Hoffman-CT-800-Sams-63-11电路原理图.pdf

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1、PHOTOFACT* Folder HOFFMAN MODELS CT-8OO CT-8O1, CT-9OO, CT-9O1 TONE CONTROL VOLUME CONTRAST ON-OFF SW. BRIGHTNESS VERT. HOLD CONTROL CHANNEL SELECTOR FINE TUNING CONTROL MODEL CT-800 TRADE NAME Hoffman Models, CT-800, CT-801, CT-900, CT-901 MANUFAaURER Hoffman Radio Corp., 3761 So. Hill St., Los Ang

2、eles, California TYPE SET Television Receiver TUBES Thirty POWER SUPPLY 105-125 Volts, 60 Cycles TUNING RANGEChannels 2 through 13 ACRATING 2.6 Amps. 117 Volts Alignment Instructions Block Diagram Disassembly Instructions Horizontal Oscillator Adjustment Linearity Adjustments Parts List and Descript

3、ion Photographs Cabinet-Rear View Capacitor Identification Chassis-Top View Resistor Identification INDEX Page 8,9,10 Photographs(continued) 24 RCA Tuner 23 Standard Coll Tuner Tarzlan Tuner33 23 18,19,20 24 15,22 3,17 16,21 Trans., Inductor and Alignment Identification Schematic Schematic-RCA Tuner

4、 Schematlc-Tarzlan Tuner Tube Placement Chart Voltage and Resistance Measurements Page 7 14 5 13 2 12 4 6 11 cc O I nO oo 9s |g O i O O HOWARD W. SAMS et sufflcent reading on VTVM with the signal being fed to This point is accessible in the different ture rs as .he mixer tube. R4C non point A3 A4 AS

5、 MMENT REMARKS Set contrast control to give a -3 volt reading. Leave at this setting during en- tire IF Alignment procedure. Adjust for minimum deflection. Adjust for minimum deflection. Those models having 3 fixed trimmers across this trap winding should be adjusted for minimum at 21.25MC. Adjust f

6、or maximum deflection Adjust for maximum deflection. If A? re- quired adjustment in Step 8 repeat Step 2. If FM signal generator is not avaiable continue with Step 12. RF AMP , MIXER ALIGNMENT CSTAND, nerator to the horizontal amplifier inthe scope for hthe type tuner used. Determine which tuner Is

7、being Remove the oscillator mixer coil strip for any enamel ct the high side of the generator to point J and the low sclllator tubes a nd use the dummy mixer tube as show p., and mixer tubes ana use dummj mixer tube as shown in- er of amplifying stages In the vertical amplifier Inthe CONNECT SCOPE t

8、. Amp. to Intoa Ground chassls. A5,A6, A7,A8 A9 REMARKS Hake slight adjustments necessary to obtain response curve per Fig.4 If considerable adjustment is re- quired the traps must be realigned. iocket during step 12. Fashion hook on 1 Megohm resls tor aid. olnt 1th to oint : has- All A12.A13 A14.A1

9、5 CONNECT SCOPE tical amp. to ntcp Oround chassis. t. Amp. to ntflA in iesS/lth 33K2. und to chassis Detune All. Adjust AID for maximum *flect- ion. Adjust for zero reading. A positive or negative reading is obtained on either side of correct setting. Adjust for maximum deflection. G FM SIGNAL GENER

10、ATOR AND OSCILLOSCOPE ADJUST Aid, All A12,Ai; A14,Alf REMARKS Adjust for maximum aplltude of peaks and stralghtness of diagonal line with marker at center of line as per Fig. 1. Adjust for maximum amplitude and symmetry per Fig. 2. Adjust for maximum amplitude and symmetry per Fig. 3. Continue with

