Emerson-637-637B-637C-Sams-97-4电路原理图.pdf

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1、PlIOTOFACT* Folder EMERSON MODELS 614, B, BC, C, 637, B, BC, C, 644B, BC, C, 647B, BC, C, 648B VOLUME CONTROL ON-OFF SWITCH CONTRAST CONTROL FINE TUNING EMERSON MODEL 631C CHANNEL SELECTOR TRADE NAME Emerson, Models 614, B, BC, C, 637, B, BC, C (Ch. 120110, B, BC, C), 644, B, BC, C, 647, B, BC, C (C

2、h. 120113, B, BC, C), 648B (Ch. 120110E) MANUFACTURER Emerson Radio and Phonograph Corp., 111 8th Ave. , New York, New York TYPE SET Television Receiver TUBES Twenty Three or Twenty Four POWER SUPPLY 105-125 Volts AC-60 Cycle TUNING RANGE Channels 2 thru 13 RATING 2 Amp. at 117 Volts AC INDEX Alignm

3、ent Instructions 6,7 Block Diagram 20 Disassembly Instructions 19 Horizontal Sweep Circuit Adjustment . . 19 Parts List and Description 16,17,18 Parts List (Tuner #470233) 14 Photographs Cabinet-Rear View 19 Capacitor Identification 11, 22 Chassis-Top View 3,13 Photographs (continued) RF Tuner (#470

4、603, 470604, 470607) RF Tuner (#470605) . RF Tuner (#470233) . . Resistor Identification Trans., Inductor and Alignment Identification Schematic (Main) Schematic (Tuner #470233) . Tube Placement Chart Voltage and Resistance Measurements HOWARD W. SAMS |7 THRU |8| I J : :LB . S 1 * 4 a*;is i VEL THE

5、COOPERATION OF THE MANUFACTURER OF THIS RECEIVER MAKES IT POSSIBLE TO BRING YOU THIS SERVICE PARTS DOTTED IN ARE NOT USED IN ALL MODELS. WHEN DOTTED IN PARTS X ARE BROKEN. A PHOTOFACT STANDARD NOTATION SCHEMATIC Howard W. Sams AC Volfage measured at 1,000 ohms. 2. Pin numbers are counted in a clockw

6、ise direc- tion on bottom of socket. 3. Measured values are from socket pin to com- mon negative unless otherwise stated. 4. Line voltage maintained at 11 7 volts for volt- age readings. 5. Front panels controls set at minimum. 6. Where readings may vary according to the setting of the service contr

7、ols, both minimum and maximum readings are given. RadioFans.CN RF TUNER 470603, 470604, 470607 1 RF TUNER *470603, 470604. 470607 PAGE 1O RadioFans.CN CHASSIS BOTTOM VIEW-CAP/ PAGE 22 RadioFans.CN EMERSON MODELS 614, B, BC, C, 637, B, BC, C, 644B, BC, C, 647B, BC, C, 648B o LJ Q cr O U RadioFans.CN

8、CHASSIS BOTTOM VIEW-RESI PAGE 12 RadioFans.CN 03 m P * O ft V* o 00 m P 09 03 oo RESISTOR IDENTIFICATION PAGE 21 RadioFans.CN CHASSIS-TOP VIEW 98*9 3 39 9Zfr9 3 39 9frfr9 3 39 9 3 39 79 fri9 siaaow RadioFans.CN A PHO7OFACT STANDARD NOTATION SCHEMATIC Howard W. Sams RF Decoupling Fixed trimmer Osc. D

9、ecoupling Fixed Trimmer Osc. Feedback Osc. Feedback Filament Bypass Mixer Decoupling Fixed Trimmer ITEM No. R601 R602 R603 R604 R605 R606 R607 R608 R609 R610 R611 R612 R613 R614 RATING RESISTANCE 1508 1502 1000S2 47002 4700S2 10002 1 Meg. 10KS2 10002 1502 47002 47S 100K2 LOOKS WATTS X 1 1 i X i i i

10、IDENTIFICATION RF Grid RF Grid Bias filter RF Plate RF Plate RF Decoupling Mixer Grid Mixer Grid shunt Mixer Decpupling Decoupling Osc. Plate Osc. Cathode Osc. Grid Osc. Grid COILS ITEM No. L601 L602 L603 L604 L605 L606 i USE Ant. Input Interfer- ence Trap Interfer- ence Trap Filament Choke Mixer Gr

