I have a "quick Fix" sheet, but there has not been much of an opportunity to try many of the items. The jets seem to be kept in excellent condition.
L/R ENG REV CONT on ground (won't erase) - Cycle stby power, then erase
IRS stays on DC - Check EEC switches normal
No HF transmit/receive - check SAT/HF transfer switch in HF
Mach/Speed Trim warning light on ground - Cycle Stab trim cutout switches.
Chimes ringing - Check F/A handsets stowed. Cycle pax ent/serv switches. If individual seat, check under armrest for cables pressing against each other and separate.
No audio with movie - Check handsets stowed/PA power.
There are more whose accuracy I have not had the opportunity to verify.