Philco_G4242-Predicta-Holiday-Sams-439-1电路原理图.pdf

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1、PHOTO FACT* Folder 10 r t M in t o s o withClRCUIIRACE* PHILCO MODELS G4242L, M, G4654L, M, W, UG4242L, M, UG4654L, M, W (Ch. 9L37, U) MODEL UG4242L(Ch. 9L37U) www CAUTION ONE SIDE OF AC LINE CONNECTED TO CHASSIS. Care should be exercised when connecting test equipment or physically contacting chass

2、is. Isolation devices .employed by manufacturer should be checked and properly connected before returning receiver to owner. TRADE NAME MANUFACTURER TYPE SET TUBES POWER SUPPLY TUNING RANGE PhilcoMODELSCHASSIS G4242L, M, G4654L, M, W 9L37 UG4242L, M, UG4654L, M, W 9L37U Philco Corp., Tioga S5 Ojy -=

3、|m m, CircuiTrace Numbers 1 thru 10 VIDEO IF - PRINTED BOARD A Howard W. SamiCIRCUITRACE*Photo ARROWS INDICATING TUBE LOCATIONS ARE POINTING TO PIN 1 UNLESS OTHERWISE INDICATED RadioFans.CN MIXER PLATE COIL HIGH CHANNEL BANDWIDTH ADJUST GIMMICK WIRE _ - . TO UHF TUNER IlOOOmml 2VAC FILAMENTS CHANNEL

4、 SELECTOR SWITCH SHOWN IN CHANNEL 13 POSITION A PHOTOFACT STANDARD NOTATION SCHEMATIC OHcw.rdW.S.n.tC,lnc.,959 76-11547-8 (T-69K) L aaaiod (n ZC16 *M3) M 7W M W ylfrS9fr9 W N S11QOW ODIIHd RadioFans.CN TUNER PARTS LIST AND DESCRIPTIONS 76-11547-8, 76-10391-1 TUBES (GENERAL ELECTRIC, SYLVANIA) ITEM N

5、o. V201 V202 USE TYPE NOTES RF Amp. 4BC8 Mixer -Osc. 5X8 J USE TYPE NOTES V203 UHF Osc. 2AF4A FIXED CAPACITORS Capacity values given in the rating column are in mfd. for Paper ITEM No. C201 C202 C203 C204 C205 C206 C207 C208 C209 C210 C211 C212 C213 C214 C215 C216 C217 C218 C219 C220 C221 C222 C223

6、C224 C225 C226 C227 C228 0229 C230 C231 C232 C233 C234 C235 RATING CAP. 5 5 39 5 5 1000 2.2 150 3.9 5 65 330 .5-3 7.5 150 1.0 27 27 3.9 1000 2.2 1000 680 1000 150 1000 330 1000 .68 30 15 .5-3 250 1000 1000 VOLT REPLACEMENT DATA PHILCO PART No. 30-1224-78 30-1224-78 62-03 9409011 30-1224-78 30-1224-7

7、8 30-1268-7 30-1221-6 30-1268-6 30-1221-14 30-1268-5 30-1268-2 30-1265-2 31-6520-25 30-1251-19 30-1268-6 30-1224-82 30-1268-4 30-1224-146 30-1221-14 30-1268-7 30-1224-143 30-1238-13 30-1238-22 30-1268-7 30-1265-3 30-1268-7 30-1265-2 30-1268-7 30-1221-11 76-10170 30-1224-133 31-6520-1 30-1261 30-1258

8、 30-1258 AEROVOX PART No. SIS SI 5 DI-000039 SIS SI 5 EF-001 NPO-SI 2. 2 BPD-00033 SI 27 EF-001 NPO-SI 2. 2 BPD-001 BPD-00068 EF-001 BPD-00015 EF-001 BPD-00033 EF-001 EF-001 EF-001 CENTRALAB PART No. DD-390 MFT-1000 TCZ-2R2 DD-331 829-3 D6-270 MFT-1000 TCZ-2R2 DD-102 DD-681 MFT-1000 DD-151 MFT-1000

9、DD-331 MFT-1000 TCZ-R68 829-3 MFT-1000 MFT-1000 CORNELL- DUBILIER PART No. LT6V5 LT6V5 L10Q39 LT6V5 LT6V5 CTA6V22C L10T33 LT6Q27 CTA6V22C BYA6D1 BYA10T68 L10T15 L10T33 MALLORY PART No. ZT-555 ZT-555 UC-5439 ZT-555 ZT-555 UC-5333 CT565A UC-5427 D0521 UC-5368 UC-5315 UC-5333 CT565A SPRAGUE PART No. 5G

10、A-V5 5GA-V5 5GA-Q39 5GA-V5 5GA-V5 503C-D1 5TCCB-V22 5GA-T33 5GA-Q27 503C-D1 5TCCB-V22 5HK-D1 5GA-T68 503C-D1 5GA-T15 503C-D1 5GA-T33 503C-D1 503C-D1 503C-D1 NOTES NPO 10% N1500 . 25mmf ITEM No. R201 R202 R203 R204 R205 R206 R207 R208 RATING OHMS 1500S2 10K 470K 5% 470K 5% 1800SJ 100 K 47K 15 K WAH 1