11、Step 16. 16 17 FIG. I FIG.2 18 19 FIG. 3 Set contrast control to -1.5 volts. Measure from arm of c DUMMY ANTENNA Direct Direct SWEEP GENERATOR COUPLING Across antenna terminals. ti * Picture carrier t Sound carrier SWEEP GENERATOR FREQUENCY 207MC (10MC Sweep) 213MC (10MC Sweep ) 201MC (10MC Sweep) 1

12、95MC (10MC Sweep) 189MC (10MC Sweejp) 183MC (10MC Sweep) 177MC (10MC Sweep) 85MC ( 10MC Sweep) 79MC ( 10MC Sweep) 69MC (10MC Sweep) 63MC (10M3 Sweep) 57MC (10MC Qujtici 1 MARKER GENERATOR FREQUENCY 205.25MC 209.75MC 211.25MC 215.75MC 199.25MC 203.75MC 193.25MC 197.75M3 187.25MC 191.75MC 181.25M3 185

13、.75MC 175.25MC 179.75MC 83.25MC* 87.75MCT 77.25M3* 81.75MCI 67.25MC* 71.75MCT 61.25FC* 65.75MCT 55.25MC* 59.75MCt CHANNEL 12 13 11 10 9 8 7 6 5 4 3 z Ve tt te si _ OSCILLATOR ALIGNMENT CST. Complete alignment of the oscillator circuit may not be n zero reading is obtained for each channel when t he

14、fine tunl (Connect signal generator and VTVM as In steps 18 CONNECT SCOPE Vertical amp. through 1QKQ to point Low side to chassis. ADJUST A16, A17, A18 REMARKS Adjust for flat top pattern with markers appearing as per Fig. 5. Check marker for all channels. If maximum reception is desired for one spe

15、cific channel, adjust A16, A17 if 191.75M3T 181.25M3* 185.75MCT 175.25M3* 179.75MCT 83.25MC* 87.75MCT 77.25M3* 8 ,75MCt 67.25MC* 71.75MCT 61.25MC* 65.75MCT 55.25MC* 59.75MCT CHANNEL 13 12 11 10 9 8 7 6 5 4 3 2 CONNECT SCOPE Vertical amp. through lOKffi to point Low side to chassis. ADJUST A609, AGIO

16、 A611 A612 A613 A614 A615 A616 A617,618 A619 A620 A621 A622 REMARKS Adjust for zero reading between positive and negative peaks. n wave traps ABas Not Hi 43-20 43-20 58-151 M-19-i Not Ri M-83-! M-44-! Not R M-40-i Not Ri RESI ITEM No. Rll R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R

17、27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R39 RATING RESISTANCE 3900Si 47KS2 10KS2 22002 10K2 47002 47002 220K2 39002 39002 5K2 680K2 10K2 10K2 10002 392 150s; 150S! 150SJ 150S! 10002 10002 10KS! 392 10002 47002 392 27002 10002 WATTS i 1 X 2 T I 5 1 I i 2 e 2 J i i 2 REPLACEMENT DATA HOFFMAN PA

18、RT No. T4704 T4543 T4559 T4527 T4512 T4503 T4507 T4507 T4507 T4507 T4512 T4512 T4527 T4503 T4512 T4520 T4503 T4555 T4512 IRC PART No. BTS-3900 BTS-47K BTS-10K 3TS-2200 BTS-10K BTS-470C HTS-4700 BTS-220K BTS-3900 BTS-3900 AB-5000 BTS-6S30K BTS-10K BTS-lOK-5% BTS-1000 BW-i-150 BW-J-150 BW-J-150 BW-J-1

19、50 BTS-1000 BTS-1000 BTS-10K-5% BTS-1000 BTS-4700-5% BTS-2700-5% BTS-1000 PAGE 18 RadioFans.CN PARTS LIST AND DESCRIPTIONS r Electrolytic : Capacitors. RAGUE RTNo. /L-30 /L-25 /L-16 JL-53 /L-18 /L-66 M-215 M-215 M-815 M-215 M-32S 11-215 H-21S M-215 M-215 M-32b M-21Q M-215 11-215 M-215 1-325 1-215 *!

