background image

Date: 15/05/2000

Replacement of a picture tube

Cine

 

7

1

R9002380

R9002389

Replacement of a picture tube

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.

WARNING

TURN OFF THE PROJECTOR AND UNPLUG THE POWER CORD

BEFORE PROCEEDING TO THE REPLACEMENT OF A PICTURE TUBE

Содержание Cine 7

Страница 1: ...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 WARNING TURN OFF THE PROJECTOR AND UNPLUG THE POWER CORD BEFORE PROCEEDING TO THE REPLACEMENT OF A PICTURE TUBE ...

Страница 2: ...fective picture tube A Getting Access to the picture tube 1 Remove the top cover of the projector please refer to the projector installation manual 2 Loosen the two locking screws of the module frame 3 Open the module frame by pivoting it towards the front of projector Locking screws Module frame Module frame ...

Страница 3: ... ground plug C of the defective picture tube Disconnect ground connection D of the CRT drive module by removing screw E on main frame Loosen the gear clamp of the Picture tube drive module F Carefully pull the module D back to slide the CRT socket off from the end of the CRT Important Deflection Unit can be slid off from the CRT neck after the picture tube has been mechanical discon nected from ma...

Страница 4: ...etal screening B off the end of the CRT Slide the deflection unit off from the end of the CRT Remove picture tube from projector 6 Removing the Picture tube Disconnect the temperature sensor B on top of the picture tube heatsink by removing fixation screw Support the CRT unit by hand Remove the two fixation bolts A holding the CRT unit to main frame To remove the picture tube tilt the CRT a little...

Страница 5: ... 4 3 Slide the Stigmator unit on the neck of the picture tube Secure the position of the unit by tightening the gear clamp screw see pictures on page 4 C Installing picture tube in main frame see pictures on page 4 4 Tilt the picture tube a little downwards and place it correctly on its two clips Push the bottom of the tube face into the two clips 5 Tilt up the picture tube until the face fits the...

Страница 6: ...until the horizontal lines of the crosshatch are levelled on the screen Tighten now carefully the screw of the gear clamp of the deflection yoke Center the picture on the CRT faceplate refer to explanation Raster centering Note alignment of the stigmators will change again its position if so realign raster centering A Replacement of a complete set of three tubes Adjust the 2 pole and 4 pole magnet...

Страница 7: ...nic focus by adjusting the left arrow key of the RCU for the respective CRT Adjust the 2 pole magnets rings by rotating one or both up to a point where the shading of both sides of the vertical and horizontal lines is equal see figure Realign the electrical and optical focus Repeat the alignment of the stigmators if necessary as both adjustments stigmator and 2 pole magnets influence each other a ...

Страница 8: ...R THE RASTER ON THE GREEN RED AND BLUE CRT RESPECTIVELY GREEN BLUE RED Picture movement when adjusting the arrow keys to center the GREEN RASTER To center the RED raster VERTICALLY press ENTER NOTICE the RED and Blue raster are tracked with the GREEN raster horizontally Center the raster vertically using the arrow keys of the RCU up and down To center the BLUE raster VERTICALLY press ENTER Center ...

Отзывы: