Panasonic PT-TW370 / PT-TX430 / PT-TX340 Service Manual ▷ View online
4
PREFACE
<TW370/TX430/TX340>
Within 30°
Within 30°
Within 15°
Within 15°
r
Cautions when setting the projectors
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
Do not block the ventilation ports (intake and exhaust) of the projector.
f
Avoid heating and cooling air from the air conditioning system directly blow to the ventilation ports (intake and exhaust) of
the projector.
f
When placing the projector in a confined space, a ventilation and/or air conditioning system is required. Exhaust heat may
accumulate when the ventilation is not enough, triggering the protection circuit of the projector.
5
PREFACE
<TW370/TX430/TX340>
For the block diagrams, schematic diagrams and parts list, refer to each separated booklet "Block and Schematic
diagrams" and "Parts List" respectively.
CONTENTS
1. Safety Precautions
2. Specifications
2. Specifications
SECTION 1 SERVICE INFORMATION
1. Circuits Protection
2. Maintenance/Replacement
3. Notes on service
4. Troubleshooting
2. Maintenance/Replacement
3. Notes on service
4. Troubleshooting
SECTION 2 DISASSEMBLY PROCEDURES
1. Mechanical & Electrical Parts Disassembly
2. Optical Parts Disassembly
2. Optical Parts Disassembly
SECTION 3 ADJUSTMENTS
1. Adjustments Items and Procedures
2. Optical Adjustment
3. Electrical adjustment
4. Firmware Update Procedure
2. Optical Adjustment
3. Electrical adjustment
4. Firmware Update Procedure
6
PREFACE
<TW370/TX430/TX340>
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 combinations
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.
1.3. UV Precaution and UHM Lamp Precautions
- Be sure to unplug the power cord from the power outlet when replacing the lamp.
- Because the lamp reaches a very high temperature during its operation, wait until it cools completely
when replacing the lamp unit.
- The lamp emits small amounts of UV-radiation, avoid direct-eye contact with the light.
- The lamp unit has high internal pressure. If improperly handled, an explosion and severe injury or accidents might result.
- Because the high pressure lamp involves a risk of failure, never touch the lamp wire lead during the service.
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
7
PREFACE
<TW370/TX430/TX340>
2. Specifications
106 - ENGLISH
Specifications
The specifications of the projector are as follows.
Power supply
100 V - 240 V
(100 V - 240 V alternating current), 50 Hz/60 Hz
Power consumption
3.5 A - 1.5 A, 300 W
In standby mode (when [Standby mode] is set to [Eco]): 0.5 W
In standby mode (when [Standby mode] is set to [Normal]): 6 W
In standby mode (when [Standby mode] is set to [Eco]): 0.5 W
In standby mode (when [Standby mode] is set to [Normal]): 6 W
LCD
panel
Panel size
PT-TW370
1.5 cm (0.59") (aspect ratio 16 : 10)
PT-TX430, PT-TX340
1.6 cm (0.63") (aspect ratio 4 : 3)
Display method
Translucent screen LCD panel 3 panels, 3 primary color system
Drive method
Active matrix method
Pixels
PT-TW370
1 024 000 pixels (1 280 x 800 dots) x 3 panels
PT-TX430, PT-TX340
786 432 pixels (1 024 x 768 dots) x 3 panels
Lens
Fixed focus (throw ratio: 0.46:1)
Manual focus: F = 1.8, f = 6.08 mm
Manual focus: F = 1.8, f = 6.08 mm
Luminous lamp
230 W UHM lamp
Light output *
1
PT-TW370
3 300 lm
PT-TX430
3 800 lm
PT-TX340
3 200 lm
Contrast ratio *
1
16 000 : 1 (When [Lamp control] is set to [ (Normal)], [Image mode] is set to [Dynamic]
and [Iris] is set to [On].)
and [Iris] is set to [On].)
Color system
7 (NTSC, NTSC4.43, PAL, PAL-N, PAL-M, SECAM, PAL60)
Projection size
1.27 m -2.54 m (50"-100")
Screen aspect ratio
PT-TW370
16:10
PT-TX430, PT-TX340
4:3
Projection scheme
[Front], [Rear], [Ceiling/Front], [Ceiling/Rear] (Menu setting system)
Built-in speaker
10 W (monaural) x 1
Power cable length
3.0 m (118-3/32")
Cabinet
Molded plastic
Dimensions
Width: 335 mm (13-3/16")
Height: 134.1 mm (5-9/32") (when adjustable feet shortened)
Depth: 329 mm (12-15/16")
Weight
Approx.3.9 kg (8.60 lbs.) *
2
Noise level *
1
When set to [ (Normal)] in [Lamp control] : 39 dB
When set to [ (Eco)] in [Lamp control] : 35 dB
When set to [ (Quiet)] in [Lamp control] : 30 dB
Operating
environ-
ment
Operating
environment
temperature *
3
5 °C (41 °F) to 40 °C (104 °F) (Elevation: below 1 400 m (4 593'))
5 °C (41 °F) to 35 °C (95 °F) (Elevation: 1 400 m (4 593') ~ 2 700 m (8 858'))
Operating
environment
humidity
20 % to 80 % (no condensation)
Remote
control
Power supply
DC 3 V (AAA/R03/LR03 battery x 2)
Operating range Approx. 5 m (16'4-13/16") (when operated directly in front of receptor)
Weight
Weight
63 g (2.22 ozs.) (including batteries)
Dimensions
Width : 44 mm (1-23/32"), Length : 105 mm (4-1/8"), Height :20.5 mm (13/16")
*1 Measurement, measuring conditions and method of notation all comply with ISO/IEC 21118:2012 international standards.
*2 This is an average value. It may differ depending on individual product.
*3 When the projector is operated at an elevation of 1 400 m (4 593') or less, if the ambient temperature exceeds 35 °C,
[Lamp control] will be switched to [ (Eco)] automatically to protect the projector; When the projector is operated at an
elevation between 1 400 m (4 593') and 2 700 m (8 858'), if the ambient temperature exceeds 30 °C, [Lamp control] will be
switched to [ (Eco)] automatically to protect the projector.
Note
f
The part numbers of accessories and separately sold components are subject to change without notice.
Chapter 7 Appendix - Specifications
