Maintenance Procedures Chapter 4
35
MOTOR CONTROL BOARD REPLACEMENT
Required Tools:
No. 2 and 3 Phillips Screwdrivers Long-Nose Pliers Cutting Pliers
3/8" Wrench
Procedure:
1. Raise the bed fully up and apply the brakes.
2. Unplug the bed power cord from the wall outlet.
3. Remove the foot board.
4. Using a no. 3 Phillips screwdriver, remove the six screws (A) holding the plastic cover to the
foot end casing. Grasp both ends of the cover, move them apart to disengage the inside clips
from the round accessory brackets and remove the cover.
5. Using a no. 2 Phillips screwdriver, remove the four screws (B) holding the protective plate to
the foot end casing.Properly ground yourself (see section 1.4).
6. Properly ground yourself (see section 1.4)
7. Using cutting pliers, clip the cable ties holding together the cables.
N
N
O
O
T
T
E
E
Carefully note the position and the gathering of the cables before clipping the cable ties.
8. Remove all cables connected to the control board. Note their location so they will be
connected properly to the new board. Refer to drawing OL280001 or OL280010 for the
connecting position of the cables on the motor control board
9. Using a 3/8" wrench, remove the nut/screw (C) holding the ground cable to the frame.
Figure 4.3C
B
C
C
D
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