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Model
PT-DZ780 PT-DW750 PT-DX820 PT-DZ780BE PT-DZ780LBE PT-DZ780LWE PT-DZ780WE PT-DW750BE PT-DX820BE PT-DX820LBE (serv.man2)
Pages
104
Size
59.12 MB
Type
PDF
Document
Service Manual
Brand
Device
Projector / 1-CHIP DLP BASED PROJECTOR
File
pt-dz780-pt-dw750-pt-dx820-pt-dz780be-pt-dz780lbe-.pdf
Date

Panasonic PT-DZ780 / PT-DW750 / PT-DX820 / PT-DZ780BE / PT-DZ780LBE / PT-DZ780LWE / PT-DZ780WE / PT-DW750BE / PT-DX820BE / PT-DX820LBE (serv.man2) Service Manual ▷ View online

PREFACE
< DZ780/DW750/DX820 >
1. Safety Precautions
  1.1. General Guidelines
  1.2. Leakage Current Check
 Accuracy : 
 2%
 Input resistance :
 1 MΩ
 Input capacitance :
 200 pF
 Frequency range :
15 Hz to 1 MHz
  1.3. UV Precaution and UHM Lamp Precautions
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.
- 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.
- 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.
Performance
 Voltmeter
 (rms reading)
Table. 1
M1
M2
Rs
Rb
Cs
10 kΩ ±0.1%
V
Vb
(V)
0.022μF
±1.0%
to T1
or T2
in FIG.2
Rs:1500 Ω ±0.1%
Cs:0.22μF ±1.0%
Rb:500 Ω ±0.1%
Weighted leakage current = Vb / 500 (A)
M1
M2
T1
T2
Isolation transformer
to power outlet
Measuring
circuit (Fig.1)
Multi Window
Processor
connection
Fig. 1
Fig. 2
2
PREFACE
< DZ780/DW750/DX820 >
2. Specifications
  2. 1. Specifications
f
The specifications of the projector are as follows.
Power supply
PT-DZ780B, PT-DZ780W, PT-DZ780LB, PT-DZ780LW, 
PT-DW750B, PT-DW750W, PT-DW750LB, PT-DW750LW, 
PT-DX820B, PT-DX820W, PT-DX820LB, PT-DX820LW
100 V - 240 V ~  (100 V - 240 V 
alternating current), 50 Hz/60 Hz (9.0 A - 
4.0 A)
PT-DZ780BD, PT-DZ780WD, PT-DZ780LBD, PT-DZ780LWD, 
PT-DW750BD, PT-DW750WD, PT-DW750LBD, 
PT-DW750LWD
PT-DZ780BT, PT-DW750BT, PT-DX820BT
110 V ~  (110 V alternating current), 60 Hz 
(8.0 A)
Power consumption
PT-DZ780B, PT-DZ780W, PT-DZ780LB, PT-DZ780LW, 
PT-DW750B, PT-DW750W, PT-DW750LB, PT-DW750LW, 
PT-DX820B, PT-DX820W, PT-DX820LB, PT-DX820LW
790 W
PT-DZ780BD, PT-DZ780WD, PT-DZ780LBD, PT-DZ780LWD, 
PT-DW750BD, PT-DW750WD, PT-DW750LBD, 
PT-DW750LWD
PT-DZ780BT, PT-DW750BT, PT-DX820BT
785 W
PT-DZ780B, PT-DZ780W, PT-DZ780LB, PT-DZ780LW, 
PT-DW750B, PT-DW750W, PT-DW750LB, PT-DW750LW, 
PT-DX820B, PT-DX820W, PT-DX820LB, PT-DX820LW
Approx. 0.3 W when [STANDBY MODE] is 
set to [ECO]
PT-DZ780BD, PT-DZ780WD, PT-DZ780LBD, PT-DZ780LWD, 
PT-DW750BD, PT-DW750WD, PT-DW750LBD, 
PT-DW750LWD
PT-DZ780BT, PT-DW750BT, PT-DX820BT
Approx. 0.2 W when [STANDBY MODE] is 
set to [ECO]
Approx. 3 W when [STANDBY MODE] is set to [NORMAL]
DLP chip
Size
PT-DZ780
17 mm (0.67") (aspect ratio 16:10)
PT-DW750
16.5 mm (0.65") (aspect ratio 16:10)
PT-DX820
17.8 mm (0.7") (aspect ratio 4:3)
Display system
1-unit DLP chip, DLP type
Number of pixels
PT-DZ780
2 304 000 pixels (1 920 x 1 200 dots)
PT-DW750
1 024 000 pixels (1 280 x 800 dots)
PT-DX820
786 432 pixels (1 024 x 768 dots)
Lens
*1
Electric zoom
PT-DZ780
1.7 - 2.4:1
PT-DW750, PT-DX820
1.8 - 2.5:1
Electric focus
F = 1.7 - 1.9
f = 25.6 mm - 35.7 mm
