Philco_H2010-Safari-Sams-475-2电路原理图.pdf
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1、PHOTO FACT8 Folder with ClRCUMRACE* PHILCO MODELS H2O1OBL, H2O1OL (Ch. 1OAT1O) DISASSEMBLY INSTRUCTIONS CHASSIS REMOVAL 1. Remove all external push-on type knobs except the Elap- sed-Time knob. 2. Remove 4 metal screws on bottom holding cabinet stand and lower section of cabinet to the chassis. 3. R
2、emove 2 metal screws at rear and one in front holding top plastic housing. Remove antenna connection from tuner. Remove metal screw holding ground strap. Re- move top plastic housing. 4. Remove 2 metal screws at rear and one at front of opti- cal system. Remove optical unit. 5. Remove5 metal screws
3、holding battery mounting bracket. Remove bracket. 6. Remove chassis. PICTURE TUBE REMOVAL 1. Remove chassis. 2. Remove picture tube socket, sleeve and magnet assembly, and HV lead. 3. Slide the picture tube out the top of chassis. MODEL H2010L (SAFARI) CHASSIS 10AT10 TRADE NAME Philco Models H2010BL
4、, H2010L (Safari) (Ch. 10AT10) MANUFACTURER Philco Corp., Tioga SOOOmmf (2200mnif) TERMINAL VIEW LI TERMINAL VIEW 12 COLLECTOR TRANSISTOR BASING COLLECTOR /BASE EMITTER EMITTER XI THRU X7 X8THRUX14 X16 AC voltage measured at 1000 ohms unless otherw nslt. umbers bottom of s are counted in clockwise d
5、irection o xket. 4. Lin 5. All s Voltage controls s se stated. maintained at et for normal ocke T17 pin to olts for operation; n comm voltoc, o sign n negative e readings. al applied, A PHOTOFACT STANDARD NOTATION SCHEMATIC Howard W. Sams & Co., Inc. I960 PAGE 2 RadioFans.CN SOUND TAKE-OFF AND VIDEO
6、 CONNECTIONS USED IN SOME VERSIONS - RadioFans.CN IGHSIDEOF RAST CONTROL AUDIO DRIVER 16 TERMINAL GUIDE AUDIO OUTPUT T7 TERMINAL GUIDE JSED IN SOME VERSIONS r .33 (543)|L2n,e, 1W El W| PHILCO MODELS H2O1OBL, H2O1OL (Ch. 1OAT1O) RadioFans.CN TRANSISTOR AND TUBE PLACEMENT CHART CHANNEL SELECTOR E TUNI
7、NG OSCILLATOR MIXER RFAMP T1597 _ T1600 _ T1561 SWEEP PRINTED BOARD CHASSIS AND VERT OUTPUT PRINTED BOARDVIDEO, SOUND, SYNC PRINTED BOARD o go 00 5 O So TRANSISTOR AND TUBE FAILURE CHECK CHART The following chart lists tubes and transistors whose failures are most likely to produce indicated symptom
8、s. Refer to Transistor & Tube Placement Chart for location of tubes and transistors. POWER SUPPLY FAILURE No raster, no sound Fuse(l.GA), Rect. (B-t-) SWEEP FAILURE No raster, has sound X16, X17, X18, Diode (Damper), VI, V2, V3 No vertical deflection X14, X15 Poor vert, linearity or foldover X14, X1
9、5 Poor horiz. linearity or foldover X16, X19, X18, Diode (Damper) Narrow picture Rect. (B+), X16, X17, X18, Diode (Damper) Vert, off freq. X14 Horiz. off freq. X16 LOSS OF PICTURE OR SOUND No pic, no sound, has raster XI, X2, X3, X4, Diode (Video Det), X5 No pic, no sound, has snow X201, X202, X203,
10、 XI No pic, has sound, has raster X6, V3 Has pic, no sound XI, X8, X9, MO, Xll SYNC FAILURE No vert, sync X13 No horiz. sync X13 No vert, or horiz. sync X13 m 70 K) SET 475 FOLDER 2 PAGE 3 RadioFans.CN CircuiTrace Numbers 1 thru 48 A Howard W. Sams PAGE 4 CIRCUITRACE*Photo VIDEO, SOUND, SYNC PRINTED
11、 BOARD RadioFans.CN CircuiTrace Numbers 92 thru 139 T31 138 134 129 136 127 A Howard W. SamiCIRCUITRACEPhoto SWEEP PRINTED BOARD o ll o o m O X 58 5S O r 0 m 70 to SET 475 FOLDER 2 PAGE 5 RadioFans.CN ALIGNMENT INSTRUCTIONS PRE-ALIGNMENT INSTRUCTIONS The High Voltage lead should be securely taped an
12、d kept away from the chassis. Set Range switch to Normal and Drive Level control (R7) to mid-position. Suggested Alignment Tools: AlthruA9 GENERAL CEMENT * 6009, 8195, 8274, 8275, 8728, 8987 WALSCO #2531 A10, A12, A13 GENERAL CEMENT #8282, 8606, 8606L, 9295 WALSCO #2526, 2543, 2544, 2545 VIDEO IF AL
