To find the correct technical documentation, locate the white rectangular or square barcode sticker on your board. How to identify Dell motherboard part number
Dell E93839 Motherboard Schematic High Quality
Introduction
The Dell E93839 motherboard is a high-performance motherboard designed for Dell's E93839 system. Having a high-quality schematic of this motherboard can be invaluable for engineers, technicians, and enthusiasts looking to understand, repair, or modify the board.
What is a Schematic Diagram?
A schematic diagram is a visual representation of the motherboard's circuitry, showing the relationships between components, connections, and pathways. A high-quality schematic diagram is essential for:
Key Features of the Dell E93839 Motherboard
The Dell E93839 motherboard supports:
Benefits of a High-Quality Schematic
A high-quality schematic diagram of the Dell E93839 motherboard provides:
Obtaining a High-Quality Schematic
To obtain a high-quality schematic diagram of the Dell E93839 motherboard, you can:
Conclusion
Having a high-quality schematic diagram of the Dell E93839 motherboard is essential for understanding, repairing, or modifying the board. By obtaining a reliable and accurate schematic, engineers, technicians, and enthusiasts can work with confidence and efficiency. If you have any information or resources related to the Dell E93839 motherboard schematic, please share in the comments below.
Understanding the Dell E93839 Go to product viewer dialog for this item. Motherboard: Specs, Identification, and Schematics Dell E93839
" is a widely searched part number, though it can be a bit confusing for those trying to track down technical documentation. This identifier is actually a UL (Underwriters Laboratories) certification number rather than a specific motherboard model. It appears on several different boards produced by manufacturers like Foxconn or BQTEC for various Dell OptiPlex systems.
If you are looking for high-quality schematics for repair or tinkering, here is what you need to know to find the right files. 1. Identifying Your Specific Board
Because "E93839" covers multiple generations of hardware, you must first find the true Part Number (P/N) to locate a matching schematic. E93839 - Dell - Tech Atlantix
The Dell E93839 is not a specific motherboard model name, but rather a UL identification number (E93839) often found on boards manufactured by Foxconn for Dell and HP systems. Detailed schematics are rarely released publicly by manufacturers, but technical specifications and system board layouts for the specific models associated with this number are available in official service manuals. Associated Dell Models
This identification number is most commonly linked to the motherboards of the following Dell OptiPlex series: REFURB Dell OptiPlex 780 SFF PC Rp 2.362.757(US$136,95) eBay - buy-best Go to product viewer dialog for this item.
Utilizes the Intel Q45 Express chipset and supports LGA1155 socket processors.
Dell Optiplex 790 Sff Intel I5-2400 3.1ghz 8gb Ram Amd Radeon 6450 1gb Rp 862.635(US$50,00) Go to product viewer dialog for this item.
Features LGA 1155 socket support for 2nd Gen Intel Core processors and DDR3 memory.
Dell Optiplex 390 Mt Computer Fisso Desktop Vga Hdmi Dvd-Rw Pc - Windows Xp - Celeron Rp 1.618.027(€80,00) Go to product viewer dialog for this item. Dell E93839 Motherboard Schematic High Quality
Often found in Mini-Tower (MT) and Small Form Factor (SFF) configurations. Technical Specifications (Common for E93839 marked boards) DELL OPTIPLEX 390
Finding a high-quality schematic for the Dell E93839 motherboard can be tricky because "E93839" is a regulatory mark used across several different Dell OptiPlex models. To get the exact schematic or pinout, you first need to identify your specific system model (like the OptiPlex 780, 790, or 9010) or the Part Number (e.g., LA0601). cdn.prod.website-files.com 🛠️ Common Variants & Specs Depending on your board's secondary version (e.g., ), the hardware features will vary significantly: OptiPlex 780 : Core 2 Quad / Duo. : Up to 8GB DDR3 (1066 MHz). : USB 2.0, DisplayPort, VGA. OptiPlex 790 (LGA 1155) : Intel 2nd/3rd Gen Core i3/i5/i7. : Up to 16GB or 32GB DDR3 (1600 MHz). : SATA III (6.0 Gb/s) support. OptiPlex 7020 (LGA 1150) : Intel 4th Gen Haswell. : Intel Q87. 🔌 Front Panel Pinout Guide
Most users seek schematics to bypass proprietary Dell connectors when moving the board to a new case. While Dell doesn't publish official schematics, community-verified pinouts for the common 5x2 or 34-pin headers Power Button : Often the (positive) and (ground) wires on the proprietary plug.