11、id Trap 1st. Video IF and Sound Trap DC RES. PRI. 02 OS: Offi 02 02 .22 SEC. 02 PAGE 14 RadioFans.CN RF TUNER-LEFT SIDE RF TUNER-RIGHT SIDE PAGE 15 RadioFans.CN TUBES (SYLVANIA or Equivalent) PARTS LIST AND CAPAC1TOF ITEM No. VI V2 V3 V4 V5 V6 V7 V8 V9 V10 Vll V12 V13 V14A B V15 V16 vn vis V19 V20 V

12、21 V22 V23A B C USE RF Amp. Converter Oscillator 1st Video IF 2nd Video IF 3rd Video IF Video Del. -AGC 1st Video Amp. 2nd Video Amp. - Sync. Amp. DC Rest. -Sync. Sep. Sound IF Amp. Limiter Disc. -AF Amp. Audio Output Vert. Mult. & Output Vert. Osc. & Disch. Vert. Output Hor. phase Inv. - DC Amp. Ho

13、r. AFC Hor. Osc. -Hor. Disch. Hor. Output Damper HV Rect. LV Rect. Picture Tube Picture Tube Picture Tube REPLACEMENT DATA EMERSON PART No. 800535 800536 800536 800535 800535 800533 800541 800533 800026 800026 800533 800533 800035 800270 800380 800380 800016 800380 800541 800380 800004 800037 800450

14、 800290 810000 810003 STANDARD REPLACEMENT 6AG5 6J6 6J6 6AG5 6AG5 6AU6 6AL5 6AU6 12AU7 12AU7 6AU6 6AU6 6T8 6V6GT 6SN7GT 6SN7GT 6K6GT 6SN7GT 6AL5 6SN7GT 6BG6G 6W4GT 1B3GT 5U4G 10BP4 I2LP4 12QP4 RMA BASE TYPE 7BD 7BF 7BF 7BD 7BD 7BK 6BT 7BK 9A 9A TOK 7BK 9E 7AC 8BD 8BD 7S 8BD 6BT 8BD 5BT 4CG 3C 5T 12D

15、 12D 12D NOTES Used in chassis #120113, B, BC, C Used in chassis #120110, B, BC, C Used in chassis #120110, B, BC, C Used in chassis #120110, B, BC, C, 120110E Used in chassis #120113, B, BC, C Used in chassis #120113, B, BC, C ITEM No. C52 C53 C54 C55 C56 C57 CSS C59 C60 C61 C62 C63 C64 C65 C66 C67

16、 C68 C69 C70 C71 C72 C73 C74 C75 C76 C77 C78 C79 C80 RATING CAPH VOLT .047 .002 .002 .001 .005 1000 .1 .033 1000 1000 .05 .25 .005 110 780 470 .001 400 600 600 600 600 500 200 600 500 500 400 200 600 500 500 500 600 .1 1 200 . 05 600 .1 .05 .047 .033 500 .1 .047 .01 .25 .05 200 400 600 600 10000 400

17、 400 600 400 600 REPLACEMENT DAI EMERSON PART No. 923062 S23088 923088 923079 923078 910027 922014 922024 910027 910027 923068 323080 923077 910010 910023 910017 923079 923067 923073 923067 923062 923073 923074 923003 923064 922101 923075 923066 923073 AEROVOX PART No. P488-047 P688-002 CENTRALA PAR

18、T No D6-202 P688-002 D6-202 P688-001 j D6-102 P688-005 D6-502 1467-001 P288-1 P688-033 1467-001 1467-001 P488 05 P488-25 P688-005 1468-0001 1464-00075 1469-0005 P688-001 P288-1 P688-05 P288-1 P488-05 P688-047 P688-033 HV-500 P488-1 P488-047 D6-102 D6-102 D6-I02 D6-502 D6-121 D6-751 D6-471 D6-102 TV1

19、-501 P688-01 D6-103 P488-25 P688-033 CAPACITORS Capacity values given in the rating column are in mfd. for Electrolytic and Paper Capacitors, and in mmfd. for Mica and Ceramic Capacitors. * Not used in all models. | Chassis 120110B and 120113B uses . 005MFD in this applicati 4 Chassis 120110B and I2

20、0113B uses . 003MFD in this applicati Chassis 120110B and 120113B uses . 05MFD in this applicatio Chassis 120110B and 120113B uses MFGRS Part No. 925161 # Used only in chassis 12011QB and 120113C. 1T Some models use . 05MFD in this application. CONTI ITEM No. CIA B C D C2A B C D C3A B C C4 C5 C6 C7

21、C8 C9 CIO Cll C12 C13 C14 CIS C16 C17 CIS C19 C20 C2I C22 C23 C24 C25 C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 RATING CAP. 40 40 10 25 40 40 10 100 10 80 80 5 1000 1000 1000 100 20 10 1000 100 10 300 1500 1500 1500 5000 1500 1500 75 270 1500 270 1500 1500 47 .1 .056 1500 220 150 .047 .01 .1 .

