Heathkit SW-717 Assembly Download Page 48 | Manualshive

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Heathkit SW-717 Assembly Download Page 48

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Summary of Contents for SW-717

Page 1: ...ASSEMBLY MANUAL EF Copyrighr O 1971 Heath Company 1ll tigltt t tthtd 595 1 293 04 j lttrtE O GUtp f ...

Page 2: ...Assembly and of the SHORTWAVE MODEL SW 717 O pe ratio n RECEIVER HEATH COMPANY BENTON HARBOR MICHIGAN 49O22 ...

Page 3: ...Chassis Top Assembly Front Panel Mounting INITIAL TESTS ALIGNMENT FINAL ASSEMBLY INSTALLATION 51 OPERATION 53 IN CASE OF DIFFICULTY Troubleshooting Chart 55 56 59 61 63 63 65 5 7 67 15 17 18 22 24 26 36 36 40 43 45 49 SPECIF ICATIONS CIRCUIT DESCRIPTION CHASSIS PHOTOGRAPHS SCHEMATIC fold outfrom page CIRCUIT BOARD X RAY VIEW RESISTANCE CHART VOLTAGE CHART 68 WARRANTY lnside Front Cover CUSTOMER SE...

Page 4: ...so a built in rod antenna for the broadcast band and provisions for connecting an external antenna for shortwave reception Solid state circuitry is used throughout Most of the components are mounted on a printed circuit board both for ease of assembly and for reliability The built in power suppfy is transformer operated from either 120 Vac or 24O Vac and uses four silicon diodes in a full wave bri...

Page 5: ...the Reolacement Parts inside the rear cover of the Manual KEY PART PARTS No No Per Kit PRICE Each DESCRIPTION 2 15 2 7 sl 5 red violet sotd 1 15 22 O red red black 4 15 100 Q brown black brown 1 15 470 O Yellow violet brown 2 15 680 O blue gray brown 2 15 1000 O brown black red 2 15 27OO Q red violet red 2 15 3300 O orange orange red 1 15 6800 Q blue gray red 2 15 10 kO brown black orange KEY No P...

Page 6: ...bistor GE STB 620 13 404 399 3 60 Ceramic filter TRANSISTORS NOTE Transistors are marked for identification in one of the following four ways 1 Part number 2 Transistor type number 3 Part number and transistor type num ber 4 Part number with a transistor type number other than the one listed 417 91 2 85 2N5232A 417 224 1 1 40 MPSUOs 417 225 1 1 60 MPSUss 417 118 1 40 2N3393 417 169 1 1 50 MPF 1 05...

Page 7: ... pF is equal to 1 000 0O0 pF Before you install a disc capacitor remove from its leads any excess body coating material which would protrude through the circuit board and prevent soldering the leads to the foil Be very careful not to cover unused holes with solder or bridge solder between foils during the assembly of the circuit board Use a soldering iron that is rated at 15 to 25 watts lts tip sh...

Page 8: ...START IDENTIFICATION DRAWING CONTINUE PICTORIAL 1 ...

Page 9: ...r I T I coNTTNUE I PART NUMBER IDENTIFICATION DRAWING START PICTORIAL 2 ...

Page 10: ...r n to CONTINUE PART NUMBER IDENTIFICATION DRAWI NG START PICTORIAL 3 ...

Page 11: ...START PICTORIAL 4 ...

Page 12: ...CIRCU IT BOARD PARTS PICTORIAL o F 9 M l l Mpk yy ffi h h li iil w ffi I I I I t EA _ I ...

Page 13: ...PART NUMBER IDENTIFICATION DRAWING START CONT INUE PICTORIAL 6 ...

Page 14: ...START tun to IDENTIFiCATION DRAWING CONTINUE H g PICTORIAL 7 FINISH ...

Page 15: ... brown diode 2N3393 transistor SPST slide 3 position rotary 4 position 2 wafer rotary 1 4 grommet 3 8 grommet 3 1 6 grommet White vinyl gsket adhesive 5 x 314 1 Strain relief Nylon insert Front panel Cable clamp Large plastic foot Small plastic foot Alignment tool 15 15 SWITCHES A13 60 1 A14 63 190 A15 63 587 4 30 2 40 2 44 1 1 1 A4 25 157 1 85 2O pF 10 trtF 15 volts 1000 1000 ptF 25 volts dual se...

Page 16: ...ART PARTS PRICE DESCRIPTION No No Per Kit Each 6 Hardware F1 250 208 F2 250 162 F3 250 89 F4 250 381 F5 250 569 F6 250 365 F7 250 8 F8 250 298 F9 252 3 F 10 252 22 F 1 1 252 118 F12 254 6 F13 259 1 Other Hardware G1 250 16 G2 250 22 G3 252 7 G4 253 10 G5 253 11 G6 254 5 G7 255 2 G8 255 3 G9 255 63 Gl0 259 10 Gll 259 24 G12 432 66 H1 40 1089 H2 54 96 24 74 29 75 90 H3 203 779 3 390 362 40 t 148 407...

