JVC AV-25SX4EK~C~
Service Manual

KS-LX200R
Removing the main board assembly (See Fig.6 to 8)
Prior to performing the following procedure, remove the top chassis. 1. Remove the screw S attaching the bracket (L). 2. Disconnect the flexible harness from connector CN701, the card wire from CN702 on the main board and the harness from CN503 and CN504 respectively. 3. Remove the three screws H attaching the main board assembly to the bottom cover on the upper side of the body. 4. Remove the screw I attaching the rear panel and the bottom cover on the back of the body. Move the main board in the direction of the arrow and release the two joints a. (At this point, the main board can be removed with the rear panel and the rear heat sink.) 5. Remove the screw J and the two screws K attaching the rear heat sink on the back of the body. 6. Remove the two screws L and the screw M attaching the rear panel. Now, the main board assembly will be removed. ATTENTION: When reassembling, correctly engage the switch S561 and S562 on the main board with the part e of the operation assembly (Refer to Fig.7, 18 and 19).
Main board S652 S651 CN503 Bracket (L) CN701 Main board assembly CN504

H S H Joint a
Joint a CN702 Front panel assembly

H

Fig.6

e

Fig.7

M L L

Rear heat sink

J

Rear panel

K

I
Fig.8

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