2.5 Backrest Malfunction
Chapter 2: Troubleshooting Procedures
Electrically Operated General Ward Bed Page 2 - 13
Operation and Maintenance Manual (154588 REV 1)
2
2.5 Backrest Malfunction
1. Does at least one of the other functions operate correctly?
Yes No
Go to RAP 2.1 on page 2-7.
2. Is the backrest lockout function unlocked?
Yes No
Unlock the backrest function.
3. Is the handset plugged into the socket correctly?
Yes No
Connect the handset.
4. Is the ACP connected to the control box?
Yes No
Connect the ACP to the control box.
5. Test the actuator. Trace the wire from the actuator to the control box, and
label it. Trace the wire from a working actuator to the control box and label
it. Switch the two connections and use the handset to actuate the known
good actuator.
The backrest actuator fails to extend/retract when the known good function
is activated.
Yes No
Switch the connections back to original, and then replace the
backrest actuator. Go to “Function Checks” on page 2-3.
6. Without switching the wiring back to original positions, swap the ACP
with a known good ACP. Use the handset to activate the known good
function. The backrest actuator fails to extend/retract when the known
good function is activated.
Yes No
Switch the connections back to original, and then replace the
backrest actuator. Go to “Function Checks” on page 2-3.
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