User`s manual

112
port configured for RS422 or
RS485
configure serial port for RS232
incorrect cable cable must 'criss-cross' TXD and RXD
lines from end to end
keyboard does not work keyboard interface damaged
by misconnection
check if keyboard LEDs light
wrong keyboard type verify keyboard is an 'AT' type or switch to
'AT' mode
Windows 3.1x installation
program hangs
smartdrive enabled remove smartdrive command from con-
fig.sys, reboot, run install program
floppy drive light always on cable misconnected check for floppy drive cable connected
backwards
two hard drives will not
work, but one does
both drives configured for
master
set one drive for master and the other for
slave operation (consult drive documenta-
tion)
floppy does not work "data error" due to drive up-
side down
orient drive properly (upright or on its
side)
will not boot when video
card is removed
illegal calls to video controller look for software trying to access non-ex-
istent video controller for video, sound, or
beep commands
won't boot from PCMCIA
hard drive
booting from PCMCIA is not
supported
boot from SSD, use autoexec.bat to load
PCMCIA drivers, run application from
PCMCIA card or use RTD’s CMT104
which accesses PCMCIA ATA drives as
an IDE drive.
COM port will not work in
RS422 or RS485 modes
not configured for RS422/485 correctly configure serial port in Setup
program
COM port will not transmit
in RS422 or RS485 mode
not enabling transmitters control RTS* bit of Modem Control Reg-
ister to enable transmitters; see Serial Port
descriptions
date and time not saved
when power is off
no backup battery connect a backup battery to the Multifunc-
tion connector