Panasonic LCD Projector PT-LB90NTU PT-LB90U PT-LB78VU PT-LB75VU Operating Instructions

Troubleshooting
Maintenance
ENGLISH - 51
Troubleshooting
Confirm the following problem and cause. 
Should any problem persist, contact an Authorized Service Center.
Problem CausePage
Power does not turn on. The power cord may not be connected securely.
 
z19
No electric supply at the wall outlet.
 
z21
The circuit breakers have tripped.
 
z—
TEMP
 
z or LAMP indicator is lit or flashes. 46
The lamp unit cover has not been securely installed.
 
z49
The control buttons are 
 
zLOCKED. 44
CONTROL PANEL
 
z...

Technical Information
Appendix
52 - ENGLISH
Technical Information
List of compatible signals
This projector can project the following image signals.
ModeDisplay resolution 
 
(dots) *1
Scanning frequency Dot clock  
frequency   
(MHz) Picture  
quality *
2PnP  
availability *3Terminals
H (kHz) V (Hz)
NTSC/NTSC4.43/  PAL-M/PAL60 720 × 480i
15.759.9 —A
VIDEO/S-VIDEO
PAL/PAL-N/SECAM 720 × 576i15.650— A
525i (480i) 720 × 480i15.759.913.5 A
COMPUTER/ YP
BPR
625i (576i) 720 × 576i15.65013.5 A
525p (480p) 720 ×...

Technical Information
Appendix
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Serial terminal
The serial connector which is on the connector panel of the projector conforms to the RS-232C interface specifi-
cations, so that the projector can be controlled by a personal computer \
which is connected to this connector.
Connection 
J
Computer
D-Sub 9-pin (male)
Serial terminal (female)
Pin assignments and signal names 
J
Pin No.
Signal name Contents
NC
TXDTransmitted data
RXD Received data
NC
GND Earth
NC
RTS
Connected internally
CTS
NC...

Technical Information
Appendix
54 - ENGLISH
 
JCable specifications
(When connected to a personal computer)
 
 
 
 
 
 
Control commands 
J
The following commands are used for control of the projector with a comp\
uter.
(Operation commands)
Command
Control contents Remarks
PON Power on The PON command is ignored during lamp ON control.
 
z
If a PON command is received while the cooling fan is operating after th\
e lamp has switched  
z
off, the lamp is not turned back on again straight away in order to...

Appendix
ENGLISH - 55
Specifications
The specifications of this projector are as follows.
Power supplyAC 100 - 240 V 50 Hz/60 Hz
Power consumption 300 W 
During standby (when fan is stopped): Approx. 0.9 W
Amps 3.7 A - 1.5 A
LCD panel Panel size (diagonal)
0.63 type (16.00 mm)
Aspect ratio 4:3
Display method 3 transparent LCD panels (RGB)
Drive method Active matrix method
Pixels 786 432 (1 024 × 768) × 3 panels
Lens Manual zoom (1.2×)/Manual focus
 
F 1.65 - 1.93, f 18.53 mm - 22.18 mm
Lamp UHM lamp (220...

Appendix
56 - ENGLISH
Specifications
Wireless LAN 
(PT-LB90NTU 
only)Compatible
IEEE802.11 b/IEEE802.11 g (Wireless LAN standard protocol)
Wireless channel IEEE802.11 b/IEEE802.11 g: 1 - 13 channels
Distance Approx. 30 m (98'5") (depends on the usage environment)
Cabinet Moulded plastic (PC+ABS)
Dimensions Width: 
368 mm (14  1/2")
 
z
Height:  88 mm (3  1/2") 
z
Length:  233 mm (9  1/8") (not including surface projection parts) 
z
Weight Approx. 2.96 kg (6.6 lbs.) *3
Operating...

Appendix
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Ceiling mount bracket safeguards
Installation work of the ceiling mount bracket should only be carried by a qualified technician. 
z
Even if it is during guaranteed period, the manufacturer is not responsi\
ble for any hazard or damage caused  
z
by using a ceiling mount bracket which is not purchased from an authoriz\
ed distributors, or environmental 
conditions.
Remove an unused ceiling mount bracket promptly.
 
z
Make sure to use a torque driver and do not use an electrical...

Dimensions
Appendix
58 - ENGLISH
Dimensions
Unit: mm
233 
(9 - 5/32")
97
3 - 13/16"
883 - 7/16"
93
3 - 21/32"
 - 3/16"   5
4
- 5/32"
9
- 1 1/32"
2 - 1/8"
   54.5
3
- 3/32"
368 (14 - 15/32")
3 - 15/32"
88.6 103.6
4 - 1/16"194.47 - 5/8"
 
 
Trademark acknowledgements
 
 
VGA and XGA are trademarks of International Business Machines Corporation. 
z
S-VGA is a registered trademark of the Video Electronics Standards Association. 
z
HDMI, the HDMI logo and...

Index
Appendix
ENGLISH - 59
Index
A
Accessories ................................... 10
ASPECT  ........................................ 33
AUDIO SETTING  ........................... 41
AUTO SETUP  .......................... 25, 37
AV MUTE  ....................................... 24
B
BACK COLOR  ............................... 37
BRIGHTNESS  ............................... 30
C
Cautions on use ............................... 9
Cautions when installing  .................. 8
Cautions when transporting...

Avis important concernant la sécurité
60 - FRANÇAIS
Informations importantesCher client Panasonic:
Il est important de lire et comprendre les informations suivantes car el\
les fournissent des détails qui vous permettront 
d’utiliser le projecteur sans danger pour vous et votre environnement\
, conformément aux dispositions légales  
rela-tives à l’utilisation de projecteurs. Avant de brancher, utiliser ou régler ce projecteur, veuillez lire toute la   
notice puis la conserver avec le projecteur pour...