Service Precautions; Notes On Soldering; Notes On Replacing; Caution - Pioneer VSX-LX52 Service Manual

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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.
A
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).
B
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

The part listed below is difficult to replace as a discrete component part.
C
When the part listed in the table is defective, replace whole Assy.
ASSY NAME PCB ASSY Part No.
DIGITAL MAIN
ASSY

1.3 CAUTION

D
• Discharging
Please refer to page 52, "Preparations Before Perfoming Diagnosis of the POWER AMP Assy".
• Ground Points
Please refer to page 53, "Ground Points".
E
F
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Ref No.
IC800
AWX9420
IC1501
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Parts that is Diffcult to Replace
FUNCTION
EMMA2RL2 UPD61283F1-407LU2A
HDMI Receiver SII9233ACTU
VSX-LX52
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Part No. Remarks
BGA
IC with heat-pad
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