Heathkit-GC-1005-Manual 电路图 维修手册.pdf

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1、MEGC-1005 Electronic Clock H EATH KIT Copyright C 1972 Heath Company All rights reserved PRICE $2.00 1-595-1500-03 RadioFans.CN 收音机爱 好者资料库 I 71) NNW Sincerely, HEATH COMPANY Benton Harbor, Michigan 49022 11111 ?1111111 I I ?I O Dear Customer: The Heathkit electronic product you have purchased is one

2、 of the best performing electronic products in the world. Heres how we aim to keep it that way: Your Heathkit Warranty During your first 90 days of ownership, any parts which we find are defective, either in materials or workmanship, will be replaced or repaired free of charge. And well pay shipping

3、 charges to get those parts to you anywhere in the world. If we determine a defective part has caused your Heathkit electronic product to need other repair, through no fault of yours, we will service it free at the factory, at any retail Heathkit Electronic Center, or through any of our authorized o

4、verseas distributors. This protection is exclusively yours as the original purchaser. Naturally, it doesnt cover damage by use of acid-core solder, incorrect assembly, misuse, fire, flood or acts of God. But, it does insure the performance of your Heathkit electronic product anywhere in the world fo

5、r most any other reason. After-Warranty Service What happens after warranty? We wont let you down. If your Heathkit electronic product needs repairs or you need a part, just write or call the factory, your nearest retail Heathkit Electronic Center, or any Heath a,uthorized overseas distributor. We m

6、aintain an inventory of replacement parts for each Heathkit model at most locations even for many models that no longer appear in our current product line-up. Repair service and technical consultation are available through all locations. tNe hope youll never need our repair or replacement services,

7、but its nice to know youre protected anyway and that cheerful help is nearby. RadioFans.CN 收音机爱 好者资料库 5 15 16 17 Assembly and Operation of the ELECTRONIC CLOCK MODEL GC-1005 TABLE OF CONTENTS Introduction ? Parts List ? Assembly Notes ? Step-by-Step Assembly ? Cabinet Top ? Cabinet Bottom ? Alternat

8、e Line Voltage Wiring Other Wiring ? 17 Decorating ? 20 Initial Tests 21 Operation ? 22 In Case of Difficulty 23 Troubleshooting Chart ? 24 Specifications 25 Circuit Fundamentals ? 26 Chassis Photograph ? ? 27 Circuit Board X-Ray Views ? 28 Circuit Board Voltage Charts 30 Identification Chart ? 31 S

9、chematic. .(fold-out from page) ? 31 Warranty ? Inside front cover Customer Service ? Inside rear cover HEATH COMPANY BENTON HARBOR, MICHIGAN 490 2 2 RadioFans.CN 收音机爱 好者资料库 Page 2 INTRODUCTION The Heathkit Model GC-1005 digital Electronic Clock has many attractive features, including: a wiring opti

10、on that lets it display either 12-hour or 24-hour time; an AM-PM alarm with snooze alarm; a 6-digit, easy-to-read display; a power interruption indication; a 50 or 60 Hz wiring option; and a 120-volt or 240-volt wiring option. The heart of the Clock is an MOS/LSI* integrated circuit that performs al

11、l the logic functions of keeping time. A simple wiring option lets your Clock display either 12-hour or 24-hour time. The clock knows the difference between AM and PM and will only sound the alarm for the one time (either AM or PM, but not both) in 24 hours that you desire. The snooze alarm waits ap

12、proximately seven minutes each time it is reset, until it sounds again. The readout tubes clearly display the time on a sloped surface, and the 6-digit display shows all 8s if there is a significant power line interruption. The Clock can be wired to operate from either a 50 Hz or a 60 Hz power line,

13、 or 120 volts or 240 volts AC. Attractive, modern styling; small size; and solid-state dependability make this Clock ideally suited for your office, your home, or almost anywhere. Refer to the Kit Builders Guide for complete information on unpacking, parts identification, tools, wiring, soldering, a

14、nd step-by-step assembly procedures. *MOS/LSI (Metal Oxide Semiconductor/Large Scale Integration) PARTS LIST 27 kS2 (red-violet- ?.10 orange) 82 k the letters may vary.) 3. Part number and type number. 4. Part number with a type number other than the one listed. TRANSISTORS-INTEGRATED CIRCUIT B4 60-

