SG165 AM-FM

STEREO ANALYZER

SCHEMATIC AND PARTS LIST

3200 SENCORE DRIVE . SIOUX FALLS. SOUTH DAKOTA 57107 · (605) 339-0100

SG165 PARTS LIST

REFERENCE DESCRIPTION

CHASSIS MOUNTED COMPONENTS

C4 C27 CRl CR2 Ml M2 RIO R11, 12, 14 R13 R15 R16 R17 R19 SWl SW2 SW3 SW4 Tl T2, 3 TRI

Capacitor, variable, "Rocker" Capacitor, lOOOuF, 15V, Non Polar Diode, 1N4148 Diode, 1N34A Meter, LEFT OUTPUT Meter, RIGHT OUTPUT Control, 75 ohm, L-pad Resistor, 8 ohm, 5%, 22W Resistor, 4 ohm, 5%, 22W Resistor, 16 ohm, 5%, 22W Resistor, 36K, 1 %, ½W Control, 200K, "Marker Height" Control, 20K, 10%, "Rocker" Switch, slide, DPDT Switch, rotary, 4 section Switch, speaker load Switch, power range Transformer, power Transformer, 400 Hz Audio Transistor, 2N3563

POWER SUPPLY BOARD COMPONENTS

ClOl, 102 C103, 108 Cl04, 107 C105, 106 CR101, 102, 103, 104 CR105 R103 R113 TR101 TR102, 103 TR104 TR105, 106

Power supply board assembly Capacitor, .22uF, 100V Capacitor, lOOOuF, 25V Capacitor, 2uF, 15V Capacitor, 250uF, 15V Rectifier, IA, 800 PIV Diode, 6.2V Zener, lNl 766A Control, 25K, Vert, PC Mt. Control, 5K, Vert, PC Mt. Transistor, MJE180 Transistor, 2N5172 Transistor, MJEl 70 Transistor, 2N4248

MPX BOARD COMPONENTS

C201 C202 C206 C218 C225,226,227,228 CR201, 202 CR203-206 CR207-214

R231 R235,239,243,244, 245,246,248,254 R238, 242 R250 R257, 260 R258, 261

Multiplex board assembly Capacitor, .OOluF, 5%, 160V Capacitor, 560pF, 5%, 125V Capacitor, .luF, 10%, 100% Capacitor, .OluF, 5%, 33V Capacitor, 150pF, 5%, 125V Diode, 1N34A Diode, 1N4148 Diode, 1N4148, (2 matched quads) price for 4 diodes Resistor, 3.2K, 2%, ½ W

Resistor, lOK, 1 %, ½ W Resistor, 29.4K, 1 %, ½ W Control, 2K, Vert., PC mt. Resistor, 4.7K, 1 %, ½W Resistor, 17.5K, 1 %, ½W

PART NO.

24B285 24G326 50C5-2 50C3-1 23B45 23B46 15Cll-1 14A72-2 14A 72-1 14A 72-3 14C29-3604 15Cl-3 15C3-26 25G3 25A168 25Al 74 25A181 28B50 28B53 19A7-1

143A47 24G168 24G272 24G133 24G111 16G5 50C4-6 15C7-12 15C7-14 19A29 19A28 19A30 19A14-1

143A46-A 24G188 24G257 24G104 24G183 24G262 50C3-1 50C5-2

50C5-2 14C30-3203 ·

14C29-1004 14C29-2944 15C7-10 14C29-4703 14C29-1754

REFERENCE DESCRIPTION PART NO.

