Dell OptiPlex 780 Support Question
Dell OptiPlex 780 Support Question
Find answers below for this question about Dell OptiPlex 780.Need a Dell OptiPlex 780 manual? We have 6 online manuals for this item!
Question posted by Anonymous-127780 on December 31st, 2013
I Have Get Problem On Mother Board How Can Cheak The Problem On System Board
on three 780 dell computer i have got the same problem the powere supply is ok but the syteme board is not work how can i cheak the problem was exactly on system board
Current Answers
Answer #1: Posted by TommyKervz on December 31st, 2013 6:55 AM
TommyKervz
Member since:
January 10th, 2013 Points: 17,776,813
Member since:
January 10th, 2013 Points: 17,776,813
Greetings. There's a Service Manual for the model here.
Related Dell OptiPlex 780 Manual Pages
Setup and Features Information Tech Sheet (Desktop, Mini-Tower, Small Form Factor) - Page 8
...indicates a problem with the system board or power supply.
Diagnostic lights
Four lights located on state; two Desktop and Small Form Factor - two Desktop - Solid green light indicates power-on the...diagnostic lights, see the Service Manual available on the Dell Support website at support.dell.com/manuals. one Mini-Tower and Desktop -
one Small Form Factor - Drives (continued) Internally...
Setup and Features Information Tech Sheet (Desktop, Mini-Tower, Small Form Factor) - Page 9
.../hr
Small Form Factor - 938 BTU/hr
NOTE: Heat dissipation is calculated by using the power supply wattage rating.
Voltage (see the safety information Mini-Tower - 90-265 VAC, 50/60 Hz
that shipped with your computer Desktop - 90-265 VAC, 50/60 Hz
for important voltage-setting
information)
Small Form Factor - 90...
Setup and Features Information Tech Sheet (Ultra
Small Form Factor) - Page 6
... indicates a problem with the system board. Displays the SATA hard drive or CD/DVD drive activity. Blue light - Four amber lights located on the Dell Support website at support.dell.com/manuals....from or writing data to the network. Blinking amber light indicates a problem with the system board or power supply. For information on the diagnostic lights, see the Service Manual available on...
Service Manual - Page 3
...is not authorized by Dell is unplugged to ground the system board. 7. To avoid damaging...Working on Your Computer
Dell™ OptiPlex™ 780 Service Manual-Desktop
Before Working Inside Your Computer Recommended Tools Turning Off Your Computer After Working Inside Your Computer
Before Working... in on Your Computer. Press and hold the power button while the system is not covered by ...
Service Manual - Page 5
Back to Contents Page
Removing and Replacing Parts
Dell™ OptiPlex™ 780 Service Manual-Desktop
Cover Primary Hard Drive Floppy Drive (Optional) Expansion Card Memory Power Supply Fan System Board
Optical Drive Secondary Hard Drive (Optional) Riser Cage Standard Back Plate Heat Sink and Processor Coin-Cell Battery IO Panel
Back to Contents Page
Service Manual - Page 6
... Connectors
Controls and Lights Network Audio Power System Board Connectors Physical Environmental
NOTE: Offerings may... vary by region. FSB up to 256 MB shared video memory (total system memory greater than 512 MB)
PCI Express x16 slot supports either a PCI Express card or a DVI add-on card (for mini-tower, desktop...
Service Manual - Page 8
...25 inch drive bay(s) Mini-tower Desktop Small form factor
3.5 inch drive bay Mini-tower Desktop Small form factor Internally accessible 3.5 inch drive bay(s) Mini-tower Desktop Small form factor
for SATA DVD...
two connectors six connectors one 15-hole VGA connector one 20-pin DisplayPort connector
System Board Connectors PCI 2.3
Mini-tower
data width (maximum) - 32 bits two 120-pin connectors...
Service Manual - Page 9
... computer is in power-on state blinking amber - indicates a problem with the system board solid amber - indicates that the computer is reading data from or writing data to the hard drive green - Desktop Small form factor
PCI Express x1 Mini-tower Desktop Small form factor
PCI Express x16
Serial ATA Mini-tower Desktop Small form factor...
Service Manual - Page 10
... inches) 39.90 cm (15.70 inches) 31.40 cm (12.40 inches) yellow - a good 1000 Mbps connection exists between the network and the computer.
