RCA-Victor-Co-Inc-9US5H 电路原理图.pdf

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1、Circuit Board Wiring and Components View from Wiring Side VOLUME R-18, MOST -OFTEN-NEEDED 1958 RADIO SERVICING INFORMATION o O Step Connect the high side of test-oscillator to Tune test-osc. to Turn radio dial to Adjust the following for max output 12BA6 I-F grid through .01 mfd. capacitor 455 kc Qu

2、iet- point 1.600 kc end of dial T2 (top) 2nd 1-F trans. Stator of Cl-B through .01 mfd. T1 (top and bottom) 1st I-F trans. Short wire placed near loop to radiate signal 1.620 kc Gang fully open osc. trimmer Cl-A 1,400 kc 1,400 kc signal ant. trimmer Cl-B 600 kc 600 kc signal osc, coil T-4 (rock gang

3、) Repeat steps 3. 4. and 5 -x. tr otr o o zo OH o _l O xo tr uj 0.2 uj z h- Z o z o o 1- ) rcaVICT0R Models 9-US-5H, 9-US-5KE Chassis No. RC-1170A REMOVAL OF CHASSIS 1. Remove two screws at ends of chassis compartment panel. 2. Pull on attachment cord to separate cord from interlock con tacts which

4、are attached to the cabinet. 3. Unsolder three speaker leads and two loop antenna leads. 4. Unsolder record changer audio leads (yellow black and shield). 5. Unsolder two record changer power leads and interlock leads from terminals at rear edge of circuit board 6. Pull knobs off (volume tone/switch, tuning). 7. Remove two nuts which hold chassis mounting bracket to front baffle board. 8. Remove two screws at rear edge of circuit board. 156 收音机爱 好者资料库 RadioFans.CN