1. Matt Baker Laura Kassovic Corey Zahner Jason Eaton
Juke Box Heroes
Matt Baker
Laura Kassovic
Corey Zahner
Jason Eaton

2. Reliability and Safety
Criticality Level: Low
Device fails to function either partially or
entirely.

3. Reliability and Safety
Parts chosen for analysis:
Power Supply (LDO Regulators)
LCD Panel/Touchscreen
Microcontroller
Ethernet

4. FMECA Failure No. Failure Mode Possible Causes Failure Effects
Method of Detection
Criticality
Remarks A1
Power Supply
Linear regulators burning out, capacitor aging.
Device fails to turn on, audio output ceases.
Device doesn’t turn on.
Low B1
LCD Display Panel
Internal component failure, “rough” use by shop patrons.
Touch panel no longer functions.
Screen doesn’t turn on. Screen is cracked or visibly damaged. C1
Microcontroller
Chip failure, bulk capacitor aging.
Device no longer performs primary functions. Audio playback, etc.
LCD reports a failure to communicate with micro. D1
Audio output stage
DAC failure, MPEG decoder failure, capacitor aging, ESD to connectors.
No audio output, noise or other unintended output.
Device operates as usual, but sound isn’t working. E1
Ethernet
Chip failure, parts damaged by ESD.
Device can’t communicate with a wired network to provide services.
Device is unable to connect to functioning network. F1
USB
Device fails to load data from known working drive.
Device comes online, but reports inability to initialize USB.