PRS-D1200SPL/XU/UC
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1. SERVICE PRECAUTIONS
1.1 SERVICE PRECAUTIONS
1.2 NOTES ON SOLDERING
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Service Precaution
1. You should conform to the regulations governing the product (safety, radio and noise, and other regulations),
and should keep the safety during servicing by following the safety instructions described in this manual.
2. Be careful in handling ICs. Some ICs such as MOS type are so fragile that they can be damaged by
electrostatic induction.
3. The area where the temperature gets high as a completely assembled product is the heat sink. As a unit, on
the other hand, sub-heat sink and the periphery of the sub-heat sink are the areas where the temperature
gets high.
4. There is a danger for electrical shock in the periphery of an area where “CAUTION High Voltage” is indicated
on the printed circuit board due to a high voltage being generated during operation. Therefore, be careful
when working around such areas.
5. The Holder Unit(CXC8183) cannot be used again when removing once. Please exchange it for new parts when you
remove the Holder Unit from the product. Reattachment of the Holder Unit having once peeled off may possibly leak
the light from an aperture generated by the weak adhesion of two-sided tape.
6. Since the secondary voltage is not discharged upon power-off of the product after the product operation check (some
residual voltage is left even after five minutes), forcibly discharge the voltage or conduct servicing after checking the
voltage with a tester.
7. When replacing the power FET or the output FET, parts connected in parallel need to be replaced at the same time.
NOTES ON SOLDERING
For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit.
Be sure to use lead-free solder and a soldering iron that can meet specifications for use with lead-free solders for repairs
accompanied by reworking of soldering.
Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 C.
Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 C in general, although
the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of
the soldering iron.
Compared with eutectic solders, lead-free solders have higher bond strengths but slower wetting times and higher melting
temperatures (hard to melt/easy to harden).
The following lead-free solders are available as service parts:
Parts numbers of lead-free solder:
GYP1006 1.0 in dia.
GYP1007 0.6 in dia.
GYP1008 0.3 in dia.
www. xiaoyu163. com
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TEL 13942296513 QQ 376315150 892498299
