Panasonic PT-LW330 / PT-LW280 / PT-LB360 / PT-LB330 / PT-LB300 / PT-LB280 (serv.man5) Service Manual ▷ View online
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Safety Instructions
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 step 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 UHP 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, explosion might result.
- Because the high pressure lamp involves a risk of failure, never touch the lamp wire lead during the service.
Fig. 1
Fig. 2
Table. 2
Weighted leak = Vb/500A
Accuracy:
Input resistance:
Input capacity:
Frequency scope:
Input capacity:
Frequency scope:
To power outlet
Insulation transformer
Connect
Projector
Measure
circuit
(Fig. 1)
Fig. 2
Table. 2
To T1
or T2
in Fig. 2
15HZ to 1MHZ
Voltmeter
(rms reading)
Performance
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Specifications
Specifications
Power supply
AC 100 V - 240 V, 50 Hz/60 Hz
Power consumption
100 V - 240 V, ~3.5A, 300 W
When [Standby mode] of [Setting] is set to [Eco]: 0.5W
When [Standby mode] of [Setting] is set to [Eco]: 0.5W
When [Standby mode] of [Setting] is set to [Normal]: 6W
Optical
block
Panel size
PT-LW330, PT-LW280
1.5 cm (0.59") (aspect ratio 16: 10)
PT-LB360, PT-LB330, PT-LB300,
PTLB280
1.6 cm (0.63") (aspect ratio 4: 3)
Display method
3 transparent Optical blocks (RGB)
Drive method
Passive matrix method
Pixels
PT-LW330, PT-LW280
1 024 000 pixels (1 280 x 800 dots) x 3 panels
PT-LB360, PT-LB330, PT-LB300,
PT-LB280
786,432 pixels (1,024 x 768 dots) x 3 panels
Lens
Zoom
1.2 x
Focus
PT-LW330, PT-LB330, PT-LB360, F 1.6 ~ 1.76, f 19.16 mm ~ 23.02 mm
PT-LW280, PT-LB300, PT-LB280
PT-LW280, PT-LB300, PT-LB280
F 2.1 ~ 2.25, f 19.11 mm ~ 22.94 mm
Luminous lamp
230 W UHM lamp
Light output
*1
PT-LB360
3 700 lm
PT-LW330, PT-LB330
3 300 lm
PT-LW280, PT-LB280
2 800 lm
PT-LB300
3 100 lm
Contrast ratio
*1
10 000 : 1 (When [Lamp control] is set to [ Normal], [Image mode] is set to [Dynamic]
and [Iris] is set to [On].)
Applicable
scanning
frequency
for Video signal
(including S-video)
Horizontal : 15.73 kHz, Vertical : 59.94 Hz,
Horizontal : 15.63 kHz, Vertical : 50.00 Hz
for RGB signal
Horizontal: 15 kHz - 91 kHz, Vertical: 24 Hz - 85 Hz
Dot clock frequency: 162 MHz or less
Dot clock frequency: 162 MHz or less
for YPBPR signal
[525i(480i)]
Horizontal 15.75 kHz, Vertical 59.94 Hz
625i(576i)
Horizontal 15.63 kHz, Vertical 50 Hz
[525i(480i)]
Horizontal 31.50 kHz, Vertical 59.94 Hz
[625p(576p)]
Horizontal 31.25 kHz, Vertical 50 Hz
[750(720)/60p]
Horizontal 45.00 kHz, Vertical 60 Hz
[750(720)/50p]
Horizontal 37.50 kHz, Vertical 50 Hz
[1125(1080)/60i]
Horizontal 33.75 kHz, Vertical 60 Hz
[1125(1080)50i]
Horizontal 28.13 kHz, Vertical 50 Hz
[1125(1080)60p]
Horizontal 67.50 kHz, Vertical 60 Hz
[1125(1080)50p]
Horizontal 56.25 kHz, Vertical 50 Hz
[1125(1080)24p]
Horizontal 27.00 kHz, Vertical 24 Hz
[1125(1080)24sF] Horizontal 27.00 kHz, Vertical 48 Hz
[1125(1080)25p]
Horizontal 28.13 kHz, Vertical 25 Hz
[1125(1080)30p]
Horizontal 33.75 kHz, Vertical 30 Hz
HD/SYNC and V terminal are not compliant with 3 value composite SYNC.
for HDMI signal
525i(480i), 625i(576i), 525p(480p), 625p(576p), 750(720)/60p, 750(720)/50p,
1125(1080)/24p, 1125(1080)/24sF, 1125(1080)/24p, 1125(1080)/30p, 1125(1080)/60p,
1125(1080)/50p, 1125(1080)/60i, 1125(1080)/50i
Displayable resolution: VGA to WUXGA (non-interlace)
Dot clock frequency: 162 MHz or less
*1 : Measurement, measuring conditions and method of notation all comply with ISO21118 international standards.
*2 : For details of video signals that can be projected using this projector, refer to “List of compatible signals”.
