Toughbook: The super rugged laptop teardown
In this post I tear down a Panasonic Toughbook CF-18 to see just what makes these computers so rugged. Keep reading for details, or scan through for pictures (you can click an image for the larger version).
The computer weighs 4lb 10.8 oz and feels as solid as a brick. The entire case and most of the internals are made from metal, which makes for a very strong laptop that feels like it can be abused. The designers were nice enough to leave the screws exposed for easy maintenance, repair, and teardowns. Gotta love it! The bottom of the laptop claims that there are dangerous voltages inside and no user-serviceable parts.
Using the laptop can be a bit difficult at first. The keyboard is small (9.2 x 4.2 inches) and can be hard to type with. It requires a good amount of force to type (somewhat more than a standard laptop), which I found pleasing. Also, the mouse is not the most responsive and has a small touch area (2 x 1.5 inches). The touchscreen is really nice for the era and helps to compensate for the mouse.
The display on the monitor was pretty good. It had even back-lighting and sufficient power.
The front panel has a metal lock that holds the lid shut. This is a two-part lock that will keep the lid closed nicely. On the left is a strong slide switch for power with a few soft buttons on the right for contrast, locks, etc..
The left side has a majority of the connectors. It has the power, USB, modem, ethernet, and the PC-CARD slots. Each port is covered by a rubber sealing cover, to help keep dust and water out. The stylus for the touchscreen slides into the bottom part of the screen.
The right side has both the battery and the hard drive. In order to open those slots you need to move the switch over and then down in two separate motions really strong. All of these covers (also on other sides) are screwed down to the metal bottom frame.
The battery is a Li-ion 7.4V 7.65Ah from Matsushita Electric in Japan.
The back of the laptop has speaker, microphone, VGA, serial (RS-232), and a lock port. In addition, there is a strap running across the back that can be used as a carrying handle.
The bottom of the laptop has a large panel that can be removed to get into the laptop, a docking port, as well as the speaker on its own plate.
I was wondering where the RAM was hidden since I thought that it would be considered a serviceable item. I found it under the speaker. After removing the speaker mounting plate there was a 256MB DDR PC-2700 333MHz RAM (with a label that says “FOR PANASONIC”). The speaker panel is sealed with 4 screws and some sticky foam. There is what looks like a thermal gap pad between the RAM chips and the metal of the speaker mount, possibly to help thermal dissipation. At first I was surprised to see standard crappy metal clips holding the RAM modules in, but then I saw a curved piece of metal on the speaker plate that coupled with the gap pad make sure the RAM module cannot move.
Finally to get into the computer’s bottom I had to open 17 screws (4 of them on the speaker module). The screws all had traces of locktite on them, making it difficult to open. My fingers were really hurting after opening the first few screws. Opening the bottom plate caused the “Warranty Void” sticker in the battery compartment between the bottom and the case to come loose.
I was not able to non-destructively open the top since I could not get the screws loose. Sorry about that.
Doing a youtube search for toughbook torture yields some nice videos.
I hope you enjoyed the pictures. If you have any field experience with the Toughbooks or have a question, please leave comments below.