20、-21S -2 1-325 M-215 -41 -15 -15 M-35 -15 -15 -2 M-215 M-215 -11 M-215 M-215 M-215 M-45 M-27 11-325 -22 -11 -11 -11 IDENTIFICATION CODES AND INSTALLATION NOTES Filter Filter liter Filter Decoupling Bias Filter Filter Filter Filter Low Pass Filter Decoupling Filter Vert. Output Cath.Byi Hor. Cent. Byp

21、ass Vert. Cent. Bypass Fixed Trimmer RF Fil. Bypass RF Decoupling RF Coupling Osc. Grid Cap. Osc. Feedback RF Bypass Conv. Fll. Bypass Bias Filter 1st V. IF Fil. Bypass 1st V. IF Decoupling Decoupling IF Coupling Bias Filter 2nd V. IF Fll. Bypass 2nd V. IF Decoupling Decoupling IF Coupling Bias Filt

22、er 3rd V. IF Fil. Bypass 3rd V. IF Decoupling Decoupling IF Coupling 4th V. IF Cath. Byp. 5 4th V. IF Fil. Byp. 4th V. IF Decoupling RF Bypass IF CouDling V. Det. Fil. Bypass Diode Filter Video Coupling Video Output Cath. Byp. Video Coupling n n Brightness Cont. Byp. 1st S. IF Cath. Byp. 1st S. IF D

23、ecoupling 2nd S. IF Grid Filter 2nd S. IF cath. Bypass 2nd S. IF Screen Bypas; 2nd S. IF Plate Dec. 3rd S. IF Grid Filter 3rd S. IF Decoupling RF Bypass De-emphasis Audio Coupling Tone Comp . ITEM No. 056 C57 C58 059 C60 061 C62 C63 064 C65 C66 067 C68 069 070 C71 072 073 C74 075 C76 077 C78 079 C80

24、 C81 C82 083 C84 C85 C86 C87 C88 C89 C90 C91 C92 C93 C94 C95 C96 097 RATING CAP. 100 .02 .2 .01 .05 270 270 .1 .05 .01 .002 .005 .005 4700 .05 .1 82 .015 .004 .05 .05 .004 ,015 1200 .004 390 .01 .05 680 .001 .1 .05 .05 .035 500 15 15 43 75 .01 .01 1500 VOLT 500 40 20 6CX 40 10 50 60 3 3 3 3 30 3 3 6

25、00 400 403 400 40 50 3 3 600 40 50 40 3 3 3 1000 403 600 100C 400 40 50 40 60 3 3 3 3 500 100C 403 400 100C 100C 10000 60C 60C REPLACEMENT HOFFMAN PjiPT Kin T4013 T41 T41 T41 T40 T40 T41 30 36 LI L4 34 19 T4118 T4114 T4131 T4116 T41 T40 L6 38 T4118 T41 T40 T41 L5 32 38 T4103 T4111 T4118 T4103 T4108

26、T40 T41 T40 T41 T41 LI 34 35 36 18 T4006 T4100 T41i2 T4111 T4117 T4105 T4200 T41C T41C 7 7 T4007 * Some models t Notusedn AEROVOX ffrtn Kin 1468-0001 P48 484 P68 P48 146 P63 P68 3-02 -.2 8-01 8-05 3-OOC 3-1 3-05 25 P488-01 P683-OOE P688-005 P68 P68 P48 P48 3-OOE 3-05 3-1 3-01E P1088-004 P483-05 P688

27、-05 P1088-004 P4S8-015 P68 146 P48 P68 3-004 J-OOC 3-01 3-05 4 1479-0007 P1088-001 P483-1 P488-05 P1088-05 1469-00004 1469- P68S peat OOOC -01 J-01 75 1467-0015 use .OlMFD in all modeIs. CORNELL- DUBILIER PARr No. 5W5T1 GT GT GT GT 5W GT 482 4P2 3S1 4S5 5T25 3P1 GT6S5 GT4S1 GT3D2 GT6D5 GT3D5 GT6S5 G

28、T GT tPl 3S15 GT16D4 GT4S5 GT6S5 GT16D4 QT6S15 GT 5R GT GT 3D4 5T4 1S1 3S5 2R5T7 GT16D1 GT1P1 GT4S5 GT16S5 5R5Q4 5R5Q7 GTS1 SI 1W5D15 DATA ERIE PART No. GP1K-100 GP2K- GP2-3 GP2M- BSO 35-01 302 GP2M-005 G C P2M- P2-3 30S 35-01 NPOM-75 GP2L-0015 SOLAR PART No. MO. 5-31 ST-4-02 ST-4-.2 ST-6-01 ST-4-05

29、 MO. 5-325 ST-6-1 ST-6-05 ST-4-01 ST-6-002 ST-6-005 ST-6-005 ST-6-05 ST-4-1 STM-16- 004 ST-4-05 ST-6-05 STM-16- 004 ST-6-004 MOS.5-34 ST-4-01 ST-6-05 MWS.5-37 STM-16- 001 ST-4-1 ST-4-05 STM-10- 05 MOS.5-44 MOS.5-47 ST-6-01 ST-6-01 MW. 5-215 SPRAGUE PART No. 1FM-31 TM-12 68P18 TM-11 TM-15 1FM-325 TM-

30、1 TM-15 TM-11 TM-22 TM-25 TM-25 TM-15 TM-1 MB-24 TM-15 TM-15 MB-24 TM-24 MS-34 TM-11 TM-15 MS -37 TR-21 TM-1 TM-15 TR-15 MS-44 MS-47 TM-11 TM-11 1FM-215 IDENTIFICATION CODES AND INSTALLATION NOTES AF Plate Bypass Audio Coupling Audio Feedback* Output Plate Bypass T Sync. Coupling ITEM No. R40 R41 R4

31、2 R43 R/M 1st Sync. Amp. Plate Byp J,J5 Sync, Coupling 1st Sync. Amp. Plate E Sync. Coupling Vert. Sync. Coupling Integrator Net. it ti ii ii Vert. Osc. Grid Cap. Vert. Discharge Vert. Coupling Hor. Sync. Coupling Fixed Trimmer Sync. Coupling AFC Filter Hor. Osc. Cont. Screen Byp. AFC Coupling Phase

32、 Shifter n n Hor. Osc. Grid Cap. Differentiator Net. Hor. Osc. Coupling Hor. Osc. Screen Bypass Hor. Discharge 5% Hor. Sweep Coupling Hor. Output cath. Byp. Hor. Output Screen Byp Damper Filter Damper Filter t 3% HV Filter Tn. Oxide Fixed Trimmer T i T n if n n Line Filter RF Bypass this application

33、. CONTROLS ITEM No. R1A B R3A B R3A B R4 R5 R6 R7A B R8 R9A B RIO I RATING RESIST- ANCE 500K2 Shaft 10K2 1 Meg. 1 Meg. 50K2 202 202 15002 5000ft Shaft 2.5 Meg 50K2 Shaft 1 20K2 3 Shaft WATTS 4 4 4 i i 2 4 . 4 4 4 REPLACEMENT DATA HOFFMAN PART No. V Nc 809 t Req. T4801 T4304 T T TV 1308 1805 1802 T48

34、07 Nc T T Nc V t Req. 1806 ,800 t Req. 1,803 Not Req. lor PART No. D13- A W-2C W203 W-1E 137 ) CIO )00 Dll-114 A Dll- A Dll- A 123 120 CLAROSTAT PART K|0. M-60-2 Not Re 43-20 43-20 58-15C q. CT,i )0 M-19-S Not Re M-83-E M-44-E Not Re M-40-E q- q- Not Req. INSTALLATION NOTES Tone control Attach to R1

