Philco-Radio-and-Television-Corp-G-681 电路原理图.pdf

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1、VOLUME R-19, MOST-OFTEN-NEEDED 1959 RADIO SERVICING INFORMATION PHILCO PORTABLE RADIO MODEL G-681. CODE 124 |R5 IU4 IU5 3V4 CONV. IF AMP IF-455KC DET. AVC 1ST. AUDIO OUTPUT _ rTOifc3|B4 *0- * tmano -mm i uirKniiMrNUU incmst wwo + im wtfsan *- LI L2 TERMINAL LUG IDENTIFICATION Black lead from R9, fil

2、ament dropping resistor. B, black lead from *A” battery and yellow lead from B” battery. A+, brown lead from A battery. Black lead to selenium rectifier, CR1. B+, red lead from CRl. Brown lead to filament dropping resistor, R9. White lead from AC interlock to RlO. Blue lead to Lll, ground. Blue lead

3、 from 3V4 plate to output trans , T2. Red lead to output transformer, T2. Blue lead to L8, ground. White lead from AC interlock to lug 5 of ON-OFF switch. Red lead from B battery to lug 7 of ON-OFF switch. CRl 8 R9 MOUNTED ON END BRACKETS T2 MOUNTED ON SPEAKER. LAI MOUNTED IN SCAN-TENNA HAMXX ON-OFF SWITCH CONTACT #7 IS A LUG ONLY; RED WIRE TO 90V BAT SHELL OF VOL. CONT CR5) CONNECTS 70 FRAME THRU WIRE FROM L8 70 Lit Composite PojioI View, Showing Porta Placement in 收音机爱 好者资料库 RadioFans.CN