Epson EL 4S/33+
Software Problems
When installing a copy-protected software package, first
try the installation at high speed. If this does not work
properly, select low speed by pressing the Ctrl and Alt
keys and the - key on the numeric keypad
simultaneously. Try loading the program at low speed
and then switching to high speed, if possible.
When using a software package that uses a key disk as its
copy-protection method, try loading it at high speed. If
this does not work, load it at low speed.
Installing Option Cards
Although the EL 4S/33+ will support most full-length
option cards, option cards with an I/F connector on the
back may not fit into the option slot.
Make sum the power requirements of the option cards
you install do not exceed the power supply limitations.
If the computer locks up, the power supply may be
overloaded. On a system with three or more option cards,
the installation of a second hard disk drive may overload
the power supply.
If you are installing a video adapter card, make sure you
disable the built-in VGA by changing jumpers J7, J8, and
J9 to the Off position.
COM Port Assignment
If you want to assign COM1 as COM3, you must set jumper
J24 to position 2-3. If you want to assign COM2 as COM4,
you must set jumper J26 to position 2-3.
System Problems
Do not attempt to install OS/2, version 2.1, from
CD-ROM.
Do not use this computer as a server in a multi-LAN
environment.
When using SCO UNIX, the CMOS settings may be lost
when you boot the system. Also, keyboard input is not
accepted unless the Cyrix cache is disabled or the slow
refresh is set.
You cannot use an external hard disk drive with this
computer.
When an extended memory test is run on QAFE, the
system hangs. This is a problem with the way QAFE
handles Cyrix memory.
Information Reference List
Engineering Change Notices
None.
Technical Information Bulletins
None.
Product Support Bulletins
None.
Related Documentation
TM-EL3/4S33
Epson EL 3S/33 and 4S/33 Service Manual
ADD
Epson EL 4S/33+ Service Manual Addendum
PL-
Epson EL 4S/33+ Parts Price List
400275000
Epson EL 4S/33+ User’s Guide
Epson EL 4S/33+ - 10
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