Enc - Bosch WBE 4120 Instructions De Réparation

Auto-diagnosis menu(WBE 4120 /WBE 4120 D) | WBE 4120 / WBE 4120 D / WBE 4120 DT | 53
If we check the ratio between the pick ups and the dif-
ference of phase and we find values out of tolerances,
we must substitute the board (chapter 9) or substitute
the sensors of the pick-ups (chapter 8.4.2).
6.2

Enc

It indicates the function to directly check the encoder:
the number of spaces goes from 0 to 255.
To enter the menu, when you see Test (see above),
press "SET" again.
Left Display Right Display Description
Enc
NOTES FOR THE ASSISTANCE:
The malfunctioning of the tool is detected automatically
by the programme that will show on the display "Err
10" or "Err 11", showing also on the board the notice
"enc". Verify the cause of the defect to correct the
problem properly (see the picture).
Defect Correction
The machine does + Check that there is no dust in the discs.
not get at 256 + Check that the discs are intact.
spaces.
The machine does Check that the encoder is connected.
+
not count any + Substitute the encoder (code 653272).
space.
6.3 Sp
The abbreviation indicates the function that directly
controls the speed that (turns/minute) the shaft
achieves. If you close the carter and press "START", it
is possible to check the speed achieved during the bal-
ancing phase (167±5 turns/minute).
Left Display Right Display Description
SP
NOTES OR THE ASSISTANCE:
Here you can find the most common defects of the en-
gine:
Bosch Automotive Service Solutions GmbH
It shows the position of the encod-
er from 0 to 255
Speed in turns/minute of the shaft
Defect Correction
The wheel does + Check the electric connections.
not turn. + Substitute the engine (code 654370).
The engine does Check the tension of the drive.
+
not achieve the + Substitute the engine (code 654370).
balancing speed.
Check that the en-
coder is connect-
ed.
The wheel does + Check and, if necessary, substitute the
not brake (in coun- condenser (code 653095).
ter current direc- + Check and, if necessary, substitute the
tion). main board (code 654044). (Paragraph
Substitution of the board)
6.4 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
6.4.1 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.
Reading analog entry external pick-
up
Reading analog entry internal pick-
up
Reading analog entry external en-
larged pick-up
Reading analog entry internal en-
larged pick-up
NON USED
Reading distance potentiometer
NON USED
Reading diameter potentiometer
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1 695 600 579 2016-08-02
en