WR1000-UM-251–01–9380 3 – 15
3. DISASSEMBLY AND REASSEMBLY
(3) Clean the keytops.
The structure of each key board conforms to the figure below.
Fig. 3-3-20
Clean the keytops as follows.
a. Wipe off the stains from the contact area on the board side, using alcohol or its equivalent.
b. Remove dust and other foreign matter from the contact area of each rubber switch (the black rubber
part).
CAUTION
Because the rubber switches have contact areas made of conductive rubber, using alcohol or other
chemicals to clean them may cause deterioration. As a result, never use alcohol or other chemical
solvents to wipe off the rubber switch-keys.
If the key response does not improve even after cleaning, replace that rubber switch-key or the entire key
board.
3.3.5 Replacing the Key Control Board
(1) In the direction indicated by the white arrow below, pull the jog/shuttle dial off of the front of the control
panel.
Fig. 3-3-21
Exploded view of contact area
Keytop
Keytop
Rubber switch
Contact area
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