Epson EL 486UC+ Installation and operation manual

Epson EL 486UC
hard disk or diskette
drive bay
button
I
h&disk ‘@”
===hw
power
monitor cable
7 \
AC inlet AC outlet
Icg’ / 1
COM1 COM2 Parallel
Game
Computer Specifications
CPU and Memory
32-bit CPU Intel 80486SX/25 microprocessor;
upgradable to 486SX/33, 486DX/33,
486DX2/50, or 486DX2/66
System speed Fast and slow speeds available; fast speed
is 25 MHz or the speed of your upgraded
microprocessor, slow speed is 8 MHz;
speed selection through SETUP program
and keyboard commands
To select slow speed, press the Ctrl, Alt,
and - keys simultaneously. To select
fast speed, press the Ctrl, Alt, and + keys
simultaneously. (Use the - or + key on the
numeric keypad.)
Memory
ROM
Video RAM
Shadow RAM
Cache
Clock/calendar
Controllers
Video
Diskette
Hard disk
Interfaces
Monitor
Parallel
serial
Game
Keyboard
4MB RAM standard on a SIMM;
expandable to 32MB using 1MB, 4MB,
8MB, and 16MB SIMMs; SIMMs must be
tin-plated, 72-pin, 36-bit, fast-page mode
type with 70ns or faster access speed
128KB system BIOS, video BIOS, and
SETUP code located in EPROM on main
system board
512KB DRAM on main system board;
expandable to 1MB using 70ns or 80ns,
256KB x 4 bit, 20-pin, DIP DRAM chips
Supports shadowing of system and video
BIOS ROM into RAM
8KB of internal cache (built into the
microprocessor); supports 32KB or 128KB
of external cache using 28-pin, 8 x 8, 20ns
DIP chips or 28-pin, 32 x 8, 20ns DIP chips
Real-time clock, calendar, and CMOS
RAM contained in 82C206 controller on
main system board with NiCad battery
backup
Trident TVGA 8900C VGA controller on
main system board; provides resolutions
up to 1024 x 768 in 16 colors (up to
1024 x 768 in 256 colors with 1MB of video
memory)
Controller on main system board supports
up to two diskette drives, maximum
Interface on main system board supports
up to two IDE hard disk drives,
maximum, with built-in controllers on the
hard disk drive itself
VGA interface built into main system
board for analog or multifrequency VGA
monitor; 15-pin, D-shell connector
One standard 8-bit parallel, unidirectional
interface built into main system board;
25-pin, D-shell connector
Two RS-232C, programmable,
asynchronous interfaces built into main
system board; 9-pin, D-shell connectors
One game port interface built into main
system board; 15-pin, D-shell connector
PS/2 compatible keyboard interface built
into main system board; num lock setting
selectable through SETUP; 6-pin, mini
DIN connector
8/15/93
Epson EL 486UC-1

Epson EL 486UC
Option slots
Speaker
Mass Storage
External mounts
Internal mount
Diskette drives
Hard disk
drives
Other devices
Keyboard
SETUP
Program
Three 16-bit (or 8-bit) full-length and two
8-bit half-length I/O expansion slots, ISA
compatible, 8.33 MHz bus speed
Internal
Three drives maximum (two externally-
accessible mounts and one internal
mount), configurable using the following:
Up to two externally-accessible, horizontal
mounts; one horizontal bay can
accommodate a half-height 5!&inch form
factor hard disk, diskette, tape, CD-ROM,
or other drive; the other horizontal bay
can accommodate one thud-height
3&r& form factor hard disk, diskette,
tape, or other device
One internal third- or half-height
horizontal mount; bay can accommodate
one 3%~inch form factor hard disk or
other drive
5.25-inch, 1.2MB (high-density)
3.5-inch, 1.44MB (high-density)
5.25-inch, 360KB (double-density)
3.5-inch, 720KB (double-density)
31&nch form factor hard disk drive(s),
third- or half-height size
Half-height tape drive, CD-ROM drive, or
other storage device; 51/4-&h form factor
or 39.2~inch form factor with 5%~inch
mounting frames attached
Detachable, two-position height; 101 or 102
sculpted keys; country-dependent main
typewriter keyboard; numeric/cursor
control keypad; four-key cursor control
keypad; 12 function keys
Stored in ROM; accessible by pressing
Ctrl, Alt, and S during boot or at the DOS
prompt
Physical Characteristics
Width 15.6 inches (396 mm)
Depth 14.5 inches (368 mm)
Height 4.1 inches (104 mm)
Weight 15 lb (6.8 kg) without drives or keyboard
Power Supply
Type
65 Watt, fan cooled
Input ranges 90 to 260 VAC
Maximum +5 VDC at 7.5 Amps, +12 VDC at
outputs 2.0 Amps, -12 VDC at 0.3 Amps
Frequency 47 to 63 Hz
Cables One to main system board; four to mass
storage devices
Option Slot Power Limits
Maximum current ]+5VCR*
+I2 Volts I-12 volts
For all slots I4.6Arips 1 l.BAqm 10.3Amp
This system does not support older option cards that tray require -5 volts.
Environmental Requirements
Operating
Condition range
Temperature 41° to 90° F
(5° to 32° C)
Humidity
20% to 90%
(non-
Non-operating
range Storage range
-4° to 140°F -4° to 140° F
(-20° to 60° C) (-20° to 60° C)
10% to 90% 10% to 90%
condensing) 1
I
Altitude I-33ot09,9wn I-33ot039,6ooa 1-33Ot039.600n
I
I(-lwto3.ooom) ~(-1a0to12000m)~(-100t012,ooOm)J
Major Subassemblies
option card
connector board microprocessor
,
\
mounting bracket
\
drive bays
Epson EL 486UC-2 8/15/93

