Panasonic PT-56DLX25 Service Manual page 13

TO DISTINGUISH THE PROJECTION
LENS UNIT OR THE OPTICAL BLOCK
UNIT
The only difference between the 56 inch model and the 61 inch
model of the Optical Block Unit is the Projection Lens. To
distinguish between models, see the label on the Projection
Lens or the stamp on the Frame Plate of the Optical Blcok Unit.
GC814A
38
2005/04
Label
56"LSXA0690
61"LSXA0691
RESET USER'S MEMORY FUNCTIONS
Be sure to reset the user's memory:
- After replacing the Digital Tuner C.B.A. (Circuit Board DT)
- 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).
52
56
61
Stamp
: for 56 inch model
: for 61 inch model
BEFORE REMOVING THE OPTICAL
BLOCK UNIT FROM THE UNIT AT THE
USER'S LOCATION
When removing the Optical Block Unit, remove the Lamp from
the Optical Block Unit and keep it. Then, reinstall this Lamp into
the new Optical Block Unit.
Screw
Lamp
for lamp
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, and 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 operating.
HOT CIRCUIT
Primary circuits exist on the Ballast C.B.A. and the Power
C.B.A. (Circuit Board P).
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.
MODEL NO. IDENTIFICATION MARK
Use the Marks shown in the chart below to distinguish between
the different models included in this Service Manual.
MODEL
PT-56DLX75
PT-61DLX75
NOT USED
Note:
Refer to Item 3 of Schematic Diagram Notes of
Schematic Diagram and Circuit Board Layout Notes,
for mark "PT."
11
PT-56DLX75 / PT-61DLX75
Optical Block Unit
21
MARK
A
B
PT