SW201 Switch, rocker, 2P3P 25G170 SW202,203 Switch , rocker , DPDT 25G169 SW204 Switch, slide, 2PDT 25Bl 71 SW205 Switch, slide, 4PDT 25Bl 72 TR201, 202, 205, 206, 209, 210,212,213,214,215,216 Transistor, 2N5172 19A28 TR203 , 204, 211 Transistor, 2N 4248 19Al4-l TR207, 208 Transistor, 2N4274 19A18 Y201 Crystal, 76KHz 47G4-1

MAIN RF BOARD AND AUDIO OSC . BOARD COMPONENTS

Audio osc. board assembly 43A52-A RF board assembly 143A48-A

C301 Capacitor, lOOpF, 5% 24G283 C305 , 341 Capacitor , variable, RF TUNING 24B264 C306, 307 Capacitor, 390pF, 5%, 125V 24G105 C308,337,358,359 Capacitor, lOOpF, 5%, NPO 24G70 C313 Capacitor , .0062uF, 5%, 33V 24G261 C314 Capacitor, 2100pF, 5%, 125V 24Gl 74 C322 Capacitor, .0056uF , 5%, 33V 24Gl 79 C324 Capacitor, 150pF, 5%, 125V 24G262 C328,353 , 354 Capacitor, .OluF, 5%, 33V 24G183 Cl29 Capacitor, .005uF, 5%, 33V 24G259 C330 Capacitor, lOpF . 24G86 C331 , 343,351 Capacitor , 6.8pF, 10%, NPO 24G138 C333 Capacitor , 5pF , 5%, NPO 24G153 C334 Capacitor , 20pF , 5%, NPO 24G77 C342,357 Capacitor, 1.5pF, 20% 24G132 C345 Capacitor , .47uF , 200V 24G146 C349 Capacitor, 2000uF, 25V 24G240 C352 Capacitor, .047uF, 5%, 33V 24G237 CR301, 307 Diode, varicap , BA141 50Cll-6 CR302, 304, 305, 309, 310,311 Diode , 1N4148 50C5-2 CR303 Diode, 1N34A 50C3-1 IC301 Linear IC , No. 748 69A2 IC302 Linear IC , No. 741 69Al L301 Coil, 10. 7 MHz, Adj 46A53 L302,303 Coil, AM RF , Adj 46A54 L304 Coil, 455 KHz, 262 KHz, Adj 46A55 L306 Coil, 5uH 46G6 L305,307 Coil, lOOKHz, 67KHz, Adj 46Gll L308 Coil, FM RF, Adj 46A56 R306 ,~60 , 389 , 392 Control, 50K, Vert, PC Mt . 15C7-11 R375 Control , 25K, Vert, PC Mt. 15C7-12 R387 Control, 20K, Mod Tracking 15C3-25 R391 Control, lOOK, Vert. PC Mt. 15C7-13 SW301 Switch, output selector 25C173 TR301, 302, 303, 306,314,315 Transistor, 2N3563 19A7-1 TR304, 306, 307,320, 321,323,324 Transistor, 2N5172 19A28 TR305, 308, 312, 313, 316 FET , MPF102 19A19 TR310, 318, 322 Transistor , 2N5227 19A16 -1 Y301 Crystal, 10.7MHz 47A18

REFERENCE

MISCELLANEOUS

DESCRIPTION

Front panel escutcheon RF TUNING dial Dial marker, AM Dial marker, FM Indicator lamp and holder Knob, speaker load, power range, microvolt output rocker 4:1 drive , RF TUNING Knob, output selector Knob, RF TUNING Line cord 75/300 ohm matching pad and cable Scope vertical lead Detector probe Auto radio dummy antenna Fuse holder Case wrap assembly

PART NO.

8B68 8A69 8A70 8A71 20A7

21A37 21A56 21G52 21G53 27G12 39G43 39G106 39G45 39G53 64G28 110C275

When ordering parts, please specify model number, part number, and description . Service and parts invoices are C.O.D. unless open account is already established . Please include remittance (check or money order) with your order to save C.O.D. charges. Minimum billing $5.00 .

SENCOi......-c:tE . .. the electronic instrument "analyzer people"

3200 SENCORE DRIVE . SIOUX FALLS . SOUTH DAKOTA 57107 · 16051 339-0100

Form2098 Printed in U.S.A.