Power
DC power supply
Wattage
Mini-tower
305 W (non-EPA) or 255 W (EPA)
Desktop
255 W (EPA)
Small form factor
235 W (EPA)
Maximum heat dissipation
Mini-tower
1041 BTU/hr...
Service Manual - Page 14
...is in S0 state, the normal power state of beeps that identifies the problem or that an onboard regulator or VRM has failed. Solid Green
System is in a low power state, either S1 or S3.... the POST, the computer may be replaced.
Most beep codes indicate a fatal error that the power supply needs to determine which state the system is not yet active. Beep Codes
If the monitor cannot...
Service Manual - Page 16
...working memory of the same type into your computer. Ensure that the memory you are detected. Determine if a conflict exists by your computer (see the "Specifications" section for your computer). If the problem persists, contact Dell... on the screen identifying a problem with a device (such as the floppy drive or hard drive), check the device to the system board .
Ensure that no special ...
Service Manual - Page 17
...does not make any changes to the boot order stored in the exact same order. General
System Board
Displays the following keystrokes to navigate the System Setup screens. Press to...also included in the BIOS. Back to Contents Page
System Setup
Dell™ OptiPlex™ 780 Service Manual-Mini-Tower, Desktop, and Small Form Factor
Boot Menu Navigation Keystrokes Entering System ...
Service Manual - Page 32
... out of its connector on the card-retention latch upwards. 3. Removing the Expansion Card(s)
1. Rotate the release tab on the system
board. Back to Contents Page
Expansion Card(s)
Dell™ OptiPlex™ 780 Service Manual-Desktop
WARNING: Before working inside your computer, read the safety information that shipped with your computer. Follow the procedures in Before...
Service Manual - Page 36
... the processor power connector from the system board.
6. Follow the procedures in Before Working Inside Your Computer. 2. Disconnect the main power connector from the system board. Remove the hard drive. 5. Removing the Power Supply
1. Remove the optical drive. 3.
Back to Contents Page
Power Supply
Dell™ OptiPlex™ 780 Service Manual-Desktop
WARNING: Before working inside your...
Service Manual - Page 42
Disconnect the fan power cable from the system board.
3. Removing the Fan
1. Follow the procedures in Before Working Inside Your Computer. 2. Pull out the fan retention tab, and then shift the fan towards the system board. Back to Contents Page
Fan
Dell™ OptiPlex™ 780 Service Manual-Desktop
WARNING: Before working inside your computer, read the safety information that...
Service Manual - Page 45
...cage. 3. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Disconnect the floppy-drive data cable from the system board. Back to Contents Page
System Board
Dell™ OptiPlex™ 780 Service Manual-Desktop
WARNING: Before working inside your computer, read the safety information that shipped with your computer.
Service Manual - Page 63
...-port cable from the system board.
3. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Back to an upright position. Removing the Riser Cage
1. Pivot the riser-cage handle to Contents Page
Riser Cage
Dell™ OptiPlex™ 780 Service Manual-Desktop
WARNING: Before working inside your computer, read the...
Technical Guide - Page 3
DELL™ OPTIPLEX™ 780 TECHNICAL GUIDEBOOK V2.0
MINI TOWER COMPUTER (MT) VIEW
FRONT VIEW 1 Optical Drive (optional)
2 Optical Drive Eject Button 3 Optical Drive Bay
7 Power Button, Power Light
8 Diagnostic Lights (4)
9 Headphone Connector
BACK VIEW 1 Power Connector 2 Back-Panel Connectors 3 Expansion Card Slots (4)
4 Power-Supply Vent 5 Chassis Lock Loop 6 Cover Release Latch
4 ...
Technical Guide - Page 13
...DELL™ OPTIPLEX™ 780...Dell Business Audio Speaker Dell AX210 2.0 Desktop Speakers Dell AX510/AX510PA Flat Panel Soundbar Speakers Dell AY410 30W 2.1 Stereo Speakers with Subwoofer
KEYBOARD AND MOUSE
Dell USB Entry Keyboard with optional palmrest Dell QuietKey Keyboard with optional palmrest Dell Multimedia Pro Keyboard Dell Smartcard Keyboard Dell USB Optical Mouse Dell Laser Mouse Dell...
Technical Guide - Page 17
Dell recommends only Universal Power Supplies (UPS) based on PSU max wattage)
0.5A 305W 80W
240W
1603 BTU
0.5A 255W 80W
...type. DELL™ OPTIPLEX™ 780 TECHNICAL GUIDEBOOK V2.0
POWER
NOTE: These form factors utilize a more than one 12v rail)
BTUs/h (based on Sine Wave output for APFC PSUs, not an approximation of a Sine Wave, Square Wave, or quasi-Square Wave. Power Supply Wattage
AC...
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