Service Precautions; Notes On Soldering; Notes On Replacing Parts - Pioneer SC-LX81 Service Manual

5

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 ON REPLACING PARTS

The part listed below is difficult to replace as a discrete component part.
When the part listed in the table is defective, replace whole Assy.
ASSY NAME PCB ASSY Part No.
HDMI NETWORK SC-LX81: AWX9234
ASSY SC-LX71: AWX9235
5
6
Parts that is Difficult to Replace
Ref No. FUNCTION
IC101 HDMI Receiver
IC701 MEDIA Processor
IC791 iPod Co-Processor
SC-LX81
6
7
Part No.
SII9135CTU IC with heat-pad
DM850E IC with heat-pad
341S2154 IC with heat-pad
7
8
A
B
C
Remarks
D
E
F
5
8