Disassembly For Service; Back Cover; A-Board; L-Board - Panasonic CT-32HX40B Service Manual

Disassembly for Service

Back Cover

Remove all the screws marked with an arrow(
from the back of the Receiver. (See Fig. 8)
Note: Screw configuration, type, and number
of screws vary depending on the
model of the Receiver serviced and
the application; various models are
covered in this Manual. Use same
hardware when
receiver.
• 4 screws at the top edge of the Receiver.
• 4 screw by the A/V jacks.
• 1 screw by the antenna jacks.
• 1 screw by the
Dolby Center Ch Input.
• 1 screw at the lower part of TV.
• 1 screw at each lower corner of the Receiver.
• 1 screw by the retainer plate of the AC power cord.
• 1 screw by the AC Cord assembly.
Note: Extensions for board connectors may
be needed to take voltages on
H-Board, AG-Board, Q-Board and
P-Board, please see Parts List section
for part numbers in this Service
Manual.
A-Board - Main Chassis (See Fig. 49)
The H, AG and DG-Board are assembled on the Main
chassis (A-Board). When servicing these boards,
extension cables may be required. Cables kit can be
ordered from Matsushita Services Company, Part
No. TXAZS011SER. The A-Board assembly rest on a
chassis tray along with the D-Board.
Slide chassis tray out. Gently lift, tray and pull out.
Disconnect plug connectors; release wire ties and
holders as required for complete chassis removal.
A. A-Board is secured to the chassis tray with five
screws.
B. The D-Board is secured to the chassis tray with
five screws
C. The A-Board is mated to the D-Board by four
flexible connectors: A4, A5, A6 & A7 (D4, D5, D6 &
D7 on the D-Board, respectively). To remove either
boards, unplug the connectors on the A-Board.
Note: Some tie-wraps that secure the wire
dressings may need to be unfastened
for chassis removal.
Insert wire then
pull upwards
)
reassembling the
Note: To realease the
GND cable from
A20 connector
insert a wire in
both cavities of
connector, then
pull the cable.
- 11 -
L-Board - CRT Output
Plugs into the socket on the CRT neck.
To remove this board, first unplug the board from
the CRT neck, then disconnect
connectors, to disconnect the focus F1(Red Cable)
& F2(White Cable) cables, pull the tab and release
the cables, finally disconnect the screen cable from
the D-Board D16.(See Fig. 6).
To reinsert back the cables, remember the original
position of cables, F1(red cable) goes to A on the
CRT socket and F2(white cable) goes to B on the
CRT socket.
Press tab
leftward to
release cables
Figure 5. F1 & F2 cables release
To release screen GND cables from L-Board L11 & L12
connectors, insert a wire in both sides of connector and
pull upwards the cable, then remove the wire
(See Fig. 6)
Insert wire
Figure 6. L-Board Screen GND cables release
H-Board - A/V Jacks, S-Video Connectors,
and S-Video Switch
Plugs onto A-Board at the A9 connector.
Note: Use a small flat head screwdriver to
release the connector locking tabs.

AG-Board

Plugs onto A-Board at the A25 & A26 connectors.
Note: Use a small flat head screwdriver to
release the connector locking tabs.

DG-Board

Plugs onto the A-Board at the A10 connector.
Note: This Board is Not-Serviceable.
When removing this board pull carefully.

Q-Board

Plugs onto the D-Board at the D8, D9 & D10
connectors.

P-Board

Plugs onto the right side of the D-Board at D1, D2
& D3 connectors; First remove the three screws
that holds the metal board, one from the flyback
L1, L2 & L3
Pull cables
upwards
Pull cable upwards