1. SERVICE PRECAUTIONS
1.1 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 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.
1.2 NOTES SPECIFIC TO THIS PRODUCT
1. Notes before starting repair
• The high-gloss resin parts of the exterior of this product are easily scratched. During disassembly and reassembly of this
product, be careful not to scratch the exterior.
• If the door of this product is pressed firmly from the front or when the KEY Assy and LED Assy are reassembled, print of the
front-panel operating section may be transferred to the inside surface of the door. To avoid this, be sure to attach the protect
film to the inside surface of the door before repairing. If protect film is not available, slip a cleaning cloth or the like inside the
door for protection.
• Remove the attached protect film after product installation is completed. If the repaired product is to be delivered to the
customer' s home or a dealer, leave the protect film attached.
2. Note on Disassembly/Reassembly
1) Fixing screws for the HDMI connector and system cable connector
For tightening the screws for the HDMI connector and system cable connector, do not use an electric screwdriver. Tighten
them manually. If they are tightened too forcefully with an electric screwdriver, the screw heads may be damaged, in which
case the screws cannot be loosened/tightened any more.