22、1 10 CSS 1500 C39 i 1500 C40 C41 C42 C43 68 1500 1500 110 C44 . 001 C45 . .01 C46 .01 C47 1500 C48 .047 C49 C50 C5I .005 .01 VOLT 450 450 450 50 450 450 450 100 450 250 250 200 500 REPLACEMENT DATA EMERSON PART No. 925161 925166 Note 3. Chassis 120110B and 120113B use 2 Meg. control part I Note 4. C

23、hassis 120110B and 120113B use 5000U control part N) 5. 2 Henries REPLACEMENT DATA EMERSON PART No. 737011 STANCOR PART No. MERIT PART No. C-2974 CHICAGO PART No. INSTALLATION NOTES COILS (RF-IF) ITEM No. L2 L3 L4 L5 L6 L7 L8 L9 L10 Lll L12 L13 L14 L15 L16 L17 LIB L19 L20 L21 L22 USE Ant. Coil RF Pl

24、ate, Mixer Grid, Osc. Coils 1st Video IF Primary 1st Video IF Secondary Fil. Choke Fil. Choke 2nd Video IF 3rd Video IF RF Choke 4th Video IF Peaking Peaking Peaking Peaking Sound IF Disc. Trans. RF Choke RF Choke Horiz. Osc. Trans. Width Horiz. Lin. DC RES. PRI. on Ofl 212 2n on on .4n .2n sn .en e

25、n 3.8n 9.sn 9.sn 2. in 1.7(1 .in son 3.2S1 .en sen SEC. on on .in .en 2. in .90 1.20 REPLACEMENT DATA EMERSON PART No. 720056 720042 720109 705014 720057 708096 708097 708095 708095 720081 708018 705009 738008 708082 708003 MEISSNER PART No. 19-1920 19-1921 19-1921 NOTES Part of tuner #470607. Part

26、ot tuner #470607. Part of L4 20 microhenries 75 microhenries 45 microhenries 180 microhenries 180 microhenries Alternate Part *708017. 3 millihenries MISCELLANEOUS ITEM No. MIA B C D M2 MSA B PART NAME RF Tuner RF Tuner RF Tuner RF Tuner Ion Trap Fuse Fuse EMERSON PART No. 470233 470452 470604 47060

27、5 708084 808050 808170 NOTES .25A 250V .25A 250V PAGE 18 RadioFans.CN FOCUS CONTROL LEVER VERT-HORIZ CENT. LEVER OB P ft HORIZ HOLD BRIGHTNESS HORIZ . DRIVE VERT HOLD CABINET-REAR VIEW OB O ft|2 00 0* HORIZONTAL SWEEP CIRCUIT ADJUSTMENTS Turn the set on and tune in a TV station, preferably a test pa

28、ttern. Turn the horizontal hold control to synchronize the picture horizontally. Turn the horizontal drive control clockwise as far as possible without crowding part of the picture. Adjust the horizontal size slug (Bl) until the picture is of proper width. Adjust the horizontal linearity slug (B2) u

29、ntil the picture is symmetrical from left to right. Slight readjustment of the horizontal drive control may be necessary. DISASSEMBLY INSTRUCTIONS 1. Remove six phillips head screws holding rear cover. 2. Remove four push-on type control knobs. 3. Disconnect built-in antenna and speaker plug. 4. Rem

30、ove five 7/16 hex head bolts holding chassis. Remove chassis. 5. Remove two 5/16 hex nuts holding speaker. Remove speaker. PAGE 19 RadioFans.CN I m K O AFAMP. 1/2 V12 AUDIO OUTPUT V13 SOUND IF AMP LIMITED 1 ST VIDFO IF AMP. V 3 2ND VIDEO IF AMP. V 4 3RD VIDFO IF AMP. V 5 1ST VIDEO AMP. V7 2ND VIDEO AMP 1/2 V8 DC REST. 1/2 V 9 AGO RECT. 1/2 V6 HORIZ. PHASE INS DC AMP. V16 HORIZ. AFC V17 HORIZ. OSC. & DISCHVie HORIZ. OUTPUT V19 DAMPER V20 HV RFCT. V21 BLOCK DIAGRAM RadioFans.CN