13、IGNMENT Connect the synchronized sweep voltage from the sweep generator to the horizontal input of the oscilloscope for horizontal deflection. The generator output lead should be terminated with its characteristic impedance, usually 50 ohms. Use only enough sweep generator output to provide a usable
14、 pattern on scope. Connect a variable bias supply between TP-3 and chassis. The required bias will range from -1.5 to +3 volts. During alignment set bias to -K 2 volts unless otherwise stated. Adjust Al and A2 so that top of inner core is flush with top of outer core. SWEEP GENERATOR COUPLING Unplug
15、 IF cable from tuner and connect gener- ator across cable plug. Across antenna input jack. Reconnect IF cable. 11 SWEEP GENERATOR FREQUENCY Not used 69MC (10MC Swp) MARKER GENERATOR FREQUENCY 39. 75MC (4001, 30% AM Mod) 41. 25MC 47. 2 SMC 45.3MC 45. OMC 44. OMC 65. 75MC 44. 7MC 42. SMC 45. 75MC CHAN
16、NEL 4 CONNECT SCOPE Vert. Amp. to TP-4. Low side to chassis. ADJUST A3 A4, Ag A6 A7 AS A9 Fine Tuning Mixer Collectoi Coil REMARKS Adjust for MINIMUM scope indication. Raise bias at TP-3 in positive direction if necessary to obtain usable scope de- flection being careful not to overload. Adjust for
17、maximum scope indication. Adjust for MINIMUM scope indication. DO NOT disturb for balance of alignment. Adjust for maximum scope Indication. Use peak nearest top of coil. Check for response curve similar to Fig. 1. If necessary, retouch Mixer Collector coil to correct high frequency side of curve, A
18、5 for low frequency side and A7 for correct tilt. SOUND IF ALIGNMENT Connect the negative lead of a 3 volt bias supply to TP-3. Positive to chassis. SIGNAL GENERATOR COUPLING High side thru 10K to TP-4. Low side to chassis. 11 SIGNAL GENERATOR FREQUENCY 4. SMC (400% 30% AM Mod) CHANNEL Any non- inte
19、rfering CONNECT VTVM DC probe to point . Common to chassis. ADJUST A10, All A12, A13 REMARKS Adjust for maximum deflection. (All not used in some sets). Preset for maximum core separation. Adjust for maximum deflection using first peak turning in. Adjust A13 for maximum deflection using first peak t
20、urning in. Disconnect test equipment and tune in a weak air signal. Retouch A12 for MINIMUM noise or distortion. 10. 11. F IG.I PAGE 6 RadioFans.CN TUNER ALIGNMENT INSTRUCTIONS 76-11773(1110) PRE-ALIGNMENT INSTRUCTIONS The High Voltage lead should be securely taped and kept away from the chassis. Su
21、ggested Alignment tools: A201, A208, A210, A212, A219 thru A222 GENERAL CEMENT #5009, 8195, 8274, 8275, 8728, 8987 WALSCO #2531 A217, A218 GENERAL CEMENT #5004, 5008, 5009 WALSCO #2520 OSCILLATOR ALIGNMENT Set the Fine Tuning to the center of its range. The generator output lead should be terminated
22、 with its characteristic impedance, usually 50 ohms. Use only enough sweep generator output to provide a usable pattern on scope. Coils not containing slugs are adjusted by bending toward or away from switch wafer. DUMMY ANTENNA Direct SIGNAL GENERATOR COUPLING Across antenna terminals. ii SIGNAL GE
23、NERATOR FREQUENCY 209. 75MC (400 30% AM Mod) 203.75MC 197. 75MC 191. 75MC 185.75MC 179. 75MC 173.75MC 81. 75MC 75. 75MC 65.75MC 59. 75MC 53.75MC CHANNEL 13 12 11 10 9 8 7 6 5 4 3 2 CONNECT SCOPE Across Video Det.load . ADJUST A201 A202 A203 A204 A205 A206 A207 A208 A209 A210 A211 A212 REMARKS Adjust
24、 for MINIMUM scope indication. M M .- II M , Video Sound T$tefe OR DIPA T 30*/ 76* 1 F IG.20I Video jIL* IMCMAxV OR DIP/70* -_-. , an* / I T iSound 3M7 50 -.70*1 F IG.202o RF AND MIXER ALIGNMENT 13 14. 15. 16. 17 18. 19. Connect the synchronized sweep voltage from the sweep generator to the horizont
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