Panasonic PT-VX42Z / PT-VX42ZD Service Manual ▷ View online
INF-19
SECTION 1 SERVICE INFORMATION
5. 2. Service
5. 2. 1. Supporting Methods
The basic service policy is shown below.
Repair contents
Applied parts
Block replacement
P.C.Board replacement
- Lighting block (* Specified components are replaced)
- Optical block
- [P]-P.C.Board (Specified components are replaced)
- [BQ]-P.C.Board
- Iris unit
Replaced by discrete components
Other electrical parts and mechanism parts
5. 2. 2. Repair
1. Since very strong light is leakage from the surroundings of optical block, when checking or adjusting the projector with top
cabinet removal, ware the UV protection glasses to protect the UV light.
2. Before repairing, make sure to turn off the main power and disconnect the power plug from the power outlet.
* When replacing the print board, the internal electrical parts can be broken by the static electricity of clothes or human
body. Please take care in static electricity, use an antistatic wrist strap or wear the anti-static electricity gloves.
3. After repairing, please check the gradation (10step or the gray scale) test pattern or moving image.
Also, please check that it is normal on a self check screen.
5. 2. 3. Interlock detection
The lamp cover switch detects whether the lamp cover is mounted securely.
When the lamp cover is mounted securely, the interlock switch (K8S) on the [A]-P.C.Board turns on.
5. 2. 4. Replacement of A-P.C. board
1. When the replacement of [A]-P.C.Board (assembly) is needed, back up the memory information such as adjustment data
from the old board to PC with the service software. Then transfer this data to the new [A]-P.C.Board.
For more information refer to the SECTION 3 "Adjustment".
* Down load the service software from Projector service web site.
2. When [A]-P.C.Board is replaced, the MAC address of wired LAN and wireless LAN will be changed. Explain it to the cus-
tomers in advance.
Interlock switch (K8S)
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SECTION 1 SERVICE INFORMATION
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 4 000 hours, but the lamp may go off before reaching to
4000 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.
On screen display
REPLACE LAMP
LAMP indicator
On screen display
REPLACE LAMP
LAMP indicator
Over 3 800 hours
The message is displayed for 30 seconds. Pressing
any button on the control panel or remote control
within 30 seconds will clear the message.
The indicator lights in red even during the
standby mode.
Over 4 000 hours The message remains displayed until you press any
button.
If you continue to use the lamp unit after 4 000 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].
• 4 000 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.
Formula for lamp replacement time (rough estimate)
A x 1 + B x 0.8 + C x 2/3
• A : Runtime which is displayed in [STATUS] - [RUNTIME] - [NORMAL]
• B : Runtime which is displayed in [STATUS] - [RUNTIME] - [ECO1]
• C : Runtime which is displayed in [STATUS] - [RUNTIME] - [ECO2]
5.2.5. 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
GR
• GL => Use L-type optical block
• GR => Use R-type optical block
L-Type optical block
R-Type optical block
G-LCD panel
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SECTION 1 SERVICE INFORMATION
5. 3. 3. Notes on the replacement of the lamp unit
Warning
Replace the lamp unit after the lamp has cooled (after waiting at least one hour).
The high temperature inside the cover will cause burns.
• A Phillips screwdriver is necessary when replacing the lamp unit.
• Since the luminous lamp is made of glass, it may burst if dropped or hit with a hard object. Handle with care.
• Do not disassemble or modify the lamp unit.
• When replacing the lamp unit, be sure to hold it by the handle because its surface is pointed and its shape is protruded.
• The lamp may rapture. Replace the lamp unit carefully so the glass fragments of the lamp do not scatter. While attaching the
projector to the ceiling, do not work right under the lamp unit or do not conduct work while your face is near the lamp unit.
• The lamp contains mercury. When disposing of used lamp units, contact your local authorities or dealer for correct methods
of disposal.
5. 3. 4. Replacement procedure for lamp unit
Attention
• While attaching the projector to the ceiling, do not work right under
the lamp unit or do not conduct work while your face is near the
lamp unit.
• Do not remove or loosen the screws other than specified ones
when replacing the lamp unit.
• Make sure to attach the lamp unit and the lamp cover securely.
• If the lamp unit is not installed properly, remove it and then push it
in slowly. Pushing it in quickly or forcibly may break the connector.
1) Turn off the projector and disconnect the power plug from
the power outlet.
• Wait at least one hour and check if the lamp unit has cooled
down.
2) Remove the lamp cover. (Fig. 1)
• Use a Phillips screwdriver to loosen the lamp cover fixing screw
(×1) and remove the lamp cover.
• Remove the lamp cover by pulling it slowly toward the direction
of the arrow.
3) Remove the lamp unit. (Fig. 2)
• Use a Phillips screwdriver to loosen the three lamp unit fixing
screws (×3) until the screws turn freely. Hold the used lamp unit
by its handles, and pull it gently from the projector.
4) Attach the unused lamp unit.
• Insert the new lamp unit in correct direction. Tighten the three
lamp unit fixing screws (×3) securely with a Phillips screwdriver.
5) Attach the lamp cover.
• Attach the lamp cover, and tighten the lamp cover fixing screw
(×1) securely with a Phillips screwdriver.
• Attach the lamp cover by pushing it slowly opposite the direction
of the arrow.
Note
• When you replace the lamp unit with new one, the projector resets
the runtime of the lamp unit automatically
Lamp cover
Lamp cover
fixing screw
Fig. 1
Lamp unit fix-
ing screws
Handles
Fig. 2
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SECTION 1 SERVICE INFORMATION
5. 3. 5. Air filter maintenance
Perform maintenance of the air filter in the following case.
• The air filter is clogged with dust, causing the filter replacement message to appear on the screen.
Attention
• Make sure to turn off the power before performing maintenance on the air filter unit.
• Make sure that the projector is stable, and perform the maintenance in a safe place where the unit will not be damaged even
if you drop the air filter unit.
5. 3. 6. Replacement procedure for air filter unit
1) Remove the air filter cover. (Fig. 1)
• Open the air filter cover in the direction of the arrow and remove it.
2) Remove the air filter unit. (Fig.2)
• Hold the tab of the air filter unit and pull out in the direction of the arrow.
• After removing the air filter unit, remove foreign objects and dust from the air filter compartment and the projector’s air
intake port if there are any.
3) Attach the unused air filter unit to the projector (Fig.3)
• Hold the air filter unit that the tab is in up-left side in the figure, put the right side in the figure first, and press the tab side
until make a click sound.
• Do not press any other part of the air filter unit except the frame during installation
4) Install the air filter cover.
• Perform Step 1) in “Removing the air filter unit” in the reverse order
• Make sure that the air filter cover is closed tightly.
Air filter cover
Fig. 1
Tab
Air filter unit
Fig. 2
Tab
Air filter unit
Fig. 3
Attention
• Turn off the power before you replace the air filter unit.
• When attaching the air filter unit, make sure that the projector is stable, and work in an environment that is safe, even in the
event of the air filter unit dropping.
• Make sure that the air filter unit is properly attached before using the projector. If it is not attached, the projector will suck in
dirt and dust causing a malfunction.
• Do not put anything into the air vents. Doing so may result in malfunction of the projector.
• The air filter unit to be replaced should be an unused product.
• After replacing the air filter, reset the filter counter. Otherwise, “FILTER COUNTER has reached the set time.” will appear on
screen.
Note
• The replacement cycle of the air filter unit varies greatly depending on the usage environment.
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