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Service Guide
Hardware Error Messages
Device Error #1: "Linear axis motor position error failure"
Device Error #2: "Linear axis motor encoder failure"
Device Error #4: "Linear motor peak over current failure"
Device Error #7: "Linear Homing cycle was not completed"
Device Error #10: "Linear motor commutation error"
Scenario
[1] During power up the linear motor failed in the commutation phase because of a disconnected limit switch.
[2] During power up the linear motor cable CB057019 is not connected properly.
[3] Encoder cable CB057049 is not connected properly.
[4] Encoder cable CB057024 is not connected properly.
[5] IMCS board assembly failure.
[6] Linear motor assembly failure.
Recommended Action by Field Engineer
[1] Remove the scanner cover and insert the technician key.
[2] Check that the coupling is tightly fastened and there is no slipping between the linear screw and the motor axis.
[3] Check the voltages of the IMCS board. See
If the voltages are incorrect check the fuses on the controller board.
[4] Connect the SC Shell application. (See
Board on Page
185.). Check in the X-axis section of the SC Shell application that the FLS and RLS check boxes
are unchecked.
(a) If both check boxes are checked, (right and left limit switches, FLS -515, RLS-516) verify proper routing of
the sensor cables. If a cable is disconnected or the sensor is broken, the check box will be checked.
(b) If one of the check boxes is checked, verify that the linear slide assembly position corresponds to the
marked limit sensor. Manually move the screw to exit the limit sensor and verify if the check box is cleared.
(c) Reboot the scanner.
[5] Click Comm-X in the Custom section. The linear motor performs commutation. Check that the status under the
X-axis section indicates last motion ended normally.
[6] Encoder Test:
(a) Draw a line on the linear motor.
(b) Reset the position counter on the SC Shell by entering XPS=0 in the field.
(c) Click Enter. The counter resets to "0".
(d) Manually turn the linear motor a full cycle and check that the position counter is about 4000 counts.
(e) If the counter is not close to 4000 counts, check the linear axis encoder cables, CB057024 and CB057049.
(f) Check the encoder and the encoder reader. (See
[7] Check that cable CB057019 and the linear motor flex cable are connected properly.
[8] Replace the linear motor.
[9] Replace the IMCS board.
164
Block Diagram #3 on Page
Establishing Communication Between the Host Computer and the IMCS
Block Diagram #5 on Page
154.
156.)
6H4869
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