Specific Service Instructions; Disassembly Procedure - Panasonic BT-H1700P Service Manual

SPECIFIC SERVICE INSTRUCTIONS

DISASSEMBLY PROCEDURE

q CAUTION
Some parts are active even after the main power switch is set to
OFF.
Be sure to unplug the power cord from the power outlet before
proceeding with disassembly or assembly of the unit.
q REMOVING THE SLOT PANEL, TOP COVER AND
REAR PANEL
1. Unplug the power cord, remove the six screws
the Slot Panel.
2. Remove the fourteen screws
3. Open up the lower part of the Top Cover slightly. Then pull the
Top Cover toward the rear and lift to remove it.
4. Also remove the Rear Panel.
q REMOVING THE BOTTOM COVER
s Remove the Slot Panel, Top Cover and Rear Panel before pro-
ceeding to the following.
1. Place the unit so that the side with the Slot Chassis comes at
the bottom.
4
2. Remove the six screws
rear to remove it.
q REMOVING THE SIGNAL PW BOARD, MOTHER PW
BOARD AND REMOTE PW BOARD
s Remove the Slot Panel, Top Cover and Rear Panel before pro-
ceeding to the following.
1. Disconnect the wire clamps and connectors as required.
2. Remove the four screws
the connector on the Mother PWB.
3. Remove the two screws
4. Remove the two screws
by lifting it while pushing the claw
5. Remove the nine screws
9
6. Remove the screw , the two screwnuts
!
screwnuts , then remove the Remote PWB.
q REMOVING THE CHASSIS BASE AND SPEAKER
s Remove the Slot Panel, Top Cover, Rear Panel and Slot Chas-
sis before proceeding to the following.
1. Disconnect the wire clamps and connectors as required.
2. Remove the two screws
the front to remove it.
3. While disengaging the claw
gaged with the rear of the speaker, lift the speaker to remove it
(see Fig. 2).
q REMOVING THE SIDE BRACKETS, CRT AND TALLY
PW BOARD
s Remove the Slot Panel, Top Cover, Rear Panel, Bottom Cover,
Slot Chassis and Chassis Base before proceeding to the fol-
lowing.
1. Remove the four screws
2. Also remove the CRT.
3. Remove the two screws
4
1
and remove
2
and then the two screws
and pull the bottom cover toward the
5
and unplug the Signal PWB from
6
and then remove the joint bracket.
7
and then remove the Slot Chassis
Ç
on the Chassis Base.
8
and remove the Mother PWB.
0
and the two
@
and pull the chassis base toward
Î
on the chassis base that is en-
#
and remove the Side Brackets.
$
and remove the Tally PWB.
q REMOVING THE FRONT CONTROL PW BOARD
AND FRONT VR PW BOARD
1. Remove the five screws
2. Disconnect the connectors as required.
3. Remove the three screws
4. While slightly lifting the two claws
move the Front VR PWB.
q DIAGNOSING THE MAIN PW BOARD
1. Remove the Slot Panel, Top Cover and Rear Panel.
2. Place the unit so that the side with the Slot Chassis comes at
3
.
the bottom, and remove the Bottom Cover.
3. Now the diagnosis of the Main PWB is possible.
* The unit is unstable when it is placed on its side so please
be careful that it does not topple over during work.
* Before turning the power on, ensure that the connectors in
cluding the CRT grounding are connected properly.
Before turning the power on, ensure that the spiral wires (Yellow/
Green) and the CRT grounding wires are connected properly.
Spiral wires
(Yollow/Green)
View from the rear of the AC inlet
q NOTE CONCERNING WIRE CLAMPING
s Be sure to reconnect the wire clamps that have been discon-
nected during the above work.
%
and remove the Control Base.
^
and remove the Front Control PWB.
´
on the Control Base, re-
CAUTION
CRT grounding wire
Black
White
Black
White