: Usually the first two pins on specific proprietary headers.
: Standard 9-pin internal headers are often present alongside proprietary ones. Diagnostics : If the board won't boot, check the four diagnostic LEDs usually located on the front panel or motherboard surface. E93839 motherboard dell
Finding a high-quality schematic for the Dell E93839 motherboard can be difficult because "E93839" is a UL (Underwriters Laboratories) certification number rather than a specific Dell part number. This number is found on many Dell boards from the OptiPlex series (like the 780, 790, and 990).
To get the correct guide or schematic, you first need to identify your specific motherboard model. 1. Identify Your Motherboard Model Since "E93839" is generic, look for the DP/N (Dell Part Number) . This is usually a 5-digit alphanumeric code (e.g., ) found on a white sticker with a barcode. OptiPlex 780 SFF : Often uses board OptiPlex 990 : Often uses board 2. Accessing Schematics & Manuals
Once you have the specific model or DP/N, use these resources for high-quality technical guides: Official Dell Service Manuals : Dell provides detailed Service Manuals
that include component locations, connector pinouts (like the front panel), and diagnostic LED codes. Scribd & Technical Repositories
: Detailed circuit schematics (often 40-60 pages) are rarely public on Dell's site but are frequently hosted on for specific board names like the OptiPlex 990. Community Forums : Sites like Linus Tech Tips
often have user-shared links to high-quality PDF schematics for older Dell hardware. 3. Key Component Specs (General E93839)
While boards vary, most "E93839" boards from the OptiPlex era share these common traits: Power Supply
: Typically requires a 240W unit; be cautious with proprietary Dell connectors if upgrading. : Usually features 2-3 SATA ports. Diagnostics : If the board fails, you can run a Built-in Self-Test (M-BIST) by holding the
key and the power button while checking the battery/power LED. cdn.prod.website-files.com Summary of Best Resources Resource Type Recommended Source Official Manuals Dell Support Manuals Circuit Schematics Scribd Motherboard Documents Repair Video Guides YouTube Capacitor & Board Repair What specific Dell OptiPlex model (e.g., 780, 990, 7010) or 5-digit DP/N
are you working with so I can find the exact schematic for you? OptiPlex 790 Owner's Manual (Desktop) - Download.dell.com
Finding a Dell E93839 motherboard schematic in high quality is essential for technicians performing board-level repairs, tracing power rails, or diagnosing "no-power" symptoms in legacy OptiPlex systems.
The E93839 is not a single motherboard model but rather a UL certification number used across multiple Dell and HP OEM boards manufactured by Foxconn. To find the exact schematic, you must identify your board's specific Dell Part Number (DPN), such as D517D or GA0403. Core Specifications by System Model
Because the "E93839" mark appears on various boards, specifications differ significantly depending on the host machine: System Model Socket Type Memory Support OptiPlex 760 DDR2 (Up to 8GB) OptiPlex 780 DDR3 (Up to 8GB) OptiPlex 790 DDR3 (Up to 16GB) OptiPlex 7070 Intel Q370 DDR4 (Up to 64GB) How to Locate High-Quality Schematics
Official Dell schematics are proprietary and rarely released to the public. However, high-quality "BoardView" files and PDF diagrams can often be sourced through specialized technician communities:
Identify the Revision: Look for a white sticker with a barcode. The DPN is the 5-character string following the country code (e.g., "CN-0GM819").
Technician Databases: High-resolution diagrams are frequently hosted on platforms like Laptop-Schematics or specialized Telegram Archive Channels used by repair professionals.
Search by Chipset: If a direct match for "E93839" is unavailable, search for the chipset model (e.g., "Intel Q45 Motherboard Schematic") to find reference designs that share the same power delivery architecture. Critical Diagnostic Areas
When using a schematic to repair these boards, pay close attention to these common failure points: E93839 - Dell - Tech Atlantix To find the correct technical documentation, locate the
While "E93839" is a common marking found on motherboard PCBs, it is actually a UL certification number (assigned to the manufacturer Foxconn) rather than a specific Dell model number. This marking appears on several different Dell OptiPlex motherboards, making a single "high-quality schematic" dependent on which specific system you have. Most Common Boards with E93839 Marking
Because this marking is used across different generations, you must identify your specific system model to find the correct documentation:
Dell OptiPlex 7010 / 9010 (LGA1155): Often carries the "E93839" mark and uses the Intel Q77 Express chipset.
