Panasonic MC-BJ870-S149, Service Manual

Page: 33 / 72

33
7 Disassembly and Assembly Instructions
Precautions
1. When disassembling parts, first check the state of the assembled parts and the wiring (layout) and be sure to return them to
their proper state after completion of repairs.
2. Handle disassembled parts and packing, etc. with care, and if anything becomes damaged replace it with a new part.
3. After completion of repairs, inspect the area around the repair site to make sure that nothing else has become degraded and
that the wiring is all correct. Along with performing a test operation, make sure that the following safety items are secure.
• Insulation resistance
Check that insulation resistance is at least 10M Ω when a direct current of 500V is run between both terminals of the power
cord and the DC plug.
• Dielectric strength
Check that it withstands the voltage when an alternating current of 3kV is run between both terminals of the power cord and
the DC plug for one minute.
4. When carrying out repair services, do not modify any of the devices, components or materials.
5. If a wiring unit is provided as a spare part, even if only a part of the wiring is burnt out, do not attempt to repair and reconnect
the wire, but replace the whole wiring unit.
6. Pull or push faston terminals straight off or on, without prying.
7. When handling the P.C.B, be careful not to press hard on any of the components.