Replacing Electronics - Seca 334 LC Service Manual

Replacing Electronics

5 Replacing Electronics
To replace faulty or defective electronics, proceed as follows:
Attention:
The electronics system of the scale includes electrostatically sensitive
components!
To replace faulty or defective electronics, proceed as follows:
 Check that both the workplace and the person replacing electronic components
conform to the relevant ESD protection measures!
 The scale must be de-energised before the electronics are replaced. To do so,
remove inserted batteries and/or disconnect the power pack.
 Release all screwed connections on the electronics as appropriate to make
unsoldering of the supply leads easier.
 Only ever unsolder one cable on the electronics component to be replaced and
solder it back onto the new component at the relevant solder contact immediately
afterwards. This ensures that you do not solder leads to the wrong contact.
 Check all soldered connections for contact stability and accidental short-circuiting
with adjacent contacts and correct if necessary.
 Secure the electronics in the scale in position using screwed contacts.
03.04.2013/JEG 21 (24)
seca
30-34-00-864