Luminous lamp
310 W UHM lamp x 2
Light output
*2*3
PT-DZ780, PT-DW750
7 000 lm (ANSI)
PT-DX820
8 200 lm (ANSI)
Contrast ratio
*3
PT-DZ780, PT-DW750
3 000:1
PT-DX820
2 400:1
Color system
7 standards (NTSC/NTSC4.43/PAL/PAL-N/PAL-M/SECAM/PAL60)
Projected image size
*4
1.27 m (50") to 15.24 m (600")
Image aspect ratio
PT-DZ780, PT-DW750
16:10
PT-DX820
4:3
Projection method
[FRONT/CEILING], [FRONT/FLOOR], [REAR/CEILING], [REAR/FLOOR]
Power cable length
3.0 m (118-1/8")
Outer case
Molded plastic
Outer color
White model
White
Black model
Black
*1  The lens for PT-DZ780L series, PT-DW750L series, and PT-DX820L series is sold separately.
*2  Value is for the supplied standard zoom lens. The value varies depending on the lens.
*3  Measurement, measuring conditions and method of notation all comply with ISO21118 international standards.
*4  When the lens ET-DLE055 is used, the maximum size is 5.08 m (200"). When the lens ET-DLE030 is used, the maximum size is 2.54 m (100") to 
8.89 m (350").
2
PREFACE
< DZ780/DW750/DX820 >
Dimensions
Width
498 mm (19-19/32")
Height
175 mm (6-7/8") (with legs at shortest position)
Depth
PT-DZ780, PT-DW750, PT-DX820 521 mm (20-1/2") (including standard zoom lens)
PT-DZ780L, PT-DW750L, 
PT-DX820L
498 mm (19-19/32") (excluding lens mount cover and optional lens)
Weight
PT-DZ780, PT-DW750, PT-DX820 Approx. 17.8 k
] (39.3 lbs.)
*1
 (including standard zoom lens)
PT-DZ780L, PT-DW750L, 
PT-DX820L
Approx. 17.0 k
] (37.5 lbs.)
*1
 (excluding lens mount cover and optional 
lens)
Noise level
*2
30 dB
Operating 
environment
Operating 
environment 
temperature
*3
0 °C (32 °F) to 45 °C (113 °F)
Operating 
environment 
humidity
10 % to 80 % (no condensation)
Remote 
control
Power supply
DC 3 V (AAA/R03 battery x 2)
Operating range
Within approx. 30 m (98'5") (when operated directly in front of signal receiver)
Weight
102 
] (3.6 ozs.) (including batteries)
Dimensions
Width: 48 mm (1-7/8"), Height: 145 mm (5-23/32"), Depth: 27 mm (1-1/16")
*1  Average value. Weight varies for each product.
*2  Measurement, measuring conditions and method of notation all comply with ISO21118 international standards.
*3  When using the projector at elevations lower than 2 700 m (8 858') above sea level, and the operating environment temperature becomes 35 °C 
(95 °F) or higher, the light output may be reduced to protect the projector. When using the projector at elevations between 2 700 m (8 858') and 
4 200 m (13 780'), and the operating environment temperature becomes 25 °C (77 °F) or higher, the light output may be reduced to protect the 
projector.
3
PREFACE
< DZ780/DW750/DX820 >
  2. 2. Applicable scanning frequency
f
Refer to Operating Instructions “List of compatible signals”  for the types of video signals that can be used with the projector.
For video signal
Horizontal: 15.73 kHz, Vertical: 59.94 Hz; Horizontal: 15.63 kHz, Vertical: 50 Hz
For Y/C signal
For RGB signal
Horizontal: 15 kHz to 100 kHz, Vertical: 24 Hz to 120 Hz
PIAS (Panasonic Intelligent Auto Scanning) system
 
f Dot clock frequency: 162 MHz or less
For YC
B
C
R
/YP
B
P
R
 signal
 
f 525i (480i)
Horizontal: 15.73 kHz, Vertical: 59.94 Hz
 
f 525p (480p)
Horizontal: 31.47 kHz, Vertical: 59.94 Hz
 
f 750 (720)/60p
Horizontal: 45 kHz, Vertical: 60 Hz
 
f 1125 (1035)/60i
Horizontal: 33.75 kHz, Vertical: 60 Hz
 
f 1125 (1080)/50i
Horizontal: 28.13 kHz, Vertical: 50 Hz
 
f 1125 (1080)/24sF
Horizontal: 27 kHz, Vertical: 48 Hz
 
f 1125 (1080)/30p
Horizontal: 33.75 kHz, Vertical: 30 Hz
 
f 1125 (1080)/50p
Horizontal: 56.25 kHz, Vertical: 50 Hz
 
f 625i (576i)
Horizontal: 15.63 kHz, Vertical: 50 Hz
 
f 625p (576p)
Horizontal: 31.25 kHz, Vertical: 50 Hz
 
f 750 (720)/50p
Horizontal: 37.5 kHz, Vertical: 50 Hz
 
f 1125 (1080)/60i
Horizontal: 33.75 kHz, Vertical: 60 Hz
 
f 1125 (1080)/24p
Horizontal: 27 kHz, Vertical: 24 Hz
 
f 1125 (1080)/25p
Horizontal: 28.13 kHz, Vertical: 25 Hz
 
f 1125 (1080)/60p
Horizontal: 67.5 kHz, Vertical: 60 Hz
 
f The SYNC/HD and VD terminals do not support 3 value SYNC.
For DVI-D signal
525i (480i)
*1
, 625i (576i)
*1
, 525p (480p), 625p (576p), 750 (720)/60p,  
750 (720)/50p, 1125 (1080)/60i, 1125 (1080)/50i, 1125 (1080)/24p,  
1125 (1080)/24sF, 1125 (1080)/25p, 1125 (1080)/30p,  
1125 (1080)/60p, 1125 (1080)/50p
 
f Displayable resolution: VGA to WUXGA (non-interlaced)
 
f Dot clock frequency: 25 MHz to 162 MHz
For HDMI signal
525i (480i)
*1
, 625i (576i)
*1
, 525p (480p), 625p (576p), 750 (720)/60p,  
750 (720)/50p, 1125 (1080)/60i, 1125 (1080)/50i, 1125 (1080)/24p,  
1125 (1080)/24sF, 1125 (1080)/25p, 1125 (1080)/30p,  
1125 (1080)/60p, 1125 (1080)/50p
 
f Displayable resolution: VGA to WUXGA (non-interlaced)
 
f Dot clock frequency: 25 MHz to 162 MHz
For SDI signal
(Only for PT-DZ780)
SD-SDI signal
SMPTE ST 259 compliant
YC
B
C
R
 4:2:2 10-bit
480i, 576i
Single link HD-SDI signal
SMPTE ST 292 compliant
YP
B
P
R
 4:2:2 10-bit
720/50p, 720/60p, 1035/60i, 1080/50i, 1080/60i, 1080/25p, 
1080/24p, 1080/24sF, 1080/30p
3G-SDI signal
SMPTE ST 424 compliant
YP
B
P
R
 4:2:2 10-bit
1080/50p, 1080/60p
RGB 4:4:4 12-bit/10-bit
1080/50i, 1080/60i, 1080/25p, 1080/24p, 1080/24sF, 1080/30p
*1  Pixel-Repetition signal (dot clock frequency 27.0 MHz) only
Note
 
f DIGITAL LINK input compatible signal is the same as HDMI input compatible signal.
4
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