Service Precautions; Notes On Soldering - Pioneer DVH-P500UB Service Manual

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1. SERVICE PRECAUTIONS

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1.1 SERVICE PRECAUTIONS
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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.
Be careful in handling ICs. Some ICs such as MOS type are so fragile that they can be damaged by electrostatic
induction.
area and a heat sink becomes hot areas. Be careful not to burn yourself.
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L 13942296513
- DVD section precaution
1. Before disassembling the unit, be sure to turn off
the power. Unplugging and plugging the connectors
during power-on mode may damage the ICs inside
the unit.
2. To protect the pickup unit from electrostatic discharge
during servicing, take an appropriate treatment
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(shorting-solder) by referring to "the DISASSEMBLY" .
3. After replacing the pickup unit, be sure to skew
adjustment.
4. During disassembly, be sure to turn the power off since
an internal IC might be destroyed when a connector
is plugged or unplugged.

1.2 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.
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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
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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.
F
GYP1007 0.6 in dia.
GYP1008 0.3 in dia.
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