Page 17: ... see the actual positions of wires anfl components Lockwashers and nuts will be used with most screws when mounting parts unless the assembly steps state otherwise Consequently the applicable steps will call out only the size and type of hardware used For example the phrase Use 6 32 x 114 hardware means to use 6 32 x 114 scre s one or more 6 lockwashers and 6 32 nuts Refer to the Details for the p...

Page 18: ...d the front chassis ap in as shown in the Pictorial Mount ti ie 5 9 pF variable capacitor at G on the front chassis apron Use 6 32 x 3 8 screws through grornmets AX and AY Tighten cnly until the screw heads are snug against the grommets Make sure that no part of this capacitor touches the chassis Detail 8B NOTE A plastic nut starter has been provided with this kit Use it to hold and start nuts on ...

Page 19: ...ion the switch lugs toward the corner of the chassis as shown 6 SOLDER LUG 6 32 x 318 SCREW DetailSF Refer to Detail 8F and mount the 2 lug screw type terminal strip on the outside of the rear chassis apron at X Use 6 32 x 3 8 hardware with a 6 solder lug on one screw as shown Point the solder lug toward the center of the chassis as shown in the Pictorial 6 2 x 318 SCREW m lI i L sci d i r J i g D...

Page 20: ...unting lugs about l 8 of a complete turn 2 r14 B LK 2 314 8LK GRN i TWIST MOUNTING LUGS 1 8 TURN Detail 8J Refer to Detail 8J and cut the leads of the power transformer to the lengths shown Measure from the point where the leads leave the transformer windings Then remove 1 14 of insulation from the end of each lead lf it has not been done prwiously twist the fine strands of each transformer lead a...

Page 21: ...of a diode to lug 5 NS and the other lead to lug 2 NS Route the green and green yellow wires from the transformer as shown in Detail 8M and connect them to the 5 lug terminal strip as follows Green yellow to lug 1 NS Longer green to lug 2 NS Shorter green to lug 4 NS Connect one end ol a 3 1 14 yellow hookup wire to lug 5 of the terminal strip S 3 The other end of this wire will be connected later...

Page 22: ...e pre wired S lug teifi nal strip at AL Be sure to position th66 ounting foot of each terminal strip as shown Use lockwashers under each transformer mounting foot as shown Insert the ends of both green twisted pairs through grommet AM and pull the pairs up through the grommet to the top of the chassis Do not pull the pairs so tight that there is any strain on the connections to the terminal strip ...

Page 23: ...anel at F Use a control nut Place an E ring washer in the shaft groove near the shaft end Then place the shaft in the bushing so that the other groove is visible at the front of the bushing Place an E ring washer in this groove Refer to Detail 9E and use long nose pliers to compress the two skirts on a nylon insert Then press the insert into the opening at BP in the subpanel until the round portio...

Page 24: ...IICh CONTROL SOLDER LUG a oSOLDER AND CUT OFF TXCESS TENGTH OF CONIROL SOTDER LUG THEN RtM0Vt NUT rft i vt Detail 11A Refer to Detail 11A and mount the control solder lug on the 10 kQ control with switch 1 9 95 Align the control solder lug with lug 1 of the control and retain it in position with a control nut Form the control solder lug so it touches lug i of the control S 1 as shown in Detail 11A...

Page 25: ... a 318 long spacer and a 6 x 314 self tapping screw at AC and at AE Be sure to position the red lead of the antenna toward hole AD in the rear panel as shown in the Pictorial Do not overtighten these screws lnstaf l 6 x 114 sheet metal screws through the rear panel into the rear chassis apron at AA and AB Bring the white antenna lead over to the point where the red lead leaves the antenna rod Then...

Page 26: ...l F l 3i ix l I l fcrilr ssls T5Tl N Pa h h lt t i l k t w i 5Q o oml x W FUST REPLACEMENT LABEL a I t 3 U o f I U o 0 r z ts t o z I F c PICTORIAL 8 ...

Page 27: ...ead at BE At BD place a 8 plain solder lug on the screw instead of a lockwasher Then raise the circuit board into place and secure the screws with lockwashers and nuts Do not place nuts or lockwashers on the screws at BF or BS Tighten the nuts f inger tight onlY Install a 6 lug terminal strip on circuit board mounting screw BF Position the mounting foot as shown Note the lockwashers used Place a 6...

Page 28: ...g 4 S 1 and the other wire to lug 5 S 1 of control B At the other end of the twisted pair connect one wire to lug 1 NS and the other wire to lug 2 NS of terminal strip AK Route these wires as shown NOTE When a wire passes through a connection and then goes to another point as in the next step it will count as two wires in the solder instructions one entering and one leaving the connection frk Y De...