Epson EL 486UC
Jumper Settings
J1
J7
J14
/
Jumper settings
Jumper Jumper
number setting Function
J18
1-2*
Enables COM1 serial port
2-3 Disables COM1 serial port
J19
1-2*
Assigns COM1 serial port as COM1
1 2-3 Assigns COM1 serial port as COM3**
J30
1-2*
Enables COM2 serial port
DOS automatically reassigns parallel and serial ports. Check your DOS
manual for more information.
+ If you change this jumper setting to position 2-3, make sum you select MONO
for the Video Card option In SETUP.
Drive assignment jumper settings
Drive assignment
J-35
J36
J37
J38
Upper drive is A 1-2 1-2
1-2 1-2
Lower drive is A
2-3* 2-3* 2-3* 2-3*
External cache jumper settings’
Cache size
J7 J10
J11 J13
J14 _
32 KB
on 1-2 1-2 1-2 1-2
128 KB
On 2-3 2-3 2-3 2-3
* If you have no external cache installed, the position of these Jumpers does
not matter.
Do not remove jumper J42. If J42 is off, your system cannot
write to RAM.
SIMM Installation
Your computer comes with 4MB of memory on a SIMM. You
can increase the memory up to 32MB by installing 1MB,
4MB, 8MB, and 16MB SIMMs in the computer’s two SIMM
sockets. The following table shows the possible SIMM
configurations; do not install memory in any other
configuration.
SIMM configuration
Before you install SIMMs, check the following guidelines to
ensure that they will work properly:
0 Use only tin-plated, 36-bit, 72-pin, fast-page mode SIMMs
that operate at an access speed of 70ns (nanoseconds) or
faster. Be sure all the SIMMs operate at the same speed.
0 Use the correct SIMM configuration to add the amount of
memory you want. See the table above.
8/15/93
Epson EL 486UC-3

Epson EL 486UC
Video Memory
Microprocessor upgrade procedures
The EL 486UC comes with 512KB of video memory. You can
increase the video memory to 1MB by installing four video
DRAM, 20-pin, 70ns or 80ns, 256KB x 4-bit, DIP chips.
For the memory to work properly, you must install chips in
the following configuration (each bank contains two video
memory sockets).
If you Install
486SX/33
486DX/33
Video memory chip configuration
Bank 0 Bank 1
Bank 2Bank 3
Total
(U18 and U39) (U24 and U43) (U25 and U47) (U31 and U53) memory
Soldered Filled
512KB *
Soldered Filled
Filled Filled 1024KB
* Standard video memory
486DS2/50
External Cache
486DX2/66
You can add either 32KB or 128KB of external cache to the
EL 486UC by installing SRAM chips. For 32KB, use five
28-pin, 8 x 8, 20ns DIP chips. For 128KB, use five 32 x 8, 20ns
DIP chips. After adding external cache, be sure to change
jumpers J7, J10, J11, J13, and J14 to match the amount of
cache installed.
Hard Disk Drive Types
Microprocessor Upgrades
The computer’s 80486SX/25 microprocessor can be
upgraded to a 486SX/33, 486DX/33, 486DX2/50, or
486DX2/66. You can either purchase an upgrade kit from
Epson or buy the components separately, as listed in the
following table.
The following table lists types of hard disk drives you can
use in the computer. Check this table and your hard disk
manual to find the correct type number(s) for the hard disk
drive(s) installed in the computer. You need to enter the type
number(s) when you set the hard disk drive configuration in
the SETUP program.
Hard disk drive types
Microprocessor upgrade components
Use the following table to identify the general steps you need
to perform to upgrade your microprocessor. The pages listed
in the final column tell you where to find instructions in the
User’s Guide for performing those steps.
Remove existing processor chip
Install the 486DX2/50 chip
lnstall a head sink on the chip
Epson EL 486UC-4 8/15/93

