Service Modes, Error Codes, and Fault Finding
EN 24
LC7.2E LB
5.
Figure 5-17 Power Down & DC_PROT flowchart
S
t
a
rt
WriteProtect for NVM
M
u
te A
u
dio & VIdeo
Power Down INT:
AC OFF or Tr
a
n
s
ient INT
DC_PROT INT
S
TANDBYn = LOW
W
a
it 5000 m
s
Re-
s
t
a
rt:
S
t
a
rt
u
p
End
No
Note
s
:
1. Power Down INT will
b
e
bas
ed on f
a
ll edge triggering
2. +
3
V
3S
TBY will
s
t
a
y for 15m
s
,
s
oftw
a
re m
us
t perform
WriteProtect for NVM within 15m
s
.
Poll the Power Down
INT for 5 time
s
End
Avoid f
a
l
s
e trigger
S
t
a
rt
M
u
te A
u
dio & VIdeo
No
End
Avoid f
a
l
s
e trigger
i
s
DC_PROT = LOW
for
3
s
ec?
Log Error Code
S
TANDBYn = LOW
WriteProtect for NVM
Error 1
[Protection]
End
Ye
s
Ye
s
G_16
8
60_072.ep
s
220207