Page 29: ...kup wire from lug 4 S 3 to lug 6 NS of terminal strip BF Connect a 1 1 12 blue hookup wire from L on the circuit board S 1 to lug 1 of terminal strip BF NS Connect a 2 blue hookup wire from lug 1 of terminal strip BF S 3 to lug 2 of capacitor AS NS Connect a 1 314 blue hookup wire from lug 5 of terminal strip BF NS to lug 1 of capacitor AS NS Connect a 3 blue hookup wire from lug 5 of terminal str...

Page 30: ...nt chassis apron in the position shown Use a control flat washer a control lockwasher and a control nut Before you install the switch position the hookup wire from wafer 1 so its free end will be over the circuit board Be sure to position the spacers between lugs 1 1 and 12 at the one o clock Position CAUTION When you solder wires to the switch wafers in the following steps be sure you do not use ...

Page 31: ...f switch C NS and through lug 11R S 2 to lug 11F NS of switch wafer 1 The other end of this wire will be connected later Refer to Pictorial 18 for the following steps Prepare the following lengths of yellow hookup wire 1 114 2 a 3 112 3 114 Wire the lugs on therear of wafer 1 of switch C as follows Connect the yellow hookup wire coming from lug 21 to hole Z on the circuit board S 1 Connect rhe 1 1...

Page 32: ... A t_ U q l N otE irX r 1 w ffi r r I I PICTORIAL 18 i ...

Page 33: ...circuit board S 1 Position the wire between the switch and the chassis The free end will be connected later Wire the lugs on the front of wafer 2 of switch C as follows Connect a 2 1 14 hookup wire from lug 1 S 1 to hole Y on the circuit board S 1 Connect the 1 1 12 hookup wire from lug 3 S 1 to the remaining hole in foil S on the circuit board S 1 Connect a 2 1 14 hookup wire from lug 5 S 1 to th...

Page 34: ...ite hookup wire and a 24 blue hookup wire Then form a twisted pair from these two wires At one end only of the twisted pair cut off and discard 2 of white wire Remove 114 of insulation from the cut end Pass this end of the twisted pair under the metal braid coming from terminal strip X Then connect the white wire to hole A S 1 and the blue wire to hole O S 1 on the circuit board VERY THIN CUT THE ...

Page 35: ...grommet AZ Refer to Detail 21B for the following steps Separate the line cord conductors for a distance no greater than 4 ff not already done remove 114 of insulation from the end of each conductor and melt a small amount of solder on each Place the strain relief on the line cord 6 from the end Insert the free end of the line cord into hole U from the outside of the chassis Use pliers to compress ...

Page 36: ...1D and connect the wires coming from the transformer to terminal strip AK as follows Black to lug 6 S 2 Black red to lug 1 S 2 Black green to lug 4 NS Black yellow to lug 4 S 21 i CHASSIS TOP ASSEMBLY Refer to Pictorial 22 fold out from Page 39 for the following steps Open the plates of the tuning capacitor by rotating its shaft pul ley String the 36 dial cord on the tuning capacitor pulley String...

Page 37: ...u will put the piece of waxed backing paper on top of the label and then rub on it instead of directly on the label q1 o J f 11 cur orl DIAL POINTER POSITION THE DIAL CORD BETWEEN THE THREE TABS AS SHOWN BEND THE OIJTTR TAES IOWARD THE PANIL TO LOCKTHE DIAL POINTER AND CORD IN POSITION Detail224 Refer to Detail 22A for the following steps Cut the main tuning pointer to a length of 2 318 Place the ...

Page 38: ...es of the circuit board and secure it at BD by wrapping the plain solder lug around the wires At the end of the twisted pair connect either wire to one lug on pilot lamp socket H S 1 and the remaining wire to the other lug S 1 Shorten the white antenna lead coming from hole AD in the rear panel until itis 114 shorter than the red antenna lead Then remove 114 of insulation from the end of the lead ...

Page 39: ...the end loops of the bandspread tuning spring to the two dial cord tabs Turn the shaft of the bandspread tuning capacitor through its range with your f ingers The two dial cord tabs should just touch R and S at each end of the range lf necessary loosen the setscrew in the pulley and rotate the pulley to adjust the travel of the dial cord tabs Refer to Detail 24B and install the bandspread tuning p...

Page 40: ... part of the panel holes 3 tii DISCARD THIS PIICE U5I THIS PIECE rl Detail2SC Refer to Detail 25D for the next two steps Remove the protective covering from one side only of the 2 x 1 12 vinvl gasket cut in the preceding step Refer to Detail 258 remove the protective coating from one side only of the 1 length of double adhesive tape laid aside earlier and press this side against the front of the m...

