Philco-Radio-and-Television-Corp-L-1653 电路原理图.pdf

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1、VOLUME R-24, MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION PHILCO MODELS L-1651, L-1652, & L-1653 (Service material continued on pages 125 through 128) FM TUNER SUB-ASSY. REMOVAL - MODELS L-1651, L-1652 & L-1653 1. Remove 8 screws holding front faceplate to chassis. 2* Remove faceplate and larg

2、e pulley connected to AM tuning gang. DO NOT REMOVE dial cord. 3. Remove connecting cord from FM and AM tuning gang pulleys only. 4. Unsolder 6 wires that connect tuner to chassis. 5. Remove 4 sheet metal screws holding front and back of tuner in chassis. 6. Remove tuner by forcing from chassis. VR1

3、 AFC SW FUNCTION SW LOUDNESS CONTROL Top View Component Location Model L-1651 124 收音机爱 好者资料库 RadioFans.CN VOLUME R-24. MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION FM TUNER SUB ASSY FN SWEEP I *#n500IC! WS) FUNCTION SWITCH TONE-BALANCE V5 12BA6 AM DET PHILCO MODEL L-1651 AMPLIFIER AND TUNER AM

4、PLIFIER AND TUNER PANEL REMOVAL - L-1651, L-1652 & L-1653 1. Unsolder ell wires holding perma-circuit panel in chassis. 2. Remove 6 sheet metal screws that secure perma- circuit panel to front panel and FM tuner. 3. Remove 2 nuts from function switch and loudness control. 4. Pull panel and associate

5、d chassis from front panel 5. Remove 5 sheet metal screws holding perma-cir cuit panel to chassis. Ja 6. Lift panel away from chassis. may (Continued from page 124, Diagram is on page 125) DO 10T USE FM/AFC POSITION FOP ALICNNENT USE DOLT FN POSITION STEP 5 ON) AN CEN ilCANC SET TO 1500 ACl /R ADi T

6、O MAX OUT ) A isookc JX/ -ij-i STEP HIM) 1. fZmrs stem m IS IStllMI gg |l11 3! U flOOPTO krn FULL! CLOSED I “.S, J TO f0 Igf* ADi TO MAX OUT , / 5C r - (FNI “TO PIN I OF VS STEP I Alignment Procedure Chart, Model L-1651 V) I2AX7A STEREO PRE-AMP VR1 V2 12AV6 VOLUME INVERTER V7 V4 25F5 AUD PWR AMP V6

7、12BA6 AM-FM IF V3 / I2BE6 AM CONV Bottom Perma-Circuit View, Parts Location, Model L-1651 125 收音机爱 好者资料库 RadioFans.CN 126 收音机爱 好者资料库 RadioFans.CN VOLUME R-24. MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION Silllii!ll|-3g PHILCO MODELS L-1652 & L-1653 AMPLIFIER AND TUNER (Continued) 3 TURNS 19KC DOUBLER V7 I2BA6 FM IF VB-V5 25F5 AUDIO PWR AMP AM CONV bE BByi BrSig fi P-O IKICgl Bottom Perma-Circuit View Parts Location, Models L 1652 & L-1653 127 128 I