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OptiPlex 486/SL ,LE , L, M, ME,MXEOptiPlex 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
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