GE MASTER Progress 4ER42E10-33 Page 13 Maintenance Manual Download | Manualshive

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Summary of Contents for MASTER Progress 4ER42E10-33

Page 1: ...i v i t y EIA Two Signal Method 20 dB Q u i e t i n g Method Spurious Response F i r s t O s c i l l a t o r S t a b i l i t y Type ER 42 E Receivers Type ER 42 G Receivers Modulation Acceptance Squel...

Page 2: ...n 8 U s a b l e S e n s i t i v i t y 12 dB SINAD 8 R l o d u l a t i o n A c c e p t a n c e B a n d w i d t h 8 R e c e i v e r T r o u b l e s h o o t i n g 9 OUTLINE DIAGRAM 1 0 SCHEMATIC DIAGRAM...

Page 3: ...ector 5443 A r e g u l a t e d 10 v o l t s is used f o r a l l r e c e i v e r s t a g e s e x c e p t t h e a u d i o PA s t a g e which o p e r a t e s from t h e 12 v o l t system s u p p l y C e...

Page 4: ...r y s t a l and up t o t h r e e a d d i t i o n a l c r y s t a l c i r c u i t s can be added The 10 volt jumper is removed and t h e p r o p e r frequency is s e l e c t e d by s w i t c h i n g t...

Page 5: ...r low side i n j e c t ion v o l t a g e 11 945 kHz i s applied t o t h e base o f t h e 2nd mixer The High IF signal from t h e f i l t e r and t h e i n j e c t i o n voltage from t h e 2nd o s c i...

Page 6: ...e emitter of n o i s e a m p l i f i e r Q 8 p r o v i d i n g a h y s t e r e s i s l o o p i n t h e s q u e l c h c i r c u i t When a weak s i g n a l opens t h e s q u e l c h t h e s i g n a l...

Page 7: ...e e d i n g a DC v o l t a g e t o t h e b a s e o f D C ampli f i e r A426 Q10 i n t h e r e c e i v e r T h i s removes t h e b i a s o n t h e r e c e i v e r a u d i o s t a g e s a n d h o l d s...

Page 8: ...e 3 Removing Top Cover F i g u r e 4 Removing Bottom Cover BACK COVER MOUNTING FRAME METERING JACK RETAINING SCREWS FOR FRONT CASTING 1 EACH SIDE LOCKING HANDLE IF AUDIO SQUELCH DISCRIMINATOR CHANNEL...

Page 9: ...E T e s t S e t Both r e a d i n g s must b e w i t h i n 0 5 v o l t Do n o t a t t e m p t t o b a l a n c e r e a d i n g a n y c l o s e r t h a n 0 0 5 v o l t Z e r o 7 2nd F AMP Maximum I A p p...

Page 10: ...r w h i l e t u n i n g L 1 a n d L 2 u s e t h e p e a k w i t h t h e s l u g n e a r e s t t h e t o p o f t h e c o i l A d j u s t C 4 2 3 f o r a s m a l l d i p i n m e t e r r e a d i n g 3 Z...

Page 11: ...NSULATED WIRE RC 1600 F i g u r e 5 C o a x i a l C a b l e and T e s t Loop RF SELECTIVITY DEGREES CENT1GRADE 5 0 60 70 so sb l o o i o 1 2 0 DEGREES FAHRENHEIT RC 1599 REMOVE THREE SCREWS TO SWING B...

Page 12: ...0 I D 3 Y P m ID Y 5 h I D w 0 P O c P O 1 9 l m a r 0 r i c c I D I D 0 3 1 ri u 0 0 3 r i p I D P CI W I D r r J C J 0 P 0 r i o r 3 3 0 P w c m I D J r 8 h m O W 5 a 0 m 1 0 O r 0 Y C I J I D P W u...

Page 13: ...t o t h e s i d e o f t h e ICOM 2 C u n n e c t t h e l r e q u e n c y c o u n t e r t o L5 on t h e 1st Osc htult u s i n g t h e 4 t u r n t e s t l o o p and c a b l e shown i n F i g u r e 5 3...

