Panasonic PT-44LCX65 - 44" Rear Projection TV, Service Manual

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BEFORE REMOVING THE PROJECTION
UNIT FROM THE UNIT AT THE USER’S
LOCATION
When removing the Projection Unit, remove the Lamp and the
Top Duct 3 Unit from the Projection Unit and keep them. Then,
reinstall this Lamp and the Top Duct 3 Unit into the new
Projection Unit.
Clamper
Top Duct 3 Unit
Lamp
Screw
for lamp
421
421
Projection Unit
21
MODEL NO. IDENTIFICATION MARK
Use Marks shown in the chart below to distinguish the different
models included in this Service Manual.
MODEL
PT-44LCX65
PT-52LCX65
PT-61LCX65
NOT USED
MARK
A
B
C
PT
Note:
Refer to Item 3 of Schematic Diagram Notes of
Schematic Diagram and Circuit Board Layout Notes,
for mark "PT."
HOT CIRCUIT
Primary circuit exists on the Ballast C.B.A. and the Power
C.B.A.
This circuit is identified as "HOT" on the C.B.A. and in the
Service Manual. Use extreme care to prevent accidental shock
when servicing.
DO NOT UNPLUG AC CORD DURING
COOLING OPERATION
The lamp cooling fan will continue to operate for approximately
1 minute after the power is turned off.
At the same time, the POWER LED will flash red.
Do not disconnect the AC Cord from the power outlet and do
not open any circuit breakers while the cooling fan is still
operating.
CLOGGED AIR FILTER DETECTION
When a dirty or clogged air filter is detected, the OSD display
appears for 1 minute. And then the Lamp is turned OFF.
When this OSD display appears, remove the Projection Unit
from rear, and clean the air filters gently on the Projection Unit.
AIR FILTER CLEANING
IS RECOMMANDED AT THIS
TIME. FIRST TURN THE
UNIT OFF.
PLEASE CALL FOR
SERVICE.
UNIT WILL BE TURNED
OFF AFTER 1 MINUTE.
RESET USER’S MEMORY FUNCTIONS
Be sure to reset the user’s memory:
-
After replacing the Digital Tuner C.B.A.
- If the secret code of V-chip is forgotten.
- When moving the unit to a new location.
1. Turn on the power.
2. Press and hold the VOLUME DOWN button on the unit and
the OK key on the remote for more than 3 seconds. When
reset is finished, power shuts off automatically (the user’s
memory is reset).
PT-44LCX65 / PT-52LCX65 / PT-61LCX65
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