Panasonic PT-EZ57 (serv.man5) Service Manual ▷ View online
INF-15
SECTION 1 SERVICE INFORMATION
<EZ57>
4. 2. Service
4. 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+Projection lens+Lens mounter unit
- [P]-P.C.Board (Specified components are replaced)
- [BQ]-P.C.Board
- Iris unit, Shutter unit
Replaced by discrete components
Other electrical parts and mechanism parts
4. 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, wear 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.
4. 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 (SW9000) on the [A]-P.C.Board turns on.
4. 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".
* Download the service software from Projector service web site.
* The several types of adjustment data have been stored in the memory ICs listed below.
Ref.
Stored Data
IC3001
User setting data, Service adjustment data, Model No.
Serial No.
IC303
Gamma data, Color shading correction data
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 (SW9000)
INF-16
SECTION 1 SERVICE INFORMATION
<EZ57>
4.2.5. 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.
GL
GR
• GL => L-type optical block
• GR => R-type optical block
L-Type optical block
R-Type optical block
G-LCD panel
4. 3. Note on the parts replacement work
This model supports [Standard gamma/uniformity correction data] and [Projector Service Tool v.4.21]. No need to distinct use
of optical block. When replacing the optical block or A-PCB, download the [Standard gamma/uniformity correction data] get-
ting from the service web site (PASS) and take needed works referring to the work flow chart below.
Optical block replacement
Work complete.
Execute the gamma/color uniformity correction
adjustment with Projector Service Tool v.4.21. Please
refer to software instruction manual for further details.
A-PCB replacement
NG
Download proper standard gamma/color
uniformity correction data from the PASS site.
Write down standard gamma/color
uniformity correction data.
OK
Replace A-PCB
with a new one.
Write down the original
gamma/color uniformity
correction data to a new A-PCB.
Replace A-PCB
with a new one.
Enter the service mode, check the setting of PANEL TYPE.
Switch it to match the optical block type.
Is it possible to read out the
gamma/color uniformity
correction data from the
original PCB.
Check that there is no problem
on gamma/color uniformity on
the projected screen.
NO
YES
Replace optical block
with a new one.
Check the type of optical block.
Refer to the items for each procedure below.
• How to check the type of optical block
-> SECTION1 4.2.5. Optical block type check
• How to read/write the gamma/uniformity correction data
-> SECTION3 1.3. Adjusted data transfer
• How to setup the PANEL TYPE
-> SECTION3 1.4. Panel type setting
• How to adjust the gamma/uniformity
-> Projector Service Tool v.4.21. Instruction manual
INF-17
SECTION 1 SERVICE INFORMATION
<EZ57>
4. 4. Replacement of consumable parts
[Attention] • When replacing the consumable parts, please make sure that the power cable is disconnected from the outlet.
4. 4. 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.
Time for replacement
When [LAMP POWER] is constantly set to [NORMAL] without switching to other modes = 4 000 hours
When [LAMP POWER] is constantly set to [ECO] without switching to other modes = 5 000 hours
but the lamp may go off before the time above mentioned has elapsed depending on individual lamp characteristics, usage
conditions, and the installation environment. It is recommended that the Replacement lamp unit be prepared earlier.
In order to predict the lamp replacement time, please refer to the lamp runtime displayed in [STATUS] → [RUNTIME] →
[LAMP] → [NORMAL]/[ECO]. It also can be obtained by using the following formula. (The time which is displayed in [ECO] is
the converted usage time when set to [NORMAL].)
Formula for lamp replacement time (rough estimate) = “Lamp runtime of [NORMAL]” + “Lamp runtime of [ECO]” × 4/5
If the time which is obtained by the above equation 4 000 hours has elapsed, the lamp turns off automatically after approxi-
mately 10 minutes, as it will cause malfunction of the projector.
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.
Note
• The time which is obtained by the formula for lamp replacement time “4 000 hours” is a rough guideline, but is not a guaran-
tee. The lamp runtime differs depending on the setting of "LAMP POWER" menu.
INF-18
SECTION 1 SERVICE INFORMATION
<EZ57>
4. 4. 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.
• 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 that 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 for correct methods of dis-
posal.
Attention
• Panasonic takes no responsibility for any damage or malfunction of the product resulting from use of lamp units which are
not manufactured by Panasonic. Use only specified lamp units.
Note
• The model numbers of accessories and optional accessories are subject to change without prior notice.
• A Phillips screwdriver is necessary when replacing the lamp unit.
4. 4. 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.
i)
ii)
Lamp cover
Lamp cover
fixing screw
Fig. 1
Lamp unit fix-
ing screws
Handles
Lamp unit
Fig. 2
1) Turn off the power of the projector and set the <MAIN POWER> switch to <OFF> 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 turn the lamp cover fixing screw (x1) counterclockwise until it turns freely, and slide and pull
up the lamp cover slowly in the direction of the arrow to remove it.
• Opening the lamp cover quickly may result in falling.
3) Remove the lamp unit. (Fig. 2)
• Use a Phillips screwdriver to turn the lamp unit fixing screws (x3) counterclockwise until they turn freely, and remove the
lamp unit.
• Hold the handles of the lamp unit and remove it straight.
4) Push in the new lamp unit while paying attention to the insertion position.
• 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.
5) Use a Phillips screwdriver to firmly tighten the lamp unit fixing screws (x3).
• Make sure to attach the lamp unit securely.
Click on the first or last page to see other PT-EZ57 (serv.man5) service manuals if exist.