Panasonic WJ-HDE300 Service Manual page 2

This service information is designed for experienced repair technicians only and is not designed for use by the
general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to
service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any
attempt to service or repair the product or products dealt with in this service information by anyone else could
result in serious injury or death.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK). NO USER
SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL.
here are special components used in this equipment which are important for safety. These parts are indicated
T
by the " Y " mark on the schematic diagram and the replacement parts list. It is essential that these critical
parts should be replaced with manufacturer's specified parts to prevent X-radiation, shock, fire, or other hazards.
Do not modify the original design without permission of manufacture.
Distribution of PbF PCB:
PCBs (manufactured) using lead free solder (PbF) will have a stamp on the PCB.
Caution:
8 Lead free solder has a higher melting point than standard solder. Typically the melting points is 35 °C – 40 °C
(95 °F – 104 °F) higher. Please use a soldering iron with temperature control and adjust it to 360 °C – 370 °C
(680 °F – 698 °F). In case of using high temperature soldering iron, please be careful not to heat too long.
8 Lead free solder will tend to splash when heated too high (600 °C / 1112 °F).
8 Lead free solder (Sn - 3.0Ag – 0.5Cu) or equivalents are recommended on repairing our lead free soldered PCB.
Y WARNING
This symbol warns the user that uninsulated voltage within
the unit may have sufficient magnitude to cause electric
shock. Therefore, it is dangerous to make any kind of contact
with any inside part of this unit.
This symbol alerts the user that important literature concerning
the operation and maintenance of this has been included.
Therefore, it should be read carefully in order to avoid
any problems.
IMPORTANT SAFETY NOTICE
About Lead Free Solder (PbF)