Stromberg-Carlson-Co-1204 电路原理图.pdf

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1、MANUAL OF 1949 MOST-OFTEN-NEEDED RADIO DIAGRAMS STROMBERG-CARLSON SERVICE NOTES AC-DC RADIO RECEIVER NO. 1204 SERIES.NO. 1011 Ih xj “5 I L_- I u u 9 U o 2 o o o a y N 3 * y i i 0 S -c r K P O 2 CQ CO w X N N S | -8 0 to 2 a * o. c . co a. 收音机爱 好者资料库 RadioFans.CN MANUAL OF 1949 MOST-OFTEN-NEEDED RADI

2、O DIAGRAMS STROMBERG-CARLSON ALIGNMENT PROCEDURE 1204 Band and Pointer Setting Generator Setting input and Dummy VTVM Connection and Scafe Trimmer Adj. and Notes A.M. I.F. ALIGNMENT (1) AM-Pointer near middle of dial 455 kc. 400 cy. mod. Junction C-13, 6 and L-8 200 mmf. dummy Junction C-31, 35 3VDC

3、 scale Adj. Pri. and Sec. cores two AM IFf transformers fop of chassis. Highest voltage F.M. I.F. ALIGNMENT (1) FM-Pointer near middle of dial 10.7 me 400 cy mod. Junction C-10, 16 and L-3 AVC buss (Green and White Wire) 3VDC scale Detune Sec. Ratio Det. Transformer adjust four FM IF cores, bottom o

4、f chassis, in following order counting from band switchOne, Four, Two Three for highest voltage. DO NOT REPEAT (2) Adjust Pri. Ratio Det. Transformer for highest voltage. (3) Center terminal audio switch 3 VDC scale Adjust Sec. Ratio Det. Transformer for ZERO voltage. (4) Repeat (2) and .(3) A.M. R.F. ALIGNMENT Measurements are made at 117V line, using electronic Voltmeter. Except where otherwise indicated, voltages are D.C. and are positive with respect to the reference point which is the chassis. 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN