Basic American Medical Products, a division of GF Health Products, Inc. www.grahamfield.com 999-0831-190A Service Manual
28
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TROUBLESHOOTING MOTOR CABLES & CONTROL BOX

1. HEAD, FOOT, OR HI/LO FUNCTION

NOT WORKING

a. Check plugs to make sure they are firmly seated in all ports
on your Control Box and are plugged into the correct ports
(See diagram at right).
b. Check all cables to make sure they are not frayed, pinched,
or damaged in any way. If any cable is damaged, UNPLUG
YOUR BED’S POWER CORD FROM THE WALL OUTLET
and REPLACE THE CABLE AND/OR THE ELECTRONIC
COMPONENT.
c. HEAD DECK NOT RAISING - Unplug the power cord. Switch
the head and foot plugs (ports 1 and 3). Re-plug the power
cord and press the FOOT button to test.
- HEAD WORKS = Control Box head port bad.
Replace box (See page 31 for order information.)
- DOESN’T WORK = Replace the Head Motor.
(See page 31 for order information.)
d. FOOT AND KNEE DECKS NOT RAISING - Unplug the
power cord. Switch the foot and head plugs (ports 3 and 1).
Re-plug the power cord and press the HEAD button to test.
- FOOT WORKS = Control Box foot port bad.
Replace box (See page 31 for order information.)
- DOESN’T WORK = Replace the Foot Motor.
(See page 31 for order information.)
e. BED DOES NOT GO UP AND DOWN IN HORIZONTAL
POSITION - If you press the Up or Down Hi/Lo button and
you hear a click or buzz but nothing happens = Check your
Hi/Lo Motors by touching them & pushing the Hi/Lo buttons.
- YOU FEEL NOTHING= possible bad motor - go to the
third step below.
- YOU FEEL SLIGHT VIBRATION= Motor OK.
- Unplug the Power Cord = Switch the two Hi/Lo plugs
(ports 4 and 2) in the Control Box. Re-plug the power cord
and press the same Hi/Lo button, then touch the same
non-vibrating motor.
i. MOTOR NOW VIBRATES= Bad port in the
Control Box - Replace box. (See page 31 for
order information.)
ii. MOTOR DOES NOT VIBRATE= Replace
the bad Hi/lo Motor. (See page 31.)

2. BED LOOKS UNLEVEL - HILO MOTORS

ARE NOT IN SYNC.

a. Press the Hi/Lo “DOWN” button repeatedly on either
the Staff Control or Pendant/Hand Controller until
the bed goes completely down and rests in its full
horizontal position. The two HI/LO motor shafts
should be completely retracted inside the motors.
T-CABLE
FOOT HILO
FOOT
HEAD HILO
HEAD
HB
4
3
2
1
BATTERY
POWER PLUG

QUICK REFERENCE

- HI/LO & FOOT WORKS, BUT HEAD DOES NOT:
Switch Head & Foot Motor Cable at the Control Box
and test (See Step C in left column).
- HI/LO & HEAD WORKS, BUT FOOT DOES NOT:
Switch Foot & Head Motor Cable at the Control Box
and test (See Step D in left column).
- HEAD & FOOT WORKS, BUT HI/LO DOES NOT:
a. Switch Head and Foot Hi/Lo Motor Cables at the
Control Box and test (See Step E in left column).
b. Test to see if Hi/Lo Motors need to be re-aligned
(See Step F above).