Westinghouse-Electric-Corp-V-2137-1 电路原理图.pdf

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1、MANUAL OF 19S0 MOST I NO 47 PILOT LAMPS . DIAGRAMS AM ANT. TR|M.-lC57- FM ANT. TftIM.-ieSS- tA)*;. . Model H-199 T. - J nsrrn K17 W - Chassis V-2137-1 ., .eJlliUJ 4WC T7.I v! !/ .eaeae L tn 11 IQ.TMC Connect Signal Generator TSiaT*- Step Generator to _ Frequency Setting Adjust 1 Set the band switch

2、to FM. 2 Connect two 100,000 ohm reaiators (the resistances must be equal within 5 percent) be tween pin of the 6AL5 tube and ground aa shown on the schematic diagram* 3 Connect a V.T.V.M. between points ” 4 Stator of FM ant* section 10*7 me* maximum Sec* of ratio det* trana. for (C52) on tuning cap

3、acitor capacity zero (uae medium strength _through a *01 mfdmica signal) 5 _Connect the V T V.M. between point Z* and ground. 6 Same as atep 4 P 10.7 me. I maximum I Pri. of ratio det. trans. i Generator Frequency Setting Adjust nd Y (see schematic diagram). maximum Pri. of ratio det*trans* and capa

4、city pri. and sec. of 10.7 me. 1st and 2nd I-F trans. for max. VOTE: The pri. of the ratio det. trans. peaks in two p/aces. Use the peak with the stag farthest out. 7 Reconnect the V.T.V.M. between points X* and Y*1, and increase the signal strength 2 times. Same as step 4 10.7 me* maximum Recheck s

5、ec. of ratio det. capacity trans* for zero voltage Reconnect the V.T.V.M. between point Z* and ground. Same as step 4 10.7 me. maximum Pri. of ratio det. trans. for _j_capacity maximum voltage Remove the two 100,000 ohm reaistora that were inserted in step 2. FM ant. terminal through a 105 me. 105 m

6、e. PM oac. trimmer (C54) for .300 ohm non-inductive reaistor maximum output AN OSC LIS | SI I Lit BS Q97 llliDrl? MM -Wr $Ju 4; 60S CM T- M T- M MPO MPO I. SWITCH SWt IS SHOWN M CSTNCMS COUNTS* 6LOOKWIOC POSITION M PM SAM TWOS COIL OISOONNCOTCO. mS5LbmStim,%SSS&m f* 4 *LL WtTW NOASIMSO POOH CHASSIS (SNO.I USIHS A (0,000 OHM/VOLT MCTtR t TO6 0C IHSTALLCO PS*6 ALIMHCNTMU U,t V0L* l,T V.A.C. VOLTMSS SHOULD 0 AS MOWN tO PCR CCNT. 收音机爱 好者资料库 RadioFans.CN