Wbe 4120 Dt - Bosch WBE 4120 Instructions De Réparation

en 48 | WBE 4120 / WBE 4120 D / WBE 4120 DT | Problems and error codes
3.2

WBE 4120 DT

Faults Causes
The displays 1. Defective fuse or missing phase
do not light on 2. Damaged fuse in electrical connection
switch-on 3. Damaged fuse in control/display panel
1 1. Setting and calibration data lost from PCB memory
2. One or more calibration operations (setting, calibrati-
on of electronic vernier caliper/Angular width gauge)
not performed
2 Wheel guard raised prior to completion of measurement
3 1. Backward rotation of wheel on start of measurement
2. Incorrect connection of motor
4 1. No motor operation, motor does not attain the neces-
sary speed
2. Fault in electrical connection
3. Fault in PCB
5 1. Balance weight not attached to wheel
2. Measurement sensors not correctly connected
6 1. Wheel guard not lowered
2. Damage to wheel guard safety switch
7 Excessive phase difference between the 2 measurement
sensors
8 Inner measurement sensor not correctly connected, de-
fective or open circuit in wire
9 Outer measurement sensor not correctly connected, de-
fective or open circuit in wire
10 1. Measurement sensor for position recognition defective
2. No motor operation
11 1. Measurement sensor for phase recognition defective
2. No motor operation
17 Weight outside setting range (weight required for balan-
cing is more than 250 g)
18 Wheel data not entered
19 Input signal of right measurement sensor
lower than that of left sensor
20 1. Pedal pressed during measurement
2. Irregular rotational speed of motor
3. Wheel speed below minimum value
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1 695 600 579 2016-08-02
Remedy
1. Check the mains connection.
2. Replace the fuse in the electrical connection.
3. Replace the fuse in the control/display panel. In-
form customer service.
Caution: Repeated fuse damage is an indication of a
malfunction.
Check and correct calibration and settings.
Wait for end of measurement before raising wheel
guard.
1. Check that wheel is stationary on starting and stop
it turning backwards on starting.
2. Check proper connection of motor.
1. Check mains voltage (probably too low).
2. Check electrical connection or power cord.
3. Replace the PCB.
1. Repeat calibration from the start and attach balan-
ce weight as specified by the process.
(refer to 13.3 ).
2. Check the connection of the measurement sensors.
1. Lower wheel guard with wheel attached.
2. Replace wheel guard switch.
1. Check for correct attachment of calibration weight.
2. Check machine connection; WBE 4120 / WBE 4120 D / WBE 4120 DT probably
not stable and vibrating excessively.
3. Check contact between measurement sensor and
PCB.
4. Replace measurement sensor.
5. Replace PCB.
1. Check connection of left measurement sensor.
2. Replace measurement sensor.
1. Check connection of right measurement sensor.
2. Replace measurement sensor.
1. Check connection of light barrier PCB.
2. Check that the light barrier PCB is protected
against light and provide a cover if necessary.
3. If the fault persists, check and if necessary replace
the light barrier PCB.
4. Check the mains connection.
1. Check connection of light barrier PCB.
2. Make sure the light barrier PCB is protected
against light and provide a cover if necessary.
3. Check and if necessary replace the light barrier
PCB.
4. Check the mains connection.
1. Check whether the wheel is correctly attached to
the flange.
2. Determine the outer weight position (neverthel-
ess), attach a 100 g weight and start a different
measurement.
Enter wheel data before performing measurement.
Interchange the connections of the two measure-
ment sensors.
1. Do not press pedal whilst motor is in operation.
2. Make sure the WBE 4120 / WBE 4120 D / WBE 4120 DT is not subjected to any
impact during measurement.
3. Check mains voltage (probably too low).
Bosch Automotive Service Solutions GmbH