Dell E93839 Motherboard Schematic High Quality =link= Info

On page 3 of the schematic, locate the RTCRST# and SRTC_RST# circuits. Measure voltage at the test point. Should be 3.0V using the CMOS battery. If 0V, replace the battery or check diode D32.

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 Dell E93839 Motherboard Schematic High Quality