Page 14: ...N G E s w i t c h t o t h e SET LEVEL Lter o u t o f t h e c i r c u i t a n d nput LEVEL c o n t r o l f o r a 2 n a mid r a n g e 3 0 ng t h e s i g n a l g e n e r a t o r o u t t h e RANGE c o n t...

Page 15: ...l y z e r i n t h e 2 0 0 t o 2000 Hz d i s t o r t i o n r a n g e p o s i t i o n 1000 Hz f i l t e r i n t h e c i r c u i t Tune t h e f i l t e r f o r minimum r e a d i n g o r n u l l on t h e...

Page 16: ...h e r t z w i t h k 3 3 kHz d e v i a t i o n t o a n t e n n a js 5441 B With Five Watt S p e a k e r D i s c o n n e c t s p e a k e r l e a d p i n from 5701 on r e a r of C o n t r o l U n i t Con...

Page 17: ...f e r t o R e c e i v e r A l i g n m e n t P r o c e d u r e lC h e c k v o l t a g e r e a d i n g s o f RF Anip 1 s t Alixer a n d HI I F Amp lMake SIMPLIFIED GAIN CHECKS S T E P 2 A 1 L O W AUDIO...

Page 18: ...2 V o l a t g e R a t i o 1 Check r e s u l t s w i t h t y p i c a l v o l t a g e r a t i o s s h o w n o n d i a g r a m RF AMP IST MIXER QI QI J441 ANT IST OSC IST MULT X4 MULT X3 Q2 QI 2 4 4 4 t...

Page 19: ...ES BY 0 8 VDC 0 25 VDC GENERATOR OUTPUT GE ERATOROUTPUT GENERATOR OUTPUT GENERATOR OL SHOULD BE aPPRoX SWLD BE nPPRox SHOULD BE APPROX SHOULD BE AF READING 20 MILLIVOLTS 600 MICROVOLTS 5 MICROVOLTS 0...

Page 20: ...DI 5 0 MILLIVOLT 0 I V P I 3 v o l t s a c r o s s 3 5 ohm b t a i n e d s e t t o a p p r o x SCOPE SETTING c o u n t e r c l o c k w i s e y a l i g n e d en s y s t e m n e g a t i v e and l MICROV...

Page 21: ...SIGNAL STANDARD SIGNAL STANDIRD SIGNOL STANDARD SIGNAL STANDARD SIGNAL STANDARD SIGNAL CONNECT V T V M OR SCOPE ACROSS 3 5 n LOAD BETWEEN J 4 4 2 7 AND J442 15 WITH SPEAKER DISCONNECTED TROUBLESHOOTI...

Page 22: ...IST MIXER A412 R F AMP A410 A41 I...

Page 23: ...A426 910 ONLY...

Page 24: ...406 420 MHZ 450 470 MHZ A415 I FREQ A41P A416 2 FREQ A415 A417 4 FREQ A42C 406 420 ksRf 470 MHZ A432 I FREQ A434 A433 4 FREQ A435 2ND MIXER A424...

Page 25: ...A424 2ND MIXER BOARD 2ND OSC 2ND MIXER Q 4 Q 2 IST LO IF AMP Q3 RII JI P307 TO J 4 4 2 I SF24W BK EL MULT 2 Rev 24...

Page 26: ...IK A ONE MILLIVOLT MOO IUNSQUELCHED AND 5 I 1 E HECK FOR PROPER OSC IST lJLT A415 A420 S F 2 4 W R I R 4 1 2 MEASURE C Q Q2 f LEAD CURRENT WIT IST OSCILLATOR BOARD OVED SHOULD BE 0 S F 2 4 W O RENT W...

Page 27: ...RKEL WITH 8 X USED ONLY I N 2 AND 4 FREQ UNITS USED ONLY I N SlPlGLE FREQ UNITS 190413090 Rev 1 USED ONLY FOR 4 FREO A 4 5 0 4 7 0 MHZ 4 q 6 4 2 0 M H z DA USED IN SINGLE FREO O N L Y FREQ 4 FREQ 3 FR...

