Philips LC7.5E - Page 27

Service Modes, Error Codes, and Fault Finding
EN 27LC7.5E LA 5.
Figure 5-18 Power Down & DC_PROT flowchart
Start
WP for NVM
Mute Audio & VIdeo
Power Down INT:
AC OFF or Transient INT
DC_PROT INT
STANDBYn = LOW
Wait 5000 ms
Re-start: Start up
End
No
Notes:
1. Power Down INT will based on fall edge triggering
2. +3V3STBY will stay for 15ms, software must perform WP for NVM within 15ms.
Poll the Power Down
INT for 5 times
End
Avoid false trigger
Start
Mute Audio & VIdeo
No
End
Avoid false trigger
is DC_PROT = LOW
for 3 sec?
Log Error Code
STANDBYn = LOW
WP for NVM
Error 1
[Protection]
End
Yes
Yes
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