Philco_H3410-Predicta-Princess-Sams-466-1电路原理图.pdf

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1、PHOTOFACT* Folder withClRCUITRACE* PHILCO CHASSIS 1OL41, U, 1OL42, U, 1OL43, U MODEL H3412L(Ch. 10L43) TRADE NAMEPhilcoMODELSCHASSIS MANUFACTURER TYPE SET TUBES POWER SUPPLY TUNING RANGE H4254S, SL, H4674, L, W, H4676S, SL, H4678, W, H4680, L, W, H4682S, SL, SW, H4690, P, H4692W, H4696S, SW 10L41 H4

2、676SLR, SR, H4680LR, R, WR, H4690PR, R, H4692WR, H4698PE, R 10L42 H3408C, H3410, L, V, H3412GL, L, H4432, L, H4730, W 10L43 UH4254S, SL, UH4674, L, W, UH4676S, SL, UH4678, W, UH4680, L, W, UH4682S, SL, SW, UH4690, P, UH4692W, UH4696S, SW 10L41U UH4690PR, R, UH4698PR, R 10L42U UH3408C, UH3410, L, V,

3、UH3412GL, L, UH4432, L, UH4730, W 10L43U Philco Corp., Tioga AC voltage measured at 1000 ohms ur per volt. 4. Line Voltag 2. Pin numbijunted in clock 3rd W. Sams 8, Co., Inc. 1959 PAGE 2 RadioFans.CN )IO OOTPUT ) 6BQ5 PICTURE TUBE elfl3)l7DRP4 CONNECT FOCUS ANODE RESULTS IN BEST FOCUS. N SOME VERSIO

4、NS, PLUG 10000 - mmf II 2 PREAMPLIFIER OSC T1605 PART O 5 TUNER 76-10524-3 - RIGHT SIDE PAGE 15 RadioFans.CN 5mmf f .25mmf MIXER PLATE COIL t USED ONLY IN TUNERS WITH INDIVIDUAL FINE ion TUNING - ,-AA/V- IF OUTPUT UHF TUNER B-I- SOURCE TO UHF DIAL LAMP O - I C - t/ _ t/j O t/ PAGE 17 RadioFans.CN RE

5、SISTANCE MEASUREMENTS ITEM VI V2 V3 V4 V5 V6 V7 V8 V9 V10 Vll V12 V13 V201 V202 TUBE 6DE6 6DE6 6AM8A 6AW8A 6EA8 6CS6 6BQ5 6DR7 6CG7 6DQ6A 6DA4 1G3GT 1B3GT 17DRP4 6BC8 6X8 ITEM TUBE Pin! 1. 5meg 180K 1200 On t24K 15K 100(3 t425n tlOK NC NC Pin 2 47 n 68n .2n 1. Imeg 5.50 2700 1000 2. Imeg 1.9meg .10

6、NC Pin 3 On .10 1 36000 t30K t25K On 2700 2. Imeg 10000 TP 1350K Pin 4 .in On .in On .10 .10 .10 .in .in tllK NC Pin5 1000n t!400n On .in On H80K On On Oo 700K tl.2o Pin 6 tlOOOo 1 14000 t3600o 68n t25K tlOK NC t3. 5meg t45K TP NC Pin? 00 200K .20 680K 470 n 30 t950n 68K 100K 00 .10 Pin 8 3300 n t30

7、00n 43000 NC 50K 10000 On 00 PINS 1 THRU 8 HAVE INFINITE RESISTANCE On tlSOOn On Pinl NC 270K 10K Pin 2 450K INF t68K Pin 3 On .in On Pin 4 NC 00 .10 Pin 5 t280K INF On Pin 6 200K 1. 4meg 220K Pin 7 .10 On f62K Pin 8 Pin 9 On t590fln 2. Imeg t680o 4500 On TOP CAP t 13n TOP CAP t360n 3n U7K Pin 9 1 T

8、HIS READING WILL VARY DEPENDING UPON THE CONDITION OF THE ELECTROLYTIC IN THE CIRCUIT. . THIS READING WILL VARY. CONTROL SET FOR NORMAL OPERATION. MEASURED FROM PIN 7 OF V2. t MEASURED FROM 275V SOURCE. NC NO CONNECTION. t MEASURED FROM PIN 3 OF Vll. TP TIE POINT. SW ON VOLUME LV TRANSFORMER CONTROL

9、 (Tl) PRIMARY WINDING CABLE CABLE POWER TUNING & CABLE CIRCUIT USED IN CHASSIS 10L42 .NTS9SCHEMATIC ALTERNATE POWER TUNING PAGE 18 RadioFans.CN HORIZ LINEARITY CENTERINGVERT LINEARITY RANGE SWITCH VERT HORIZ / HORIZ BRIGHTNESS HOLD HOLD WIDTH FREQHEIGHT CABINET-REAR VIEW HORIZONTAL SWEEP CIRCUIT ADJ

10、USTMENTS Turn the set on and tune in a station signal. Allow the receiver to warm up. Connect a clip lead across the Horizontal Stabilizing coil (L20). Set the Horizontal Frequency control (R7) until the picture appears to float back and forth across the screen. Remove the clip lead from across L20

11、and adjust the Horizontal Fre- quency slug (Bl) until the picture synchronizes horizontally. DISASSEMBLY INSTRUCTIONS CHASSIS REMOVAL MODEL H3412L 1. Remove 4 push-on type knobs from front of cabinet. 2. Remove 8 metal screws holding rear cover. Remove the rear cover. 3. Remove tuner connections, yo

12、ke plug, speaker leads, AC interlock from clock, picture tube socket connecting plug, video lead, and HV lead. (CAUTION: HV lead must be unplugged from 1G3 socket by opening 1G3 access door.) 4. Remove 2 metal screws holding rear control mounting bracket. 5. Remove 2 metal screws holding rear cabine

13、t brace. 6. Remove 2 nuts holding front control bracket. 7. Remove 2 metal screws holding rear cover interlock. 8. Remove 4 chassis bolts from bottom of cabinet. 9. Remove chassis. 10. Remove 3 metal screws on bottom of cabinet holding the tuner. Remove tuner. PICTURE TUBE HOUSING DISASSEMBLY 1. Rem

14、ove 2 metal screws holding trim at bottom of picture tube. 2. Remove spring holding trim strip around picture tube. 3. Remove 2 screws holding metal shell strap. Remove strap and front glass. 4. Remove 2 brass plugs, one on either side of shell. Re- move 2 metal screws now exposed. 5. Remove 2 screws at bottom of picture tube holding rear shell. Remove rear shell. 6. Remove yoke and picture tube socket. 7. Loosen picture tube mounting strap bolts. 8. Remove picture tube. PAGE 2O RadioFans.CN