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2-13. Removing/Reattaching Plug-in
Board
n
When the plug-in board is replaced, refer to Section 6
"Replacement of Plug-in Boards".
1. Turn off the power.
2. Remove the upper lid. (Refer to Section 2-3-1.)
3. To remove the board retainer (L) or (S), fully loosen a
screw.
Screw
(with stopper)
Protrusion
Board retainer (L)
Square hole
4. When removing the TBC-23 or TBC-24 board,
disconnect the connected harness from its board.
TBC-23 board :
CN1 (E-1) ..................... 14P White
TBC-24 board :
CN1 (E-1) ..................... 14P White
DNW-A22/A22P
Board retainer (S)
Screw
Protrusion
(with stopper)
Square hole
2-13. Removing/Reattaching Plug-in Board
5. Open the eject levers on both end of the board in the
direction of the arrows.
6. Hold the eject levers and slowly pull the board out.
2
1
1
Pulling out
7. When removing the APR-12 or EQ-56 board, discon-
nect the connected harness from its board.
APR-12 board:
CN500 (A-1) ................ 3P Red
CN600 (G-1) ................ 3P Yellow
EQ-56 board:
CN100 (B-7) ................ 6P White
CN500 (A-4) ................ 4P White
CN1500 (A-6) .............. 4P Black
When reattaching, install in the reverse order of pulling
out.
m
. After inserting the board, push in the two folded eject
levers simultaneously to firmly connect the plug-in
board to the connector on the motherboard (MB-648
board).
. To reattach the board retainer, tighten the screw after
inserting the protrusion of the board retainer into the
square hole of chassis.
1
1
3
3
2
Insertion
2-21
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