Page 28: ...WITH TEST SET MODEL 4EX3Al0 OR A 2O 000 OHM PER VOLT METER NOTE TO CHECK FOR PROPER OPERATION OF IST MIXER 4412 MEASURE CL RRENTIOV CIRCUIT W R LEAD CURRENT WlTH FIRST OSC XTAL REMOVED SHOULD BE 0 6 T...

Page 29: ...COUNTERCLOCKWISE M A W M SQUELCH US SQUELCH CONTROL FULLY CLOCKWISE WlTM A ONE MILLIVOLT MOMILATED SIGNAL UNSQUELCHED AND 5 WATT AUDIO WTPUT NOTE TO CHECK FOR PROPER OPERATION OF IST MIXER 8412 MEASUR...

Page 30: ...LIER i 2NO IF AMP IST LIMITER MULTIPLIER I AF OUT 1 SYSTEM NEG DISCRIMINATOR REG lOV A F OUT 2 G N D C 4 2 7 2 W BK EL A 4 2 6 J 5 SF24 W BR A426 J 6 SF24 W 0 G A 4 1 5 A 4 2 0 J 6 A 4 3 2 4 3 5 J 6 T...

Page 31: ...A 4 2 6 I F AUDIO Et SQUELCH BOARD 3RD LIMITER TDISC AUDIO NOISE AMP NOISE I Q 4 Q5 QE TONE AMPS QI Q4 RIB 6 2K...

Page 32: ...R 8 4 2 OK P314 P315 P316 P317 P 3 2 0 P321 TO A 4 2 8 J I TO J 4 4 3 4 TO T 8 2 4 TO J443 10 TO A 4 2 8 J 6 SF24 W 0 BL SF24 W BK R SF24 W BR R SF24 W BR G SF24 W R G DECODER IN SO HI RECEIVER MUTE...

Page 33: ...OLLOWER TONE AMPS Q5 Q6 Q7 Q8 Q9 R 4 5 T T 4 1 b 3 3 f j P328 TO TB2 4 m w 7 RECEIVER MU P329 TO TB2 2 V F G REG l o TO A426 F30 SF24 W I TONE REJECT H 4 I p 3 3 TB2 5 C TO X F L I 3 J3 1 p 3 3 4 2 B...

Page 34: ...I I A Q 7 1 4W I Q410 Q411 R 7 7 I TO S F 2 4 W R O GREEN I RC AMP QIO SQ CONTROL A ENCODE OUT FLI I NETWORK I 9 8 2 0 5 2 8 0 1 SCHEMATIC DIAGRAM 406 470 MHz RECEIVER MODELS 4ER42E10 33 4ER42GlO 33...

Page 35: ...CZ C3 C4 C5 C6 C7 C8 El and EZ L1 L2 L3 C2 C8 L2 Ql R1 RZ and R3 A413 and A414 C1 CZ c3 C4 C5 C6 C7 C8 C9 C1O Cil SYMBOL C12 and C13 C14 C15 L1 LZ L3 L4 Ql 92 R1 R2 R3 R4 R5 R6 R 7 T1 and TZ C2 C3 L1...

Page 36: ...RS Coil Includes tuning slug 5491798P5 S O C U T S Refer to Mechanical Parts RC 1823 CRYSTALS Yhen reordering give GE Part No and specify exact freq needed Crystal freq OF 12 4 M z t 24 Quartz freq ra...

Page 37: ...1 LZ L3 91 thru 96 9 7 9 8 99 qlo R1 RZ R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 GE PART NO 19A116080P5 19A116080P3 198209243Pl 19A116080P108 1911116080P107 198209243P106 5496267P6 19A116080P109 5496267P28 19...

Page 38: ...prague Type 150D Earller than REV A Polyester 0 22 pf lo 50 YDCW Silver mica 120 pf la 500 Y E W sim to EleetrO Motive Type DM 15 Polyester 0 033 pf 20 50 Y E W Deleted by REV A Tantalum 2 2 pf 210Z 2...

