Energolux SAP24P1-A, Service Manual

Page: 39 / 46

Technical Manual of Energolux Air Conditioner
PCB check
The cautions during the spare parts replacement process
1. In case of the static-electricity of the human body may affect the safety operation, be
sure of the earthing cable is well connected before starting service and spare parts
replacement. Make sure that the static-electricity of the operator’s body is released
completely (confirm whether the wrists are with the effective earthing ring) before
touching any microcomputers or integrated circuits.
2. Make sure there is a insulation mat available when repairing the spare parts with
electricity on
the workbench, and prohibit any metal scrap on the insulation mat. Any contact between
the metal scrap may lead to damage of the electric component.
3. Before replacing any components, be sure the power is cut off. Any operation with
electricity
may cause the electricity shock, short circuit and other accidents.
4. Make sure whether there is jump line or not on the surface of the circuit board and the
position
of the diode is proper during the electric components’ replacement or repairing process.
Any
roughness treatment on the circuit board may cause the damage of the leads and
components
because of the force bending and shaking.
5. Make sure to clean the leads and substitute parts well by sandpaper or same kind of
materials
before welding, otherwise the welding materials may fail to stick to the leads and spare
parts
because of the oxidized surface.
6. Please don’t weld the leads and parts using the large power electric-iron for long time,
otherwise the parts with low heat-resistance value may easily be damaged.
7. Make sure the heat of the electric iron be transmitted to the whole body of the object
to be
welded, otherwise the welding work may not be done properly.
8. The quantity of the welding material shall be used as less as possible to avoiding the
faults happen to the circuit.
39