Bulletins from Mitsubishi Electric PC Division's Group Technical Services fall into a number of categories, and bulletins in each of these categories are issued within a range of serial numbers as shown below.

Spares News bulletins are produced by the Warranty Services department of the Mitsubishi Electric PC Division to inform Apricot Service Centres, etc. of all the latest news concerning spare parts.

Intermediate Product Bulletins (IPBs) are technical documents that are produced by the Group Technical Services Division on an ad hoc basis, and are distributed to dealers to provide focus on any industry-related issues. Topics range from problems encountered in the field and the solutions available to rectify them, recommendations on performance issues, notification of software patches available for third party software products, etc.

Self-training Bulletins were originated by the CD-ROM and On-line development group and dealt with any issues found regarding the portfolio of DiscoverWare titles.