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 kupdmong on December 23rd, 2013
How Can I Test Optiplex 780 Power Supply
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Current Answers
Answer #1: Posted by prateekk007 on December 23rd, 2013 11:44 AM
prateekk007
Member since:
December 5th, 2012 Points: 2,137,520
Member since:
December 5th, 2012 Points: 2,137,520
Hi kupdmong,
I would suggest you to run Dell diagnostics on the system to check for hardware functionality. To run diagnostics, turn on the system, press <F12> at the initial Dell logo screen, and select Diagnostics from the boot menu. If you get any error message please make a note of it and let me know. You may also refer to page number 11 on the link given below:
You may also watch an online video regarding the same:
Please reply if you have further queries.
To know more about Dell Product Support, Drivers & Downloads, Order & Dispatch status -> choose your region US Customers; India Customers. For Here for Dell support videos.
Thanks & Regards
Prateek K
Related Dell OptiPlex 780 Manual Pages
Setup and Features Information Tech Sheet (Desktop, Mini-Tower, Small Form Factor) - Page 1
...optical drive 3 USB 2.0 connectors (2) 5 power button, power light 7 network connectivity light 9 headphone connector
March 2010
15
14
13
2 optical drive eject button 4 drive activity light 6 diagnostic lights (4) 8 microphone connector 10 Media Card Reader (optional)
Models: DCSM1F, DCNE1F, DCCY1F, DCSM, DCNE, and DCCY series
Dell™ OptiPlex™ 780 Setup and Features Information...
Setup and Features Information Tech Sheet (Desktop, Mini-Tower, Small Form Factor) - Page 8
... amber light when the computer does not start indicates a problem with the system board. one Mini-Tower and Desktop - Blinking amber light indicates a problem with the system board or power supply. two
Mini-Tower -
two Desktop and Small Form Factor - Amber light - Blinking green light indicates that the computer is not detecting a physical connection...
Setup and Features Information Tech Sheet (Desktop, Mini-Tower, Small Form Factor) - Page 9
... 34.00 cm (13.40 inches)
Mini-Tower - 11.70 kgs (25.80 lbs) Desktop - 8.26 kgs (18.20 lbs) Small Form Factor - 6.80 kgs (15.00 lbs...Power
Wattage
Mini-Tower - 305 W (non-EPA) or 255 W (EPA) Desktop - 255 W Small Form Factor - 235 W
Maximum heat dissipation
Mini-Tower - 1041 BTU/hr Desktop - 955 BTU/hr
Small Form Factor - 938 BTU/hr
NOTE: Heat dissipation is calculated by using the power supply...
Setup and Features Information Tech Sheet (Ultra
Small Form Factor) - Page 7
... with your computer for important
voltage-setting information. When the system's power supply voltage is calculated by pressing
the test button. If the LED does not light up, the power supply may be connected during this test. A test button and LED are on and is functional.
Power
Wattage
180 W
Maximum heat dissipation
750 BTU/hr
NOTE: Heat dissipation...
Service Manual - Page 3
... hold the power button while the system is not covered by a certified service technician. Ensure that shipped with your work , periodically touch an unpainted metal surface to help to ground the system board. 7.
As you begin working inside the computer.
1. Working on Your Computer
Dell™ OptiPlex™ 780 Service Manual-Desktop
Before Working...
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 10
... network and the computer. a good 1000 Mbps connection exists between the network and the computer.
NOTE: See the safety information that network activity is present.
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 12
...wait until you see the Microsoft® Windows® desktop. On the next startup, the computer boots according to...to Contents Page
Diagnostics
Dell™ OptiPlex™ 780 Service Manual Dell Diagnostics Power Button Light Codes Beep Codes Diagnostic Lights... want to test displays in the system setup program. 3.
When the Dell Diagnostics Main Menu appears, select the test that you...
Service Manual - Page 14
...Initial state of the light at power up . Look at power up . Indicates the POWER_GOOD signal is active and it is probable that the power supply is fine. Second state of light... failure
1-2-2
DMA initialization failure
1-2-3
DMA page register read/write failure
1-3
Video Memory Test failure
1-3-1 through 2-4-4 Memory not being properly identified or used
3-1-1
Slave DMA register ...
Service Manual - Page 24
..., remove the secondary hard drive from the computer. 3. Disconnect the hard-drive data cable.
5. Back to Contents Page
Primary Hard Drive
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 Working Inside Your Computer...
Service Manual - Page 28
Back to Contents Page
Floppy Drive
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 Working Inside Your Computer. 2. Disconnect the floppy-drive power cable.
For additional safety best practices information, see the Regulatory Compliance Homepage...
Service Manual - Page 36
Follow the procedures in Before Working Inside Your Computer. 2. Disconnect the processor power connector from the system board.
6. Remove the optical drive. 3. Back to Contents Page
Power Supply
Dell™ OptiPlex™ 780 Service Manual-Desktop
WARNING: Before working inside your computer, read the safety information that shipped with your computer. Remove the secondary hard ...
Service Manual - Page 42
... procedures in Before Working Inside Your Computer. 2. Disconnect the fan power cable from the system board.
3.
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...
Service Manual - Page 55
... Inside Your Computer. 2.
Disconnect the optical-drive power cable. Disconnect the optical-drive data cable.
3. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance. Back to Contents Page
Optical Drive
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 17
... to confirm the output 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 input Voltage Range AC input current...
Technical Guide - Page 46
... other reported operating modes. 2 Declared Sound Power rounded to ISO 9296 except 90% CPU. This test mode is not specified in accordance with ISO 9296 for this mode, the system CPU was measured using the same microphone distances and measurement techniques defined for the Dell OptiPlex 780 MT is as follows: (all values LWAd...
Technical Guide - Page 47
... Configuration Declared Sound Power (LWAd)
High-end Configuration Declared Sound Power (LWAd)
Idle
...tests are measured in accordance with ISO 7779 7.6.1, 7.6.2, and C.15.2 and declared in decibels (re 2x10-5 Pa), at 90% utilization with ISO 9296 for this mode, the system CPU was measured using the same microphone distances and measurement techniques defined for the Dell OptiPlex 780...
Technical Guide - Page 48
...test mode is not specified in accordance with no other reported operating modes. 2 Declared Sound Power rounded to ISO 9296 except 90% CPU. DELL™ OPTIPLEX™ 780 TECHNICAL GUIDEBOOK V2.0
ACOUSTIC NOISE EMISSION INFORMATION
OPTIPLEX 780...
The Declared Noise Emission in accordance with ISO 9296 for the Dell OptiPlex 780 SFF is as follows1:
Operating Mode
Idle HDD Operating 90% CPU ...
Technical Guide - Page 49
... A-weighted Sound Pressure Level in accordance with no other reported operating modes. 2 Declared Sound Power rounded to ISO 9296 except 90% CPU. For this product is not specified in ISO ... the same microphone distances and measurement techniques defined for the Dell Optiplex 780 USFF is as follows1:
1 All tests are conducted according to ISO 7779 and declared according to nearest tenth ...
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