Panasonic PT-EZ770T

INF-27
SECTION 1 SERVICE INFORMATION
6. Troubleshooting
6. 1. Shutdown system
This projector provides the shutdown function to set into the standby mode immediately for product safety when the projector
has the fan operation error or lamp lightning error.
LED indication status Shutdown detection Probable cause OSD warning
Not lighting or flashing
Power supply block
Fuse:Rated10A
Blown out of fuse
(with another reason)
–
Thermal fuse
a Over 113º C
Blown out of thermal fuse (with another reason)
Check usage environment
–
STANDBY/ONLED
blinks in red 1 time
Lamp cover switch
a Shutdown immediately if switch is
OFF
Lamp cover is not installed securely –
STANDBY/ONLED
blinks in red 3 times
FPGAinitializingerrororcommunication
error
Failureonsignalprocessingpart –
Main software activation error Main microprocessor writing error –
TEMP LED lights
Intake air temperature sensor
a Lower than -20ºC
Bad connection of intake air temperature sen-
sor/Sensorerror
–
Exhaust air temperature sensor
a Lower than -20ºC
Bad connection of exhaust air temperature sen-
sor/Sensorerror
–
TEMP LED blinks 3 times
(TEMP LED lights)
EachFANsensesignal
a No signal
Connector Disconnection
Fanrotationerror
–
EachFANsensesignal
a Fanrotationisslowerthan70%of
target for more than 5 seconds
Fanrotationerror –
TEMP LED blinks 2 times
(TEMP LED lights)
Intake air temperature sensor
a Higher than 48ºC
(Higher than 43ºC at highland mode)
Intake air temperature error
Filterclogging
High temperature of environment
Ventilation holes are blocked
46ºC (High-altitude 41ºC) a
TEMPWARNINGOn
44ºC (High-altitude 39ºC) a
TEMPWARNINGOff
Exhaust air temperature sensor
a Higher than 87ºC *1
Exhaust air temperature error
Ventilation holes are blocked
Exhaust fan deterioration
High altitude mode is not set at highland
89ºC a TEMPWARNINGOn
85ºC a TEMPWARNINGOff
LAMP LED lights
Lamp runtime
a More than 3000 hours
(Shutdown in 10 seconds)
Lamp runtime is over
“REPLACELAMPIN**MIN-
UTES,POWERWILLTURNOFF
ANDGOINTOSTANDBYMODE
AUTOMATICALLY.”
LAMP LED blinks 3 times
Lamp status
a Lamp is failure while the status is
other than normal operation
Lamp igniting error, lamp error, ballast error,
hot restart
–
Ballast block
Fuse:Rated5A
Intake duct clogging
Ballast block error
–
LAMP LED blinks 1 time Lamp memory communication error
Lamp is not installed or wrong lamp installed,
Connection error on the lamp memory cable
–
*1 it depends on the lamp mode , fan
mode or installed position.
The count down number 10 to 1
will be indicated in **.