Toshiba Projector Tlp 681U User Manual

							CONTENTS41Maintenance
Air filter, lens and main unit
cleaning
CAUTION
If you use the projector mounted on the
ceiling, ask the dealer to carry out the
maintenance such as cleaning.
Cleaning the air filter
The filter under the air filter cover is the device
to shut out dusts or dregs.
Do not use the projector with the filter taken off.
Give a frequent clean especially to the air filter.
(The cleaning period is once per about 50
hours).
1) Unplug the power cord.
2) Take off the air filter cover.
The filter is on the right side of the projector.
Pull up the filter tabs.
3) Clean the air filter cover.
Remove dust and stains with a vacuum
cleaner.
Cleaner’s
nozzle
4) Attach the air filter cover.
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.
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.
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
and air filter
To maintain the efficiency of the projector,
replace the intake and exhaust fans about
every two to three years.
Ask the dealer for the replacement. 
						

							CONTENTS42Maintenance
Lamp replacement
The lamp will eventually begin to project dark
or dull pictures and finally will not light up.
(Lamp’s life length depends on the use
condition.) In such a case, replace the lamp
with 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
“TLPLF6”  (sold separately). For detail,
refer to the lamp instruction.
• If you have been using the projector, the
lamp will be very hot, and may cause burn
injuries. Wait for the lamp to cool (for longer
than 1 hour) before replacing it.
• If the lamp should break, please handle
with care to avoid injury due to broken
pieces and contact your dealer for repair
service.
1
2Unplug the power cord.
Wait until the lamp gets cold
enough.
3Take off the lamp cover on the
bottom panel.
Loosen two screws, and pull off the lamp
cover.
Pull out the lamp.
Loosen the two fixing screws, and lift up
the handle to pull out the lamp.
Load a new lamp.
Slide until it hits the bottom and tighten
the two fixed screws.
Attach the lamp cover.
Slide the cover in place and tighten two
screws.
Reset the lamp timer.
Refer to the lamp instructions for
resetting.
Notes
• The projector displays the total working time
at every 1,000 hours (only when plugged in
and turned on; ex. “ >1000H ”, “ >2000H ”).
• The lamp should be replaced if the total
working time exceeds about 2,000 hours.
• 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 lamp is made of glass and is very fragile.
Do not touch the lamp with your bare hands
and do not jolt or damage it. Do not use an
exhausted lamp.
4
56
7
1
2
1
2
2
1
3
2
1 
						

							CONTENTS43Others
Before calling service
personnel
Check the following points before asking for
support service.
Refer also to “Trouble indications”. 
40
The power does not come on.
  •The power cord is disconnected.
→Firmly plug in the power cord. 
19
  •The lamp cover is not attached correctly.
→Attach the cover correctly. 
42
The power turns off while using the
projector.
  •The ambient temperature of the
projection room is too high.
→Lower the ambient temperature of the
projection room, and turn the power
on.
No image appears.
  •The lens cover is on.
→Take off the lens cover. 
19
  •The wrong input is selected.
→Select the input source correctly. 
21
  •The muting mode is on.
→
Press MUTE to restore the picture. 23
(Continued)
  •The “Brightness” adjustment is at its
darkest.
→
Make the “Brightness” adjustment. 32
  •The source is not correctly connected to
the projector.
→Connect the source correctly to the
projector. 
16
No sounds are heard.
  •The wrong input is selected.
→Select the input source correctly. 
21
  •The audio muting mode is on.
→
Press MUTE to restore the sound. 23
  •The sound volume is at the minimum.
→Adjust the sound volume on the
menu. 
33
  •The source is not correctly connected to
the projector.
→Connect the source correctly to the
projector. 
16
The images are blurred. Focusing is
uneven.
  •The lens is dirty.
→Clean the lens.
Use a lens cleaner to clean the lens. 41
  •The picture is out of focus.
→Focus the picture. 
21
  •The projection distance is not
appropriate.
→Adjust the distance properly. 
19
  •The projecting light is not hitting the
screen squarely.
→Adjust the projecting direction so that
the light hits the screen squarely. 
19
  •The “Brightness”, “Contrast”, “Sharpness”
or “Phase” adjustments are not correct.
→Make the “Image” or “Picture”
adjustments. 
31 32
The pictures are dim.
  •The “Brightness” or “Contrast”
adjustments are not correct.
→Make the “Picture” adjustments. 
32
  •The lamp life is ending.
→Replace the lamp. 
42
The colors are faint. The colors are strange.
  •The “Color”, “Tint”, “R-Level”, “G-Level” or
“B-Level” adjustments are not correct.
→Make the “Picture” adjustments. 
32
  •The lamp life is ending.
→Replace the lamp. 
42 
						

