Canon projector LV7255 User Manual

							52
6. Maintenance
6. Connect the supplied power cord, turn on the Main Power switch and turn on the projector.7. Finally, select the menu 
→ [Factory default] → [Lamp counter] to reset the lamp usage hours.
NOTE: When the lamp exceeds 2100 hours (up to 3100 hours in Quiet mode)\
 of service, the projector cannot turn on and themenu is not displayed.If this happens, press the INFO. button on the remote control for ten se\
conds to reset the lamp clock back to zero.
When the lamp time clock is reset to zero, the LAMP indicator goes out. 
						

							53
7. Appendix

 Troubleshooting
This section helps you resolve problems you may encounter while setting up or using the projector.
Indicator Condition
Projector Condition Note
Off
Blinking light
Steady light Green
Orange
Green
Orange 0.5 sec On,
0.5 sec Off
2.5 sec On,
0.5 sec Off
0.5 sec On,
0.5 sec Off
The main power is off
The projector is getting ready to turn on.
Off Timer is enabled.
The projector is cooling down.
The projector is turned on.
The projector is in Standby. –
W
ait for a moment.
–
W ait for a moment.
–
–
W ARNING Indicator
Indicator Condition
Projector Condition Note
Off
Blinking light
Steady light Red
Green
Orange 1 cycle (0.5 sec On,
2.5 sec Off)
2 cycle (0.5 sec On, 0.5 sec Off)
4 cycle (0.5 sec On, 0.5 sec Off)
6 cycle (0.5 sec On, 0.5 sec Off) Normal
Lamp cover error or lamp housing error
T
emperature error
Fan error
Lamp error
Re-firing the lamp (The projector is cool-
ing down.)
Key lock is On. –
Replace the lamp cover or lamp
housing correctly.
The projector is overheated. Move
the projector to a cooler location.
Fans will not work correctly.
Lamp fails to light. Wait a full
minute and then turn on again.
The projector is re-firing.
W
ait for a moment.
Y ou have pressed cabinet button
when Key lock is On.
LAMP Indicator
Indicator Condition Projector Condition Note
Off
Blinking light
Steady light Normal
Lamp has reached its end of life. Lamp
replacement message will be displayed.
Lamp has been used beyond its limit. The
projector will not turn on until the lamp is
replaced.
Lamp mode is set to Quiet mode
Red
Red
Green –
Replace the lamp.
Replace the lamp.
–
Indicator Messages
POWER Indicator
MENU
BACKW ARNINGPOWER
AUTO PC
INPUT
VOL-VOL+
LAMP
W ARNING Indicator
POWER Indicator LAMP Indicator 
						

							54
7. Appendix
Common Problems & Solutions (See also POWER/WARNING/LAMP Indicator on page  53 .)
Does not turn on
Will turn off
No picture
Picture suddenly
becomes dark
Color tone or Color
balance is unusual
Image isn’t square to
the screen
Picture is blurred
Image is scrolling
vertically, horizontally
or both
Remote control does
not work
Indicator is lit or
blinking
Cross color in RGB
mode
Whenever the projector
is turned on, a message
prompting you to clean
the filter will be dis-
played •
Check that the power cord is plugged in and that the power button on the\
 projector cabinet or the remote
control is on. See pages 
19  and  20 .
• Ensure that the lamp cover is installed correctly. See page 
51 .
• Check to see if the projector has overheated or the lamp usage exceeds 2\
100 hours (up to 3100 hours : Quiet
mode). If there is insufficient ventilation around the projector or if the room where you’re presenting is par-
ticularly warm, move the projector to a cooler location.
• The lamp may fail to light. Wait a full minute and then turn on the power again.
• The lamp has reached the end of its usable life. Replace the lamp.
• Ensure that the Power management or Off timer is off. See page 
45 .
• Use the INPUT button to select your source (Computer 1, Computer 2, Video or S-Video). See page 
22 . If there
is still no picture, press the button again.
• Ensure your cables are connected properly.
• Use menus to adjust the brightness and contrast. See page 
40 .
• Remove the lens cap.
•
Reset the settings or adjustments to factory preset levels using the “Factory default” in the Menu. See page  47 .•Enter your registered Password if the Password function is enabled. See \
page  44 .
• When using with a notebook PC, be sure to connect between the projector \
and the notebook PC before turning
on the power to the notebook PC. In most cases signal cannot be output f\
rom RGB output unless the notebook
PC is turned on after connecting with the projector.
*If the screen goes blank while using your remote control, it may be the \
result of the computers screen-
saver or power management software.
• See also the next page.
• When  the room where you re presenting is particularly warm  → Move the projector to a cooler location.
• Check if an appropriate color is selected in Screen color. If so, sele\
ct an appropriate option. See page 
39 .
• Adjust Color balance in Image adjustment. See page 
40 .
• Reposition the projector to improve its angle to the screen. See page 
23 .
• Use the Keystone correction function to correct the trapezoid distortion\
. See page 
25 .
• Adjust the focus. See page 
24 .
• Reposition the projector to improve its angle to the screen. See page 
23 .
• Ensure that the distance between the projector and screen is within the \
adjustment range of the lens. See page
12 .
• Condensation may form on the lens if the projector is cold, brought into\
 a warm place and is then turned on.
Should this happen, let the projector stand until there is no condensati\
on on the lens.
• Use the INPUT button to select your source (Computer 1, Computer 2, Video or S-Video). See page 
22 .
• Adjust the computer image manually with the Horizontal/Vertical position in the “Advanced settings  → Page
2”. See page 
45 .
• Install new batteries.See page 
10 .
• Make sure there are no obstacles between you and the projector.
• Stand within 7 m (22 feet) of the projector. See page 
10 .
• See the POWER/WARNING/LAMP Indicator on page 
53 .
• Press the AUTO PC button on the projector cabinet or the remote control.\
 See page 
27 .
• When “Off” is selected in “Auto PC adjustment”, adjust the c\
omputer image manually with “Clock” and “Track-
ing” in “Advanced settings”  → “Page 2” in the menu. See pages 
45  and  46 .
• Clean or replace the filter and then reset the Filter counter. See page 
47 .
Problem Check These  Items
For more information contact your dealer. 
						

							55
7. Appendix
If there is no picture, or the picture is not displayed correctly.
• Power on process for the projector and the PC.
Be sure to connect the RGB cable between the projector and the computer before turning on the computer.
There are some notebook PCs, which do not output signal unless there is a projector or monitor conn\
ected first.
NOTE: You can check the horizontal frequency of the current signal in the projector’s menu under Information.  If it reads
“0kHz”, this means there is no signal being output from the computer. See page  46  or go to next step.
•Enabling the computer’s external display.
Displaying an image on the notebook PC’s screen does not necessarily mean it outputs a signal to the projec-
tor.  When using a PC compatible laptop, a combination of function keys will enable/disable the external display.
Usually, the combination of the ‘Fn” key along with one of the 12 function keys gets the external display to come
on or off.  For more details, refer to your computer’s owner’s manual.
• Non-standard signal output from the computer
If the output signal from a notebook PC is not an industry standard, the\
 projected image may not be displayed
correctly. Should this happen, deactivate the notebook PC’s LCD screen when the projector display is in use.
Each notebook PC has a different way of deactivate/reactivate the local LCD screens as described in the
previous step. Refer to your computer’s documentation for detailed information.
• Image displayed is incorrect when using a Macintosh
When using a Macintosh with the projector, set the DIPswitch of the Mac adapter (not supplied with the projec-
tor) according to your resolution. After setting, restart your Macintosh for the changes to take affect.
For setting display modes other than those supported by your Macintosh and the projector, changing the DIP
switch on a Mac adapter may bounce an image slightly or may display noth\
ing. Should this happen, set the DIP
s witch to the 13” fixed mode and then restart your Macintosh. After that, restore the DIP switches to a
displayable mode and then restart the Macintosh again.
NOTE: A Video Adapter cable manufactured by Apple Computer is needed for\
 a PowerBook which does not have a mini D-Sub
15-pin connector.
• Mirroring on a PowerBook
* When using the projector with a Macintosh PowerBook, output may not be set to 1024 x 768 unless “mirror-
ing” is off on your PowerBook. Refer to owner’s manual supplied with your Macintosh computer for mirroring.
• Folders or icons are hidden on the Macintosh screen
Folders or icons may not be seen on the screen. Should this happen, select [View]  → [Arrange] from the Apple
menu and arrange icons. 
						

							56
7. Appendix
 Specifications
This section provides technical information about the projectors performance.
Model Number LV-7255
Optical
LCD Panel 0.7 p-Si TFT active-matrix with Micro Lens Array (Aspect 4:3)
Resolution 1024  
 768 pixels* native, up to UXGA with scaling technology
Lens Manual zoom and manual focus
F1.6 - 2.5   f=17.7 - 28.3 mm
Lamp 200W DC lamp (150W Quiet mode)
Brightness 2500 lm
Uniformity 85%
Image Size (Diagonal) 25 to 300
Projection Distance 0.9 m to 7.6 m / 3.1 to 25.0
Projection Angle Tele: 1.86 ° - 1.93 °/ Wide: 1.21 ° - 1.24 °
Ke ystone Correction +/- 30 ° Ve rtical (auto)
Electrical
Inputs 2 RGB/Component (D-Sub 15 Pin), 1 S-Video (DIN 4 Pin), 1 Video (RCA), 2 (L/R) RCA Audio,
1 Stereo Mini Audio, 1 Service Port (Mini DIN 8 Pin)
Outputs 1 RGB (D-Sub 15 Pin), 1 Stereo Mini Audio
Video Compatibility NTSC, NTSC4.43, PAL, PAL-60, PAL-N, PAL-M, SECAM,
1125i (1080i), 750p (720p), 525p (480p), 525i (480i) / 60Hz
1125i (1080i), 625p (576p), 625i (576i) / 50Hz
Scan Rate Horizontal: 15 kHz to 100 kHz (RGB: 24 kHz or over) Vertical: 50 Hz to 120 Hz
Video Bandwidth RGB: 80 MHz (-3dB)
Color Reproduction 16.7 million colors simultaneously, Full color
Horizontal Resolution NTSC / NTSC4.43/PAL/PAL-M/PAL-N/PAL60/YCbCr: 540 TV lines SECAM: 300 TV lines
RGB: 1024 dots (H)
768 dots (V)
External Control RS232, IR
Sync Compatibility Separate Sync / Composite Sync / Sync on G
Built-in Speaker 1W (monaural)
Po wer Requirement 100 - 240V AC, 50 / 60 Hz
Input Current 3.0 - 1.5A
Po wer Consumption 8W in Standby mode /
275W in Lamp Normal mode / 210W in Lamp Quiet mode
* Effective pixels are more than 99.99%. 
						

							57
7. Appendix
Mechanical
Installation Orientation Front / Rear / Ceiling mounted / Rear, Ceiling mounted
Dimensions 11.7 (W) 
4.3 (H) 
10.8 (D) / 296mm (W) 
110mm (H) 
273mm (D)
(not including protrusions)
W eight 7.3 lbs / 3.3 kg
F an Noise 35 dB (Normal mode), 30dB (Quiet mode)
Environmental Considerations Operational Temperatures : 41 ° to 95 °F (5 ° to 35 °C),
20% to 80% humidity (non-condensing)
Storage Temperatures : 14 ° to 122 °F (-10 ° to 50 °C),
20% to 80% humidity (non-condensing)
Regulations
F or United States:
UL Approved (UL 60950-1)
Meets FCC Class B requirements
For Canada:
UL Approved (CSA 60950-1)
Meets DOC Canada Class B requirements
For Australia/New Zealand:
Meets AS/NZS CISPR.22 Class B
For Europe:
Meets EMC Directive (EN55022, EN55024, EN61000-3-2, EN61000-3-3)
Meets Low Voltage Directive (EN60950-1)
The specifications are subject to change without notice. 
						

							58
7. Appendix
 Cabinet Dimensions
L  AUDIO IN  R
AUDIO OUTL  AUDIO IN  RSERVICE PORT AUDIO INMONO
MONO
ANALOG IN -
1 ANALOG IN-
2VIDEO
 IN
S -
VIDEO
IN
PUSH
MENU
BACKW ARNINGPOWERAUTO PCINPUT
VOL-VOL+LAMP
296 (11.7)
273 (10.8)
73 (2.9)
110 (4.3)
64 (2.5)
Lens center Lens center
Unit: mm (inch) 
						

							59
Mini D-Sub 15 Pin Connector
 Pin Assignments of D-Sub ANALOG Input Connector
Signal Level
Video signal : 0.7Vp-p (Analog)
Sync signal : TTL level
11
15 12 14 13 6
54321
10 7 98
7. Appendix
* Only ANALOG-1 input connector supported.
Pin No. RGB Signal (Analog) YCbCr Signal
1 Red Cr
2Green or Sync on Green Y
3Blue Cb
4Ground
5Ground
6Red Ground Cr Ground
7Green Ground Y Ground
8Blue Ground Cb Ground
9No Connection
10 Sync Signal Ground
11 Scart Sync*
12 Bi-directional DATA (SDA)*
13Horizontal Sync or Composite Sync
14 Vertical Sync
15 Data Clock* 
						

							60
7. Appendix
 Compatible Input Signal List
Signal Resolution Frequency H. Refresh Rate
( Dots ) ( kHz ) ( Hz )
NTSC – 15.73 60
PAL– 15.63 50
PAL60 – 15.73 60
SECAM – 15.63 50
VESA 640 
480 31.47 59.94
IBM 640 
480 31.47 60
MAC 640 
480 34.97 66.67
MAC 640 
480 35 66.67
VESA 640 
480 37.86 72.81
VESA 640 
480 37.5 75
IBM 640 
480 39.38 75
VESA 640 
480 43.27 85.01
IBM 720 
350 31.47 70.09
IBM 720 
350 39.44 87.85
IBM 720 
400 39.44 87.85
VESA 800 
600 35.16 56.25
VESA 800 
600 37.88 60.32
VESA 800 
600 48.08 72.19
VESA 800 
600 46.88 75
VESA 800 
600 53.67 85.06
MAC 832 
624 49.73 74.55
VESA 1024 
768 35.5 43 Interlaced
VESA 1024 
768 48.36 60
VESA 1024 
768 56.47 70.07
MAC 1024 
768 60.24 74.93
VESA 1024 
768 60.02 75.03
VESA 1024 
768 68.68 85
# VESA 1152 
864 67.5 75
#M AC 1152
870 68.68 75.06
# SGI 1152 
900 71.74 76.05
# VESA 1280 
960 60 60
# VESA 1280 
1024 63.98 60.02
#M AC 1280
1024 69.89 65.18
# VESA 1280 
1024 79.98 75.03
# VESA 1280 
1024 91.15 85.02
# SXGA+ 1400 
1050 65.32 59.98
#HDTV (1080p)1920 
1080 67.5 60 Progressive
#SDTV(576i)(625i)– 15.6 50
#SDTV(576p)(625p)–31.5 50
#HDTV (1080i)(1125i)1920
1080 33.75 60 Interlace
#HDTV (1080i)(1125i)1920 
1080 28.13 50 Interlace
#HDTV (720p)(750p)1280 
720 45 60 Progressive
#SDTV (480p)(525p)– 31.47 59.94 Progressive
#VESA 1600 
1200 75.0 60
# VESA 1600 
1200 81.25 65
# VESA 1600 
1200 87.5 70
# VESA 1600 
1200 93.75 75
DVD YCbCr – 15.73 59.94  Interlaced
DVD YCbCr – 15.63 50  Interlaced
# : Images in above flagged with # are compressed with scaling technology.
NOTE: Some composite sync signals may not be displayed correctly.
Signals other than those specified in the table above may not be display\
ed correctly. If this should happen, change the refreshrate or resolution on your PC. Refer to Display Properties help section \
of your PC for procedures.
UXGA (1600 x 1200) is supported for separate sync signal only. 
						

							61
7. Appendix
25
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
176
180
190
200
210
220
230
240
250
260
270
280
290
300 51
61
81
102
122
142
163
183
203
224
244
264
284
305
325
345
358
366
386
406
427
447
467
488
508
528
549
569
589
610 x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x38
46
61
76
91
107
122
137
152
168
183
198
213
229
244
259
268
274
290
305
320
335
351
366
381
396
411
427
442
457 -
-
1.0m
(3.2) 1.2m
(4.1) 1.5m
(4.9) 1.7m
(5.8) 2.0m
(6.6) 2.3m
(7.4) 2.5m
(8.3) 2.8m
(9.1) 3.0m
(9.9) 3.3m
(10.8) 3.5m
(11.6) 3.8m
(12.4) 4.0m
(13.3) 4.3m
(14.1) 4.4m
(14.6) 4.5m
(14.9) 4.8m
(15.8) 5.0m
(16.6) 5.3m
(17.5) 5.5m
(18.3) 5.8m
(19.1) 6.0m
(20.0) 6.3m
(20.8) 6.6m
(21.6) 6.8m
(22.5) 7.1m
(23.3) 7.3m
(24.1) 7.6m
(25.0) 0.9m
(3.1) 1.1m
(3.8) 1.5m
(5.1) 1.9m
(6.4) 2.3m
(7.7) 2.7m
(9.0) 3.1m
(10.3) 3.5m
(11.6) 3.9m
(12.9) 4.3m
(14.2) 4.7m
(15.5) 5.1m
(16.8) 5.5m
(18.1) 5.9m
(19.4) 6.3m
(20.7) 6.7m
(22.0) 6.9m
(22.8) 7.1m
(23.3) 7.5m
(24.6) -
-
-
-
-
-
-
-
-
-
- 34cm
(1.1)
41cm (1.4)
55cm (1.8)
69cm (2.3)
82cm (2.7)
96cm (3.2)
110cm (3.6)
123cm (4.1)
137cm (4.5)
151cm (5.0)
165cm (5.4)
178cm (5.9)
192cm (6.3)
206cm (6.8)
219cm (7.2)
233cm (7.7)
241cm (8.0)
247cm (8.1)
261cm (8.6)
274cm (9.1)
288cm (9.5)
302cm (10.0)
315cm (10.4)
329cm (10.9)
343cm (11.3)
357cm (11.8)
370cm (12.2)
384cm (12.7)
398cm (13.1)
411cm (13.6) 4cm
(0.1) 5cm
(0.2) 6cm
(0.2) 8cm
(0.3) 9cm
(0.3)
11cm (0.4)
12cm (0.4)
14cm (0.5)
15cm (0.5)
17cm (0.6)
18cm (0.6)
20cm (0.7)
21cm (0.7)
23cm (0.8)
24cm (0.8)
26cm (0.9)
27cm (0.9)
27cm (0.9)
29cm (1.0)
31cm (1.0)
32cm (1.1)
34cm (1.1)
35cm (1.2)
37cm (1.2)
38cm (1.3)
40cm (1.3)
41cm (1.4)
43cm (1.4)
44cm (1.5)
46cm (1.5) 23
28
37
46
55
64
73
83
92
101
110
119
129
138
147
156
162
165
174
184
193
202
211
220
229
239
248
257
266
275 51
61
81
102
122
142
163
183
203
224
244
264
284
305
325
345
358
366
386
406
427
447
467
488
508
528
549
569
589
610 x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
29
34
46
57
69
80
91
103
114
126
137
149
160
171
183
194
201
206
217
229
240
251
263
274
286
297
309
320
331
343
Screen size at 4:3
aspect ratioW x D (cm) Zoomed projection
distance
Max. Min. H1
H2Screen size at 16:9
aspect ratioW x D (cm)
  Relationship between Screen Size and Projection distance