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Troubleshooting
Trolley manual release button does not lower the lifting arms
1. Remove the patient right side cover. Make sure that the linkages of the manual release that attaches to the side
controls are connected and actuating the manual release valve on the hydraulic pump.
a. If the manual release valve is actuating, then the problem is a faulty velocity fuse. The velocity fuse (6390-001-
381) is located in the cap end cylinder port under the elbow fitting. Remove and replace the velocity fuse.
b. If replacing the velocity fuse does not solve the problem, replace the pressure compensated flow control (6390-
001-151).
c. Replace the hydraulics assembly (6390-001-039).
Trolley manual release button lowers the lifting arms, but not smoothly
1. Remove and replace the velocity fuse (6390-001-381).
Note: The velocity fuse is located in the cap end cylinder port under the elbow fitting.
2. If this does not fix the issue, replace the pressure compensated flow control (6390-001-151).
3. Replace the hydraulics assembly (6390-001-039).
Trolley error LED indicates an error (solid amber)
Call Stryker Service
Trolley control panel does not move the lifting arms
1. Make sure that the power is on (solid green LED on the trolley control panel).
2. Make sure that the trolley is in the loading position and the latches are engaged.
Note: The trolley control panel will only work if the trolley is in the loading position and the latches are connected.
When the lifting arms are supporting weight, they only lower to a certain angle. These are safety features.
3. Check the head end indicators (solid green LED) to make sure that the product is in the loading position and that
both latches are engaged.
a. If there is no head end indicator LED activity, then the product is not in the loading position.
b. If the head end indicator LEDs are flashing amber, one or both of the latches are not closed. Check the status
of the latches.
c. If the problem persists, check the switches and connectivity back to the control board.
4. Check connectivity from the trolley control panel back to the control board.
5. Replace the trolley control panel board (6390-001-450).
Trolley stops part way while rolling to the transport position
1. Remove the transfer from the anchor.
a. Check for and remove any debris from the anchor and the channels on the inside of the transfer.
b. Examine the trolley to transfer lock release ramp (6390-001-144) to make sure that it is intact, tightly fastened,
and not excessively worn.
Note: The transfer lock release ramp is located about 24 in. from the foot end of the anchor.
c. Examine the trolley to transfer lock pawl assembly (6390-001-144). Make sure that the pawl is allowed to
rotate freely and, when pressed, it can rotate fully below the surface of the transfer.
d. Examine the V-guide rollers and the flat rollers on the trolley and anchor. Replace any rollers that do not roll
smoothly or are excessively worn.
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