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D8MW
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Information for service about the lead-free solder introduction.
Hitachi introduced lead-free solder to conserve the “Earth Environment”.
Please refer to the following before servicing.
(1) Characteristic of lead-free solder
Melting point of lead free solder is 40-50°C higher than solder containing lead.
(2) Solder for service
Following composition is recommended.
“ Sn - 3.0Ag - 0.5Cu “ , or “ Sn - 0.7 Cu “
Lead solder can be used, but there is a possibility of failure due to insufficient strength of the solder.
Caution when using solder containing lead.
Please remove previous solder as much as possible from the soldering point.
When soldering, please perfectly melt the lead-free solder to mix well with the previous solder.
(3) Soldering iron for lead-free solder.
Melting point of lead-free solder is higher than solder containing lead.
Use of a soldering tool “with temperature control” and “with much thermal capacitance” is recommended.
(Recommended temperature control : 320°C - 450°C; [608°F - 842°F])
Recommended temperature
PWB with chip parts 320°C +/- 30°C (608°F +/- 86°F)
PWB without chip parts 380°C +/- 30°C (716°F +/- 86°F)
Chassis, metal, shield etc. 420°C +/- 30°C (788 °F +/- 86°F)
(4) Identification of lead-free PWB
2004 models >> lead-free solder is introduced
2006 models >> lead-free solder applied
On lead-free PWB, “F” is added at the beginning of stamp on PWB.
Summary of Contents for UltraVision UT47V702
Page 43: ...D8MW 42 Wiring Diagram page 11 ޣݘ GHV ENQUGWR ޤ 52 52 0 5 052 8 ...
Page 44: ...D8MW 43 Wiring Diagram page 11 9 ޣݙ GPVTCN NGHV ENQUGWR ޤ GPVGTNKPG 52 5 52 52 ...
Page 45: ...D8MW 44 Wiring Diagram page 11 10 ޣݚ GPVTCN TKIJV ENQUGWR ޤ GPVGTNKPG 52 27 KNVGT QCTF ...
Page 46: ...D8MW 45 Wiring Diagram page 11 11 ޣݛ 4KIJV ENQUGWR ޤ 52 052 ...
Page 47: ...D8MW Final assembly guide 10 46 1 ...
Page 48: ...D8MW Final assembly guide 10 47 2 ...
Page 49: ...D8MW Final assembly guide 10 48 3 ...
Page 50: ...D8MW Final assembly guide 10 49 4 NAA3041K Left Right frame ...
Page 51: ...D8MW Final assembly guide 10 50 5 ...
Page 52: ...D8MW Final assembly guide 10 51 6 ...
Page 53: ...D8MW Final assembly guide 10 52 7 ...
Page 54: ...D8MW Final assembly guide 10 53 8 ...
Page 55: ...D8MW Final assembly guide 10 54 9 ...
Page 56: ...D8MW Final assembly guide 10 55 10 Terminal Cover PH46521K ...
Page 89: ...D8MW PRINTED CIRCUIT BOARDS 88 page 1 5 Main board components side ...
Page 90: ...D8MW PRINTED CIRCUIT BOARDS 89 page 2 5 Main board solder side ...
Page 93: ...D8MW PRINTED CIRCUIT BOARDS 92 page 5 5 Filter board Component side Filter board Solder side ...
Page 96: ...PA NO 0240 MADE IN MEXICO ...