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Barco R9000901 Replacement Manual
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Barco R9000901 Replacement Manual

Barco R9000901 Replacement Manual

Replacement of a picture tube
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Replacement of a picture tube
Attention
How to access the
picture tubes for re-
moval
How to open top cover
Illustration how to open
top cover
No cover support
Replacement of a picture tube
GRAPHICS
808S
WARNING: CRT HANDLING
The picture tube encloses a high vacuum and care must be taken
not to bump or to scratch the picture tube as this may cause the
tube to implode resulting in personal injury and property damage.
Shatterproof goggles must always be worn by individuals while
handling the CRT or installing it in the projector. Do not handle the
CRT by the neck.
The following parts of the projector have to be removed to gain access to the picture
tubes: - top cover (total removal)
- top cover plate, covering the picture tube assembly.
To open the top cover, proceed to the following step:
Step
1
Power down the projector and pull out the power cord from the wall outlet.
2
Turn the lock screw with a screwdriver or a coin a half turn counter clock-
wise
3
Lift up the top cover and carefully pivot it vertically (attention: no cover
support provided).
The top cover is not secured with an incorporated support. If a complete turn over is
required, we advise to remove the top cover totally.
Action
3
to open
R9000901
R9000908
2
to be continued on next page
Date: 06/02/98
1

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Summary of Contents for Barco R9000901

  • Page 1 GRAPHICS R9000901 808S R9000908 Replacement of a picture tube Attention WARNING: CRT HANDLING The picture tube encloses a high vacuum and care must be taken not to bump or to scratch the picture tube as this may cause the tube to implode resulting in personal injury and property damage.
  • Page 2 GRAPHICS R9000901 808S R9000908 How to remove top To remove the top cover, proceed to the following step: cover Step Action Stand behind the projector Grip the top cover by the front and turn it until it stands vertical. Hit the bottom of the cover on the right side to dislocate the hinge joint.
  • Page 3 GRAPHICS R9000901 808S R9000908 Removing the Picture tube cover Picture tube cover The picture tube cover assembly exist of: assembly - a bridge metallic plate, securing the position of the three CRT blocks in the main frame. - a metallic cover, covering the three CRT units in the main frame for the fixation metallic plate: pot nut runner of 8mm &...
  • Page 4 GRAPHICS R9000901 808S R9000908 Removing the Picture tube cover How to remove the To remove the cover assembly, continue with the following steps: bridge metallic plate Step Action Remove the 6 screws (nut driver 7mm) securing the CRT blocks on the plate.
  • Page 5 GRAPHICS R9000901 808S R9000908 Removing the Lens of the defective picture tube Necessary tool Pot nut runner of 8 mm Lens The lens is fixed to the main frame by 4 screws, 2 on top and 2 on bottom of the lens.
  • Page 6 GRAPHICS R9000901 808S R9000908 Removing the picture tube from its frame How to remove the The picture tube unit is fixed to the main frame in two ways: picture tube out of its frame - Mechanical: two long bolts secure the position of the picture tube support in the frame.
  • Page 7 GRAPHICS R9000901 808S R9000908 Removing the picture tube from its frame How to disconnect the Disconnect the units as described below: Units on the neck of the picture tube Step Action Pull out focus connector on top of unit. Pull out on main frame the deflection connector.
  • Page 8 GRAPHICS R9000901 808S R9000908 Removing the picture tube from its frame How to remove the To remove the picture tube unit out of main frame, proceed as follows: picture tube unit me- chanical out of the Step Action main frame Remove the two rods with screwed thread at the end.
  • Page 9 GRAPHICS R9000901 808S R9000908 Removing the Picture Tube Unit from its support Necessary tool Pot nut runner of 8 mm How to remove the picture tube from its The CRT Unit is mounted on its support by means of four bolts. To separate the CRT...
  • Page 10 GRAPHICS R9000901 808S R9000908 Removing the The Units on the picture tube are clamped on the neck of the picture tube by means Picture tube units of a gear clamp. Follow the next steps to remove: from the neck Gear clamp...
  • Page 11 GRAPHICS R9000901 808S R9000908 Mounting the Picture Tube on its support Necessary tool Pot nut runner of 8 mm How to mount the The CRT Unit is mounted on its support by means of four bolts. To mount the CRT...
  • Page 12 GRAPHICS R9000901 808S R9000908 The Units on the picture tube are clamped on the neck by means of a gear clamp. Mounting the units on the neck of the Follow the next steps to install: picture tube Step Action Slide the two units Focus and Deflection unit,...
  • Page 13 GRAPHICS R9000901 808S R9000908 Picture tube alignment Before starting the alignment of the new picture tube, the projector must warm up for at least 15 minutes at a medium brightness and contrast. Picture tube alignment 1 or 2 picture all picture tubes...
  • Page 14 GRAPHICS R9000901 808S R9000908 a<b lower the Brightness and c<d put the Contrast on its max with the RCU Set the midpoint focusing on 0 adjust the 2-pole magnets rings by rotating one or both up to a point where 'shading' of both sides of...

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R9000908