Panasonic PT-52LCX66-K, Руководство по обслуживанию, Страница: 32 / 223

LAMP DOES NOT LIGHT UP
Plug in the AC Cord.
Note:
1. Before doing this troubleshooting, confirm that all
connector cables in the unit are connected to the
connectors correctly.
2. When doing troubleshooting over again, be sure to
turn the power off and unplug the AC Cord.
3. If the same error indication occurs repeatedly,
after several attempts, proceed to the next step.
Is there a snap sound of the Relay
turning ON?
(Relay: RL1902/RL1903 on the Power
P.C.B.)
YES
NO
YES
NO
Does the Power LED (D6801) on the
Power Switch P.C.B. flash green?
The Power P.C.B. is defective.
(Refer to "CHECKING THE POWER P.C.B.")
Turn the power ON.
Pin7 of CN1514
Power PCB Mount Metal (GND)
YES NO
If Lamp is OK
Error 2)3)4)5)6)7)9)10)11)12)13)
occurs continuously.
(Refer to "ERROR INDICATION
INFORMATION")
Refer to "How to solve problem
indicated by the Error Indication
of LED."
Perform troubleshooting.
The Power LED (D6801) goes off
or flashes green.
The Main P.C.B. is defective.
(Refer to "CHECKING THE
MAIN P.C.B.")
Error 1) occurs.
The Power P.C.B. is defective.
(Refer to "CHECKING THE
POWER P.C.B.")
Unplug the AC Cord, and open
the Power P.C.B. by removing the
screws.
Turn the power ON and check if there is a voltage of approx. +9V at Pin 7 of
CN1514 on the Power P.C.B. for a moment just after the power is turned on.
Refer to the following figure.
Error 8) occurs.
Wait until the Lamp is cooled off
and try to turn the power back on.
If same error LED indication
continues, remove the Lamp
and visually inspect it.
If it is cracked, it must be replaced.
The Power P.C.B. is defective.
(Refer to "CHECKING THE
(BALLAST CIRCUIT")
<With Power P.C.B./Power PCB Mount Metal opened>
PT-52LCX66-K / PT-56LCX16-K / PT-61LCX66-K
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