functional schematics for displays

[skywmn]

Does anyone can give us an advice?
We have to prepare some technical documentation for displays system. What's the most useful info for mechanical's using? It should be functional schematics - it should contain pin-to-pin connections but which functions should be shown? what do they wonna see there and what's useless there??? It's really philosophically. does anyone have an experience of using FS for this system? please, help if you can. thanks

 

[BeenThereDoneThat]

Does anyone can give us an advice?
We have to prepare some technical documentation for displays system. What's the most useful info for mechanical's using? It should be functional schematics - it should contain pin-to-pin connections but which functions should be shown? what do they wonna see there and what's useless there??? It's really philosophically. does anyone have an experience of using FS for this system? please, help if you can. thanks

In order to read Schematics, one has to assume that a problem has been trouble shot prior to accomplishing a repair. Management say: throw more parts at the problem, sooner or later it will go away.
Sounds more true to life.

 

[D-Jet]

A functional schematic for a display system does not need to have pin to pin interfaces, while some newer Boeing aircraft do. For example on an MD-83, the EFIS system schematic is a block diagram showing the relation between the primary flight display, IRS, Symbol Generator, DFGC, primary navigation display, DME, VOR/LOC receiver, and radio altimeter. A good functional schematic for a display system should contain all the major elements of the system including where the signals are derived from. References to pin numbers are helpful, but those can be contained separately in Wiring Diagram Manuals. Is this helpful or is more info needed?

 

[woody2007]

Does anyone can give us an advice?
We have to prepare some technical documentation for displays system. What's the most useful info for mechanical's using? It should be functional schematics - it should contain pin-to-pin connections but which functions should be shown? what do they wonna see there and what's useless there??? It's really philosophically. does anyone have an experience of using FS for this system? please, help if you can. thanks

I have worked specialized in Avionics (RE&I) with all the related airframe, power plant, and structural general AMT work for over 30 years, 10+ years General and 20+ Heavies (747, L1011, DC9, MD80's, 757, 767, SAAB340B, etc., in mostly major checks and major modification in Hangar Maintenance, 5-year’s component bench in general and 5-year’s in heavy a/f and P/P electric and electronics during those periods. Electronics education in 3 hours a day for two years in High school, Army, and BSEET and some time as customer service rep KING Bendix (boxes), Engineering at Electronic Research Company and Chief Inspector at a Repair Station (airframe and boxes). Previous info was to order to clarify my qualifications on the subject of System Schematics.
The Philosophy is very simple you need to have an engineering liaison that understands the engineering and understands working in a 130-degree E&E compartment under time constraints and that a 12 inch wire on a schematic may go through bulkheads and almost impossible to reach connectors. If you want a procedural philosophy then a system schematic needs to include all connections in the “Fault Isolation Manualâ€￾ and needs to include updated special case situation schematics, found in a product rollout and customer feedback on misdiagnosed problems in the field. A BOON for Airlines with ETOPS or Dogcatcher programs for boxes and airframes due to FAA oversight of misdiagnosed and non-repaired repeating faults signed off with repeated failures to troubleshoot the real problem ,philosophically, is a system schematic can act as a conduit between engineering and production to the AMT’s in a way that takes the how and why and turns it into a real world tool that lives and evolves turning feedback to the gold that makes companies want your system because the AMT’s have the tools in your system schematics to make it a reliable and easy to repair system. In 30 years of experience most install and unable to repair failures for modifications is that, those that make the systems cannot properly communicate with those that install and repair the systems.
Hope it goes well