Plockmatic BM500 - General Cautions

Plockmatic BM3050 system 27 August 2019 3. Repairs and adjustments (REP and ADJ)
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General cautions
WARNING:
Unless instructed otherwise, turn off the main power and unplug the machine before attempting any
of the procedures in this section.
To avoid hazardous situations like for instance electric shock or danger while exposed to moving,
rotating or cutting devices, exercise extreme care when operating modules with covers, guards or
protection removed or when electrical or mechanical interlock devices are overrided or bypassed.
CAUTION:
ESD Hazard! ESD (Electrostatic Discharge) can cause hardware crashes, data and/or communica-
tions problems.
Failure to use proper ESD procedures will cause damage to electronic components (example:
PCBs). ESD problems can be minimized by maintaining all machine ground connections, ensuring
the proper handling of circuit boards/ sensors.
Use ESD protection when working near PCBs. Failure to use ESD protection is likely to result in a
PCB failure.
Using the ESD Ground Strap
Purpose
The purpose of the ESD (Electrostatic Discharge) ground strap is to preserve the inherent reliability
and quality of electronic components handled by the Service Representative. The strap should be
used whenever handling the circuit boards or any other ESD sensitive components.
Procedure
NOTE:
All procedures requiring use of the ESD ground strap will contain a caution referring to this proce-
dure.
1. Switch off the main power switch.
2. Make sure the power cord connects the machine to the wall outlet.
The power cord and wall outlet must have ground.
3. Connect the claw end of the grounding cord to a chassis ground, such as earth wires
screwed to chassis ground, unpainted frame or an unpainted bracket secured to the frame.
4. Connect the snap end of the blue cord to the snap on the adjustable wrist strap.
5. Place the adjustable wrist strap securely on the wrist.
Wait for one minute to let the electrostatic be discharged from your body.
6. ESD sensitive components can now be handled without causing any ESD related damage.
7. New replacement PCBs and ESD sensitive components, as well as old defective PCBs should
be handled during unpacking and repacking using the ESD ground strap. During the transfer
from or to the packaging material, the PCB should be placed on the ESD bag the replacement
PCB came in.