Epson EL 486UC
Hard disk drive types (continued)
Type Cyl [Heads IPrecomp IL2
Sec Size* (MB)
25 615 14 10 Is15 17 20
26 102 23 17 34
Actual formatted size may be slightly different than size on drive label.
If the computer has an Epson-supplied hard disk drive,
select a userdefined drive type and enter the appropriate
information from the table below using the SETUP program.
Epson-supplied hard disk drive types
(Conner CP30254)
340MB
655 16 0 654 63 343
(Conner CP30344)
l Actual formatted size may be slightly different than size on drive label.
I If you have one of these hard disk drives. make sure you set the Shadow
BIOS ROM option to WP-Shadow or Cacheable.
Installation/Support Tips
Installing Option Cards
Although the EL 486UC will support most full-length option
cards, option cards with an I/F connector on the back may
not fit into the option slot.
Note that the EL 486UC system does not support older
option cards requiring -5 VDC.
Installing Diskette Drives
Make sure that the drive type has been correctly selected in
the SETUP program.
Installing Hard Disk Drives
0 It is recommended that a 16-bit, AT-type hard disk
controller be used if you are installing a drive that cannot
use the embedded IDE interface. If you install a non-IDE
hard disk drive and controller card, you need to disable
the built-in IDE hard disk drive interface by moving
jumper J25 to position 2-3.
0
0
0
When installing a hard disk drive, see the hard disk drive
type tables on pages 4 and 5 and use the SETUP program
to select the correct type number for the drive. You can
select a type number that matches the parameters for the
drive or a type number with parameters having lesser
values, as long as they do not exceed the maximum
capacity (ii MB) of the drive. If there is no match for the
drive, you can select a userdefined drive type (48 or 49)
and enter the drive’s exact parameters.
If you are going to install NetWare 286, version 2.2, do not
assign a user-defined disk drive type for your disk drive.
Assign the pre-defined hard disk drive type that most
closely matches the drive you are installing.
If you are installing an ESDI hard disk drive, make sure
you disable the built-in IDE hard disk drive interface by
moving jumper J25 to position 2-3. Also be sure to remove
the hard disk drive ribbon connector from the system
board.
Software Problems
Cl 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.
0 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.
COM Port Assignment
If you want to assign COM1 as COM3, you must set jumper
J19 to position 2-3.
Booting Sequence
If you cannot boot the computer from the hard disk, make
sure the booting sequence in SETUP is set to A,
C Then boot
the computer from a system diskette in drive A.
8/15/93 Epson EL 486UC-5

Connector Pin Assignments
VGA Port Connector (CN2)
Parallel Port Connector (CN3)
pin 13
I
Parallel port connector pin assignments
*Active low logic
Serial Port Connectors (CN4 and CN5)
Serial port connector pin assignments
r
Pin Signal
1
Data carrier detect
2 Receive data
Pin Signal
6 Data set ready
7
Request to send
3 Transmit data 8Clear to send
4 Data terminal ready 9 Ring indicator
5 Not used
Keyboard Connector (CON1)
pin 6 pin 5
Keyboard connector pin assignments
Epson EL 486UC
pln15 M plnll
VGA port connector pin assignments
Game Port Connector (CN1)
pin 15 pin 9
Game port connector pin assignments
DMA Assignments
Hardware Interrupts
Pin Signal Pin Signal
1 Data
4 +5 VDC
2 Resewed
5 Clock
3 Ground
8 Reserved
Epson EL 486UC-6 8/15/93

Epson EL 486UC
Hardware interrupts (continued)
IRQ10 Available
IRQ11 Available
IRQ12 Available
IRQ13 Math coprocessor
IRQ14 HOC controller
IRQ15 Available
System Memory Map
OOOFFFFFFh
000FF0000h
000FE0000h
00100000h
000F0000h
000B8000h
000B0000h
System BIOS ROM: 64KB
Duplicated from 0F0000h
Reserved for system board: 64KB
Duplicated from OE0000h
System BIOS ROM: 64KB
Default Shadow RAM duplicated at FF0000h
Unused or I/O expansion ROM: 160KB
Resewed for ROM on I/O adapters
VGA BIOS ROM: 32KB
Default Shadow RAM
VGA text
(color): 32KB
Unused or VGA text
(monochrome): 32KB
Video memory: 64KB
Reserved for graphics display buffer
Conventional system memory: 640KB
System l/O Address Map
Information Reference List
Engineering Change Notices
None.
Technical Information Bulletins
None.
product Support Bulletins
None.
8/15/93
Epson EL 486UC-7

Epson EL 486UC
Related Documentation
TM-EL486UC Epson EL 486UC Service Manual
PL-EL486UC
Epson EL 486UC Parts Price List
400235000
Epson EL 486UC User’s Guide
Novell Certification as Client, July 19,1993
Novell Certification Documents: W-730 (SX/25), W-729
(DX2/66), 7/13/93
Epson EL 486UC-8
8/15/93