Toshiba PROA660 Colors of Screw Shanks, Symbols of Screws on the Laptop Body, Symbol examples

4 Replacement Procedures

Colors of Screw Shanks

For easy identification of the correct screws, the screw shanks are colored according to their lengths, as follows:

￿	Screws of an odd-numbered length	Blue
￿	Screws of a special length	Black

Screws of a special length are those of a length having decimal places (i.e. 16mm).

Symbols of Screws on the Laptop Body

For easy maintenance, the screw types are shown on the laptop body as symbols. A symbol consists of a letter representing the screw type and a numeral representing the screw length.

￿ Screw type	Letter
￿ Bind screw	B	(stands for bind)
￿ Flat-head screw	F	(stands for flat-head)
￿ Super flat-head screw	S	(stands for super flat-head)
￿ Tapping screw	T	(stands for tapping)
￿ Other screws	U	(stands for unique-pan head screws, studs, etc.)

Symbol examples
￿ 6 mm bind screw		B6
￿	12 mm bind screw	B12
￿	5 mm stud	U5

(The numeral represents the rounded length of the threaded portion regardless of the entire stud length.)

Satellite A660/ProA660 Series Maintenance Manual 4-8