Panasonic PT-DZ21K2 / PT-DS20K2 / PT-DW17K2 / PT-DZ16K2 (serv.man2) Service Manual ▷ View online
SECTION 1 SERVICE INFORMATION
<DZ21K2/DS20K2/DW17K2/DZ16K2>
4. 1. 3. DLP chips
1. The DLP chips are precision-made. Note that in rare cases, pixels of high precision could be missing or always lit.
1.
Such a phenomenon does not indicate malfunction.
2. Directing a high-power laser beam onto the projection lens surface can damage the DLP chips.
4. 1. 4. Lithium battery
1. The lithium battery is used for the internal clock in the A-P.C.Board. So when it consumed it must be replaced.
2. After replacing the lithium battery, set the time zone, date, and time of the built-in clock of the projector.
・ [PROJECTOR SETUP] menu ⇒ [DATE AND TIME]
[Note]
・ Use only specified lithium battery.
・ Used battery must be scrapped according to the instruction.
・ Used battery must be scrapped according to the instruction.
4. 1. 5. Control device password
f To revert to the factory default password (AAAA), perform the following operations while the screen asking for a control
device password input is displayed.
1) Press the <AUTO SETUP> button on the remote control for at least two seconds.
2) Press s for at least two seconds.
4. 1. 6. Security password
f Initial password : Press awsqawsq in order, and press the <ENTER> button.
4. 2. Service
4. 2. 1. Supporting Methods
The basic service policy is shown below.
・ PF-P.C.Board (Specified components are replaced)
Lens mount
・ PＢ-P.C.Board
Rod
・ B-P.C.Board
Iris unit
・ ＷＬ-P.C.Board
Mechanical shutter
・
・
4. 2. 2. Repair
1. Since this projector is very strong light output, when checking the projection screen, please UV protection glasses and
1.
select to "single" lamp mode. Please pay particular attention if the projection distance is short.
2. When removing a top cover and carrying out check or adjustment, a strong light has leakage from the optical block.
2.
Please take the use of UV protection glasses and means of the shading.
3. While the cooling fan is working, do not pull the plug out nor disconnect the breaker.
* This model is not equipped with a "Direct Power Off" function.
* When the monitor of power supply lamp turns red and the fan stops, disconnecting can be done.
4. Before repair, make sure to turn off the main power and disconnect the power plug from the power outlet.
5. When replacing the print board the internal electrical parts can be broken by the static electricity of clothes or human body.
* Use an antistatic wrist strap or wear the anti-static electricity gloves and take care in static electricity.
6. Please check the gradation (10step or the gray scale) test pattern and moving image after the repair is completed.
6.
And the check that there is no abnormality in the self-check screen.
* Since the error information of the self-check screen are remain preserved, please be sure to clear.
7. For the user setup information remains in the projector, handling and safekeeping carefully.
・
DMD Block
Other electrical parts and mechanism parts
Replaced by discrete components
Lithium battery : CR2032
Repair contents
Applied parts
Block replacement
P.C.Board replacement
Repair at the factory
INF - 16
SECTION 1 SERVICE INFORMATION
<DZ21K2/DS20K2/DW17K2/DZ16K2>
4. 2. 3. Interlock detection
f The interlock detects whether the lamp cover is mounted securely.
Power will not turn on, unless the connector R31 in a lamp cover is inserted in the main body side.
4. 2. 4. Replacement of A-P.C. board
1. Transfer the adjustment and setting data of the original A-P.C.Board to the new A-P.C.Board using the service
1.
software and a personal computer. Refer to [SECTION 3 Adjustments] for the procedure.
2. If you cannot transfer the data that uses the adjustment software, remove IC3711 from the original board and
2.
mount them on the new board.
3. When A-P.C.Board is replaced, the MAC address of wired LAN will be changed. Explain it to the customers in advance.
4. 3. User maintenance/replacement parts
[Note]
・ Set the MAIN POWER switch to "OFF" and disconnect the power plug from the power outlet.
・ Do not replace the lamp unit when it is high temperature. (Wait at least one hour after use.)
・ Do not replace the lamp unit when it is high temperature. (Wait at least one hour after use.)
4. 3. 1. When to replace the lamp unit
1. The estimated duration before replacement is 3 000 hours, but the lamp may go off before reaching 3 000 hours,
1.
depending on the characteristics of the individual lamp, usage conditions, and the installation environment.
1.
It is recommended that the replacement lamp unit be prepared earlier.
2. To predict when to replace the lamp, check the lamp runtime displayed in [LAMP1] to [LAMP4] of [STATUS].
3. If you continue to use the lamp unit after 3 000 hours has elapsed, the lamp turns off automatically after approximately
3.
10 minutes, as it may cause malfunction of the projector.
3.
The projector will go into standby mode in approximately 10 minutes after the runtime of all four lamp units exceeds
3.
3 000 hours.
[Note]
・ The runtime of 3 000 hours is a rough estimate and is not guaranteed.
・ The estimated duration before replacing the dedicated lamp unit (portrait) is 1 000 hours. The on-screen message
・ The estimated duration before replacing the dedicated lamp unit (portrait) is 1 000 hours. The on-screen message
for replacing the lamp appears after 800 hours.
Rear cover
R3-P.C.Board
(R31)
On-screen display
REPLACE LAMP
Lamp indicator
Over 2 800 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.
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. (Only the corresponding lamp lights on.)
mode. (Only the corresponding lamp lights on.)