SENCORE 3200 Sencore Drive Sioux Falls, South Dakota 57107 Phone: (605) 339-0100

To place an order call our Parts Department 1-800-843-3338

ORIGINAL REPLACEMENT LEADS

UNIT DESCRIPTION PART# PRICE UNIT DESCRIPTION PART# PRICE FE14/16 1 test probe lead 39G24 12.00 CB49 audio cable 39G109 6.00

1 ground lead audio cable adaptor 39G134 6.00 FE20 1 test probe lead 39G28 12.00 RF output cable 39G 124 14.00

1 ground lead RF input cable 39G125 10.00 FE21 1 test probe lead 39G32 18.00 mike holddown strap 39G123 4.00

1 ground lead (R & B) DC volts leads 39G 128 (2) 10.00

CG22 1 black coiled lead 39G37 10.00 FC51 12V input w/inline fuse lead ass 'y. 39G111 8.50

FE23 1 probe lead 39G40 12.00 input probe 39G112 19.75

1 ground lead 4' cable BNC to BNC 39G 137 12.00

CG25 1 black RF cable NPN 6.00 short pick-up loop 39G138 8.00

TF26 1 red-green-yellow cable 39G70 10.00 LC53 test lead ass 'y. 39G143 19.75

w/ E-Z clips test lead adaptor 39G144 6.00

FE27 1 probe lead 39G79 12.00 button hold assessory 39G145 3.50

1 ground lead TF54 black test lead w/ E-2 clip 39G99 10.00

TC28 1 red-green-yellow cable 39G70 10.00 CA55 test lead ass 'y. 39G143 19.75

w/ E-2 clips test lead adaptor 39G144 6.00

PS29 1 probe 39G80 34.95 button hold accessory 39G146 3.50

1 blue & 1 black lead NPN 5.00 DVM56 1 probe lead, 1 red, 1 black 39G147 12.00

probe tip 68A19 6.00 1 TP222 40.00

TF30 1 red-green-yellow-blue cable 39G84 12.00. PR57 1 probe lead 39G148 8.75

w/ E-2 clips (specify banana SC60A probe (specify blue or black) 39G149 49.95

plug or Din plug) probe tip 68A42 6.00

CR31A grey cable with 11 pin socket NPN 16.00 SC61 probe (specify blue or black) 39G153 79.95

DVM32 1 probe lead 39G91 15.00 probe tip 68A42 6.00

1 ground lead voltage probe 39G157 12.00

DVM35/ 1 probe lead 39G96 17.50 RC145/ 2 red leads , 2 black leads NPN 9.00

36/37 1 ground lead 146

red probe tip 68930 5.00 FE149 1 test probe, 1 ground lead NPN 10.00 DVM38 1 test probe 39G91 12.00 TF151 1 red, 1 yellow, 1 blue, 1 black test 39G51 12.00

1 ground lead lead, banana plus/ E-2 clip

TF40 1 black cable w/ E-2 clips 39G99 10.00 SM152 matching trans 39G43 - replaces 39G43 10.50

CB41 Sensor 39G101 48.00 39G22

CB42 mike tester 39G102 19.00 detector probe - replaces 39G23 39G45 6.00

RF cable ass 'y. 39G104 7.50 RF cable NPN 12.00

RF probe ass 'y. (isolation) 39G105 14.00 grey cable w/alligator clips 39G106 (3) 7.00 ea.

audio lead ass 'y. (grey cable 39G106 7.00 vertical cable NPN 6.00

w/ banana plug) SM158 matching transformer 39G43 10.50

audio lead ass'y. (grey cable 39G109 6.00 detector probe 39G45 6.00

w/ phone plug) FE160 1 probe lead, 1 ground lead, 39G33 12.00 RF probe ass'y . 39G110 15.00 1 3 amp lead

(50 ohm terminated) CR161 grey cable NPN 9.00 PS43 fused test cable (red) (3 per unit) 39G 107R 4.00 ea. PS163 probe (sold in matched sets of 2) 39G80 34.95 FC45 12V input w/inline fuse lead ass'y. 39G111 8.50 probe tip 68A19 6.00

input probe 39G112 19.75 UPS164 12 GA cable ass'y. 39G39 12.00 TF46 black cable w/ E-2 clips 39G99 10.00 1 red lead, 1 black lead

