Service Modes, Error Codes, and Fault Finding
5.
Figure 5-9 Stand-by / Tact Switch Stand-by flowchart
I_17760_04
8
.ep
s
0
3
0
3
0
8
S
TANDBY / TACT
S
WITCH
S
TANDBY
S
t
a
rt
M
u
te A
u
dio
WP for NVM
S
TANDBY =
HIGH
S
oftw
a
re
S
h
u
tdown:
BL_ON_OFF = LOW
W
a
it
3
00m
s
S
witch OFF LVD
S
W
a
it 20m
s
LCD_PWR_ON = LOW
End
LED = NO LED
for
S
t
a
nd
b
y
s
oft mode
S
t
a
nd
b
y
us
ing
“power key
”
LED =
RED
No
Ye
s
For DVB
S
et
s
only (
S
emi
s
t
a
nd
b
y)
S
DI PDP => CTRL_DI
S
P1 = HIGH
FHP PDP => CTRL_DI
S
P4 = LOW
Off Air Downlo
a
ding/ Recording Mode
IBOZ
s
end
s
h
u
t down comm
a
nd
BL_ADJ
(PWM d
u
ty cycle 100
%
)
En
ab
le A
u
dio M
u
te
Port A
ss
ignment in
S
TANDBY
3
00m
s
20m
s
Tot
a
l =
3
60m
s
40m
s
W
a
it for
3
000m
s
S
et
s
go to
s
t
a
nd
b
y here
Blocking for the next
s
t
a
rt
u
p to en
su
re
power
su
pply di
s
c
a
rd properly.
Di
sab
le Power Down INT &
DC_PROT_INT
W
a
it for
3
000m
s
Except power t
a
ct
s
witch
BL_ADJ = LOW
(PWM d
u
ty cycle 0
%
)
Di
sab
le A
u
dio M
u
te
(ANTI_PLOP=LOW)
(MUTEn =HIGH)
(ANTI_PLOP =HIGH)
(MUTEn = LOW)
(ANTI_PLOP =HIGH)
(MUTEn = LOW)
S
end
S
t
a
nd
b
y comm
a
nd to Digit
a
l Mod
u
le
W
a
it for 2
s
Ack received from Digit
a
l Mod
u
le or > 2
s
