Panasonic PT-RZ21KE / PT-RS20K Service Manual ▷ View online
3
PREFACE
< RZ21K / RS20K >
There are special components used in this equipment which are important for safety. These parts are marked by 7 in the schematic dia-
gram, circuit board diagrams, exploded views and replacement parts list. It is essential that these critical parts should be replaced with
manufacturer’s specified parts to prevent shock, fire, or other hazards. Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
Caution:
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environ-
ment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruc-
tion manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the interference at his own expense.
FCC Warning:
To assure continued compliance, follow the attached installation instructions. This includes using the provided power cord and shielded inter-
face cables when connecting to computer or peripheral devices. Also, any unauthorized changes or modifications to this equipment could void
the user’s authority to operate this device.
Cautions when transporting
f
Transport the projector with two or more people. Failure to do so may drop the projector, which may result in damage or
deformation of the projector, or injury.
f
When transporting the projector, hold it securely by its bottom and avoid excessive vibration and impact. Failure to do so
may cause a failure due to the damaged internal components.
f
When transporting the projector, attach the supplied lens hole cover.
f
Do not transport the projector with the adjustable feet extended. Doing so may damage the adjustable feet.
Cautions when installing
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Do not set up the projector outdoors.
The projector is designed for indoor use only.
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Do not set up the projector in the following locations.
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Places where vibration and impacts occur such as in a car or vehicle: Doing so may cause damage to internal compo-
nents or malfunction.
f
Location close to sea or where corrosive gas may occur: The projector may fall due to corrosion. Also, failure to do so
may shorten the life of the components and result in malfunctions.
f
Near the exhaust of an air conditioner: Depending on the conditions of use, the screen may fluctuate in rare cases due
to the heated air from the air exhaust port or the hot or cooled air. Make sure that the exhaust from the projector or
other equipment, or the air from the air conditioner does not blow toward the front of the projector.
f
Places with sharp temperature fluctuations such as near lights (studio lamps): Doing so may shorten the life of the light
source, or result in deformation of the projector due to heat, which may cause malfunctions.
Follow the operating environment temperature of the projector.
f
Near high-voltage power lines or near motors: Doing so may interfere with the operation of the projector.
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Places where there is high-power laser equipment: Directing a laser beam onto the projection lens surface causes
damage to the DLP chips.
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The projector may not work properly due to strong radio wave from the broadcast station or the radio.
If there is any facility or equipment which outputs strong radio waves near the installation location, install the projector at
a location sufficiently far from the source of the radio waves. Or, wrap the LAN cable connected to the <DIGITAL LINK/
LAN> terminal using a piece of metal foil or a metal pipe which is grounded at both ends.
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Focus adjustment
The high clarity projection lens is thermally affected by the light from the light source, making the focus unstable in the
period just after switching on the power.
It is recommended to perform the focus adjustment after 30 minutes have elapsed with the focus test pattern displayed.
For details of the test pattern, refer to “[TEST PATTERN] menu”.
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Do not install the projector at an altitude of 4 200 m (13 780') or higher above sea level.
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Do not use the projector in a location that the ambient temperature exceeds 50 °C (122 °F).
Using the projector in a location that the altitude is too high or the ambient temperature is too high may reduce the life of
the components or result in malfunctions.
Upper limit of the operating environment temperature varies depending on the altitude above sea level.
When using the projector at an altitude between 0 m (0') and 1 400 m (4 593') above sea level: 0 °C (32 °F) to 50 °C
(122 °F)
When using the projector at an altitude between 1 400 m (4 593') and 4 200 m (13 780') above sea level: 0 °C (32 °F) to
45 °C (113 °F)
4
PREFACE
< RZ21K / RS20K >
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Projection in all 360° direction is possible.
Cautions when setting up the projector
f
Install the projector in a place or with a mount that can sufficiently tolerate the weight. The position of the projected image
may shift if the strength is not sufficient.
f
Use the adjustable feet only for the floor standing installation and for adjusting the angle. Using them for other purposes
may damage the projector.
f
The adjustable feet can be removed if not needed in the installation. However, do not use the screw holes where the ad-
justable feet were removed to fix the projector to a mount.
Also, do not attach any screws not instructed in the operating instructions of the optional accessories into the screw holes
where the adjustable feet are removed. Doing so may damage the projector.
f
When using the projector in any method other than the floor installation using the adjustable feet or ceiling mounting instal-
lation using the Ceiling Mount Bracket, remove the four adjustable feet and use the six screw holes to fix the projector to a
mount.
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Use a torque screwdriver or Allen torque wrench to tighten the fixing screws to their specified tightening torques.
Do not use electric screwdrivers or impact screwdrivers.
(Screw diameter: M6, tapping depth inside the projector: 27 mm (1-1/16"), screw tightening torque: 4 ± 0.5 N·m)
360°
360°
360°
360° vertically
360° horizontally
360° tilted
(combination of vertical and horizontal)
5
PREFACE
< RZ21K / RS20K >
CONTENTS
1. Safety Precautions
2. Specifications
SECTION 1 SERVICE INFORMATION
1. The name of each part
2. Menu Navigation
3. Service Mode
4. Notes on service
5. Troubleshooting
SECTION 2 DISASSEMBLY PROCEDURES
1. Parts Locations
2. Disassembly Instructions
<Reference> Wiring connection
SECTION 3 ADJUSTMENTS
1. Adjustment item and procedure
2. Firmware update procedure
For the schematic diagram and parts list, refer to the separated booklet "Schematic diagram" and "Parts List"
respectively.
6
PREFACE
< RZ21K / RS20K >
1. Safety Precautions
1. 1. General Guidelines
- For continued safety, no modification of any circuit must be attempted.
- Unplug the power cord from the power outlet before disassembling this projector.
- Use correctly the supplied power cord and must ground it.
- It is advisable to use an isolation transformer in the AC power line before the service.
- Be careful not to touch the rotation part (cooling fan, etc.) of this projector when you service with the upper case removed
and the power supply turned ON.
- Observe the original lead dress during the service. If a short circuit is found, replace all the parts overheated or damaged
by the short circuit.
- After the service, all the protective devices such as insulation barriers, insulation papers, shields, and isolation R-C combi-
nations must be properly installed.
- After the service, check the leakage current to prevent the customer from getting an electric shock.
1. 2. Leakage Current Check
1. Prepare the measuring circuit as shown in Fig.1.
Be sure to use a voltmeter having the performance described in Table 1.
2. Assemble the circuit as shown in Fig. 2. Plug the power cord in a power outlet.
3. Connect M1 to T1 according to Fig. 2 and measure the voltage.
4. Change the connection of M1 from T1 to T2 and measure the voltage again.
5. The voltmeter must read 0.375 V or lower in both of steps 3 and 4. This means that the current must be 0.75mA or less.
6. If the reading is out of the above standard, the projector must be repaired and rechecked before returning to the customer
because of a possibility of an electric shock.
M1
M2
Rs
Cs
Rb
10KΩ ±0.1%
0.022µF
±1.0%
Vb
(V) V
Rs: 1500 Ω±0.1%
Cs: 0.22 µF±1.0%
Rb: 500 Ω±0.1%
to T1
or T2
in FIg.2
Weighted leakage current=Vb / 500 (A)
Fig. 1
Isolation transformer
T1
T2
connection
to power outlet
M1
M2
Fig.2
Projector
Measuring
Circuit (Fig.1)
Performance
Voltmeter
(rms reading)
Accurancy:
≤ 2%
Input resistance:
≥ 1 MΩ
Input capacitance: ≤ 200 pF
Frequency range: 15 Hz to 1 MHz
Table. 1