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PD-30-K
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1. SERVICE PRECAUTIONS
1.1 NOTES ON SOLDERING
1.2 WHEN REPLACING MECHA ASSY
• 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 NOT 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.
Fig. 1
Pickup PCB
Soldering short land
Short circuit using a soldering iron.
[ Removing the MECHA Assy ]
Before removing Pickup PCB and MAI
N
PCB Assy flexible cable, short circuit the two positions shown in Fig. 1 using
a soldering iron. If you remove the flexible cable with no soldering, the Laser may be damaged.
[ Installing the MECHA Assy ]
• Remove the soldering on the short circuit position after the connection of Pickup PCB and MAI
N
PCB Assy flexible cable.
Note:
• Use the Lead Free solder.
• Manual soldering conditions
Soldering temperature: 320 ± 20°C
Soldering
time:
W
ithin 3 seconds
Soldering combination: Sn-3.0Ag-0.5Cu
•
W
hen Soldering/Removing of solder, use the draw in equipment over the Pickup Unit to prevent the Flux smoke from it.
