3M Digital Projector X20 Operators Guide

60
Maintenance
Inside of the projector
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Caring for the lens
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Troubleshooting
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Related messages
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62
Troubleshooting
Regarding the indicator lamps
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POWER
indicator LAMP 
indicator TEMP 
indicator Description
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Orange
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offThe projector is in a standby state.
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Blinking
In
Green
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offThe projector is warming up.
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Green
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offThe projector is in an...

63
Troubleshooting
Regarding the indicator lamps (continued)
POWER
indicator LAMP 
indicator TEMP 
indicator Description
Blinking In
Red
or
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Red
7XUQHG off /LJKWLQJ
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Red
There is a possibility that the interior portion 
has become heated.
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64
Troubleshooting
Phenomena that may be easy to be mistaken for machine defects
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Phenomenon Cases not involving a machine defectReference
page
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The electrical power cord is not plugged in.
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The main power source has been interrupted during 
operation such as by a power outage (blackout), etc....

65
Phenomena that may be easy to be mistaken for machine defects (continue\
d)
Phenomenon Cases not involving a machine defectReferencepage
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The brightness is adjusted to an extremely low level.
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The computer cannot detect the projector as a plug 
and play monitor.
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The BLANK...

66
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67
Ditial Projector X20
Operator's Guide   TECHNICAL
Example of computer signal
Resolution (H x V)H. frequency (kHz)V. frequency (Hz)RatingSignal mode
720 x 40037.985.0VESATEXT
640 x 4803 .559.9VESAVGA (60Hz)
640 x 48037.972.8VESAVGA (72Hz)
640 x 48037.575.0VESAVGA (75Hz)
640 x 48043.385.0VESAVGA (85Hz)
800 x 60035.256.3VESASVGA (56Hz)
800 x 60037.960.3VESASVGA (60Hz)
800 x 60048. 72.2VESASVGA (72Hz)
800 x 60046.975.0VESASVGA (75Hz)
800 x 60053.785.VESASVGA (85Hz)
832 x 62449.774.5Mac...

68
Initial set signals
Initial set signals
The  following  signals  are  used  for  the  initial  settings.  The  signal  timing  of  some 
computer  models  may  be  different.  In  such  case,  adjust  the  items  V  POSITION 
and H POSITION in the IMAGE menu. 
 
Computer/Signal
Horizontal signal timing (μs)Computer/Signal
Vertical signal timing (lines)
(A)(B)(C)(D)(a)(b)(c)(d)
TEXT2.03.020.3.0TEXT342400
VGA (60Hz)3.8.925.40.6VGA (60Hz)2334800
VGA (72Hz).34. 20.30.8VGA...

69
Connection to the ports
ACOMPUTER IN1, BCOMPUTER IN2
 D-sub  5pin mini shrink jack
(1) for Computer signal
•  Video signal: RGB separate, Analog, 0.7Vp-p, 75Ω 
terminated (positive)
• H/V. sync. Signal: TTL level (positive/negative)
• Composite sync. Signal: TTL level
PinSignalPinSignal
Video Red0Ground
2Video Green(No connection)
3Video Blue2A: SDA (DDC data)
B: (No connection)4(No connection)
5Ground3H. sync / Composite sync.
6Ground Red4V. sync.
7Ground...