Disassembly For Crt Replacement; Crt Replacement - Panasonic PT- 47WX49E Service Manual

Disassembly for CRT Replacement

To facilitate CRT replacement, the complete CRT
mounting chassis does not need to be removed.
1. Remove the main chassis block from the cabinet.
See Fig. 11.
2. Remove the Optical bracket metal cover (rear side)
by removing (6) screws from back, (2) screws from
top, and (2) screws from each side. See Fig. 14 &
Fig. 15.
REAR VIEW
Screws
(6) places
Pull Down
Figure 14. CRT Replacement
Focus Pack
Figure 15. Light Box Front View
3. Remove the defective CRT anode lead from the
high voltage distributor block that is mounted on
the Flyback Transformer. Discharge to CRT
chassis.
4. Unplug connectors from the B-Board. See board
layout. B9 for red, B10 for green, or B11 for blue.
5. Unplug the defective CRT black DAG ground
connector from the CRT Board.
6. Remove the CRT Board from the defective CRT
neck.
7. Remove (2) screws from the defective CRT
housing. See Fig. 16.**
CAUTION: Do not remove the (4) CRT
lens screws.
Service Manual
Optical Bracket
8. Release CRT anode lead from CRT chassis wire
9. Loosen a screw that secures the DY and remove it
Caution: To insure X-Ray radiation protection, the

CRT Replacement

1. Remove CRT focus lens assembly (4 screws).
2. Lay CRT face down on a soft cloth.
3. Note position of yoke with centering tabs and
4. Remove CRT DAG ground from defective CRT.
Note: Replacement CRT is supplied with H.V. anode
5. Wire the anode lead wire.
- 12 -
Optical Bracket Cover
Figure 16. CRT Replacement.
** CAUTION: Support the CRT Assembly
when loosening screws.
clamp and all other wires from holders.
from the CRT neck.
lens must be mounted in place at all times
when power is applied to the PTV.
Lens
(4) Screws
Figure 17. CRT Assembly.
remove from defective CRT.
Mount it on the replacement CRT exactly as it was
on the defective CRT.
lead attached.