4
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
1
and remove
the Slot Panel.
2. Remove the fourteen screws
2
and then the two screws
3
.
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.
2. Remove the six screws
4
and pull the bottom cover toward the
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
5
and unplug the Signal PWB from
the connector on the Mother PWB.
3. Remove the two screws
6
and then remove the joint bracket.
4. Remove the two screws
7
and then remove the Slot Chassis
by lifting it while pushing the claw
Ç
on the Chassis Base.
5. Remove the nine screws
8
and remove the Mother PWB.
6. Remove the screw
9
, the two screwnuts
0
and the two
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
@
and pull the chassis base toward
the front to remove it.
3. While disengaging the claw
Î
on the chassis base that is en-
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
#
and remove the Side Brackets.
2. Also remove the CRT.
3. Remove the two screws
$
and remove the Tally PWB.
SPECIFIC SERVICE INSTRUCTIONS
CAUTION
Before turning the power on, ensure that the spiral wires (Yellow/
Green) and the CRT grounding wires are connected properly.
CRT grounding wire
View from the rear of the AC inlet
Spiral wires
(Yollow/Green)
Black
White
Black
White
q
NOTE CONCERNING WIRE CLAMPING
s
Be sure to reconnect the wire clamps that have been discon-
nected during the above work.
q
REMOVING THE FRONT CONTROL PW BOARD
AND FRONT VR PW BOARD
1. Remove the five screws
%
and remove the Control Base.
2. Disconnect the connectors as required.
3. Remove the three screws
^
and remove the Front Control PWB.
4. While slightly lifting the two claws
´
on the Control Base, re-
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
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.
Summary of Contents for BT-H1700P
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