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PDF MP8745 Data sheet ( Hoja de datos )
| Número de pieza | MP8745 | |
| Descripción | Multimedia Projector Service Manual | |
| Fabricantes | 3M | |
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Service Manual
MP8670/8745/8755/8770 Multimedia
Projector
Warranty and Limited Remedy. This product will be free from defects in material and manufacture for a period of
two years from the date of purchase. 3M MAKES NO OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. If this product is defective
within the warranty period stated above, your exclusive remedy shall be, at 3M’s option, to replace or repair the 3M product or
refund the purchase price of the 3M product. _______________________________________________________________
Limitation of Liability. Except where prohibited by law, 3M will not be liable for any loss or damage arising from this
3M product, whether direct, indirect, special, incidental or consequential regardless of the legal theory asserted.
3M Visual Systems Division
6801 River Place Boulevard
Austin, Texas 78726-9000
E. P. S. Service Documentation
Copyright © 2000, 3M IPC. All Rights Reserved.
78-6970-8985-8
1 page  
3M™ Multimedia Projector MP8670/8745/8755/8770
Adjustments
1-5. Cleaning LCD Panels.
Dust particles can accumulate on the glass covering the LCD panels causing spots on the projection
image. Periodic cleaning is necessary to maintain a high quality projection image.
1-5-1. Test for Dust on the LCD Panels
1. Turn the main power switch to the on
position.
Note: Input needed to access Menu
2. On the remote control:
• Press the Menu button.
• Select the Image menu.
• Select Blank from the Image menu and
change the color to white.
• Press the Menu button to remove the
menu window.
• Press Blank on the remote control
3. Look for dust particles on the projection
image.
4. Remove any dust from the outside of the
projection lens with a lint-free cloth. If dust
remains on the projection image, the LCD’s
and the air filter need to be cleaned.
5. The cleaning procedure that follows
requires removal of the LCD module
assembly. A convergence check must be
completed after cleaning is complete.
1-5-2. Cleaning Dust from LCD’s
If dust particles can be seen on your projection
image:
1. Turn off the main power switch of the
projector and unplug the power cord.
2. Use a dust blower or compressed air to blow
air on all three LCD panels. Do not exceed
40 PSI.
3. If dust is still visible wipe the LCD panels
with a chamois swab or a lint-free cloth
from the 3M LCD cleaning kit.
ü Important
Use extreme care when cleaning any optics
device. Special gelatin coatings can be
scratched very easily.
4. Use a lighted magnifier to check for streaks.
If dust still remains complete steps 1-4 again.
Copyright © 2000, 3M IPC. All Rights Reserved.
1-3
5 Page 
3M™ Multimedia Projector MP8670/8745/8755/8770
1-7-4. S/H Timing Adjustment
Adjustment Preparations
1. Use a SVGA (MP8670) or XGA (MP8745), VESA
(60) timing signal to input a 0.7V p-p cross hatch
signal.
2. Use H-PHASE in the Adjustment Menu to adjust the
cross hatch pattern so it is most clearly visible.
3. Reset S/H.
• Position the cursor on S/H in the adjustment Menu
and Press the RESET key.
Adjustment Procedure
1. Use S/H – S/H Timing in the Adjustment Menu until
the Vertical Stripes in the cross hatch pattern are the
most clearly visible.
2. Check to see that the vertical jitter is within the range
of -16 < A < +16 at the value obtained from step 1.
3. If there is jitter, change S/H – S/H POL, in the
adjustment Menu, from POSI to NEGA or NEGA to
POSI.
4. Return S/H – S/H TIMING to the value obtained in
step 1.
Adjustments
Alignment
2
Copyright © 2000, 3M IPC. All Rights Reserved.
1-9
11 Page | ||
| Páginas | Total 60 Páginas | |
| PDF Descargar | [ Datasheet MP8745.PDF ] | |
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