Panasonic PT-56DLX25 Service Manual page 10

PT-56DLX75 / PT-61DLX75
REPLACEMENT OF LAMP
Lamp Time Reset Procedure:
Be sure to reset the Lamp time to "0" after replacing with the
new Lamp.
1. Plug in the AC Cord, and turn on the power by pressing the
POWER button.
2. Press and hold the VOLUME DOWN button on the unit and
the SPLIT key on the remote together for over 5 seconds
in power on condition.
When the reset is finished, the display as shown in Fig. 5-
1 appears and the LAMP LED goes out.
Note:
1. The unit will detect when the Lamp's end of life is
approaching and the following message will be
displayed. And the LAMP indicator light will be lit when
the Lamp's end of life is approaching.
2. Influences of frequent lighting, continuous light use for
over 24 hours, the number of times lit, the length of time
between lightings, etc. may shorten lamp life. (Because
of this, we recommend having a replacement lamp on
hand.)
WARNING:
- The lamp could rupture if dropped and lamp fragments
could cause injury.
- Because the lamp unit is hot immediately after its use,
touching it may cause burns.
Please allow the lamp to cool before handling or replacing
the lamp unit.
- If replacement of the lamp unit becomes necessary during
the operation of the Projection Display, follow the procedure
to turn off the power and wait until the lamp unit cools
completely.
Cautions for Lamp Unit Replacement:
- Do not disassemble the Lamp.
- The lamp may be hot. Be careful when handling. Wear
gloves.
- Under no circumstance should you touch the actual bulb.
At this high operating temperature the natural oil on your
finger can cause the glass to weaken where touched and
the bulb can crack or explode.
Fig. 5-1
Fig. 5-2
Lamp Replacement Procedure:
1. Press the POWER button to turn off the power.
2. Wait for about 1 minute until the cooling fan stops.
Note:
The lamp cooling fan will continue to operate for about 1
minute after the power is turned off. Do not unplug the AC
Cord from the outlet until the fan has stopped. Avoid
interrupting the power by using circuit breakers or switchable
power strips.
3. After the cooling fan has stopped, unplug the AC Cord from
the outlet.
Note:
Please wait more than one hour before replacing the lamp.
[ Forced cooling function ]
If you need to replace the lamp more urgently:
- The Projection display has a forced cooling feature.
After the POWER button is turned OFF, and during the
first minute of normal cooling fan operation, press the
VOLUME UP button on the unit and CH UP key on the
remote at the same time for more than 5 seconds. The
cooling fan operates for about 10 minutes. (LAMP LED
will flash 5 times every 5 seconds and the POWER LED
will flash red for 10 minutes.)
4. Remove the Front Cover Unit from the latches.
5. Turn the Knob to the left.
6. Pull the Lamp Cover out.
7. Loosen the Screw on the Lamp. Then, pull the Lamp.
Note:
Because the Lamp may still be hot, use caution when
handling.
8. Install the new Lamp, and tighten the Screw.
9. Install the Lamp Cover, and turn the Knob to the right.
10. Install the Front Cover Unit.
Note:
After replacing the Lamp, be sure to reset the Lamp time.
8
Knob
Lamp Cover
Fig. 5-3
Screw
Lamp
Fig. 5-4