CMOS inoperational
CMOS memory size
mismatch
CMOS system options
not set
CMOS time and date
not set
D: Drive error
Beeps Action
Write down message, contact dealer
Write down message, contact dealer
See 'Hard Disk Problems'
See 'Hard Disk Problems'
Write down message, contact dealer
See 'Battery Problems"
Run SETUP as described In Chapter 2
of the Setup Guide. If error recurs,
write down message and contact
dealer
See "Monitor Problems'
Write down message, contact dealer
Run SETUP as described in Chapter 2
of the Setup Guide. If error recurs,
write down message and contact
dealer
Run SETUP as described in Chapter 2
of the Setup Guide; then see 'Battery
Problems'
Run SETUP and enter time and date;
see Setup Guide, Chapter 2
See 'Hard Disk Problems'
Troubleshooting C-3