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- The original main power filter
capacitors.
- 原主電源濾波電容6800uF/25v。
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- The capacitors up grade to
10000uF/40v. & the Diode change to 4pcs of 1N5062.
- 主電源上的整流二極體改為Philips
PH5062、高品質金屬膜電容、濾波電容升級為P牌10000uF/40v。
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- +5V Regulator IC for D/A chip.
- 經檢查電路後發現這顆7805主要負責D/A
chip的+5V電壓的供應。
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- 直接可以使用本站內的VRM直接取代原來7805。(但實際測試結果因輸入電壓過高,LT1085上的溫度達90幾度,有過熱問題,後來還是改回原來的7805若空間容許,可以為7805加上散熱片。)
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- The original design of analog output
signal coupling are use series connection two capacitors.
- Change it to one Bi-polarized
type capacitors. (see below picture)
- 原Analog
output輸出交連電容是使用2顆有極性330uF/16v串聯來當作無極性電容使用。
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- Analog Output RCA socket change
to Gold plated RCA
socket.
- 連接導線為純銀單蕊導線。Use
pure silver wire to connected PCB & RCA socket.
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- Add a copper cover to D/A chip. It
can be reduce EMI noise.
- 為D/A chip加上隔離雜訊干擾用的銅塊。
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