Disassembly For Service Pt-47X54J Models - Panasonic PT-47X54J Service Manual

10 Disassembly for service PT-47X54J models.

NOTE:
Board ground wires may have to be disconnected to
disassemble some boards. All ground wires must be
reconnected using jumper leads, if necessary, before power
is applied to PTV for service.
Speaker grille removal
Speaker grille, is secured to the cabinet of the PTV with 1
velcro dot and 2 screws at the bottom. Take the screws out
and grip panel from the bottom, pull slightly backward and
at the same time pull down to uncouple the 4 tabs. When
reassembling, make certain to firmly press on the panel
where the velcro dot is and that the four tabs are properly
inserted in the front cover.
Speaker grill removal
Front cover replacement
1. Remove the speaker grille.
2. Remove the cabinet front board by removing the 2
screws in the middle section.
3. Remove the screws from the middle section (4) of the
front panel and both side panels (3 in each side from the
back, see picture).
4. Pull the front panel from the bottom slightly downwards
to unlock the tabs and remove.
Screen frame removal
1. First, remove the front panel.
2. Below the screen, remove the 5 screws from the tabs,
just below the front A/V inputs.
3. Remove the 10 screws from the back cover. At this point
the top shelf must be removed from the back cover (2
screws).Be careful when removing the screen frame, try
removing the screws from the sides first and leave the
top screws at last, be sure to hold the frame when
removing the last screws.
Screen frame removal (back view)
4. Tilt the assembly forward while lifting it out of place.
CAUTION:
At this point the keyboard, A/V inputs and
convergence sensors, must be disconnected from
K-board and G-board, otherwise the cables and
connectors could get damaged.
Screen assembly
1. Remove the screen frame. See screen frame removal
procedure above.
2. Place screen frame face down on a soft surface.
3. If necessary remove G-board and/or K-board.
4. If necessary disassemble A/V panel removing the
screws (4) and tilt the panel upwards and release it from
screen frame.
5. Remove the screws from the screen frame (20), be
careful not to damage the convergence sensors (see
picture).
13