Dell OptiPlex 780 (LGA775): Older generation using the Intel Q45 Express chipset.
Dell OptiPlex 390 / 790 (LGA1155): Uses the Intel Q65 or H61 chipset. How to Find Your Actual Schematic
Proprietary Dell motherboard schematics are not typically released to the public. However, technicians often use Boardview files and specialized PDF schematics found in repair communities:
Identify the Part Number: Look for a small white sticker with a barcode. The string of characters following "CN-0" (or similar) is the actual Dell part number (e.g., 0GDG8Y, 0M9KCM).
Search Technical Archives: Use that specific part number to search sites like the BadCaps Forum or VinaFix, which host high-quality PDF schematics for technicians. Official Manuals:
For component layouts and connector pinouts (but not circuit diagrams), you can use the Official Dell Support Manuals by entering your system's Service Tag. General Specifications for Common "E93839" Dell Boards Manuals | Dell US
The Dell E93839 is not a specific motherboard model but a regulatory mark (UL certification number) found on several boards, most commonly those used in the Dell OptiPlex 780 series. Schematic and Manual Resources
For full circuit diagrams and component-level repair, you can access these high-quality resources:
Circuit Schematic (PDF): Detailed schematics for the OptiPlex 780 (often associated with motherboard part 0T656F) are available for download on ChinaFix.
Official Service Manual: Dell provides layout diagrams and connector descriptions in the OptiPlex 780 Service Manual.
Component-Level Guide: Technical boardviews and PDFs can sometimes be found in archives like DeviceDB. Hardware Specifications Based on the OptiPlex 780 implementation: Socket: LGA 775 (Supports Intel Core 2 Duo, Pentium). Chipset: Intel Q45 / ICH10. Memory: 4x DDR3 DIMM slots (up to 16GB, 1066/1333 MHz). Expansion: 1x PCIe x16, 2x PCI.
I/O Ports: 6x USB 2.0 (rear), VGA, DisplayPort, eSATA, Serial, Parallel. Front Panel Pinout (Standard Case Swap)
If you are performing a "case swap" to a standard ATX case, the proprietary 34-pin front panel header typically follows this common Dell pattern:
Power Switch: Pins 20 and 9 (or shorting specific pins based on the sub-model). HDD LED: Pins 22 and 4. Power LED: Pin 23 (+) and Pin 4 (-). E93839 - Dell - Tech Atlantix
The Dell E93839 motherboard is a reliable workhorse, but when it fails, guessing is not a repair strategy. A high-quality schematic transforms a mysterious green slab into a readable circuit of logic gates, power planes, and test points.
While the search requires digging through paid forums and verifying file integrity, the time saved in diagnosing a single “dead” board pays for itself tenfold. Do not settle for blurry, watermarked, or incomplete PDFs.
Final Pro Tip: When searching, use the exact string "E93839 Rev A00" boardview rather than just "schematic." Boardview files coupled with the schematic give you X-ray vision into the multi-layer PCB.
Equip your workbench with this essential document, and you will master one of Dell’s most robust business platforms.
Disclaimer: Schematics are for educational and repair purposes only. Respect copyright laws and Dell’s proprietary information. Always verify component values against physical board markings.
While "E93839" is often listed as a model number on resale sites, it is actually a UL regulatory mark Troubleshooting : Identifying faults and problems with the
for Foxconn. This mark appears on various Dell motherboards across several different generations and series, making it critical to identify your specific board by its Dell Part Number (DPN) —a 5 or 6-character code (e.g., ) found near the barcode. Common Dell Boards Labeled "E93839"
Because this mark is shared, "E93839" can refer to completely different hardware: OptiPlex 780 Series : Uses the Intel Q45 Express chipset with an socket and supports up to 8GB of DDR3 1066MHz memory OptiPlex 790/990 Series : Features the Sandy Bridge architecture and uses an socket with 4 DDR3 slots. OptiPlex 7020 /9020 Series : Newer boards utilizing the socket and Intel Q87/Q77 PowerEdge R420 : High-end server boards with sockets and 12 memory slots. Technical Resources & Documentation
Official high-quality schematics (circuit diagrams showing every component connection) are proprietary to Dell and Foxconn and are not typically released to the public. However, you can find official layout and repair information: Service Manuals
: Dell provides high-quality PDF manuals for every system model. Use the Dell Support Manuals Portal and enter your specific PC model (e.g., " OptiPlex 7010 ") or Service Tag Motherboard Built-in Test (M-BIST)
: To diagnose hardware failures without a schematic, hold the Power button
simultaneously; a solid amber light indicates a motherboard failure. Third-Party Schematics
: For board-level repair (soldering), professional technicians often use paid databases like
, which sometimes contain unofficial reverse-engineered schematics for popular Dell boards. Identifying Your Specific Board
To find the correct manual or replacement part, locate the small white sticker on the motherboard. The is the segment following the country code (e.g., in
is not a specific motherboard model, but a UL (Underwriters Laboratories) certification number found on various Dell and HP motherboards manufactured by Foxconn. To find a high-quality schematic, you must first identify your specific board model, typically found on a white sticker or printed in large letters (e.g., 1. Identifying Your Motherboard Version
covers multiple generations, your "schematic" depends on your hardware: OptiPlex 780 (LGA 775):
Uses DDR3 RAM, Intel Q45 chipset, and supports Core 2 Quad processors. OptiPlex 790 /7010 (LGA 1155): Often designated as
; supports 2nd/3rd Gen Intel Core i-series and up to 32GB DDR3. OptiPlex 3040 /7020 (LGA 1150/1151): Newer versions supporting 4th to 6th Gen Intel processors. 2. Front Panel Header Pinout (Common 20-Pin Layout)
For users doing a "case swap" to a standard ATX case, the proprietary Dell front panel header is the most sought-after part of the schematic. Pin Number Pin Number Power LED + Power LED - Power Switch Power Switch No Connection Ground (Common)
If you are missing the proprietary Dell power button, you can short pins 5 and 6 to turn the system on. 3. Finding Official Documentation
Official schematics (circuit-level diagrams) are rarely released publicly by Dell. However, you can find high-level board layouts and diagnostic guides: Dell Support Manuals: Enter your "Service Tag" on the Dell Support Manuals Page to get the specific Service Manual for your machine. Repair Communities: Sites like Laptop Schematics
often host boardview and PDF schematics for specific Foxconn models like the 4. Hardware Specifications (Reference) Typical E93839 Spec ( OptiPlex 7010 Intel Q77 / Q65 4 Slots, DDR3-1333/1600 MHz (Up to 32GB)
Proprietary Dell 240W-275W or Standard 24-pin (depends on SFF vs MT) 2x SATA III (6 Gbps), 1x SATA II connectors? E93839 motherboard dell
Corrupt BIOS is a nightmare on the E93839. Look for the SPI flash ROM (usually Winbond 25Q64). A high-quality schematic will clearly label pin 1 (CS), pin 6 (CLK), and pin 2 (DO). It will also show the exact voltage (3.3V standby) required for programming.
The E93839 silkscreen appears near the RAM slot. But always match the PCB revision number (e.g., Rev: 1.0, 2.0, 3.0). A Rev 3.0 schematic often has different pull-up resistors and missing components compared to Rev 1.0.
Once you obtain a genuine high-quality schematic for the E93839, here is what the internal structure looks like:
.brd or .cad) – it tells you exactly where each component sits. Pair it with OpenBoardView (free).| Rail | Value | Found On | |------|-------|-----------| | VCC_RTC | 3.0V | Battery connector | | +3.3V_ALW | 3.3V | Always-on (SIO, PCH) | | +1.05V_ME | 1.05V | PCH core | | VCC_DDR | 1.2V | RAM slots | | VCC_VCORE | 0.7–1.4V | CPU coils |
You have the file. Now what? Open it in Foxit Reader or Adobe Acrobat (not your browser’s PDF viewer, as they degrade quality).
PS_ON pull-up (R874 – 1kΩ), PWRBTN signal to I/O.ICH_PLTRST#, CPUPWRGD, and RAM VDDSPD pin 236.+5V_USB fuse F210 and USBPHY_OC# line.Low-resolution or incomplete scans are useless. Authentic high-quality E93839 documentation features:
+3.3V_RUN, PCH_VCCA, DDR_VTT, TP17.