Bosch WBE 4110 Instrucciones De Reparacion página 26

en 26 | WBE 4110 | Auto-diagnosis menu
The wheel does + Check and, if necessary, substi-
not brake (in tute the condenser (code 653095).
counter cur- + Check and, if necessary, substitute
rent direction). the main board (code 654044). (Par-
agraph Substitution of the board)
8.4 A
Page for the monitor of analog entries.
From this menu you can directly read the signal that
comes from the sensors (pick-ups and potentiometers).
This means that you can identify the cause of the de-
fect.
Here you have a summary of the functions:
Left Display Right Display Description
A0 510
A1 510
A2 510
A3 510
A4 ###
A5 200
A6 ###
A7 200
8.4.1 A0
Signal of the external pick-up.
The piezoelectric sensor reads a strength variation.
During the checking phase, verify that:
+
the value of rest is in the middle of the reading scale;
+
if you push the shaft down, the value increases up to
the end of the scale;
+
if you lift the shaft up, the value decreases to zero.
8.4.2 A1
Signal of the internal pick-up.
Now the sensor is mounted in the other position.
During the checking phase, verify that:
+
the value of rest is in the middle of the reading scale;
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1 695 654 756 2008-10-17
Reading analog entry ex-
ternal pick-up
Reading analog entry in-
ternal pick-up
Reading analog entry ex-
ternal enlarged pick-up
Reading analog entry inter-
nal enlarged pick-up
NON USED
Reading distance potentiometer
NON USED
Reading diameter potentiometer
+
if you push the shaft down, the value decreases to
zero;
+
if you lift the shaft up, the value increases up to the
end of the scale.
NOTES OR THE ASSISTANCE:
The sensors (code 654432) are identical and in order to
distinguish them during the production, they mount the
red pick-up outside and the black one inside.
Here you can find some examples and possible solu-
tions:
Defect
One of the pick-ups reached
the saturation point: the
tension is 0 or 1024.
You can see the difference
between the rest values:
ex. Internal 510 (from 480
to 550 OK) - External 430.
The machine often
needs to be set.
During the assistance, if you have the opportunity, we
suggest substituting the main board (chapter 9) of the
machine as it is a easier and quicker procedure than
the substitution of the pick-ups. If the problem persists,
even after the substitution of the board, mount again
the old board and substitute the sensor/s as explained
here. The only difference between the tension adjust-
ment and the substitution of the pick-up is that in the
second case you replace the sensor with a new one.
Procedure of adjustment or substitution of the pick-up:
€
Remove the carter;
€
Extract the entire measure group from the machine:
« Loose the drive belt and remove it;
« Unscrew the 4 Allen screws that keep it in the cor-
rect position;
€
Loose the locking nut put under the pick-up;
Correction
+ Substitute the board.
+ Substitute the pick-up.
+ Reposition the pick-ups.
+ Substitute the pick-up (in
our case the external one).
+ Reposition the pick-ups.
+ Substitute both the pick-ups.
Robert Bosch GmbH