Page 41: ...116 setscrew into each of the large knobs as shown In the same manner start an 8 32 x 3 16 setscrew into each of the four small knobs Refer to Detail 25E and mount four small knobs with the index marks positioned as shown Tighten the setscrews Refer to Detail 25F for the next two steps C ut the leads of a 1N191 l 56 26 brown white brown diode to 3 8 Connect the lead at the banded end of the diode ...

Page 42: ... x 3l8 sheet metal screws q SMALL PLASIIC FOOT e w Install the two small plastic feet at BK and BN Use 6 x 318 sheet metal screws Refer to Detail 25H and mount a Speed Nut in each of the four slots in the bottom plate Note that the curved portion of each Speed Nut enters the slot with the straight portion against the outside of the bottom plate lip See the inset drawing Visually check all connecti...

Page 43: ...porarily push the two connectors on the black and white twisted pair onto the two speaker lugs Position the knob index marks according to Detail 25E Place the ANL switch on the rear panel at OFF Set your voltmeter to the proper range to read 15 volts Connect the voltmeter common lead to the chassis Connect the positive lead to lug 1 of terminal strip BF Insert the line cord into the electric outle...

Page 44: ... mount the prepared bottom plate on the bottom of the chassis Use a 6 32x318 screw and 6 lockwasher at BH and use 6 x 114 sheet metal screws at the other 7 holes 6 x I 4 g SHEET METAL Y SCREWS 1 g 3Li m LocrwnsHtn PICTORIAL 26 A I I J ...

Page 45: ...ade approximately 118 wide into hole AW in the rear panel and into the R25 control on the circuit board Turn the control fully clockwise as viewed from the front panel The signal meter lnset drawing 2 should deflect to the right This indicates the meter circuit is working r IDATHI IT Push the connections on the black and white twisted pair onto the two loudspeaker connecting lugs Tune the Receiver...

Page 46: ...t 11 MHz ALIGNMENT CHART Refer to Figure 2 and identify L4 and L7 Then use the alignment tool and adjust L4 for the loudest signal highest VTVM reading lf you do not hear the signal generator at the first setting tune the Receiver to each side of the 11 MHz setting and find the generator signal Then turn the coil core in the direction which will move the signal to the 11 MHz position on the tuning...

Page 47: ...receiver on at least one frequency in each of bands B C and D Shortwave broadcast stations may be used for calibration when their frequencies are known Your local library probably has a copy of World Radio TV Handbook or a similar publication which lists station frequencies This handbook is available from the Heath Company as Model GDP 315 The Alignment Chart on Page 46 tells you which coils and c...

Page 48: ...GRILLE PICTORIAL 27 ...

Page 49: ...protective covering from one side of a piece of the vinyl gasket Then apply this adhesive side diagonally across a corner of the front side of the speaker frame Press it firmly into place Similarly apply the other three pieces of vinyl gasket to the other three corners of the soeaker Use scissors to trim off that portion of the gasket material extending beyond the speaker frame Remove the protecti...

Page 50: ...wo connectors on the black and white twisted pair onto the two speaker lugs Place the cover down over the chassis and panel assembly Secure the cover with 6 32 x 3 g blacx screws ar holes CA CB CC and CD Insert 6 x3l4 black screws into holes CE and CF in the top of the cover NOTE This completes the assernbly of the Receiver Turn to the lnstallation section t6R 4 ANn_ xkud ...

Page 51: ...r the antenna the better the reception A tree or pole may be used as one support and your houseas the other support Insulators must be used at each end of the antenna to separate the antenna wire from the support wire The GND terminal on the rear of the Receiver should be grounded to a water pipe or to a 6 or 8 foot long ground rod driven into the earth OIPOLE ANTENNA 50 TO IOO LEAD _IN TO ANTENNA...

Page 52: ...ming signals from each other when they are near the same frequency This capacitor is normally left in the 0 position as its position affects the main dial calibration AM OPERATION The BFO control should be in the fully counterclockwise position Turn the MODE switch to AM and advance the VOLUME control for sufficient volume Set the BAND switch to the desired band and tune in a station with the MAIN...

Page 53: ...UIDE BAND FREOUENCY TIME ZONE Marine and Weather Local Amateur Latin America and Europe Europe Eu rope United States Amateur Asia and Australia Europe and Africa Europe and Latin America Asia and Australia Latin America United States Foreign Amateur Europe and North America North and Latin America Eu rope United States South America Europe United States South America Local Citizen s Band Europe Ce...

Page 54: ... been wired into the circuit as shown in the pictorial diagrams and as called out in the wiring instructions 5 Check for bits of solder wire ends or other foreign matter which may be lodged in the wiring 6 Check to make sure there are no solder bridges on the circuit board These are caused by solder which has flowed unintentionally from one foil to another causing an improper connection To remove ...

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