Pioneer f-502 Service Manual page 116

LED Pattern
State
AC OFF or Main
B
power switch OFF R
OG
Standby power
B
management
R
OG
Power ON
B
(Screen ON)
R
OG
B Once
Power-down
R 500ms
OG
B 500ms
Shutdown
R Once
OG
No digital adjustment
B 200ms
data copied for
R
backup
OG
In the process of
B 100ms
rewriting the program
R 100ms
of the microcomputer
OG
During factory
B
operation
R
OG
B
Trap switch
R
OG
During DTV Module
B 100ms
software downloading
R 100ms
OG
Downloading of DTV
B
Module software is
R 500ms
finished normally.
OG
Downloading of DTV
B
Module software is
R
abnormally finished.
OG 500ms
B
Sleep timer
R
OG
PDP4280HD, PDP5080HD
LED Pattern
Twice n times
Twice n times
500ms 500ms
500ms 500ms
116
POWER ON STANDBY SLEEP
2.5s Once
2.5s Once
500ms 500ms
500ms 500ms
Remarks
The LEDs flash only while the panel is
turned on.