VA48 Matching Transformer (300 ohm) 39G72 10.00 SG165 matching pad 39G43 10.50 audio lead ass'y. (grey cable w/ 39G106 8.00 grey cable w/alligator clips 39G106 7.00

banana plug) detector probe 39G45 6.00 fused test lead (yellow) 39G 107Y 4.00 auto radio adaptor 39G53 6.00 RF cable (BNC to F) 39G117 12.75 RF cable 39G117 12.75 IF input adaptor 39G118 4.00 TF166 1 red, 1 blue, 1 yellow, 1 black 39G51 12.00 1 red, 1 black, 1 blue 39G120 3.75 ea. lead, (banana plug to E-2 clip) (specify color needed) RC167 2 red leads , 2 black leads 39G52 9.00

CR168 grey cable NPN 16.00 Prices in effect until August 1, 1983 CG169 RF cable NPN 8.00

Form 2294 matching transformer 39G72 10.00

Setup Books ForTC114 , 130,142 & 154

Form 957 - $8.00 ForTC162 , 28

Form 1765 - $8.00 ForVA48

Form 1764 - $8.00 For MU140/150

Form 1814 - $10.00 Forall CRT Testers

Form 3019- $12.00

Additional CRT sockets also available

Manuals/Schematics available TC109 TR110 SM112B BE113 TC114 TR115 TM116 SS117 PS120 CG122 BE124 CG126 PS127 CR128 TC130 TC131 ES132 CR133 FS134 CG135 TC136 SS137 CG138 TR139 MU140 CG141 TC142 CR143 RC144/145/146 FC147 PS148 FE149 MU150 TF151 SM152 CG153 TC154 FT155 BE156 PM157 SM158 CG159 FE160 CR161 TC162 PS1631nst. PS163 Svc UPS164 SG165 TF166 RC167 CR168 CG169

$4.00 4.00 4.00 N/C 4.00 N/C N/C 4.00 4.00 4.00 N/C 4.00 4.00 4.00 4.00 4.00 N/C 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 N/C N/C 4.00 4.00 4.00 4.00 5.00 4.00 4.00 4.00 N/C 4.00 5.00 4.00 4.00 5.00 8.00

12.00 10.00 8.00

12.00 4.00 5.00 8.00 8.00

To place an order call our Parts Department 1-800·843-3338

Fuses 44G4 1 Amp , 3 AG Fast Blow 44G6 .6 Amp , 3 AG 250V Fast Blow 44G10 1.5 Amp, 3 AG Fast Blow 44G12 2 Amp, 3 AG 250 V Fast Blow 44G13 1116th Amp, 3 AG 250 V Fast Blow 44G20 1 Amp , 3 AG Slo Bio 44G21 1/8 Amp, Micro 44G22 2 Amp, 1000 V Fast Blow 44G23 4 Amp, 250 V Slo Bio

All fuses (6) for $5.00 except 44G22 - $6.00 each

MX11 CG10/12 CR13 FE14/16 TR15 TF17 CG18 CG19 FE20 FE21 CG22 FE23 RC24 CG25 TF26 FE27 TC28 PS29 TF30 CR31 DVM32 YF33 DVM35 DVM36 DVM36 DVM37 DVM38 TF40 CB41 CB42 CB44 FC45 TF46 PR47 VA48 CB49 PR50 FC51 WBA52 LC53 TF54 CA55 DVM56 PR57 SC60/60A SC61

N/C 4.00 4.00 4.00 . 4.00 4.00 4.00 4.00 4.00 4.00 4.00 4.00 N/C 4.00 5.00 5.00 5.00

10.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 8.00

10.00 5.00 5.00

12.00 N/C 8.00 8.00 N/C

12.00 12.00

N/C 10.00

N/C 12.00 5.00

12.00 12.00 8.00

15.00 15.00

.. ·

All manuals include a schematic diagram and parts list. If the original manual is no longer available from stock a xerox copy will be substituted.

