CBS-Columbia-400 电路原理图.pdf

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1、ANTENNA JACK VOLUME R-20, MOST-OFTEN-NEEDED I960 RADIO SERVICING INFORMATION COLUMBIA MODEL 400 to C=3 *rf|o-Wo SERVICING To prevent damage to transistors when replacing battery, shut off the on-off switch. Also be certain of proper polarity connection. In measuring resistances it is advisable not t

2、o use a high voltage type ohmmeter; also connect the positive side of the ohmmeter toward the circuit ground. Complete circuit resistance, with battery disconnected, is about 500 ohms measured across the battery clips . MU). o I . .00 I ro ro lt lo H tn 5 to 2 CQ c 0 1 (0 2 u H 6 u l-J U -4- O o S 6 ro lo co co lo a CM 0O LO tO LO LO LO W CO W CO CSJ CM CM CM HH H. 2 - ,5 p -H o u 3 g D O O - O 30 收音机爱 好者资料库 RadioFans.CN