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PSR-31(32)电子琴采用日本三洋公司LA4500作双功放,其引脚为双列20脚扁平封装。损坏后,可用日立公司的HA1392单列12脚直插式双功放集成块代换。原电子琴的空间高度完全满足改装要求。HA1392在电压为+15V时,输出功率为6.8W×2,+12V时为4.3W×2,外围元件比LA4500少用4个电容,改装后这4个电容可留在原位置,以备后用。代换方法:在原LA4500两排插脚的中间空间内,顺排脚方向用废钢锯条折断后的刃口将印制板划穿长
PSR-31 (32) The keyboard uses Japan’s Sanyo LA4500 for bi-amping, and its pinout is a dual 20-pin flat package. Damaged, available Hitachi HA1392 single 12-pin in-line bi-amp manifold replacement. The original height of the keyboard fully meet the requirements of the conversion. HA1392 at a voltage of +15 V, the output power of 6.8W × 2, +12 V when 4.3W × 2, the external components less than the LA4500 with four capacitors, modified four capacitors can be left in place for future use . Replacement method: In the original LA4500 two rows of pins in the middle of the space, along the direction of the foot with the scrap saw blade after cutting the blade across the long