WAVEFORMS 1-8 TA KEN IN 10.7 SWEEP ANO MARKERS

1. 60Hz, 1.4V ~p Squa re wave

2 . 2.5V P-P Markeri, 30Hz 5-p rat•

3. 60Hz. 1.4V p.p SQuare wavr

(\vl\ If\ V \J \

4. 400Hz, 2.8V ~P Sine wave

5. 400Hz, 2.Jv p-p Square wave

\(\f\l\(1(\ I i I\ i \ I\ I. \ i \ 1 \ I \ I \; . \/VIJ 1./\/v

6. 100KH.t, 2V p-p Slne wave

7. 10.7MHz Swept, .14V p-p, 30Hz Sweep rat,:

a QO Mgr .. ~ se between 84 and BS

WAVE FORM 9 TAKEN IN 67KHz SCA

!l\JVV 9. 67KHz, 2V J>P Sine wave

TO C5

T O B4 GY

, - _-_-----=--------Cz~d), L I

Su, C27

10001

CG

-i-r 2

=C-"-+<-=,<>--<:i)-- --.-3 2

R301

FACTORY SELECTED

R304 IOK

C303 + 2,FJ

R306 50K

R305

FMIF,AMIF AMRF OSC

·s' •6 BLANKER

18K C30]

TO C6

H 7

V Cl2 TO B3 8

TO Bl R

TO •2

~

~

L3 05 100 KHz

FR£0. 2mh

10

R329 470

IOuf R307

CR301

BIRDY AMPLIFIER

C317

47 R326 220

R323 R325

IOOK 470 C318

R322 001 CR303

1.2:K

R324 IN34A

4 .7K L306 5uh

33K

C3D4

C311

H,

R390

10

R343 r C327 47 0 .01

TR310 TR308 2N5227

ISOLATION BUFFER

R33B C326 10 r EI!

22K

C310

21Jf +

lB!J

7

5.6K

TO Cl---l-c"=,<>--0

8 I I

SWITCH POSITIONS (SW301) I. 6 7 KC 2.MPX 3 .10 .7 SWEEP AND MARKERS 4 .10.7 CRYSTAL 5.10.7 IF 6 . FM RF 7. AM RF l.~55 KC 9. 262 KC

10.400 Hz SINE I 1.400 Hz SQUARE 12.EXTRA CRYSTAL

MAIN RF P.C. BOARD NO. 43A48D

e

ALL FEEDTHROUGH CAPACITORS 1000 pf UNLESS OTHERWISE SPECIFIED

ALL BIPOLAR TRANSISTORS ARE MPS5172 UNLESS OTHERWISE SPECIF IED

ALL FET'S ARE MPFI02 UNLESS OTHERWISE SPECIFIED

L _____________ ~m

AIOI

4 .7K

Rl02

4.7K

HORIZ . .,_-~ VV>.----i'e l SWEEP

OUTPUT

RIii 6.8K

RIIO ~.6K

Rll3

Rll2 IOK

+ CI05

250u f

5K -v ADJ.,

Rll4 IOK

+ CI06

250 uf

LAST NO. Rll7 Cl08 CRl05 TRl06

UNLESS OTHERWISE SPECIFIED ALL CAPACITOR VALUE GREATER THAN ONE ARE IN PICOFARADS (pf) . VALUES LESS THAN ONE

90 DEGREE PHASE BETWEEN 84 ANO 85

ARE IN MI CROFARADS {ufl.

SCHEMATIC DIAGRAM SG 166 AM•FM STEREO ANALYZER

TOA.9

TOAIO

TOAS

TO AII

TOAi~

G

CR215 IN4148

SW2 04

I

-~

R39 1 J0.7 LEVEL I

50K AM RF LEVEL

r

SW301C

SW301E

LAST NO

R 39!5 IOOK

IOuf

R390 OMIT Ri~i·,~ig:~:+:~ft,111,' 374 , 342

C359 OMIT C325,346 CR3tl OMIT CR306,308 TR324 OMIT TR 30 9,311 ,317 ,319

R353 5.6K

~ R352 100

+ C339

FMRF

I~

osc

R388 FMRF ffiEO . 12K

R36S

10 R370 I C348 330 ,0 1

Eill

R357 3.3K

10.7 MHz & EXT. CRYSTAL OSC

SW~OIG R348

'"' C333

C334

R393 4.7K

TR3J3

C35 1

6.Bpf

C335

JOI

R350 100

AUDIO OSC P. C. BOARD NO. 43A52~---~

R376 18K

R375 400 Hz

2.3VP·P ~ - ""2"'s"K-, LEVEL

R379 R378

15K 130K

1.5pf

R384 10

I I I I I I I I I I.

_J

I I

I I I I

I

SQUARE WAVE

IC 301· PIN I -

2-

3-4-

·-6-

7-

a-

IC 302-P lN I -

2 -

3-4-5-

6 -

7 -

a-

COARSE MICRO VOLT OUTPUT

7 7

OUTPUT MEASURED IN 10.7 SWEEP a MARKERS

- 11.0V TR 301 TR3 10

GRO. ,02 311

,IBV 303 3 13

- 12V 305 316

•IIV 306 317 OUTPUT 307 318

+ 12V 308 319

NC 309

-11.5

0 TR ?10-4 VARIABLE AM MOD. 30%

0 TR 312 67 KHz

- 12V TR 314 VARIABLE FM -12V TR 315 VARIABLE FM

OUTPUT

+12v

NC

Cl

1001

-=-• I

SW 3A

C27 s

IOOOuf

Cl

1001

SW3A 2

RII

8J\..22W Rl2

8.A22W

Rl3

4A. 22W

R 14

R 15 8.../\. 22W

16.J\. 22W

4 5

BLACK

BLK. / W.

BLK./ BLUE

BLK./YE LLOW

BLK ; / RED

All

SJ\.. ZZW

R ll

B...J\- ZZW A13

4..l\..22W

31------ ..

C2 1001 4---~-·-·4~~ C27 5 RIIS 8..tLi.ZW

IOOOuf ltJL 22W

SW4A

sw1•

FINE MICRO VOLT OUTPUT

Rl7 4 .7

LEFT CHANNEL

T2 RED

BLUE R l6 2

SW48 36K GRA Y

3 CRI

IN-1M8

YELLOW

RIGHT CHANNEL

!5 POS ITION SWITCH 3 POSIT ION SWITCH

I. SPEA KER I. 2YFIMS SEPARATION

2 . 4..J\.. 2. 10 WATTS

3. 8..l'L 3. 100 WATTS

4. 16..J\..

!5. 52...A..

AUTO RADIO ADAPTOR

MATCHING PAD

A403

12 IM R404

120

DETECTOR PROBE

R407

470 K

Cl7 ___________ _J R

38 KHz MULTIVIBRATOR

R205

TE ST POINT A

R247 IOK

VOLTAGES MEASURED 19 KHz 10%

LE FT 400Hz • Off

R246

RIGHT 400 Hz - OFF

R220

100 + C212

J2,, ~{ I I

+12

R233 33K

R234 621(

R265 5.I K

R219

JO

SW205 r---- ----, : R235 j

R23B

VOLTAGES MEASURED AT TR 207 & TR 20B ARE

"WITH 200K ISOLATION RESISTOR

19 KHz MULTIVIBRATOR

60KHz LOW PASS FILTER

MPX P.C. BOARD NO. 43A46A

+12

LA ST NO. R263 OMIT R236 , 240 C229 CR215 TR 2 16

WAVEFORMS 10-15 TAKEN IN MPX SIGNAL, L 400Ht ON, R 400Ht OFF, 19KHt 10%

10. 76KHz, 12V i>P Square wave

11. 38KHi , 24V p,p Square wave

R263 10

TOA7

TO A l

ISSUE DAT E : 4- 22-81

12. 38KHz. 2-4V Pi> Scpare - II!

13. 19KH.z, 12V p--p Square wave

14. 19KHz, 1.IV p.p Sille wave

15. -4Cffib, 2.5V p.p Compo,i;ite MPX ,ignal