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BARCO ——————————————————— 15

————————————— Projection Systems

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Scheimpflug Adjustment (Diagonal image focusing)

What has to be

done

With the diagonal image focusing corrections, it is possible to obtain uniform focus for

the total projected image.

These corrections must be repeated for each color. The Diagonal image focusing is

repeated 3 times, first for green, then for red and then for blue.

Image 16

1

2

3

4

5

16

17

18

19

20

First, be sure that the CRT projection angle is correctly

adjusted, otherwise it is not possible to obtain proper

overall focus of the image.

Press 

ENTER

 to start the green adjustment.

Press 

EXIT

 to return to CRT Projection Angle Adjustment.

Loosen first the security screws (see images opposite and

above.)

Example : diagonal focusing of the green image.

Equalize diagonally the focus from left (bottom) to right

(top) by turning screw A3 of the projected color.

Equalize now diagonally the focus from left (top) to right

(bottom) by turning screw A4 located under the green lens.

Repeat the same procedure for the red and blue image

using the corresponding screws.

To optimize the image focusing, repeat the optical lens

focusing.

When the scheimpflug corrections are correctly adjusted,

secure this position by fastening the security screws on

both sides of each lens.

Warning : When the security screws are tightened, it is not

possible to change the scheimpflug correction.

After finishing the Installation Adjustment Procedures, the

main menu returns on the screen. You are now able to start

the alignment procedure for the projector.

For detailed information about these adjustments, please

refer to the Owner's Manual of the projector.

Step

Action

Image

Adjustment

procedure:

Follow the next procedure:

Summary of Contents for R7628162K

Page 1: ...ATION MANUAL Procedure for the Building In of theAdjustable PictureTubes Rev 00 R7628162 2 K R7628165 5 K R7628166 6 K R7629092K R7629095K R7629096K R7624302K 5K 6K R7626412K 5K 6K R7624312K 5K 6K R76...

Page 2: ...tice Produced by BARCO NV May 2000 All rights reserved Trademarks are the rights of their respective owners BARCOn v ProjectionSystems Noordlaan5 B 8520Kuurne Belgium Tel 32 56 368211 Fax 32 56 351651...

Page 3: ...G IN THE NEW PICTURE TUBES 9 Procedure 4 9 Image 8 The correct panels 1 2 3 by r g b 9 Image 9 Position correction with screws 9 Procedure 5 10 Illustration together 10 Image 12 10 REPLACEMENT OF THE...

Page 4: ...R76281622K R76281655K R76281666K Procedure 1 Follow the next procedure 1 2 3 4 5 6 Remove the top cover Disconnect the end stage deflection focus Remove the lens Remove the 4 screws fixing the picture...

Page 5: ...s can not be replaced while the projector is mounted on the ceiling Remove the top cover Remove the protection cover panel top side opening Remove the Lenses Remove the perforated protection panel fro...

Page 6: ...BARCO 7 Projection Systems Image 2 Image 3 Image 5 lifting out the picture tube Image 4 difficult to reach screws...

Page 7: ...B board 1 2 3 4 7 6 Loosen the end stage deflection focus Remove PCB board at the end of the picture tube 4 screws Loosen the mounting screws on the top panel and lower panel will be reused Slide out...

Page 8: ...in the new picture tube and reconnect the end stage fix the picture tube block on the lower panel and top panel NOTE If necessary you can correct the position of the mounting panel with respect to the...

Page 9: ...and bottom Slide in the green and blue picture tubes and reconnecting their end stage Mount panel D and E screw top and bottom Mount panel F screw top Fix the panels on the picture tubes 4 screws are...

Page 10: ...BARCO 11 Projection Systems Replacement of the three picture tubes together Image 10 Adjustment Image 11 End stage touches frame...

Page 11: ...e tube R762430 2 R 5 G or 6 B together with the Video amplifier R762292 Notice that the picture tube R762104 2 5 and 6 is replaced in the same kit by an other type of picture tube together the Video a...

Page 12: ...2431 2 5 and 6 To enlarge the width of the projected picture for the replacement part short circuit the corresponding WIDTH coils on the Deflection Switching module ATTENTION before proceeding to the...

Page 13: ...s Replacement of a Picture Tube in the B 120 series projectors Continued Images 15 Pulse duration PULSE 2 P802 2 5us 0 5 u s 2 0 u s WD EOH P RXQWH G S UR MHF WRU F HLOLQ J P RX QWHG SURMHFWR U 0 5 u...

Page 14: ...ty screws see images opposite and above Example diagonal focusing of the green image Equalize diagonally the focus from left bottom to right top by turning screw A3 of the projected color Equalize now...

Page 15: ...A4 RED A5 A6 BLUE A1 A2 left right left right Image 18 Image 17 DIAGONAL IMAGE FOCUSING ENTER to continue EXIT to return 1 TURN THE SCREW MARKED TO FOCUS THE IMAGE DIAGO NALLY from LEFT bottom TO RIGH...

Page 16: ...rn LENS CENTER FOCUSING GREEN IMAGE RED IMAGE BLUE IMAGE DIAGONAL IMAGE FOCUSING from left top to right bottom EROW EROW EROW EROW EROW e g Turning bolt A5 will influence the diagonal focus for Red fr...

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