Fisher & Paykel AD55 Series, Service Manual, Page: 22 / 28

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REMOVAL AND HANDLING
E.S.D –
Static Electricity is known to us all by the
occasional electronic shock felt when leaving
a car or the annoying “static cling”. This
same phenomenon known as Electrostatic
discharge (ESD), can seriously damage
electronic components. The voltages
required to damage electronic components
are much lower than those, which can be felt
by humans.
Like all Electronic Assemblies, the ED55/56
PCB Assemblies are susceptible to damage
due to ESD. Some basic handling
procedures must be followed to reduce the
risk of damage due to ESD.
1. The PCB Assemblies must be transported
and stored inside the bag and box they
were supplied in.
2. When handling the PCB Assemblies use
an earth strap attached to the dryer you
are working on. These earth straps are
available from Customer Services.
Packaging & Transportation –
The ED55/56 PCB assemblies are sent in a
black or dark coloured plastic bag. This is
not a normal plastic bag but a special bag
designed to protect the PCB against ESD.
The box has been designed to offer
maximum protection against physical
damage to the PCB assembly.
Whenever the ED55/56 PCB assemblies are
transported they must be packaged in the
bag and cardboard box.
FAILURE TO DO
SO MAY RESULT IN CANCELLATION OF
YOUR CREDIT.
Connectors –
The ED55/56 has 10 connections onto the
PCB Assembly. 8 via the terminal strip
mounted adjacent to the transformer, plus
two connectors located on one edge of the
PCB.
Three types of connectors will be used on the
ED55/56 Dryer.
1. Standard Flag Terminal: The can be
identified by clear plastic insulator. These
will be used for early production. Care
must be taken when applying and
removing them form the PCB terminal
block.
DO NOT USE EXCESSIVE
FORCE ON THE PCB. If necessary, the
terminals can be removed by using a pair
of long nosed pliers and levering the
terminals off using the relays as a pivot.
2. Positive Lock: They can be identified by
the hard plastic insulator. These by the
hard plastic insulator. These terminals
are designed for easy application and
removal. These connectors lock on to the
terminal. To remove the connector the
insulator must be gripped. DO NOT TRY
TO REMOVE THE TERMINAL BY
PULLING AT THE WIRE.
3. The connectors used for the exhaust
sensor and the door switch harness have
to be gripped by the locking tabs on each
side of the connector. DO NOT pull on
the wires when trying to remove the
connector. These connectors will only fit
on one way. Do not try and force it on
incorrectly.