Dell C540 Pin Assignments for I/O Connectors

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Pin Assignments for I/O Connectors

Dell™ Latitude™ C540/640 Service Manual

USB Connector

Pin Signal

1 VCC

2 –Data

3 +Data

4 Ground

Serial Connector

Pin Signal Pin Signal

1 DCD 6 DSR

2 RXDA 7 RTS

3 TXDA 8 CTS

4 DTR 9 RI

5 GND

Parallel Connector

Contents

Main Dell Latitude C540/C640 Service Manual Notes, Notices, and Cautions Before You Begin Preparing to Work Inside the Computer Recommended Tools Computer Orientation Screw Identification Page Page System Components Dell Latitude C540/C640 Service Manual Page Hard Drive Removing the Hard Drive Page Memory Modules, Mini PCI Card, and Modem Memory Modules Removing the Memory Modules Removing the Memory Module Cover Replacing the Memory Modules Mini PCI Card Removing the Mini PCI Card Replacing the Mini PCI Card Modem Removing the Modem Replacing the Modem Keyboard Removing the Keyboard Page Replacing the Keyboard Page Display Assembly, Display Latch, and Hinge Covers Display Assembly Page Page Removing the Display Bezel Removing the Display Panel Replacing the Display Panel Display Latch Removing the Display Latch XGA Panel Shown Replacing the Display Latch Hinge Covers Page Palm Rest Removing the Palm Rest Page Microprocessor Thermal Cooling Assembly Removing the Microprocessor Thermal Cooling Assembly Page Microprocessor Module Removing the Microprocessor Module Replacing the Microprocessor Module Hybrid Cooling Fan Removing the Hybrid Cooling Fan Page Reserve Battery Removing the Reserve Battery Replacing the Reserve Battery Flashing the BIOS Speaker Assemblies Removing the Speaker Assemblies Page Page Replacing the Speaker Assemblies System Board Removing the System Board Page Replacing the System Board Battery and Module Bay Latches Removing the Battery and Module Bay Latches Replacing the Battery and Module Bay Latches Pin Assignments for I/O Connectors Video Connector PS/2 Connector S-Video TV-Out Connector Docking Connector