Dell
Dell
OptiPlex 486/SL ,LE , L, M, ME,MXE
OptiPlex 486/SL ,LE , L, M, ME,MXE
IBM Document: Dell
02/97 Doc # MT00-020
Page 1 of 2
Copyright International Business Machines, 1997
All rights reserved
Dell OptiPlex 486/SL, LE, L, M, ME, MXE
Specifications
Processor
•
•
Intel 486SX/25, 486DX/33, 486DX2/50, 486DX2/66MHz
Memory
•
•
4MB standard, expands to 64MB
I/O Expansion Slots
•
4xx/L(v), 4xxsL(v): 3- full length 16-bit ISA, 1- VESA,
•
4xx/MXE: 5-full length 16-bit ISA slots
Diskette Drive
•
•
1.44MB diskette drive
Integrated Features
•
•
Parallel, 2-serial, keyboard, VGA
Internal Expansion Bays
•
4xx/L(v), 4xxsL(v): 2-user accessible, 1-internal bays
•
•
4xx/MXE: 3- user accessible bays, 2 internal
I/O Architecture
•
•
ISA
Power Supply
•
•
150 Watts
Diagnostics
•
Normal Post Diags performed on Power UP of system.
•
Dell system support diskette
•
•
Troubleshoot according to errors found during test
CMOS Access
•
QAPlus/FE
Tools and Software Requirements
•
Flat bladed screwdriver
•
Needle nose pliers
•
Anti-static wrist strap
•
•
Diagnostics and formatted blank diskettes
System Board -- Jumper Settings
Jumper
Setting
Function
25MHz
External prcrssr is 25MHz
30MHz
Reserved
33MHz
Ext. microprcssr is 33MHz
40MHz
Reserved
SPARE
Reserved
VGA
jumpered *
Turns on built-in VGA
unjumped
Turns off built-in VGA
FEATR
Reserved
IOADDR
jumpered*
I/O address is 26Eh-26Fh
unjumped
I/O address is 398h-399h
PSWD
jumpered*
Password on
unjumped
Password off
UPGR
jumpered
Microprcssr installed
unjumped
Microprcssr in PQFP sckt.
BIOS
jumpered *
Flash BIOS updated by disk
unjumped
Flash BIOS can’t update
BOOT
Reserved
CRDBIOS
Reserved
PS/2_MSE
jumpered *
PS/2 mouse port IRQ12 on
unjumped
PS/2 mouse port is off
IDE_IO
Reserved
VL1
jumpered
VESA riser card not installed
unjumped
VESA riser card installed
VL2
jumpered
VESA riser card not installed
unjumped
VESA riser card installed
VL_0WS
unjumped
Reserved(on riser card)
* Default
Removal Procedures
Before beginning removal complete the following steps.
1.
Turn off the computer and any peripheral devices.
2.
Disconnect AC power cord from the outlet and
system
3. Disconnect all peripheral devices from the
computer
System Cover
How to remove the cover:
1.
Unscrew 2 thumbscrews on back panel of CPU
2.
Unscrew 3 thumbscrews on back w/ 486MXE model
3.
Slide cover forward and lift up off of chassis
Field Replaceable Units
Memory
OEM Part
IBM Part
4MB SIMM
38393
22H2932
8MB SIMM
31520
22H2933
1MB X 32
35234
22H2934
8MB SIMM
38394
22H2935
4MB X 32
35236
22H2936
16MB SIMM
31522
22H2939
32MB SIMM
41227
22H3195
