About Your System Board

Dell Precision™ T3500 Service Manual

  Password Enable Jumper

  NVRAM Reset Jumper

  System Board Schematic


WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.

Your computer's system board offers two jumpers—a password enable jumper and a RTCRST (Real Time Clock Reset) jumper.

Password Enable Jumper

PSWD - Password enable. The system password will be cleared and disabled when the system is started with this jumper removed.

Pins 1-2 shorted enables password

NVRAM Reset Jumper

RTCRST - Clears NVRAM. The NVRAM will be cleared when the jumper is closed (use the jumper from the password bridge). To properly clear; AC power must be applied (not necessarily turned on) to the system for about 10 seconds while the jumper is closed.

Pins 1-2 shorted clears NVRAM

The picture below shows the location of the configuration jumpers on the system board.

NOTE: You can use the RTCRST jumper procedure above to attempt recovery from a No POST, No Video situation.

System Board Schematic

Image - Illustrates the back connections.

1 PCI Card Slot (Slot 6) 2 PCI Card Slot (Slot 5)
3 PCIe x16 (Slot 4) 4 PCIe x4 (Slot 3)
5 PCIe x16 (Slot 2) 6 PCIe x4 (Slot 1)
7 Audio Front Panel (FP_AUDIO) 8 Internal USB (USB_1)
9 LPC_DEBUG 10 Processor Connector
11 CPU Power Connector (POWER_CPU) 12 Front Bezel Fan (FAN_Front)
13 Front Cage Fan (FAN_CCAG) 14 Memory Module (RAM) Connectors (DIMM_1-6)
15 Jumpers (PSWD & RTCRTS) 16 Battery Socket (CMOS Battery)
17 Internal USB Socket (for Flexbay Card Reader) 18 Main Power Connector
19 SATA Connectors (SATA_0-4) 20 HDD Fan (FAN_HDD)
21 Serial Connector (SERIAL2) 22 FDD Connector
23 Front Panel Connector (FRONTPANEL) 24 Chassis Intrusion Connector (INTRUDER)