Bosch FWA 4630 Original Instructions Manual page 49

Description / message Possible cause
"Run-out compensa- The vehicle was moved too quick-
tion not successful (vehi- ly, not enough images.
cle moved too quickly)."
"Run-out compensa- The vehicle was moved too slow-
tion not successful (vehi- ly, too many images.
cle moved too slowly)."
"Check central posi- One or more boards not centered with re-
tioning of boards. spect to the wheel and / or track is uneven.
Make sure track is flat."
"Not enough marks de- Measurement board not in field
tected at Front/Re- of vision of cameras.
ar Left/Right mea- Marks/measurement board and/
surement board." or cameras contaminated.
Intense sunlight on sensors/boards.
"Incorrect alignment Boards not aligned with spirit level.
of certain boards." Sensors are not perpendicularly aligned with
the measurement bay or with the direction
of motor vehicle/commercial vehicle travel.
"Unit not properly set up One or more measurements
or outside tolerance." found to be inaccurate.
"Small boards not suita- boards not suita- not suita- The distance between the rear axle and the cen-
ble. Use large boards." ter of the sensor is too great for the small boards.
"Large boards not suit- The distance between the rear axle and the cen-
able. Use small boards." ter of the sensor is too small for the large boards.
Tab. 4: Fault and information messages
Robert Bosch GmbH
Maintenance | FWA 4630 | 49 | en
Remedy / action
Repeat run-out compensation. Move the ve-
hicle more slowly when doing so.
Repeat run-out compensation. Move the ve-
hicle more quickly when doing so.
Align the boards with the center of rotation of the
wheel. Make sure rolling distance is flat.
Ensure a clear field of vision between sen-
sors and measurement boards. Clean the mea- boards. Clean the mea- . Clean the mea-
surement boards and/or the cameras. Use par- boards and/or the cameras. Use par- and/or the cameras. Use par-
titions or the like to block out the sunlight.
Align boards with spirit level. Repeat lighting adjustment
Perform sensor alignment: Refer to the Com-
missioning document 1 690 706 006
Check the measurement accuracy by way of reverse mea-
surement (refer to 6.4.2). Consult the notes on position-
ing the sensors with respect to the vehicle (refer to 4.9).
Contact Service
Use large boards for commercial vehicles at the rear axle.
Use small boards (standard) at the rear axle.
1 690 706 005
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2011-05-11