18
2. Color Wheel Delay Alignment
Equipment:
Battery Biased Silicon PIN Detector
Oscilloscope
Probe
Procedure:
1. Probe impedance matches 50 ohm
2. Open Factory OSD, and select color wheel delay item
3. Leave the image pure red (DMD red curtain)
4. Put the detector on the screen that red image was projected.
5. Watch the oscilloscope and notice the square waveform
6. Use the
and
key to increment or decrement the color wheel delay value
7. No matter the waveform is square or not, let the waveform was lagged first
8. Then increment or decrement the value to let the waveform to be square
9. Do not adjust too much, let the signal get ahead, if it happens, go back to step 7
and do it again.
10. Change the input to pure blue and repeat the above procedures again.
3. PC Color Alignment Procedure
Equipment:
Pattern generator
Procedure:
1. Connect power, D-sub, into projector.
2. Change pattern generator to pattern 43 5-DISC.
3. Light on projector90
4. Enter factory mode.
5. Choose ADC Brightness item to Press.
6. Choose ADC Contrast item to Press.
7. Change pattern generator to pattern 32 gray bar.
8. See if any gray level was abnormal, if the abnormality happened, went back to
step 4 and then redid it again.
9. Quit factory mode, after above adjustments finished.
Lag
Exact
Ahead
Summary of Contents for RD-JT51
Page 13: ...13 2 JT50 52 ...
Page 14: ...14 7 Packaging Description 1 JT51 ...
Page 15: ...15 2 JT50 52 ...
Page 16: ...16 8 Appearance Description ...
Page 53: ...ëí 5 PFC BOARD 6 DC DC BOARD ...
Page 54: ...ëì JT50 52 1 Final Assembly Trouble Shooting Guide ...
Page 55: ...ëë ...
Page 56: ...ëê 2 Engine Assembly Trouble Shooting Guide ...
Page 58: ...ëè 4 Power Supply Trouble Shooting Guide PFC BOARD DX850 DC DC BOARD ...
Page 59: ...5ç 5 DMD Block Trouble Shooting Guide ...
Page 60: ...êð ...
Page 74: ...éì Step 7 Download finished Step 8 Turn off the power switch ...
Page 81: ......