Quickie Rhythm - Power Shear Does Not Operate

RHYTHM SERVICE MANUAL
PAGE 6.5
2009SUNRISE MEDICAL
Section 6
Power Shear Does not Operate
1. To test the Shear actuator resistance, locate the
ISM mounted on the back of the wheelchair.
2. Disconnect the 2 pin connector at actuator
port 1 (fi g. 6.5.1)
3. Check for resistance at this harness,
normal resistance would be 6 to 8 ohms when the
actuator
is in mid-stroke and greater than 1 m ohms when
at
either extremity.
If you have verifi ed resistance at this connection,
Replace the ISM.
Left
Lights
Inhibit
4
Inhibit
5
Right
Lights
123
456
Actuator
Channels
Actuator
Channels
4. If your reading is open, re-test the resistance
at the 6 pin connection leading directly from the
shear actuator (fi g 6.5.2) at pins 1 and 5.
If your reading is open, replace the shear
actuator.
If resistance is verifi ed, replace the harness
leading from the 6 pin actuator harness to the
ISM.
fig. 6.5.1
fig. 6.5.2
123
4
56