You’re exploring view-only access. Upgrade to download, save, and use offline.
01
Create account
02
View Manuals
03
Upgrade Anytime
04
Full Control
emanuals
View Online
Preview Available
Full View Available
Main image
Click to view image in fullscreen
![]()
📄 PDF
16.93 MB
🔒
Secure transaction
DELL optiplex-990-Service-Manual
File Type:
PDF
16.93 MB
You have view access to this Manual.
Upgrade to download, save, and use offline anytime.
You have no view access to this Manual.
Reactivate membership to use online
MOST POPULAR
$16.42/mo
Billed annually as $197
Save 50% vs monthly
MONTHLY
$33/mo
Cancel Anytime
Download format
PDF
Quick Actions
Add to My Library
Share Manual
Browse Related Manuals
Report an Issue
01
02
03
Create free
account
account
Get full view access to PDF manuals
and 5 × 10 mins software session.
and 5 × 10 mins software session.
Upgrade or
cancel anytime
cancel anytime
5M+
Manuals
Access the largest digital library of repair manuals — all in one place.
80+
less time spent
troubleshooting
troubleshooting
Skip the guesswork with detailed, step-by-step instructions.
50+
Categories covered
From vehicles to tech, tools, appliances & more — all included.
Description
What's Inside
Reviews
Q&A
The Optiplex 990 Service Manual provides step-by-step methods for repairing or replacing internal parts. This repair-service guide includes text and high-quality graphics for disassembly/reassembly instructions, repair and upgrade procedures, part replacement notices, service information, troubleshooting, software updating, and adjustments/corrections. These detailed manuals are utilized by professional technicians and can assist in troubleshooting and repairing your desktop PC. Each manual is fully illustrated with pictures and offers printable pages for convenience. Whether at home, the office, or a repair shop, you can use this guide to perform your own repairs and save money.
- Repair your desktop PC and save money.
- Earn money by repairing others' desktop PCs.
- Use this guide to modify your desktop PC.
- Gain knowledge about your desktop PC's internal parts.
OEM-Level Service Instructions
Step-by-step procedures written for your exact model.
Diagnostic & Troubleshooting Flowchart
Pinpoint faults fast without guesswork.
Wiring Schematics & Technical Diagram
Full electrical and mechanical layouts.
Technical Specs, Torque Values & Part Numbers
Every measurement you need for the job.
Disassembly, Maintenance & Repair Procedure
Complete teardown and rebuild guides.
Recently Viewed Manuals
Pick up from you left off
95% of our members rate emanuals
Compare Us To The Rest
We believe in offering you the best value, most extensive manual collection,
and top-notch customer support - all at a price that's hard to beat!
Features
- Price
- Manuals
- Offline Access
- 24/7 Support
- Device Limit
- Categories
Emanuals
- $197/year
- 5M+
- Unlimited
- Cars & 29+ categories
Haynes
- $499/year
- 825
- 1
- Cars only
AllData
- $2,388/year
- 44,000
- 1
- Cars only
Core Features Emanuals
Price
$197/year
Manuals
5M+
Offline Access
24/7 Support
Device Limit
Unlimited
Categories
Cars & 29+ categories
Core Features Haynes
Price
$499/year
Manuals
825
Offline Access
24/7 Support
Device Limit
1
Categories
Cars only
Core Features AllData
Price
$2,388/year
Manuals
44,000
Offline Access
24/7 Support
Device Limit
1
Categories
Cars only