Replacement Of Consumable Parts - Panasonic PT-EZ770Z Service Manual

SECTION 1 SERVICE INFORMATION
5.3.5. Optical block type check
There are 2 types of optical block, named R-type and L-type.
When replacing the optical block, check the printed marker on the flat cable of the G-LCD panel and use the same type of the
optical block. If not used the same type, you will find the color shading or wrong white balance picture on the screen.
• GL => Use A-type optical block
• GR => Use B-type optical block

5. 3. Replacement of consumable parts

[Attention] • When replacing the consumable parts, please make sure that the power cable is disconnected from the outlet.
5. 3. 1. When to replace the lamp unit
The lamp unit is a consumable component. Since its brightness gradually decreases over time, it is necessary to replace the
lamp unit regularly. The estimated duration before replacement is 3 000 hours, but the lamp may go off before reaching to
3000 hours, depending on the characteristics of the individual lamp, usage conditions, and the installation environment. It is
recommended that the Replacement Lamp Unit be prepared earlier.
The message is displayed for 30 seconds. Pressing
Over 2 800 hours any button on the control panel or remote control
within 30 seconds will clear the message.
The message remains displayed until you press any
Over 3 000 hours
button.
If you continue to use the lamp unit after 3 000 hours has elapsed, the lamp turns off automatically after approximately 10
minutes, as it may cause malfunction of the projector.
Note
• To predict when to replace the lamp, check the lamp runtime displayed at [LAMP : TOTAL] in [STATUS].
• 3 000 hours is only the target for replacement and not the warranty time.
5. 3. 2. Calculation formula of lamp runtime
The lamp runtime that is displayed in the [STATUS] is real time.
The following conversion is required to calculate the rough estimate for lamp replacement.
Lamp runtime displayed
in [LAMP : ECO]
Lamp runtime displayed
in [LAMP : TOTAL]
On screen display On screen display
REPLACE LAMP REPLACE LAMP
Formula for lamp replacement time (rough estimate)
(A x 9 + B x 8) ÷ 8
• A: Runtime when [LAMP POWER] is set to [ECO1]
• B: Runtime when [LAMP POWER] is set to [ECO2]
(C x 3 + D x 2) ÷ 3
• C: A ctual runtime when [LAMP POWER] is set to [AUTO] and [NORMAL] ( = Runtime
displayed in [LAMP : NORMAL])
• D: A ctual runtime when [LAMP POWER] is set to [ECO1] and [ECO2] ( = Runtime dis-
played in [LAMP :ECO])
The indicator lights in red even during the
standby mode.
INF-23
A-Type optical block
GL
B-Type optical block
GR
LAMP indicator LAMP indicator