Electronics; Exchanging The Pcb Set - Sartorius Basic plus Service Manual

Important note:
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Electronics

Should there be any defect in the electronics of your Basic
should not attempt to repair individual components, but rather exchange the
entire PCB set (204). The three PCBs together (A,B,C) form a complete unit.
The PCB set (204) is factory-programmed and the PCB-specific data are
written onto the AOC (IC 021). Any attempted repair of the PCB would ruin
these data.
In addition, the 3 PCBs (A,B,C) are installed as SMD (surface mounted
devices). Replacing one of these parts would require special tools.

Exchanging the PCB Set

The PCB set (204) (3 PCBs) (a,b,c) can only be exchanged as a complete unit
at an authorized repair center.
Note:
In order to replace the PCBs set, you need to order a pre-programmed
replacement PCB. Always include the balance model and serial number with
your order.
After installation, perform the function: SAVE / LIN / CAL / CLOSE with a
PSION and the Sartorius MC1 Server (version 4.4 and later).
- Open the balance (see page 27).
- Disconnect all plugs (e.g. system connector- (ST.3), weight application sub-
assembly plug, etc.) from the PCB (204b).
- Remove the locking screws (204c) from the data out put port.
- Remove the fastening screws (D) that fasten the analog PCB (204b); the
data output PCB (204c) and, if present, the multiplier resistor, from the base
plate (110).
- Remove the PCB set (204) from the base plate (110).
balance, you
plus