15、1 0 -I-, SPST switch .20 60-6 3 SPST switch with spring return .30 B5 60-2 2N DPDT switch .30 B6 75-52 t 6, Switch insulator .10 B7 75-103 1/ Fish paper, 5-1/2 x 1-7/8 .10 B8 75-93 Fish paper, 1 x 1 .10 B9 75-138 - 4N Rubber foot .10 ? B2 417-811 ?t ? B2 417-295 ? 6, B2 417-801 (2 gi ? B3 443-601 ?N

16、 89-44 ?1N ?Line cord ? .55 *DuPont Registered Trademark KEY PART No. No. Cord-Wire-Cable (contd.) 340-11 344-50 1v 1 347-55 )/ HARDWARE Cl 250-420 7.: C2 250-52 3. C3 252-2 C4 254-9 C5 250-276 12- C6 250-381 250-89 C7 250-1156 4, C8 252-3 C9 253-60 2- C10 254-1 C11 259-1 6- 54-820 N 1 El 204-1876 2

17、 6 E2 205-141 ?2 7 E3 258-167 ?2 E4 346-6 ?i 1 E5 ?401-163 -v 1 E6 411-286 .N3 E7 412-11 1 E8 421-40 E9 431-43 Nv 1 El0 432-134 156 El 1 432-144 24 7 E12 432-199 PRICE Each Bare wire (used only ?.05/ft for soldering iron tip) Black wire ?.05/ft 8-wire cable ?.25/ft 2-32 x 1/4 self-tapping ?.05 screw

18、 4-40 x 1/4 screw ?.05 4-40 nut ? .05 #4 lockwasher ? .05 6-32 x 3/8 flat ? .05 head screw 6-32 x 3/8 black screw .05 6-32 x 3/8 screw ?.05 6-20 x 2-1 /4 self- ?.10 tapping screw 6-32 nut ?.05 #6 flat washer ?.05 #6 lockwasher ?.05 #6 solder lug ?.05 Power transformer Angle bracket Tool plate Speake

19、r clamp Sleeving Speaker Display tube Neon lamp 3/16-ampere slow-blow fuse Terminal strip Connector pin Integrated circuit (IC) connector Wire nut MPS-L01 transistor ?.40 MPS-L51 transistor ?.50 MPS-A20 transistor ?.20 MK5017AA integrated ?15.00 circuit PARTS ?DESCRIPTION Per Kit 1.65 .85 1.20 1.10

20、.10 .10 .15 .40 4.60 .15 .10 .05 .05 1.40 5.00 .20 .40 .10 .10 .01 .10 LARGE BARE WI RE CUT TO CHI SEL SHAPE Page 4 KEY PART ?PARTS DESCRIPTION ?PRICE The ?prices ?apply ?only ?on ?purchases ?from ?the ? Heath No. ?No. ?Per Kit Each Company where shipment is to a U.S.A. destination. Add 10% (minimum

21、 25 cents) to the price when ordering from a Miscellaneous (contd.) E13 ?446-609 ? 1 Window 1.20 Heathkit Electronic Center to cover local sales tax, postage, and ?handling. ?Outside ?the ?U.S.A., ? parts and service are 490-5 Nut starter .10 available from your local Heathkit source and will reflec

22、t 597-260 ?*1 Parts Order Form additional ?transportation, ?taxes, ?duties, ? and ?rates ?of 597-308 ?1N- Kit Builders Guide exchange. Manual (See front cover for part number.) 2.00 Solder (Additional 6 rolls of solder, #331-13, can be ordered for 25 cents each.) ASSEMBLY NOTES 1. Before you start t

23、o assemble this kit, read the wiring, soldering, and step-by-step assembly information in the Kit Builders Guide. 2. Due to the small foil area around the circuit board holes and the small areas between foils, it will be necessary to use the utmost care to prevent solder bridges between adjacent foi

24、l areas. Use only a minimum amount of solder and use no larger than a 25N-watt soldering iron with a small tip. Allow it to reach operating temperature, and then apply it only long enough to make a good solder connection. 3. If a small wattage, small-tip soldering iron is not available, proceed as f

25、ollows: Be sure your soldering iron is cool. Wrap the large bare wire (supplied) tightly around the soldering iron tip as shown in Figure 1. Allow approximately 1/4 of wire to extend beyond the end of the soldering iron. Cut the wire end to a SOLDERING IRON TIP Figure 1 chisel shape as shown. Occasi

26、onally apply solder to the turns of large bare wire to achieve a good heat transfer. 4. Resistors will be called out by their resistance value in 52, kn, or MS2, and color code. 5. Capacitors will be called out by their capacitance value (in pF or auF) and type (disc, mica, Mylar, or electrolytic).

