手册

手册
System Board: Dell Latitude C840 Service Manual

Back to Contents Page

System Board

Dell™ Latitude™ C840 Service Manual


NOTICE: Disconnect the computer and attached devices from electrical outlets and remove any installed batteries.
NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by periodically touching unpainted metal on the computer.

1

M2.5 x 4-mm captive-washer screws (3)

2

system board

3

network connector

4

modem connector

5

network cable cover

6

M2.5 x 20-mm screw

The BIOS chip on the system board contains the service tag sequence, which is also visible on a bar code label on the bottom of the computer.

The replacement kit for the system board includes a floppy disk or CD that provides a utility for transferring the service tag sequence to the replacement system board.

NOTICE: If you received a flash BIOS update floppy disk or CD with the replacement microprocessor, you must update the BIOS after replacing the microprocessor module.

Removing the System Board

  1. Follow the instructions in "Preparing to Work Inside the Computer."

  2. Remove the hard drive and the fixed optical drive.

  3. Remove any installed Mini PCI Cards.

  4. If migrating the memory, remove all installed memory modules.

  5. Remove (if migrating) or disconnect the modem daughter card.

  6. Remove the keyboard.

  7. Remove the hinge cover.

  8. Remove the display assembly.

  9. Remove the palm rest.

  10. Remove the video graphics board.

  11. Remove the microprocessor thermal-cooling assembly.

  12. If migrating the microprocessor, remove the microprocessor module.

  13. Separate the network cable from the system board:

    1. First remove the network cable cover: Insert a narrow plastic scribe or small screwdriver just barely into the slot that faces the back of the computer (do not insert the scribe far enough to catch on the wires inside), press down on the cover lightly to secure it, and pry upward to release the cover.

1

network cable cover

    1. Disconnect the network cable. Do not pull on the cable wires. Instead, pry up the outer corner of the upper connector until the connectors start to separate.

1

outer corner of upper connector

2

network cable

  1. Remove the three M2.5 x 4-mm captive-washer screws from the system board.

  2. Remove the M2.5 x 20-mm screw from the center of the LED board.

  3. Lift the front of the system board and work it out of the back panel.

If necessary to help release the system board, pull outward on the top of the plastic near the back left corner of the bottom case (see the small arrow at the far left in the following figure).

System Board


Back to Contents Page

 

 

 

笔记本电脑 | 台式机 | 商用 笔记本电脑 | 商用台式电脑 | 工作站| 服务器 | 存储器 | 显示器 | 打印机 | 电子产品和 附件
版权 1999-2009 戴尔公司 (Dell Inc.)   仅适用于中国客户的内容设计
版权所有。 电池召回 | 关于Dell | 使用条款 | 条款和条件 | 您未解决的问题 | 隐私政策 | 站点地图 | 反馈

*戴尔的常规条款和条件在此适用,并可网上获得或致函索取。戴尔会尽力排查报价错误或其他错误,但由于我们的疏漏,某些错误仍可能发生。戴尔有权利不接受任何包含错误信息的订单。

页面上所出现的产品图片仅供参考

snWEB3