Dell Latitude C640

Dell Latitude C640

The Latitude C640 is a 14-inch Pentium 4M-based business laptop that was released in July 2002. It succeeded the Pentium III-based Latitude C610, with its new features including the Pentium 4M processor, faster graphics, and DDR memory. The C640 remained on sale until sometime between August and October 2003.

The C640 was also sold with altered styling as the Inspiron 4150.

Specifications

Spec Details
CPU CPU Type: Socket 478 (Northwood-M)
Intel Pentium 4M "Northwood" @1.6, 1.8, or 2.0GHz
Chipset Intel 845MP
RAM DDR, 2x Slots
Standard: Unknown
Maximum: 2GB
Hard Disk 2.5" IDE
Uses proprietary adapter?: Yes
Standard: Unknown
Display Options - 14.1" TFT LCD @1024x768
- 14.1" TFT LCD @1400x1050
Graphics Chipset ATI Mobility Radeon 7500
VRAM: 32MB
Audio Crystal 4205
Main Battery Lithium Ion
CMOS Battery 6-cell Varta NiMH (2x3)
Power Supply Latitude C-Series 3-pin
- Dell PA-2, PA-6, or PA-9
Disk Drives Latitude C-Series Modular Bay supporting the following:
- Various CD & DVD Drives
- 3.5" 1.44MB Floppy Drive
- ZIP Drive
- 2nd HDD
- 2nd Battery
PC Cards 2x PCMCIA/CardBus Slots
Networking - Modem
- Ethernet
- WiFi (Optional)
Other I/O - 1x Parallel
- 1x Serial
- 1x VGA Out
- 1x PS/2
- 1x USB 1.x
- 1x S-Video Out
- 1x Dock Connector
- 1x Line Out
- 1x Mic In
- Infrared
BIOS Dell BIOS (Phoenix-based)
Pointing Device Trackpad and TrackPoint

Resources


Drivers

User Manual

Service Manual

Schematic

Common Faults & Maintenance

CMOS Battery Leaks

The Varta NiMH CMOS battery in the C640 is highly prone to leaking and should be removed from every single C640 if original. The battery is under the keyboard. Unlike the C610, it isn't directly over the motherboard, but a leak will still cause corrosion around the battery connector.

Lid Latch Failure

The LCD lid latch mechanism on the C640 wears out easily and often stops working.


Gallery



Page last updated (MM/DD/YYYY): 12/14/2024
Update Reason: added more images

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