RCA-Victor-Co-Inc-9XL1 电路原理图.pdf

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1、TO PILOT LAMP VOLUME R-18, MOST-OFTEN-NEEDED 1958 RADIO SERVICING INFORMATION rca Victor 9-XL-1 Series Chassis No. RC-1167A TO REMOVE BACK COVER 1. Loosen screw at bottom-center of back cover and move slide upward out of slot in cabinet 2. Tilt outward to free interlock contacts, then drop from top

2、grooves. Avoid strain on loop connections. REMOVAL OF CHASSIS 1. Pull off volume control and tuning knobs. 2. Remove back cover. 3. Remove two screws holding dial assembly to cabinet. LEAD DRESS 1. Leads from the chassis to the speaker should be dressed between the electrolytic capacitor and the lef

3、t end of the cabinet. ALIGNMENT PROCEDURE Step Connect the high side of test-oscillator to Tune tesl-osc. to Turn radio dial to Adjust the following for max. output 1 12BA61-F grid through 01 mfd. capacitor Quiet- point 1.600 kc end of dial T2 (top) 2nd I-F Irons 2 Stator of Cl-B through .01 mfd 455

4、 kc T1 (top and bottom) 1st I-F trans 3 1,620 kc Gang fully open osc. trimmer Cl-A 4 Short wire placed near loop to radiate signal 1,400 kc 1,400 kc signal ant. trimmer Cl-B 5 600 kc 600 kc signal osc coil T-4 (rock gang) 6 Repeat steps 3, 4, and 5 12BE6 12BA6 12AV6 S0C5 157 收音机爱 好者资料库 RadioFans.CN