1-12 (No.MB170)
3.17 Removing the front key & system control board
(See Figs.17 to 20)
• Prior to performing the following procedures, remove the top
cover, front panel assembly, switch board and power switch
board.
(1) Pull out the volume and jog knobs from the front side of the
front panel assembly, remove the nut attaching the front
key & system control board. (See Fig.17)
(2) From the back side of the front panel assembly, remove the
eight screws Y attaching the sub panel assembly. (See
Fig.18)
(3) Remove the sub panel assembly while releasing the claws
f in the direction of the arrow. (See Figs.18 and 19)
(4) Release the claws g attaching the front key & system con-
trol board in the direction of the arrow and take out the front
key & system control board. (See Fig.20)
Fig.17
Fig.18
Fig.19
Fig.20
Volume knob
Nut
Front panel assembly
Jog knob
Y
Claws f Claws f
Front panel assembly
Sub panel assembly
Sub panel assembly
Front panel assembly
Front key & System control board
Front panel assembly
Claws g
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