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一台日立 CEP—321D 型彩电,因不慎造成彩管破碎,瓷基视放板也裂为两块。原机彩管型号为470NYB2(细颈),因无原件可换,决定用国产46cm(18英寸)彩虹牌粗颈管(47SX101Y22—DC05)代换,两管除管颈尺寸不同外,日立管的聚焦电压、阳极高压均比彩虹管高,加之日立机无枕校电路,代换中注意以下几点:1.用一块适合该管脚接线的成品视放板代换原视
A Hitachi CEP-321D-type color TV, due to carelessness caused by CPT broken porcelain-based plate is also split into two. The original color tube model 470NYB2 (narrow neck), because there is no original change, decided to use the domestic 46cm (18 inches) Rainbow brand thick neck (47SX101Y22-DC05) substitution, the two tubes in addition to different neck size, Hitachi tube Focus voltage, anode voltage is higher than the rainbow tube, coupled with Hitachi no pillow school circuit replacement pay attention to the following points: 1. With a piece of the product suitable for the pin terminal board replaces the original video