Page 39: ...ohms t15S DC r r s TERMINAL B O A R D S Miniature phen 1 terminal Miniature phen 6 terminals M i n l l t u r e phen 3 terminals CABLES Coaxial c a b l e 50 ohm approx 5 inches long lncludes 5441 19820...

Page 40: ...5 1 4 w Composition 10 000 ohms 558 114 w Composition 100 ohms lo 1 4 w Composition 10 000 ohms lo 114 w Composition 2700 ohme lo 1 2 w IUANSPORYERS COIL ASSEYBLY T1 19B20495081 T 2 19B20495062 CAPAC...

Page 41: ...A and earlier Composition 4300 ohms f5 114 w SCILLATOR HLILTIPLIER BOARD A432 19C311726C1 A433 19C311726G2 A434 19C311726G3 A435 19C311726W CAPACITORS Ceramic disc 001 pf lo 1000 WCW sim ta RUC Type...

Page 42: ...H P r l 19 3 ohm5 110 DC e s Sec 23 5 ohms lo DC res ENCODER DECODER 4EK16A10 CAPACITORS Polyester 0 22 vf 2205 50 vm Polyester 0 047 wf 5 50 YDCW Polyester 0 1 uf 25 50 YDCW SYMBOL R54 R55 R57 R58 R5...

Page 43: ...4ER42EIO 33 4ER42GIO 33 RC 1823A Changes i n t h e e c a R e v i s i o n L e t t t o t h e P a r t s L i s l CHANNEL GUARD EN Rev A To o b t a CHASSIS RF ASS1 Rev A To f a c i Changed Rev B To i n c...

Page 44: ...ARD ENCODER DECODER MODEL 4EK16A10 Rev A To o b t a i n c o r r e c t o u t p u t l e v e l Changed R8 CHASSIS RF ASSEMBLY 19E500881 G1 t h r u G4 Rev A To f a c i l i t a t e t u n i n g of low I F a...

Page 45: ...u e l c h o p e r a t i o n D e l e t e d C 2 4 C 2 8 C 2 9 C 4 2 C 4 3 R3 C49 C54 CR8 R75 R79 a n d RT3 C h a n g e d C 2 1 C 2 6 C 3 7 I R 4 2 4 8 5 3 a n d R 6 2 O u t l i n e D i a g r a m Was IF...

Page 46: ...426 AUDIO AMP AUDIO DRIVER Q7 I R37 3 8k Us 6 I I h I TO TO J 4 4 3 I 3 TO J443 ll J442 15 TO J 4 4 2 7 Y 2 O 0 W R BK GREEN FLTR SYSTEM NEG t l2V AF OUT 2 AF OUT I i PRODUCTION CHANGES 406 470 MHz MA...

Page 47: ...RF ASSEMBLY 19E500881 G2 and G4 REV H To improve band end t u n i n g Changed C6 and C8 REV J To remove u n n e c e s s a r y p r o t e c t i o n D e l e t e d CR1 CHASSIS RF ASSEMBLY 19E500881 G1 an...

Page 48: ...r e l y audible s q u e l c h s w i t c h i n g t r a n s i e n t s and to r e d u c e re c e i v e r s q u e l c h t a i l D e l e t e d C 3 8 C 4 9 CR7 CR8 R 6 2 R 7 5 and R76 A d d e d C 5 5 R 8 0...

Page 49: ...i m i n a t e s q u e l c h opening thump i n r e c e i v e r s w i t h Channel Guard Removed white orange wire between 5443 13 and TB2 1 Added a white orange wire be tween P312 on 517 o n I F a u d...

Page 50: ...component 2 D e s c r i p t i o n o f p a r t 3 Model number of equipment 4 R e v i s i o n l e t t e r stamped o n u n i t T h e s e i n s t r u c t i o n s d o n o t p u r p o r t t o c o v e r a l...

Page 51: ...L C J E MAINTENANCE MANUAL LBI 3999 MOBILE RADIO DEPARTMENT GENERAL ELECTRIC COMPANY 8 LYNCHWRG VIRGINIA 24602...

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