35、A Per Instructions Contrast control n , t Volume control - T45 T45c T45C T45 T45 T45( T45I T45 T45E T45 T45t T45( T45( T45i T45. T45( T45 T45 T47C T45i T45! T45f T45: T451 T45( T45 T45 T45! T45t T45 T45i T45 T45t T45 T45 T45; T45f T45 T45 T45f T45f T45( T45C T453 T45C T45E T45 T45 T45C- T45f T47C T4

36、5 T45 T454 T45 T45 T45C T45C T45C T454 T452 T47C T47C T47C T456 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R3S R37 R38 R39 392 1502 1502 1502 1502 10002 10002 10K2 392 10002 47002 39ft 2700ft 1000ft T4503 T4507 T4507 T4507 T4507 T4512 T4512 T4527 T4503 T4512 T4520 T4503 T4555 BW-4-150 3W-J-1SO BW-4-150

37、 BW-J-150 BTS-1000 BTS-1000 BTS-lOK-5% BTS-1000 BTS-4700-5% BTS-2700-595 BTS-1000 1st Video IF Cathode Decoupling Bias Network 2nd Video IF Grid 2nd Video IF Cathode 2nd Video IF Decoupling 3rd Video IF Grid 3rd Video IF Cathode 3rd Video IF Plate 3rd Video IF Decoupling See Note 2ZVk 20% 205S Used

38、In models Used in models Not used In all Rll thru R21 ar the RCA tuner o- ITEM No. LI RATINGS TOTAL DIRECT CURRENT .310A RESISTANCE 37.52 IN 10 1 RadioFans.CN DESCRIPTIONS No. 00 50 5-01 02 05 05 5-01 5 J15 SOLAR PART No. MO. 5-31 ST-4-02 ST-4-.2 ST-6-01 ST-4-05 MO. 5-325 ST-6-1 ST-6-05 ST-4-01 ST-6

39、-002 ST-6-005 ST-6-005 ST-6-05 ST-4-1 STM-16- 004 ST-4-05 ST-6-05 STM-16- 004 ST-6-004 MOS.5-34 ST-4-01 ST-6-05 MWS.5-37 STM-16- 001 ST-4-1 ST-4-05 STM-10- 05 MOS.5-44 MOS .5-47 ST-6-01 ST-6-01 MW. 5-215 SPRAGUE PART No. 1FM-31 TM-12 68P18 TM-11 TM-15 1FM-325 TM-1 TM-15 TM-11 TM-22 TM-25 TM-25 TM-15

40、 TM-1 MB-24 TM-15 TM-15 MB-24 TM-24 MS -34 TM-11 TM-15 MS -37 TR-21 TM-1 TM-15 TR-15 MS-44 MS-47 TM-11 Tl-ll 1FM-215 IDENTIFICATION CODES AND INSTALLATION NOTES AF Plate Bypiss Audio Coupling Audio Feedback* Output Plate Bypass T Sync. Coupling 1st Sync. Amp. Plate By Sync. Coupling | 1st Sync. Amp.

41、 Plate De Sync. Coupling Vert. Sync. Coupling Integrator Net. n n Vert. Osc. Grid Cap. Vert. Discharge Vert. Coupling Hor. Sync. Coupling Fixed Trimmer Sync. Coupling AFC Filter Hor. Osc. Cont. Screen Byp. AFC Coupling Phase Shifter Hor. Osc. Grid Cap. Differentiator Net. Hor. Osc. Coupling Hor. Osc

42、. Screen Bypass Hor. Discharge 5% Hor. Sweep Coupling Hor. Output Cath. Byp. Hor. Output Screen Byp Damper Filter Damper Filter 5% HV Filter Tn. Oxide Fixed Trimmer T T n ii Line Filter RF Bypass 1 Q LO INSTALLATION NOTES Tone control Attach to R1A Per Instructions Contrast control , , .,.,-,cte 4.

