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HTP-072
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4
A
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C
D
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F
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4
1. SERVICE PRECAUTIONS
1.1 NOTES ON SOLDERING
1.2 NOTES ON REPLACING PARTS
1.3 SERVICE NOTICE
• 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.
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
D-MAI
N
Assy
I
N
TERFACE IC
——————
IC with heat-pad
IC2012
D-MAI
N
1.2 V Power Supply IC
——————
IC with heat-pad
IC2013
D-MAI
N
1.8 V Power Supply IC
——————
IC with heat-pad
IC2015
DSP IC
——————
IC with heat-pad
IC2016
Low Dropout Power Supply IC
——————
IC with heat-pad
IC2017
APPLE AUTHE
N
TICATIO
N
IC
——————
IC with heat-pad
IC2020
D-MAI
N
5 V Power Supply IC
J126780500450-IL
IC with heat-pad
IC2211
D-MAI
N
3.3 V Power Supply IC
——————
IC with heat-pad
IC2213
D-MAI
N
5 V Power Supply IC
——————
IC with heat-pad
IC2214
ADJUSTABLE LDO REGULATOR J126238700010-IL
IC with heat-pad
IC400
Parts that is Difficult to Replace
Ref No.
Function
Part No.
Remarks
• Discharging
For more detail, please refer to "7. DISASSEMBLY - 1. Discharging".
Summary of Contents for HTP-072
Page 9: ...9 HTP 072 5 6 7 8 5 6 7 8 A B C D E F ...
Page 73: ...73 HTP 072 5 6 7 8 5 6 7 8 A B C D E F ...
Page 80: ...80 HTP 072 1 2 3 4 A B C D E F 1 2 3 4 C SIDE B CP2001 CP2000 Q2043 Q2041 IC2018 Q2038 ...
Page 81: ...81 HTP 072 5 6 7 8 5 6 7 8 A B C D E F C C D MAIN ASSY SIDE B CP2003 CP2006 CP2005 CP2200 ...