Pioneer CDJ-850, Руководство по обслуживанию, Страница: 6 / 122

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1. SERVICE PRECAUTIONS
1.1 NOTES ON SOLDERING
1.2 ABOUT POWER SUPPLY MONITORING
• 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 ºC.
Therefore, for lead-free soldering, the tip temperature of a soldering iron must be set to around 373 ºC 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.
Do N OT use a soldering iron whose tip temperature cannot be controlled.
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.
This unit always monitors for power failure and will shut itself off immediately after an error is detected. If an error is generated,
the STA
N DBY LED will flash after the unit shuts itself off. After the unit shuts itself off because of an error, unplug the AC power
cord and wait 1 minute before turning the unit O N by pressing the STA N DBY/O N key.
Repair the unit, according to “5.5 ABOUT POWER SUPPLY MO N ITORI N G.”