JVC JX-S555 Service Manual page 5

Note : For the positions of the connectors, see the connection
diagram (page 6).
Removing the top cover 1
1. Remove the two screws 3 retaining the top cover 1 from the
rear panel 2, then remove the four screws 4 retaining the
top cover from the side panels.
2. Slightly open out the bottoms of the side skirts I of the top
cover 1 as shown in the figure, then pull the top cover straight
upward II . Do not remove the top cover by pulling it up in an
oblique direction.
Removing the Audio 1 Board 5
Board 6 6 6 6 6
1. Remove the top cover 1.
2. From the rear panel 2, remove the six screws 7 retaining the Audio 1 board 5 and the six screws 7 retaining the
Audio 2 board 6.
3. Gently remove the Audio 1 board 5 and then unplug the connectors CN809 and CN810 from it.
4. Gently remove the Audio 2 board 6 and then unplug the connectors CN807 and CN808 from it.
Removing the Main Board B
1. Remove the top cover 1, then the Audio 1 board 5 and finally the Audio 2 board 6.
2. From the rear panel 2, remove the nineteen screws C retaining the Main board B.
3. Unplug the connectors CN1, CN3, CN804 and CN811 (and the wire from the Front Panel Assembly D )on the Main
board B .
4. Unplug the connector CN901 (in the power supply circuit) on the Main board B.
5. Remove the two clamping screws E on the Main board B.
6. Disengage the three claws of the locking card spacer F on the Main board B, then remove the Main board by lifting
it in an oblique direction.
Removing the Rear Panel 2
1. Remove the top cover 1.
2. Unplug the connector CN901 (in the power supply circuit) on the Main board B.
3. Remove the twelve screws 7 retaining the Audio 1 board 5 and the Audio 2 board 6, then remove the nineteen screws
C retaining the Main board B.
4. Remove the three screws H retaining the bottom chassis G and the rear panel 2.
5. Gently remove the rear panel 2.
(Take care of the AC power cord I connected to the rear panel 2.)
Removing the Front Panel Assembly D
1. Remove the top cover 1.
2. Remove the three retaining screws J from the bottom of the Front Panel Assembly D.
3. Disengage the fittings between the side panels of the Front Panel Assembly D with the bottom chassis G, then
gently pull out the Front Panel Assembly D from the bottom chassis G toward the front.
4. Unplug the connectors CN1, CN3, CN804 and CN811 from the Main board B.
5. Remove the Front Panel Assembly D.
Removing the Front 1 Board K
1. Remove the top cover 1 and the Front Panel Assembly D.
2. Remove the two screws M retaining the Front 1 board K, five screws M retaining the Front 2 board L and the two screws
9 retaining the Jack board 8.
3. Remove the Front 1 board K, the Front 2 board L and the Jack board 8.
1 1
1 1
5 5
5 5 and Audio 2
B B B
B
2 2 2 2
D D D D
K K K K , Front 2 Board L
I
L and Jack Board 8 L L L 8 8 8 8
JX-S555(J)
II
I
(No. 70251) 5