8. Check the connection of the trolley main cable (6390-001-391) to the control board assembly (6390-101-014). If
necessary, replace the control board assembly (6390-101-014).
9. Check the connection of the trolley LED cables (6390-001-396). If necessary, replace each of the trolley LEDs (6390-
001-396).
10. Replace the trolley main cable (6390-001-391).
C
Co
ott rre
elle
ea
asse
e b
bu
utttto
on
n d
do
oe
ess n
no
ott u
un
nllo
occkk tth
he
e cco
ott ffrro
om
m tth
he
e ttrro
olllle
eyy
1. Confirm that both the cot and the trolley have power, that there are no errors, and that both are operational
independently.
2. Make sure that the cot release handles on the trolley are able to release the cot from Power-LOAD.
3. Confirm that communication exists between the cot and P
Po
ow
we
err--L
LO
OA
AD
D by lifting the cot using the cot controls.
4. Press the release button on the second switch. If this works, the issue is with the first switch or there is a bad connection
in the cot.
5. In a quiet area, press the release button and listen for a clicking sound at the head end patient left side of the trolley. You
may need to push the button twice if the cot is asleep.
6. If there is a sound, a broken part in the actuator assembly or an improperly installed actuator assembly (6390-001-478)
may be the problem.
7. If there is no sound, remove the trolley top and the patient left side covers.
a. Confirm that the connection of the actuator (6390-001-478) to the circuit board is good and the contacts appear to be
in good condition.
b. Confirm that the connection of the trolley main cable (6390-001-391) to the control board assembly (6390-101-014)
is good, the connector screws are tight, and the contacts appear to be in good condition.
c. Test P
Po
ow
we
err--L
LO
OA
AD
D with a new actuator (6390-001-478).
d. Test P
Po
ow
we
err--L
LO
OA
AD
D with a control board assembly (6390-101-014).
T
Trro
olllle
eyy rre
elle
ea
asse
e h
ha
an
nd
dlle
ess d
do
o n
no
ott rre
elle
ea
asse
e tth
he
e cco
ott ffrro
om
m tth
he
e ttrro
olllle
eyy
1. Confirm that the system is in the loading position with the cot wheels on the ground and the head section locked into the
trolley.
2. Confirm that the lifting arms are in the full down position.
3. Are the release handles on the trolley free to rotate (they should rotate about 20 degrees)?
4. If yes:
a. Inspect the release handle mechanism. Pay particular attention to the activation cams (6390-001-329).
b. Inspect the trolley latches (6390-001-318 and 6390-001-319).
5. If no:
a. Remove the trolley covers.
b. In the mechanism in the center of the trolley at the head end, check the trolley arm (6390-001-334) or its return
spring. Check to see if the spring is broken or jammed by debris.
c. Make sure that the trolley arm mechanism (6390-001-045) in the trolley is not jammed.
d. Make sure that the trolley latches (6390-001-318 and 6390-001–319) are not stuck or broken.
6390-309-002 Rev AB.0
17
EN
Summary of Contents for 6390
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Page 95: ...Torque item B to 68 92 in lb Torque item K to 20 28 ft lb 6390 309 002 Rev AB 0 89 EN ...
Page 96: ...Torque item DE to 480 600 in lb EN 90 6390 309 002 Rev AB 0 ...
Page 97: ...Torque item C to 45 max in oz 6390 309 002 Rev AB 0 91 EN ...
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