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Specifications
Color system
7 (NTSC, NTSC4.43, PAL, PAL-N, PAL-M, SECAM, PAL60)
Projection size
0.76 m - 7.62 m (30" - 300")
Screen aspect ratio
PT-LW330, PT-LW280
16 : 10
PT-LB360, PT-LB330,
PT-LB300, PT-LB280
4 : 3
Projection scheme
[Front], [Rear], [Ceiling/Front], [Ceiling/Rear] (Menu setting system)
Built-in speaker
PT-LW330, PT-LW280
PT-LB360, PT-LB330,
10 W (monaural) x 1
PT-LB300, PTLB280
2 W (monaural) x 1
Terminals
<COMPUTER 1 IN>
1 (High-density D-sub 15 pin female)
[RGB signal] 0.7 V [p-p] 75 Ω (When G-SYNC: 1.0 V [p-p] 75 Ω)
HD/SYNC TTL high impedance, automatic positive/negative polarity
compatible
VD TTL high impedance, automatic positive/negative polarity compatible
[YP
B
P
R
signal] Y: 1.0 V [p-p] including synchronization signal, P
B
P
R
: 0.7 V [p-p] 75 Ω
[Y/C signal] Y: 1.0 V [p-p] C: 0.286 V [p-p] 75 Ω S1 signal compatible
<COMPUTER 2 IN/
1 OUT>
*3
1 (High-density D-sub 15 pin female) (Input /Output switching)
[RGB signal] 0.7 V [p-p] 75 Ω (When G-SYNC: 1.0 V [p-p] 75 Ω)
HD/SYNC TTL high impedance, automatic positive/negative polarity
compatible
VD TTL high impedance, automatic positive/negative polarity compatible
<VIDEO IN>
1 (Pin jack 1.0 V [p-p] 75 Ω)
<HDMI IN>
1 (HDMI 19 pin, HDCP and Deep color compatible)
Audio signals: Linear PCM (Sampling frequency: 48 kHz/44.1 kHz/32 kHz)
<AUDIO IN>
1 (M3 stereo mini jack, 0.5 V [rms], Input impedance 22 kΩ and more)
1 (Pin jack x 2 (L-R), 0.5 V [rms], Input impedance 22 kΩ and more)
<AUDIO OUT>
1 (M3 stereo mini jack, stereo monitor output compatible,
0 V [rms] to 2.0 V [rms] variable, output impedance 2.2 kΩ and less)
<USB A/VIEWER>
*4
USB connector (type A x 1, output DC 5V, 500mA maximum)
<USB B/DISPLAY>
*5
USB connector (type B x 1)
<SERIAL IN>
1 (D-Sub 9 pin, RS-232C compliant, for computer control use)
<LAN>
*4
1 (for RJ-45 network connection, PJLink compatible, 10Base-T/100Base-TX)
Power cable length
1.8 m (70-7/8")
Cabinet
Molded plastic
Dimensions
Width: 335 mm (13-3/16")
Height: 96 mm (3-25/32") (when adjustable foot shortened)
Depth: 252 mm (9-29/32")
Weight
Approx.2.8 kg (6.17 lbs.)
*6
Noise level
*7
When set to [ (Normal)] in [Lamp control] : 37 dB
When set to [ (Eco 1)] in [Lamp control] : 33 dB
When set to [ (Eco 2)] in [Lamp control] : 28 dB
Operating
environment
Operating
environment
temperature
5 °C (41 °F) to 40 °C (104 °F) (Elevation: below 1 400 m (4 593'); [High land]: [Off])
5 °C (41 °F) to 35 °C (95 °F) (Elevation: 1 400 m (4 593') ~ 2 700 m (8 858'); [High
land]: [On])
Operating
environment
humidity
20%-80% (no condensation)
Remote
Controller
Power supply
DC 3 V (AAA/R03/LR03 battery x 2)
Operation range
Approx. 5 m (16'4-13/16") (when operated directly in front of receptor)
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")
*3 The <MONITOR OUT> terminal is only for PT-LB300 and PT-LB280.
*4 This terminal is only for PT-LW330, PT-LW280, PT-LB360 and PT-LB330.
*5 The <USB> terminal is only for PT-LB300 and PT-LB280.
*6 This is an average value. It may differ depending on individual product.
*7 Measurement, measuring conditions and method of notation all comply with ISO21118 international standards.
*8 [Lamp control] will be switched to [ (Eco 1)] automatically when the operating environment temperature is 35 °C to 40 °C.
Note
● The part numbers of accessories and separately sold components are subject to change without notice.
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Circuit Protections
Lamp cover switch
The lamp cover switch cuts off the drive signal to the lamp
circuit when the lamp cover is removed or not closed
completely. After opening the lamp cover for replacing the
lamp assy, place the lamp cover correctly otherwise the
projector cannot turn on.
Thermal switch
There is a thermal switch inside of the projector to detect
the internal temperature rising abnormally. When the
internal temperature around lamp reaches near 120°C
(±5°C), the thermal switch will open to cut off the power
supply to the lamp power circuit.
The thermal switch is not reset to normal automatically
even if the internal temperature becomes normal. Reset
the thermal switch following to the procedure below.
How to reset the thermal switch
1. Remove the cabinet top case.
2. Press the reset button on the thermal switch.
Caution:
Before press the reset button, disconnect the AC cord
from the projector.
This projector provides the following circuit protections to operate in safety. If the abnormality occurs inside the
projector, it will automatically turn off by operating one of the following protection circuits.
Fuse
(F2003)
Fuse (F2003)
A fuse is located inside of the projector. When the
ON (G)/
STANDBY (R)
indicator is not lighting, the fuse may be
opened. Check the fuse as following steps.
The fuse should be used with the following type;
Fuse Part No.: H2190011500
TYPE VBS UBM 6.3A 250V (PF) FUSE
CONQUER. TYPE VBS UBM
How to replace the fuse
1. The fuse is placed on the filter board. Remove the
cabinet top following the "Mechanical Disassembly".
Remote the cabinet top following the "Mechanical
Disassembly".
2. Take the fuse off from the fuse holder, and replace the
new one with the specified type.
Thermal fuse
Lamp cover switch