11、 2 PHILCO PART No. 66-2158340 66-3108340 66-4478240 66-4478240 66-2184340 66-4108340 66-3475340 66-3158340 NOTES RESISTORS All waltages 1/2 watt, or less, unless otherwise listed. ITEM No. R209 R210 H211 H212 R213 R214 R215 RATING OHMS 10K 82K 220n 150K 470K 5600S! 1500J2 WAn 1 PHILCO PART No. 66-31

12、08340 66-3824340 66-1228340 66-4158340 66-4478340 66-2568340 66-2158340 NOTES COILS (RF-IF) ITEM No. L201 L202 L203 L204 L205 L206 L207 L208 L209 L210 USE RF Choke RF Choke IF Trap VHF Ant. Trans. VHF Ant. Trans. HF Choke Ant. Colls Cathode Choke RF Colls Mixer Grid Colls PHILCO PART No. 32-4645-37

13、32-4645-37 32-4719-2 32-4725 32-4725 32-4726-10 76-10112 32-4652-51 328-0116 76-10UO NOTES Channel 2-13, Includes wafer assy. Channel 2-13, Includes wafer assy. Channel 2-13, Includes wafer assy. ITEM No. L2U L212A B L213 L214 L215 L216 L217 USE Osc. Colls Mixer Plate Coi RF Choke UHF Ant. Input Ass

14、y. Cathode Choke Fll. Choke Fil. Choke RF Choke PHILCO PART No. 328-0113 32-4629-9 76-10072 32-4642-4 32-4642-3 32-4652-44 76-10170 NOTES Channel 2-13, Includes wafer assy. Includes C229, R213 Includes crystal panel assy. COMPONENT COMBINATIONS ITEM No. K201 K202 USE Antenna Isolation Network Antenn

15、a Isolation Network DESCRIPTION 470mml, .2-lmeg 470mmf, . 2-lmeg PHILCO PART No. 30-6028-1 30-6028-1 REPLACEMENT DATA Centralab HC-471 Sprague AC1-1 Centralab RC-471 Sprague AC1-1 CRYSTAL DIODES ITEM No. M201 ORIG. TYPE 1N82A REPLACEMENT DATA PHILCO PART No. 34-8027 CBS PART No. 1N82A SYLVANIA PART

16、No. 1N82A NOTES UHF Mixer (Clip-in) PAGE 6 RadioFans.CN RFAMP 4BC8 MIXER PLATE COIL X , - i Q TO FILAMENT STRING A PHOTOFACT STANDARD NOTATION SCHEMATIC Howard W. Sams r CO m c Zi I? =3 ro 5- ZJ J -n -u ZJ o 33 Tl OO -n =3 i*J | s j a i 3 S a D Xa. il -# S 1 o o s 1 yj SO VjJ V*J UJ C5 O 1 1 -a 5i I

17、 70 c: oo I 1 _ PD OO .jj z. o m gc o n -= ro I O - 1 z. o ? -J s a 11 ro 1 S ro O 3 D S 3 -j 0 3 p o CD i ro O i o o TS: 0 i fe X*, i 0 g OJ CO i UJ 0 IO 1 rsj 4 NO O S 7s c S o 0 OJ CO SJ1 3 00 O VJ1 O S it o 0 o o CO o VJ-1 3 CD -ti O 0 & It tii o 0 o I m 1 c: CO m 2 11 ZJ ro a 5 UJ I?. Xi -o -a

18、Zl o Z) -D OO NO 70 m i/2 CO n en C 70 CHASSIS-BOTTOM VIEW RadioFans.CN HORIZ LINEARITY LOCAL DISTANCE SW WIDTH VERT CENTERING HORIZ CENTERING CABINET-REAR VIEW HORIZONTAL SWEEP CIRCUIT ADJUSTMENTS Suggested Alignment Tools: GENERAL CEMENT #8606, 8606L, 8282, 9295 WALSCO #2526, 2543, 2544, 2545 Turn

19、 the set on and tune in a station signal. Allow the receiver to warm up. Connect a clip lead across the Horizontal Frequency coil (L22). Set the Horizontal Hold to the center of its range. Adjust the Horizontal Range (R4B) until the picture appears tofloat back and forth across the screen. Remove th

20、e clip lead from across L22 and adjust the Horizontal Fre- quency slug (Bl) until the picture synchronizes horizontally. Adjust the Width control (R5) for a picture slightly wider than neces- sary to fill the picture mask horizontally. DISASSEMBLY INSTRUCTIONS CHASSIS REMOVAL 1. Remove 4 front and 4

21、 side push-on type knobs. 2. Remove 8 wood screws holding rear cover. Remove the rear cover. 3. Extend antenna rod outward. 4. Remove 2 metal screws holding chassis at the rear. 5. Partially remove chassis. Remove yoke and picture tube plugs and cathode lead, speaker, and HV leads. 6. Remove chassis

22、. PICTURE TUBE HOUSING DISASSEMBLY 1. Yoke is accessible by removing 4 metal screws holding rear cover to housing. 2. Remove 2 small metal screws holding bottom metal trim strip. 3. Remove spring holding wrap around plastic trim strip at the bottom. Remove plastic trim strip. 4. Remove 2 metal screw

23、s holding plastic shell strap at the bottom. Remove strap. 5. Remove front mask. 6. Remove snap-in metal trim caps on side support arms. 7. Remove 2 metal screws holding support arms to rear shell. Remove support arms by turning to line up bot- tom slots. 8. Remove 2 small metal screws holding rear shell to bot- tom support bracket. 9. Remove rear shell. PAGE 2O RadioFans.CN