Barco R9002129 User Manual
DATA 708
R9002120
R9002129
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 individu-
als 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
I. Removing and disassembling the defective picture tube.
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.
Module frame
Retaining screws
Retaining screws
Replacement of a picture tube
1
Date : 08/06/99
DATA 708
Electrical disconnection
4. EHT lead disconnection
Pull out the EHT lead of the defective picture tube from the EHT splitter.
EHT lead
Red
Green
Blue
R9002120
R9002129
To pull out
Fig. 1
5. Picture tube drive module removal
Cut the cable-tie indicated with A on the picture below,
loosen it and remove it.
Disconnect the CRT ground plug (indicated with B) of
the defective picture tube.
Loosen the gear clamp of the Picture tube drive module
(indicated with C).
Carefully pull the module (indicated with D) back to slide
the CRT socket off from the end of the CRT.
B
CRT ground plug
A
To secure
To open
Ì
C
D
Replacement of a picture tube
Fig. 2
2
Date : 08/06/99
DATA 708
CRT unit removal
6. Remove the two bolts, holding the CRT unit
to the CRT main frame.
Pull upwards the CRT unit while using a
screw driver to push the CRT out of the clips
at the bottom, to remove the CRT unit.
R9002120
R9002129
Bolts
clips
clips
Fig. 3
Removing the deflection unit and the stigmator magnets
- Loosen the gear clamp of the stigmator
magnets unit.
- Loosen the gear clamp of the deflection unit.
Clips
- Slide the stigmator off from the end of the
CRT.
- Remove the mu-metal
- Slide the deflection unit off from the end of
the CRT.
Replacement of a picture tube
Gear clamp
Deflection unit
Gear clamp
Stigmator unit
Fig. 4
3
Date : 08/06/99
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