(No.YA193)1-7
SECTION 3
DISASSEMBLY
3.1
DISASSEMBLY PROCEDURE
3.1.1 REMOVING THE TWIN PORT BASS BLASTER UNIT
• Unplug the power supply cord.
(1) Disconnect the TWIN PORT BASS BLASTER UNIT's cord
from the rear of the TV set.
(2) Remove the TWIN PORT BASS BLASTER UNIT by pulling
it upwards.
NOTE:
After removing the TWIN PORT BASS BLASTER UNIT,
proceed to the following procedure.
3.1.2 REMOVING THE REAR COVER
• Unplug the power cord.
(1) Remove the 16 screws
[A]
as shown in Fig.1.
(2) Withdraw the REAR COVER toward you.
CAUTION:
When reinstalling the rear cover, carefully push it inward after
inserting the MAIN PWB into the REAR COVER groove.
3.1.3 REMOVING THE CHASSIS (CHASSIS BASE AND
CONTROL BASE)
• Remove the REAR COVER.
(1) Slightly raise the both sides of the CHASSIS by hand and
remove the 2 claws
[B]
under the CHASSIS from the front
cabinet as shown in Fig.1.
(2) Withdraw the CHASSIS backward.
(If necessary, take off the wire clamp, connectors etc.)
NOTE:
When conducting a check with power supplied, be sure to
confirm that the CRT earth wire is connected to the CRT
SOCKET PWB and the MAIN PWB.
3.1.4 REMOVING THE AV TERMINAL BOARD
• Remove the REAR COVER.
(1) Remove the 4 screws
[C]
as shown in Fig.1.
(2) When you pull out the AV TERMINAL BOARD in the
direction of arrow
[D]
as shown in Fig.1, it can be removed.
3.1.5 REMOVING THE CONTROL BASE
• Remove the REAR COVER.
• Remove the CHASSIS.
(1) While pushing down the 2 claws
[E]
as shown in Fig. 2 and
pull out the CONTROL BASE in the direction of arrow
[F]
as shown in Fig. 2, the control base can be removed.
(If necessary, take off the wire, connectors etc.)
3.1.6 REMOVING THE SPEAKER
• Remove the REAR COVER.
(1) Remove the 2 screws
[G]
, and remove the SPEAKER
HOLDER.
(2) Remove the 4 screws
[H]
as shown in Fig.1.
(3) Withdraw the SPEAKER backward.
(4) Follow the same steps when removing the other hand
SPEAKER.
3.1.7 CHECKING THE MAIN PW BOARD
• To check the back side of the MAIN PWB.
(1) Pull out the CHASSIS and CONTROL BASE. (Refer to the
procedure described in REMOVING THE CHASSIS)
(2) Put the CHASSIS in upright position with the MAIN PWB's
solderside faced to the right. The FBT must be positioned
on top. (Viewed from the rear)
(3) Put the CONTROL PWBs in an appropriate position, taking
care not giving tension to the ribbon cables that connect to
the MAIN PWB.
CAUTIONS:
• Use insulating materials, if necessary, to avoid possible
electrical contacts between PWBs and expose terminals,
etc.
• Before turning on power, make sure that the CRT earth wire
and other connectors are properly connected.
• When repairing, connect the DEG. COIL to the DEG.
connector on the MAIN PWB.
3.1.8 WIRE CLAMPING AND CABLE TYING
(1) Be sure to clamp the wire.
(2) Never remove the cable tie used for tying the wires
together.
Should it be inadvertently removed, be sure to tie the wires
with a new cable tie.
