Toshiba Projector Tlp 790 User Manual

61CONTENTS
Document
imaging camera
With the document camera operating, fully
cover the camera lens with a piece of black
paper or cloth.
1
Correcting illuminated defects
Note
Do not press ARM LIGHT and EXIT buttons simultaneously if the camera lens is not
covered. Doing so will not only erase the white spot correction data already set but also
result in parts ot the image that are properly displayed being corrected. Also be careful if
the camera input mode is not selected.
ARM LIGHT
EXIT
KEYSTONE...

62
Maintenance
CONTENTS
If there is some problem inside the projector,
the indicators light up or blink.
Trouble indications
Indicators
Or(Lit in red) (Off)
ONLAMPTEMPFA N
(Lit in red)(Lit in red)
ONLAMPTEMPFA N
(Flashing 
  in orange)ONLAMPTEMPFA N
(Lit in red)
ONLAMPTEMPFA N
(Lit in red)
Or
(Lit or flashing 
     in red)
(Lit or flashing
      in orange)
Or
Or
Or
(Lit in red)(Lit in red)
(Lit in green)
(Lit in green) (Lit in orange)
ONLAMPTEMPFA N
(off)
The power does not come on.→Malfunction of the...

63
Maintenance
CONTENTSAir filter cleaning
CAUTION
If you use the projector mounted on the ceiling,
ask the dealer to carry out the maintenance
such as cleaning.
The filter inside the air filter cover is the part
to shut out dusts or dregs.
Do not use the projector with the filter taken
off.
We recommend you clean the air filter
frequently. (The cleaning period is once per
50 hours approximately).2 1
Unplug the power cord.
Take off the air filter
cover.
The filter is on the right and
bottom side of the...

64
Maintenance
CONTENTSAir filter cleaning (continued)
Notes
•When the air filter is dusty, the ventilation is
impaired. This causes the temperature inside the
projector to rise, and may damage the unit.
•Attach the air filter cover firmly after the cleaning.
If it is not set correctly, the dusts will enter and
they will be projected and overlapped on the
picture.
•If you wash the air filter with water, be sure to let it
dry fully before reinstalling it.  Using it damp will
result in malfunction.
•If the...

65
Maintenance
CONTENTS
Cleaning the lens
Use a blower or a lens cleaner to clean the lens.
Never rub or tap the lens with a hard object as
the lens surface is fragile.
Lens and main unit cleaning
Cleaning the main unit
•Pull out the power cord before cleaning.
•Use a soft cloth to wipe off stains from the
surface.
•To remove difficult stains, use a soft cloth
slightly moistened with a weak solution of
synthetic detergent and water, and finish with
a soft, dry cloth.
Replacing the intake, exhaust fans...

66
Maintenance
CONTENTSLamp replacement
A lamp is consumable supplies. If used for
extended periods, images will appear dark,
and the lamp could burn out. This is
characteristic of a lamp, and is not
malfunction. (The lifetime of the lamp
depends on conditions of use.) If this
happens, replace it with a new one.
CAUTION
• If you use the projector mounted on the ceiling,
ask the dealer to carry out the maintenance
such as cleaning or replacement of the lamp.
• When replacing, always use lamp “TLPL79”...

67
Maintenance
CONTENTS
Notes
•When the CALL button is pressed, the “Lamp
time” (the approximate amount of time the lamp
has been used) will be displayed. 
41
•The lamp should be replaced if the total working
time exceeds about 1,500 hours.
When the “Lamp time” is displayed as 1,500
hours, the icon 
 appear. They will disappear
when you do some operation.
•Attach the lamp cover firmly after replacing the
lamp. If it is not set correctly, the power will not
turn on.
•Use a new lamp when replacing it.
•The...

68
Others
CONTENTSBefore calling service personal
Symptom
The power does not come on.
The power turns off while
using the projector.
No image appears.
No sound is heard.
Desired input source cannot
be selected by the INPUT
button.
Analog RGB(1) input or Y/P
B/
PR input colors are not right.
Analog RGB(2) input image
does not appear.
Digital RGB input image does
not appear.
The image is blurred.
Focusing is uneven.
The picture is dim.
Cause
• The power cord is disconnected.
• The lamp cover is not...

69
Others
CONTENTS
Symptom
The color is faint.
The tint is not good.
The remote control does not
work.
Mouse function cannot be used
from the remote control unit.
Document camera image is
blurry.
Document camera image
flickers.
Document camera image
movement is awkward.
Horizontal stripes appear
when document projected with
the document camera is
moved.
Cause
•The “Color”, “Tint”, “R-Level”, “G-Level” or “B-Level” adjustments
are not correct.
•The lamp life is ending.
•The remote control is not facing...

70
Others
CONTENTS
Mini D-sub 15pin
connector
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Description
T.M.D.S. data 2 -
T.M.D.S. data 2 +
T.M.D.S. data 2/4 shield
T.M.D.S. data 4 -
T.M.D.S. data 4 +
DDC clock
DDC data
Analog vertical sync signal
T.M.D.S. data 1 -
T.M.D.S. data 1 +
T.M.D.S. data 1/3 shield
T.M.D.S. data 3 -
T.M.D.S. data 3 +
+5V power
GND (+5V, H Sync & V Sync)
Pin assignment of COMPUTER IN connector
COMPUTER IN 1
COMPUTER IN 2
DVI ANALOG & DIGITAL
connector
Input signal
Analog R, G, B...