27、START W STEP-BY-STEP ASSEMBLY 4 I 3 341/ 1/4 0 /2 1 1. 1 1 5 ?6 1 1 ?2 Page 5 Position the display circuit board as shown in Pictorial 1-1. Then complete each step on the Pictorial. NOTE: ?In ?the ?following ?steps, ?use 1/4-watt ?resistors ?(the ?smaller ?resistors) unless directed otherwise. (-) ?

28、180 kn (brown-gray-yellow). (-) ?27 kfl (red-violet-orange). 1 ?91 Ica 5% (white-brown-orange). N Y 1 ?180 kS2 (brown-gray-yellow). SAFETY WARNING: Avoid eye injury when you clip off excess leads. We suggest that you wear glasses, or at least clip the leads so the ends will not fly toward your eyes.

29、 (s- 1 ?Solder the leads to the foil and cut off ?the ?excess ?lead ?lengths. ?Save these ?excess ?lead ?lengths for the next four steps. NOTE: In the following four steps, use cut off resistor leads as shown. Solder each lead as it is installed. lc, -r, ) ?3/4 resistor lead at K. See the inset . dr

30、awing. N) ?3/4 resistcr lead at L. N) ?3/4 resistor lead at N. N, 1 ?3/4 resistor lead at P. ( ?) ?Make ?sure ?the ?fdur ?previously installed wires are still down against the circuit board and did not move during soldering. (V) ?180 kn (brown-gray-yellow). (L) ?82 kft (gray-red-orange). t= ) ?27 ks

31、-2 (red-violet-orange). (k ) ?100 Id2 (brown-black-yellow). ( ?1 ?27 ks2 (red-violet-orange). (1/44) ?Solder the leads to the foil and cut off the excess lead lengths. CONTINUE t.-) ?180 Id2 (brown-gray-yellow). *1 1 ?27 ?Id2 ?(red-violet-orange). *t. ( ?) ?91 kft, 5% (white-brown-orange). (1 ?27 ks

32、-2 (red-violet-orange). ( 1 ?100 Id2 (brown-black-yellow). ( ) ?470 ?kf2, ?1/2-watt ?(yellow-violet- yellow). NO ?Solder the leads to the foil and cut off the excess lead lengths. 1-J) ?470 ?kft, ?1/2-watt ?(yellow-violet- yellow). AO ?470 ?ka ?1/2-watt ?(yellow-violet- yellow). 14:0 ?470 ?kfl, ?1/2

33、-watt ?(yellow-violet- yellow). N) ?470 ?162, ?1/2-watt ?(yellow-violet- yellow). ti ) ?470 ?kn, ?1/2-watt ?(yellow-violet- yellow). ?Be sure the leads of this resistor ?do ?not ?touch ?any ?other resistor leads. *Nif 1 ?Solder the leads to the foil and cut off the excess lead lengths. i,./1 ?180 kS

34、2 (brown-gray-yellow). J., 1 ?180 kit (brown-gray-yellow). ) ?180 ks2 (brown-gray-yellow). 11 ? Solder the leads to the foil and cut off the excess lead lengths. PICTORIAL 1-1 FOR GOOD SOLDERED CONNECTIONS. YOU MUST KEEP THE SOLDERING IRON TIP CLEAN WIPE IT OFTEN WITH A DAMP SPONGE OR CLOTH. PART NU

35、MBER PARTS PICTORI . ?. eivrerreqPeo.4 NOTE: HEATH PART NUMBERS ARE STAMPED ON MOST DIODES. F3) Ca) 0 .7.7.1 Jl 5/-1 ?55 ARTS PICTORIAL 13 ?i-zac_r-ri 4 Page 6 START -441- NOTES: 1. Use the plastic nut starter supplied with this kit to hold and start 6-32 and 4-40 nuts on screws. 2. You will install

36、 two angle brackets on ?this circuit ?board. ?Do ?not be concerned ?if ?the ?brackets ?touch nearby foils. ( ?) ?Angle bracket. ?Use a 4-40 x ?1/4 screw, a #4 lockwasher, and a 4.40 nut. 4-40 x 1/4 ?SCREW BAND OR BANDS (I) ?Eight 1N4149 diodes (#56-56). IV) ? 1 N2071 diode (#57-27) at D201. Solder t

37、he leads to the foil and cut _ ?off the excess lead lengths. CONTINUE .).-) 15 kSl, 5% (brown-green-orange). 1 27 kS2 (red-violet-orange). 4M1- ) 8200 E2, 5% (gray-red-red). -1=- ) ? 56 kE2 (green-blue-orange). N) 120 kE2,X, (brown-red-yellow). t 1 56 kE2 (green-blue-orange). ( ) 12 k2, 5% (brown-re