							CONTENTS44Others
(Continued)
Image does not appear when using the
document imaging camera.
  ¥ The wrong input is selected.
®Select the correct input source. 
37
Image is out of focus or not clear when
using the document imaging camera.
  ¥ The camera lens is dirty.
®Clean the camera lens.
Use a lens cleaner to clean the lens. 41
  ¥ The document imaging camera is out of
focus.
®Focus the document imaging camera.
38
  ¥ Focus between main unit and screen is
not correct.
®Focus the picture by turning the
focusing ring. 
21
  ¥ The light is not on.
The image may not be projected clearly if
the light is not on.
®Turn on the light. 
37
The remote control does not work.
  ¥ The remote control is not facing the
remote sensor.
®Face the remote control transmitter
toward the remote sensor on the
projector. 
15
  ¥ The remote control is too far.
®Operate within about 5 meters. 
15
  ¥ There is an obstruction between the
remote control and the remote sensor.
®Remove the obstacle.
  ¥ The batteries are exhausted.
®Replace the batteries. 
14
  ¥ The operating mode of the remote
control is not set correctly.
®Set the POINTER/PJ selector
according to the equipment you want
to control. 
13 
						

							CONTENTS45Others
Input signal
Mode determination and signal system
 : full compatible : dot resizing display
 : simplified display : high resolution serial transfer control
NTSC
PAL/SECAM
Digital broadcasting
Digital broadcasting
Digital broadcasting
Hi-Vision/Digital broadcasting
PC98 Standard
VGA-350
VGA-400
VGA 85Hz-1
VGA 85Hz-2
VGA 60Hz
VGA 72Hz
VGA 75Hz
VGA 85Hz-4
MAC-13”
SVGA 56Hz
SVGA 60Hz
SVGA 72Hz
SVGA 75Hz
SVGA 85Hz
MAC-16”
XGA 43Hz interlace
15.734
15.625
15.750
31.500
47.500
33.750
24.830
31.470
31.470
37.861
37.861
31.470
37.861
37.500
43.269
35.000
35.156
37.879
48.077
46.875
53.674
49.724
35.522
664
756
720/640
720/640
1280
1920
640
640
640
640
640
640
640
640
640
640
800
800
800
800
800
832
1024
59.940
50.000
60.000
60.000
60.000
60.000
56.420
70.090
70.090
85.080
85.080
59.940
72.809
75.000
85.008
66.667
56.250
60.317
72.188
75.000
85.061
74.550
43.479x2
484
574
480
480
720
1080
400
350
400
350
400
480
480
480
480
480
600
600
600
600
600
624
768
N/N
N/N
N/N
N/N
N/N
N/N
N/N
P/N
N/P
P/N
N/P
N/N
N/N
N/N
N/N
– / –
P/P
P/P
P/P
P/P
P/P
– / –
P/P
NTSC
PAL/SECAM
NTSC/DTV480i
DTV480P/VGA60Hz
DTV720P
HDTV/DTV1080i
NEC24K
TEXT70
TEXT70
TEXT85
TEXT85
VGA60
VGA72
VGA75
VGA85
MAC13
SVGA56
SVGA60
SVGA72
SVGA75
SVGA85
MAC16
XGA43i
VIDEO IN
VIDEO IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
SignalDefault Synchronizing Resolution (line) Frequency
Mode SystemHorizontal
(kHz)Remarks
680/681
model Vertical
(Hz)Horizontal Vertical H/V
(Continued) 
						

							CONTENTS46Others
SignalDefault Synchronizing Resolution (line) Frequency
Mode SystemHorizontal
(kHz)Remarks
680/681
model Vertical
(Hz)Horizontal Vertical H/V
(Continued)
 : full compatible : dot resizing display
 : simplified display : high resolution serial transfer control
XGA60
XGA70
XGA75
XGA85
MAC19
SXGA75-1
MAC21
SXGA60-1
SXGA85-1
SXGA43i
SXGA60-2
SXGA75-2
SXGA85-2
UXGA60
UXGA65
UXGA70
UXGA75
XGA 60Hz
XGA 70Hz
XGA 75Hz
XGA 85Hz
MAC-19”
SXGA 75Hz
MAC-21”
SXGA 60Hz
SXGA 85Hz
SXGA 43Hz interlace
SXGA 60Hz
SXGA 75Hz
SXGA 85Hz
UXGA 60Hz
UXGA 65Hz
UXGA 70Hz
UXGA 75Hz
48.363
56.476
60.023
68.677
60.197
67.500
68.681
60.000
85.938
46.433
63.981
79.976
91.146
75.000
81.130
87.500
93.750
60.004
70.069
75.029
84.997
74.872
75.000
75.062
60.000
85.002
43.436x2
60.020
75.025
85.024
60.000
65.000
70.000
75.000
1024
1024
1024
1024
1024
1152
1152
1280
1280
1280
1280
1280
1280
1600
1600
1600
1600
768
768
768
768
768
864
870
960
960
1024
1024
1024
1024
1200
1200
1200
1200
N/N
N/N
P/P
N/N
N/N
P/P
– / –
P/P
P/P
P/P
P/P
P/P
P/P
P/P
P/P
P/P
P/P
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
RGB IN
Notes
• If the mode identification does not define the mode described on the chart above, adjust to the
projection details.
• If the mode identification is carried out correctly, a normal display may be not obtained
depending on the signal frequency.
• SXGA, UXGA signals can be projected since the projector has simplified compatibility with them.
(However, letters and lines can be inequal or a part can be missing. Some signals may not be
projected at all.)
• Some computers may have output modes which are not compatible with this projector. Check
the compatibility of the connectors, signal levels, timing, and resolutions.
(Continued) 
						

							CONTENTS47Others
(Continued)
Signal assignment
D-SUB 15 pin shrinking terminal
Input Signal
Video signal
Analog 0.7V(p-p) 75W
Horizontal synchronizing signal
TTL level (positive/negative
polarity)
Vertical synchronizing signal
TTL level  (positive/negative
polarity)
Composite synchronizing signal
TTL level
Pin arrangements
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Video input (Red)
Video input (Green)
Video input (Blue)
N.C
GND
GND (Red)
GND (Green)
GND (Blue)
N.C
GND
GND
N.C
Horizontal synchronizing/
composite synchronizing signal
Vertical synchronizing signal
N.C
(Continued)
5
1
6
11 15
10 
						

							CONTENTS48Others
RGB signal defaults
(Continued)
Ver Sync
The following signals are factory set as defaults
in each mode. However, some computers may
have different timings than those in the chart.
Make the necessary adjustments if the picture
has flickers or is blurred.
Timing chart
Video Timing  (Horizontal)
Video
Hor SyncVideo Timing  (Vertical)
NEC24k
TEXT70
TEXT70
TEXT85
TEXT85
VGA60
VGA72
VGA75
VGA85
MAC13
SVGA56
SVGA60
SVGA72
SVGA75
SVGA85
MAC16
XGA60
XGA70
XGA75
XGA85
MAC19
640 x 400
640 x 350
640 x 400
640 x 350
640 x 400
640 x 480
640 x 480
640 x 480
640 x 480
640 x 480
800 x 600
800 x 600
800 x 600
800 x 600
800 x 600
823 x 624
1024 x 768
1024 x 768
1024 x 768
1024 x 768
1024 x 768
85
50
50
96
96
48
128
120
80
96
128
88
64
160
152
216
160
144
176
208
180
640
640
640
640
640
640
640
640
640
640
800
800
800
800
800
832
1024
1024
1024
1024
1024
59
14
14
32
32
16
24
16
56
64
24
40
56
16
32
40
24
24
16
48
20
64
96
96
64
64
96
40
64
56
64
72
128
120
80
64
64
136
136
96
96
96
848
800
800
832
832
800
832
840
832
864
1024
1056
1040
1056
1048
1152
1344
1328
1312
1376
1320
24.83
31.47
31.47
37.86
37.86
31.47
37.86
37.50
43.27
35.00
35.16
37.88
48.08
46.88
53.67
49.72
48.363
56.476
60.023
68.677
60.197
56.42
70.09
70.09
85.08
85.08
59.94
72.81
75.00
85.01
66.67
56.25
60.32
72.19
75.00
85.06
74.55
60.004
70.069
75.029
84.997
74.872
21.053
25.175
25.175
31.500
31.500
25.175
31.500
31.500
36.000
30.240
36.000
40.000
50.000
49.500
56.250
57.283
65.000
75.000
78.750
94.500
73.200
25
59
34
60
41
33
28
16
25
39
22
23
23
21
27
39
29
29
28
36
30
400
350
400
350
400
480
480
480
480
480
600
600
600
600
600
632
768
768
768
768
768
7
38
13
32
1
10
9
1
1
3
1
1
37
1
1
1
3
3
1
1
3
8
2
2
3
3
2
3
3
3
3
2
4
6
3
3
3
6
6
3
3
3
440
449
449
445
445
525
520
500
509
525
625
628
666
625
631
667
806
806
800
808
804 Video
ModeResolutionA
(Pixels)B
(Pixels)C
(Pixels)D
(Pixels)E
(Pixels)fh
(kHz)fv
(Hz)Clock
(MHz)G
(Lines)H
(Lines)I
(Lines)J
(Lines)K
(Lines)
D
AC
EB
J
G
KHI 
						

							CONTENTS49Others
Adjustments with RS-232C
Conditioning of the Projection Unit can also be
done by a computer via the RS-232C, as well
as by the remote control.
Mini DIN 8-pin
(Main Unit)
Interface format
Command list
(Continued)
Classification
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
RESIZE
RESIZE
RESIZE
RESIZE
RESIZE
CAMERA
CAMERA
CAMERA
CAMERA
CAMERA
CAMERA
ADJUST
ADJUST
Command
POF
PON
MOF
MON
AON
DOF
DON
FOF
FON
IN1
IN2
IN3
RS0
RS1
RS2
RS3
RS4
CW0
CW1
CS0
CS1
CO0
CO1
ARS
ARG
Meaning
Power OFF
Power ON
Video audio mute OFF
Video audio mute ON
Audio mute ON
Status display OFF
Status display ON
Freeze OFF
Freeze ON
Input (RGB)
Input (Video)
Input (Camera)
Resize reset
Resize 1
Resize 2
Resize 3
Resize 4
Automatic W/B OFF
Automatic W/B ON
Text mode OFF
Text mode ON
Overlaying mode OFF
Overlaying mode ON
Adjustment value reset
Adjustment value increase
7
6
3
4
1 2 58
RS-232C
9600 bps, No parity, Data length: 8 bit,
Stop bit: 1 bit
 STX (02h)   Command (3Byte)   ETX (03h)
One command only can be used in one
communication.
Command shall be composed of
alphanumeric characters of ASCII
description. Use only capital letters.
Acknowledge  ACK (06h)
Not Acknowledge  NAK (15h) Communication
method
Communication
for mat
Data format
Return value 1
2
3
4
Note
When commands are transmitted serially, keep more than 100 ms
intervals between the commands.
Meaning
Receiving data
Consent to send
Data set ready
Signal ground
Request to send
No connection
Sending data
No connection
Signal
RXD
CTS
DSR
GND
RTS
N.C
TXD
N.C
Pin No.
1
2
3
4
5
6
7
8 
						

							CONTENTS50Others
(Continued)
Classification
ADJUST
ADJUST
ADJUST
KEYSTONE
KEYSTONE
Image
Image
Image
Image
Image
Picture
Picture
Picture
Picture
Picture
Picture
Picture
Picture
Picture
Audio
Audio
Audio
Default
Default
Default
Command
ALF
AU P
ADW
PKA
PKS
PAT
PVP
PHP
PPH
PCK
VBR
VCL
VCN
VSH
VTN
VLB
VLG
VLR
CGN
VOL
VTR
VBS
LJP
LEN
LFR
Meaning
Adjustment value decrease
Adjustment value increase
Adjustment value decrease
Keystone automatic adjustment
Keystone manual adjustment
Panel automatic adjustment
Vertical position adjustment
Horizontal position adjustment
Phase adjustment
Clock adjustment
Brightness adjustment
Color adjustment
Contrast adjustment
Sharp adjustment
Tint adjustment
Blue level adjustment
Green level adjustment
Red level adjustment
Camera gain adjustment
Volume adjustment
Treble adjustment
Bass adjustment
Japanese display setting
English display setting
French display setting
Classification
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Default
Save
Save
Command
LGR
LIT
LSP
LP0
PJ0
PJ1
PJ2
PJ3
KR0
KR1
KV0
KV1
KV2
KV3
KV4
KV5
KV6
KV7
KV8
KV9
KVA
MO0
MO1
DRS
DSV
Meaning
German display setting
Italian display setting
Spanish display setting
Portuguese display setting
Floor-mounted front projection
Floor-mounted rear projection
Ceiling-mounted front projection
Ceiling-mounted rear projection
RGB input mode (RGB)
RGB input mode (Y/Pb/Pr)
Video signal mode (Automatic)
Video signal mode (60/NTSC/JAPAN)
Video signal mode (60/NTSC/3.58)
Video signal mode (60/NTSC/4.43)
Video signal mode (60/PAL/3.58)
Video signal mode (60/PAL/4.43)
Video signal mode (50/NTSC/3.58)
Video signal mode (50/NTSC/4.43)
Video signal mode (50/PAL/3.58)
Video signal mode (50/PAL/4.43)
Video signal mode (50/SECAM/4.43)
OSD mute OFF
OSD mute ON
Adjustment value preset
Adjustment value saving