Over 3 000 hours
The message remains displayed until you press any
button.
button.
INF - 17
SECTION 1 SERVICE INFORMATION
<DZ21K2/DS20K2/DW17K2/DZ16K2>
4. 3. 2. Notes on the replacement of the lamp unit
1. Since the luminous lamp is made of glass, it may burst if dropped or hit with a hard object. Handle with care.
2. When replacing the lamp unit, be sure to hold it by the handle because its surface is pointed and its shape is protruded.
3. The lamp may rapture. Replace the lamp unit carefully so that the glass fragments of the lamp do not scatter.
3.
While attaching the projector to the ceiling, do not work right under the lamp unit or do not conduct work while your face
3.
is near the lamp unit.
4. Do not disassemble or modify the lamp unit.
5. Do not remove or loosen the screws other than specified ones when replacing the lamp unit.
6. Use the same type of lamp unit for all four lamps.
[Note]
・ When you replace the lamp unit with new one, the projector resets the runtime of the lamp unit automatically.
・ You will feel a jam when removing or attaching the lamp case, but that is because of the stopper for drop prevention
・ You will feel a jam when removing or attaching the lamp case, but that is because of the stopper for drop prevention
and not a problem.
4. 3. 3. Replacement procedure for lamp unit
1. 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. Loosen the lamp unit cover fixing screw (one screw) until it turns freely, and then open the lamp unit cover
in the direction of the arrow.
Opening the lamp unit cover quickly may result in damage to the cover.
3. Loosen the lamp case fixing screws (two screws each) counterclockwise until they turn freely, and then hold the
3.
handles of the lamp case and remove it straight.
・ Do not remove the black screws other than the lamp case fixing screws.
・ If you loosen the lamp case fixing screws with the projector installed upward in the vertical direction, the lamp
・ If you loosen the lamp case fixing screws with the projector installed upward in the vertical direction, the lamp
case may drop off on its weight. Take extra care by holding the lamp case handle when loosening the lamp
case fixing screws.
Rear cover
Rear cover fixing screw
①Open a little
②Slide it in the direction of the arrow, and then pull it out backward to remove.
②Slide it in the direction of the arrow, and then pull it out backward to remove.
Lamp case L
Lamp case R
Lamp unit 1
Lamp unit 2
Lamp unit 3
Lamp unit 4
Lamp case fixing screws
Lamp case handles
Lamp case L
Lamp case R
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.
The high temperature inside the cover will cause burns.
WARNING
When replacing the lamp unit with the projector installed upward in
the vertical direction, make sure to support the lamp unit cover with
your hand while loosening the lamp unit cover fixing screw.
The lamp unit cover may open on its weight and may drop off, causing a
serious accident or injury.
the vertical direction, make sure to support the lamp unit cover with
your hand while loosening the lamp unit cover fixing screw.
The lamp unit cover may open on its weight and may drop off, causing a
serious accident or injury.
①
②
Lamp case handles
INF - 18
SECTION 1 SERVICE INFORMATION
<DZ21K2/DS20K2/DW17K2/DZ16K2>
4. Loosen the lamp unit fixing screws (two screws each) until they turns freely, and then pull out the lamp unit from
4.
the lamp case.
・ Hold the handles of the lamp unit and remove it straight.
・ Do not remove screws other than the lamp unit fixing screws.
・ Do not remove screws other than the lamp unit fixing screws.
5. Attach the new lamp unit and firmly tighten the lamp unit fixing screws (x2 each).
・ Slowly insert a new lamp unit into the lamp case.
Attach the lamp unit so that the guide pins fit into the guide holes of the lamp unit.
・ If you are having difficulty attaching the lamp unit, remove it first and then push it in again slowly.
Pushing it in quickly or forcibly may break the connector.
6. Install the Lamp case and reverse the disassembly procedures, install the rear cover.
・ Slowly insert the lamp case into the projector along the grooves for the guide to attach the lamp case, then firmly
tighten the lamp case fixing screws (x2).
・ If the projector is installed upward in the vertical direction, the lamp case may drop off on its weight when fixing it.
Take extra care by holding the lamp case handle when tightening the lamp case fixing screws.
・ If you are having difficulty attaching the lamp case, remove it first and then push it in again slowly.
Pushing it in quickly or forcibly may break the connector.
4. 3. 4. Air filter maintenance
1. Maintenance cycle of the filter is 12000 hours, but it varies greatly depending on use environment.
2. The air filter is clogged with dust, causing the filter replacement message to appear on the screen and the
2. The air filter is clogged with dust, causing the filter replacement message to appear on the screen and the
2.
<FILTER> indicator to light in red. In this case perform maintenance.
3. The proceeds of the air filter clogging, becomes hot of projector inside, and <TEMP> indicator is lit, power shut down.
Then <FILTER> indicator remains red , <TEMP> indicator will flash (twice) red.
4. Replace the air filter unit with the new optional Replacement filter unit if it is damaged or if the dirt does not
4.
come off even after washing.
4. 3. 5. Cleaning procedure for Air filter unit
1. Make sure to turn off the power before performing maintenance on the air filter unit.
2. Loosen the filter cover fixing screw (one screw) until it turns freely, and then remove the filter cover in the direction
2.
of the arrow.
・ Loosen the air filter cover fixing screw while putting your hand on.
Lamp unit
Lamp unit
Lamp unit fixing screws
Lamp case handle
Air filter cover
Air filter cover fixing screw
Guide pin and guide hole
Lamp unit handle
INF - 19
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