CCoott lleeggss aarree rreettrraacctteedd,, bbuutt tthhee ccoott iiss nnoott lliifftteedd bbyy tthhee lliiffttiinngg aarrmmss wwhheenn yyoouu pprreessss
tthhee rreettrraacctt ((--)) bbuuttttoonn
1. Make sure that the trolley is on and functions without errors.
2. Make sure that the cot and trolley communication modules are connected, undamaged, and working properly.
a. Try the cot with a known, good PPoowweerr--LLOOAADD.
b. Try the trolley with a known, good cot.
3. Check all cable connections associated with communication leading back to the control board.
4. Replace the communication board (6390-001-378 or 6500-002-100).
5. Replace the control board assembly (6390-001-014 or 6500-002-014).
CCoott iiss lliifftteedd bbyy tthhee lliiffttiinngg aarrmmss,, bbuutt tthhee ccoott lleeggss ddoo nnoott rreettrraacctt wwhheenn yyoouu pprreessss tthhee
rreettrraacctt ((--)) bbuuttttoonn
1. Check the support sensor (6390-001-397) on the trolley.
2. Check the cable and connections to the control board.
3. Check for an error on the trolley control panel. If there is an error, contact Stryker Technical Support.
4. Check the cot by itself for proper functionality.
5. Make sure that the cot indicates a good battery and no errors are present on the cot LCD. If you have an error, replace
the battery.
6. Press the retract (-) button on the cot.
a. If you hear the cot pump motor run, the issue is a stuck rod-side manual valve (patient left manual valve) on the cot.
7. Remove the pressure switch connection from the cot main cable (at the end closest to the hydraulics) to check for a
faulty pressure switch.
a. Jumper the cable to simulate a closed switch and press the retract (-) button.
b. If you do not hear the motor, the cable connections or pump motor may be the problem.
c. Fix the connection or replace the pump motor.
8. Check the cot control board (6390-101-014) and replace, if necessary.
TTrroolllleeyy lliiffttss tthhee ccoott ttoooo sslloowwllyy wwhheenn yyoouu pprreessss tthhee rreettrraacctt ((--)) bbuuttttoonn
1. Make sure that the trolley battery voltage is > 12.2V DC.
a. If the battery is charged and the voltage is < 10.0V DC when you press the retract (-) button, replace the trolley
battery.
2. Check for an error on the trolley control panel LEDs while you move the lifting arms with the trolley control panel.
a. If an error is active only when you use the lifting arms, replace the support sensor (6390-001-452).
3. Replace the hydraulics assembly (6390-001-039).
4. Replace the control board assembly (6390-101-014).
LLiiffttiinngg aarrmmss lliifftt tthhee ccoott ttoooo qquuiicckkllyy wwhheenn yyoouu pprreessss tthhee rreettrraacctt ((--)) bbuuttttoonn
1. Check for a faulty or broken support sensor cable (6390-001-452).
2. Check for a faulty cabling connection to the control board.
6390-309-002 Rev AB.0 23 EN
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