38、d-orange). ) Solder the leads to the foil and ct off the excess lead lengths. s) 8200 E2, 5% (gray-red-red). 1 N4002 diode (#57-65) at D203. (,-) 1 N4002 diode (#57-65) at D202. 1N4166A zener diode (#56-25) 2D201. ( ) 220 ft (red-red-brown). ) Solder the leads to the foil and cL off the excess lead

39、lengths. PICTORIAL 2-2 Page 9 START AP START ,(v) ?Six ?MPS- (#417-295). transistor, solder and cut off i L51 ?transistors As ?you ?install ?each the leads to the foil the excess lead lengths. FLAT Nt- ) ?Six ?MPS-A20 ?transistors (#417-801). NOTE: When you install . disc, mica, or Mylar capacitors,

40、 remove any excess coat- ing from the leads. Use long-nose pliers to remove the coating. REMOVE COATING ?-fn.- EVEN WITH ?W% . BOTTOM OF CAPACITOR BODY ?1 Six .001 ,uF disc capacitors. Nsir ?1 ?Solder the leads to the foil and cut off the excess lead lengths. Assemble tht two tool plates to- gether

41、as shown. Use a 6-32 x 3/8 screw, two #6 Iockwashers, and a 6-32 nut. TOOL PLATE o-32 x 3/8 SCREW #6 LOCKWASHER ) NOTE: In the following steps you will prepare and install the IC con- nectors. Read and follow the in- structions very closely. Ilq ) Cut two (2) strips of twelve (12) IC connectors. CON

42、NECTOR STRIP i I , eoglo vv ?v, , v o 00000,000001 o01 ._ 12 CONNECTORS CONTINUE PICTORIAL 2-4 CONTINUE ) 30 pF mica. ) MPS-A20 transistor (#417-801) at Q214. 11,6111116! 0 0 0 0 MPS-A20 transistor (#417-801) at Q213. 67/7.77) .022 uF Mylar. 1 Solder the leads to the foil and cut off the excess lead

43、 lengths. A L 2-3 IMPORTANT: On the next page, use the following method to install the two IC connector strips. Position the connector strips as shown. ?CONNECTING BAND CONNECTING BAND CONNECTOR STRIP CONNECTOR STRIP MOUNTING LOCATION Be sure the strips are perpendicular to the circuit board. Then t

44、urn the board over and solder the connec- tors to the foil. The steps performed in this Pictorial are in this area of the circuit board. PART NUMBER IDENTIF (CATION DRAWING AX CONTINUE 3 gray wire at hole AJ. The free end will be connected later. ?V 1 3 green wire from hole AU to hole AK. 5 violet w

45、ire at hole U. The free end will be connected later. N) Connector pin at hole T. ( ) Connector pin at hole Y. 0 0 0 BX ? A Z ,g) 0 AN 1 Connector pin at hole Z. t-.4) Connector pin at hole X. 1 Solder the pins to the foil. Also, bi sure the wires are soldered and th, excess ends cut off. ) Compare t

46、he foil area with th N X-Ray View (on Page 29) to be sur there are no solder bridges. PICTORIAL 2-5 ? AK ? 1-0 ?F- 6 (-) M 0 CB Page 10 START AP ici Two strips of twelve connectors. ? N NI-) ?Use ?the ?assembled tool ?plates to remove the connecting bands. First bend each band inward, and then outwa

47、rd, as shown (several times if necessary). Do not bend the connec- tors. TOOL PLATES BANDS 6L /J ,. i 1 ?1 ?I ? BEND ? 1 ?HERE IC CONNECTORS ( ?) Cut a 5-1/2 length of 8-wire cable and separate the cable into eight individual wires. You will use these wires in the following steps. -_ 1 - ?SEPARATE ?

48、f= 8- WIRE CABLE NOTE: In the following steps, when a wire is called for, cut the wire to the indicated length, remove 1/4 of insulation from the wire_ends, twist the strands together, and apply a small amount of solder to the bare ends. Solder each wire as it is installed and cut off the excess bare wire ends. 4- i ) 2-5/8 brown wire. ? , /) 2-3/8 red wire. NIV ?1 2-7/8 orange wire. -411 5-1/4 yellow wire from hole AX to hole BX. Route it as shown. tst-1 ) 2-1/2 red wire from hole M to hole AN.