MANATEC LX WB-VL-65 DSP, Service Manual

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Ref.: WB-VL-SM Ver.1 3.doc
54
8. TROUBLE SHOOTING
The common troubles and error messages which can be attended by the users are listed in the
table given below.
For Troubles and Error messages other than that are listed in the table contact the Service
Engineer for Trouble shooting.
The Service Engineer may ask for information to help in diagnosing the service
concern. Conveying this information to the Service Engineer prior to servicing can help
to expedite service to your equipment
Sl.
No.
Error Causes Remedies
1
Wheel Guard
Not closed Guard may not be closed
properly

Close the Wheel guard properly and run.

Check the Wheel guard connector is inserted
properly.

Check the Limit switch for proper contact.
2
Distance rod is
not in Home
position Distance rod may not be at
home position

Ensure the Distance rod is in home position.

Check all the Encoder sensors are present in the
E-Distance encoder. Check the Distance encoder
board is blocked properly by the Distance
segment plate.

Run the Distance measuring test (Ref. Chapt.4.5)
and check the distance count is displayed
correctly.

If the problem still exists, replace the E-Distance
encoder board.
3
Revolution
Encoder pulse is
missing
Revolution pulse from the
Revolution encoder board
may not be received by the
DSP IC

Clean the slots in Round segment encoder and
remove blockage, if any.

Clean the IRLED & Photo transistor slots in board
holder.

Run the Tracking test (Ref. Chapt.4.4) & check
Revolution pulse from the encoder & match the
Round segment encoder slot with Rev. encoder
board to get the correct count.

If the problem still exists, replace the board.
4
Minimum RPM
is not reached
Required minimum RPM to
calculate the unbalance may
not be reached

Check for the incoming power is correct.

Check for the belt tension.
5
Weight
Calibration data
is not available.
Redo weight
calibration
Weight calibration data is
not available in the DSP
board
Perform Weight calibration and save. Also, do
Backup the calibration data
6
Time out
occurred during
acquisition.

Required RPM to
calculate the unbalance
is not reached.

If empty shaft is run in
Truck mode.

Check for the incoming power is correct.

Check for the belt tension.

DO NOT run Empty shaft in Truck mode.
7
Index pulse
missing.
Index pulse from the
Revolution encoder board
may not be received by the
DSP IC
Run the Tracking test and check the index pulse from
the encoder is received correctly. If not, replace the
Revolution encoder board.
8
Index pulse
detected always
Index pulse from the
Revolution encoder board
may not be received by the
DSP IC
Run the Tracking test & check the index pulse from
the encoder is received correctly. If not, replace the
Revolution encoder board
9
Calibration
weight signal is
bad. 75 gm calibration Weight is
not added during Inner and
Outer calibration Ensure that the 75 gm calibration Weight is added at
appropriate position during Inner and Outer
calibration sequence.