49
Aut12628.jpg
E
D
F
AUT12754a.JPG
AUT12423.JPG
G
H
Replacing the PCB
In the case of defects, do not attempt to make any repairs at the component
level, but replace the entire subassembly.
Note: Before replacing the main PCB, use the service software to read out
and store the balance/scale’s data record, if possible. If this is not
possible, order a pre-programmed PCB, indicating the balance/
scale model and serial number.
– Open the balance/scale (see page 48).
– Disconnect all cables.
– Remove the fastening screws (G) from the main PCB.
– Remove the old PCB
– Take the zero-point offset resistor from the old PCB and place it on the new
PCB
– Follow the above instructions in reverse order to install the new main PCB
– The balance/scale must now be programmed with the required data record
(unless you have installed a pre-programmed PCB)
– The following values must be checked and, if necessary, adjusted:
– Zero-point offset
– Linearity
– Span
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