43、Rll thru R21 are used In the standard coil tuner only. Items R22. R23 are used with ITEM No. LI the RCA tuner only. FILTER RATINGS TOTAL n c INDUCTANCE DIRECT RFSISTANCF I0 CURRENT CURRENT I3IANI.I: 1000 S .310A 37.5Si 1.35 Henry CHOKE REPLACEMENT DATA HOFFMAN PART No. T5100 STANCOR CHCAGO MERIT INS

44、TALLATION PART No. PART No. PART No. NOTES C-2326 00 O tn O O PAGE 19 RadioFans.CN PARTS LIST AND DESCRIPTIONS (Continued) COILS (RF-IF) ITEM No. L2 L3 L4 L5 L6 L7 L8 L9 L10 Lll LIZ L13 L14 Lib LI 6 L17 LIB L19 L20 L21 L22 L23 L24 L25 L26 L27 L23 USE Ant. & RF Grid Colls RF Plate, Mixer Grid & Osc.

45、Colls F 11. Choke Fll. Choke 1st Video IF IF Grid Coke Fll .Choke 2nd Video IF Fll. Choke 3rd Video IF Fil. Choke 4th Video IF 4th Video Cath. Fll. Choke Video Det. Fil. Choke Peaking Peaking Peaking Peaking Peaking Peaking 1st Sound IF 2nd Sound IF Sound Disc. XFMR. Width con- trol coll Horlz. Line

46、arity control DC RES. PRI. oa OS oa oa oa oa oa . 2 2 oa .2S oa .52 .is .52 ioa sa 5.52 52 5.52 52 .12 .12 .12 . 2 2 352 SEC. oa oa 02 02 .12 .12 .12 REPLACEMENT DATA HOFFMAN PART No. T5101 T5201 T5101 T5203 T5101 T5204 T5202 T5101 T5204 T5101 T5E07 T5208 T5205 T5206 T5205 T5206 T-5209 T5209 T5210 T

47、5212 T5211 MEISSNER PART No. NOTES Part of tuner Assy. RF-3, are In matched pairs, with channel number stamped on clip. Part of tuner Assy. RF-3, are in matched pairs, with channel number stamp on clip. Part of tuner Assy. RF-3 11 ii fi it it ii ti n tr n n n ii ti 180 Microhenry coil, wound on 39K2

48、 res. Inductance-250 Microhenries 120 Microhenry coil, wound on 22K2 res. Inductance-93 Microhenries 120 Microhenry c oil , wound on 22K2 res. Inductance-93 Microhenies SPEAKER ITEM No. SP1 SP2 RATING FIELD RES. PM CONE D1A. 11 1/2 V. C. IMP. 3.Jj. V. C. DIA. 1 REPLACEMENT DATA HOFFMAN PART No. 9015

49、 JENSEN PART No. ST-102* MOD.P12-S QUAM PART No. 12AG NOTES * Replace output transformer to match 6-82 voice coll. TRANSFORMER (POWER) ITEM No. TI RATING PRI. 117VAC 2.6A SEC. 1 720VCT .310ADC SEC. 4 6.6VAC 6A SEC. 2 SVAC 2A SEC. 5 6.6VAC (a) 5.0A SEC. 3 SVAC 6A REPLACEMENT DATA HOFFMAN PART No. T5002 STANCOR PART No. P-8152 CHICAGO PART No. TP-3S5 MERIT PART No. P-3063 TRANSFORMER (SWEEP CIRCUITS) ITEM No. T2 T3 T4 T5 T6A B T7 DC RESISTANCE PRI. 402 CT 1502 3402 Tap. 1302 5002 382 852 2202 SEC. sea Tap | 82 13002 oa SEC. 2 62 Tap 5.52 REPLACEMENT DATA HOFF