Setup and Features Information Tech Sheet (Desktop, Mini-Tower, Small Form Factor)
Page 8
... two Desktop and Small Form Factor - one (slimline drive) Control Lights and Diagnostic Lights Power button light Green light - one Small Form Factor - Solid green light indicates power-on the front panel of the computer. blinking green light indicates sleep state of the computer....on the diagnostic lights, see the Service Manual available on the Dell Support website at support.dell.com/manuals. two Desktop and Small Form Factor - Blinking amber light indicates a problem with the system board or power supply. A good connection exists between the network and the computer. ...
... two Desktop and Small Form Factor - one (slimline drive) Control Lights and Diagnostic Lights Power button light Green light - one Small Form Factor - Solid green light indicates power-on the front panel of the computer. blinking green light indicates sleep state of the computer....on the diagnostic lights, see the Service Manual available on the Dell Support website at support.dell.com/manuals. two Desktop and Small Form Factor - Blinking amber light indicates a problem with the system board or power supply. A good connection exists between the network and the computer. ...
Setup and Features Information Tech Sheet (Desktop, Mini-Tower, Small Form Factor)
Page 9
... humidity 10 °C to 35 °C (50 °F to 95 °F) -40 °C to 65 °C (-40 °F to 149 °F) 20% to 80% (noncondensing) 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...
... humidity 10 °C to 35 °C (50 °F to 95 °F) -40 °C to 65 °C (-40 °F to 149 °F) 20% to 80% (noncondensing) 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...
Setup and Features Information Tech Sheet (Ultra Small Form Factor)
Page 6
... with the system board. Blinking amber light indicates a problem with the system board or power supply. Blinking blue light indicates that network activity is reading data from or writing data to...exists between the network and the computer. Yellow light - Yellow light - Solid blue light indicates power-on the front panel of the computer. Amber light - Four amber lights located on state;... sleep state of the computer. Control Lights and Diagnostic Lights Front of computer: Power button light Drive activity light Network activity light WiFi activity light (optional) Diagnostic ...
... with the system board. Blinking amber light indicates a problem with the system board or power supply. Blinking blue light indicates that network activity is reading data from or writing data to...exists between the network and the computer. Yellow light - Yellow light - Solid blue light indicates power-on the front panel of the computer. Amber light - Four amber lights located on state;... sleep state of the computer. Control Lights and Diagnostic Lights Front of computer: Power button light Drive activity light Network activity light WiFi activity light (optional) Diagnostic ...
Setup and Features Information Tech Sheet (Ultra Small Form Factor)
Page 7
...your computer for important voltage-setting information. The power supply is functional. When the system's power supply voltage is calculated by pressing the test button. NOTE: You can test the health of the power system by using the power supply wattage rating. Power Wattage 180 W Maximum heat dissipation 750 BTU...on the top side of the computer) and the electrical outlet. If the LED does not light up, the power supply may be connected to the power connector (at the back of the unit. They are not accessible from outside the system. Control Lights and Diagnostic...
...your computer for important voltage-setting information. The power supply is functional. When the system's power supply voltage is calculated by pressing the test button. NOTE: You can test the health of the power system by using the power supply wattage rating. Power Wattage 180 W Maximum heat dissipation 750 BTU...on the top side of the computer) and the electrical outlet. If the LED does not light up, the power supply may be connected to the power connector (at the back of the unit. They are not accessible from outside the system. Control Lights and Diagnostic...
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
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
... between the network and the computer. A blinking yellow light network adapter indicates that shipped with your computer for important voltage setting information. 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... cm (12.40 inches) off (no light) - NOTE: See the safety information that network activity is calculated by using the power supply wattage rating. a good 1000 Mbps connection exists between the network and the computer. a good 10 Mbps connection exists between the network...
... between the network and the computer. A blinking yellow light network adapter indicates that shipped with your computer for important voltage setting information. 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... cm (12.40 inches) off (no light) - NOTE: See the safety information that network activity is calculated by using the power supply wattage rating. a good 1000 Mbps connection exists between the network and the computer. a good 10 Mbps connection exists between the network...
Service Manual
Page 14
... . Indicates the POWER_GOOD signal is active and it is probable that the power supply needs to be generated during the POST. Solid Green System is in . Power is off , it is probable that the power supply is fine. Look at the diagnostic lights to indicate it is probable that prevents the computer from completing the...
... . Indicates the POWER_GOOD signal is active and it is probable that the power supply needs to be generated during the POST. Solid Green System is in . Power is off , it is probable that the power supply is fine. Look at the diagnostic lights to indicate it is probable that prevents the computer from completing the...
Service Manual
Page 36
... procedures in Before Working Inside Your Computer. 2. Remove the secondary hard drive (if present). 4. 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...
... procedures in Before Working Inside Your Computer. 2. Remove the secondary hard drive (if present). 4. 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...
Service Manual
Page 38
Remove the screws that secure the power supply to the back of the chassis. 8.
Remove the screws that secure the power supply to the back of the chassis. 8.
Service Manual
Page 39
9. Press the power supply release latch at the bottom of the chassis and then slide the power supply towards the front of the computer.
9. Press the power supply release latch at the bottom of the chassis and then slide the power supply towards the front of the computer.
Service Manual
Page 41
Replacing the Power Supply To replace the power supply, perform the above steps in reverse order. Back to Contents Page
Replacing the Power Supply To replace the power supply, perform the above steps in reverse order. Back to Contents Page
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 Media Card Reader (optional) 10 Microphone Connector...
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 Media Card Reader (optional) 10 Microphone Connector...
Technical Guide
Page 17
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. Dell recommends only Universal Power Supplies (UPS) based on PSU ... N/A 1235 BTU 0.5A 235W 88W N/A 921 BTU 0.1 A 180W N/A 180W 723 BTU 3.3v CMOS battery (type and estimated battery life) Power Supply Fan 80*25mm 80*25mm 92*25mm 92*25mm 80*15mm 80*15mm N/A Compliance: 1watt requirement Blue Angel Compliant Climate Savers / 80Plus Compliant FEMP...
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. Dell recommends only Universal Power Supplies (UPS) based on PSU ... N/A 1235 BTU 0.5A 235W 88W N/A 921 BTU 0.1 A 180W N/A 180W 723 BTU 3.3v CMOS battery (type and estimated battery life) Power Supply Fan 80*25mm 80*25mm 92*25mm 92*25mm 80*15mm 80*15mm N/A Compliance: 1watt requirement Blue Angel Compliant Climate Savers / 80Plus Compliant FEMP...