Sears-Roebuck-and-Co-139150 电路原理图.pdf

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1、MANUAL OF 1946 MOST POPULAR SERVICE DIAGRAMS SILVERTONE POWR SHIFTR Sears, Roebuck & Co. Chassis 139.150 IMPORTANT - READ CAREFULLY The A supply of this power unit Is supplied through s dry disc rectifier. If the radio cessee to operate or drops off In performance, It may be due to s chemical change

2、 In this rectifier. This may oauee the B voltage to drop low enough to affect the performance of the receiver. To reactivate the rectifier It Is only necessa ry to short (connect together) the A plus end A minus of plug or terminals of socket for a period of 4 minutes. The high temperature developed

3、 In the rectifier during this pe riod hae the tendency to reetore the dlsce to their normal rectifying capacity. The unit will not be harmed by this process. This deactivated condlton Is more likely to occur In the rectifier when the power unit has been out of service for some length of time (4 mont

4、hs or more). PART NO. PARTS LIST SCHEMATIC LOCATION DESCRIPTION J 1059_T1_ J 1060_Cl_ J 2933-RA_ J 1061_LI_ J 1435-L2 L3_ J 2036-C2 C3 C4_ J 2037_C5 C6_ J 5538_SY_ J 1841_ J 1062 _ J 5442_ POWER TRANSFORMER LINE COND. .01 MFD. 400V RECTIFIER B CHOKE A CHOKE A FILTER CONDENSER 1500 MFD. - 3V B FILTER CONDENSER DUAL 8 MFD. - 150V CORD, SWITCH * PLUG COMBINATION PANEL SOCKET TUBE SOCKET TAP CHANGE PLUG SEARS, ROEBUCK AND CO. 6J5GT COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN