Phil. We have used Reference Designators for all components to facilitate field maintainability. It has become more difficult to provide REF. DES. markings and insure field serviceability due to SMT densities. Connector marking, test points, and adjustable components are still a must. If you have to screen any markings on the board, the amount of information doesn't significantly effect the cost as compared to a something or nothing condition. Dan Botts (Link Flight Simulation) Hughes Training Inc. ______________________________ Reply Separator _________________________________ Subject: Fab/assy:reference designators Author: [log in to unmask] at CCGATE Date: 7/9/96 5:32 PM Questions on reference designators ? For those of you that have them screened or otherwise marked on you board; what do you use reference or component designators for in today's technology? I have found a few people who use them on a unloaded board to check first-piece if no overlay is present h them. Some say it is for orientation and others say it is for rework or field repair. With cost of screening reference designators on the board running between 2 and 8% of the cost, there must be a better reason Phil Hinton [log in to unmask] The mail list is provided by IPC using SmartList v3.05 To unsubscribe from this list at any time, send a message to: [log in to unmask] with <subject: unsubscribe> and no text. *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To unsubscribe from this list at any time, send a message to: * * [log in to unmask] with <subject: unsubscribe> and no text. * ***************************************************************************