Philips LC7.2E Service Manual page 28

EN 28 5. LC7.2E LA
Power Down INT:
AC OFF or Transient INT
Notes:
1. Power Down INT will be based on fall edge triggering
2. +3V3STBY will stay for 15ms, software must perform
WriteProtect for NVM within 15ms.
DC_PROT INT
Service Modes, Error Codes, and Fault Finding
Figure 5-18 Power Down & DC_PROT flowchart
Start
Avoid false trigger
Poll the Power Down
No
INT for 5 times
Yes
End
Mute Audio & VIdeo
WriteProtect for NVM
STANDBYn = LOW
Wait 5000 ms
Re-start: Start up
End
Start
Avoid false trigger
is DC_PROT = LOW
No
for 3 sec?
Yes
End
Mute Audio & VIdeo
Error 1
Log Error Code
[Protection]
WriteProtect for NVM
STANDBYn = LOW
End
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