Hammarlund SP-600-JX, Handbook Overhaul Instruction

Page 1: ...6 45 223 HANDBOOK OVERHAUL INSTRUCTIONS RADIO RECEIVER MODEL SP 600 JX HAMMARlUND PUBLISHED UNDER AUTHORITY OF THE SECRETARY OF THE AIR FORCE AND THE CHIEF OF THE BUREAU OF AERONAUTICS L __ D Arcy Ptg...

Page 2: ...d by the cutrent revision is indicated by a vertical line in the outer margins of the page I The asterisk indicates pages revised added or deleted by the current revision A ADDITIONAL COPIES OF THIS P...

Page 3: ...y 15 9 3 Reassembly of the Chassis and Panel Assembly 16 9 4 Reassembly of the Radio Receiver 16 9 5 Reassembly of the RF Tuners 16 9 6 Testing 17 X FINAL ASSEMBLY 10 1 General 17 XI INSPECTION AND TE...

Page 4: ...AN 16 45 223 Figure 1 1 Radio Receiver Model SP 600 JX Rack Mountings ii...

Page 5: ...requires that certain auxiliary components be associated with the receiver Apart from the phone jack contained in the front panel of the receiver all the receiver inter connecting means are located on...

Page 6: ...ts to which the respective tools are applied when the re 1 Large pin 2 Line up bar 3 Small pin Figure 2 1 Special Tools to Reassemble RF Strip Assembly 2 ceiver is overhauled The manner of use and app...

Page 7: ...the failure of its as sociated isolating capacitor and then measure its resistance utilizing the volt ohmmeter If the latter turn the receiver off to measure the resistance of the resistor To measure...

Page 8: ...in dicating infinite resistance if the capacitor is good If the needle does not go back to infinite resistance indication the capacitor is leaky and should be replac ed This test is not reliable for...

Page 9: ...tJl Figure 4 1 Gear Train Assembly Exploded View e 1142 11 t4 I z I en I tJl I N N I CIJ m n o l...

Page 10: ...is switch assembly comprises the S5A 6 B C rotary switch three resistors five insulated electrical wires eight bare electrical wires and two pieces of vinylite tubing which cover in part two of the ba...

Page 11: ...5 6 and then blowing them out This applies to the r f trimmer capacitors even when as sembled to their isolantite bases with r f coils re sistors and all other fixed capacitors removed 5 9 RF COILS AN...

Page 12: ...dicator for the vernier dial all simultaneously indi cate zero dial indications when the four gang variable air condenser is fUlly meshed Note that the movable main dial frequency indicator pointer l...

Page 13: ...mb lies etc b Check the quality of each soldered joint and the location and manner of making each specific subas sembly ground connection c Check the tightness of staked terminals screws nuts clamps a...

Page 14: ...regard to looseness wear breaks or other damage making sure that the main capaci tor ball bearings and the trimmer capacitor rotor 10 spring assembly in each instance provide for smooth firm rotor an...

Page 15: ...nt and bfo in jection controls a Inspect the metallic parts of each control for dust dirt and evidence of corrosion Make sure that the unit has no mechanical defects such as loose ter minal lugs loose...

Page 16: ...ted to ex treme vibration extremes in temperature and or 12 humidity or exposed to dust dirt etc When the receiver is subjected to abnormal use or is dropped an evaluation of the abnormalities or dama...

Page 17: ...hem and the r f strip proper The isolantite base itself is then unsoldered by removing the solder from the two eye lets it contains and through means of which it is mounted to the r f strip The isolan...

Page 18: ...the mounting disc and shaft assembly 35 using three No 8 32 machine screws 40 and three split lock 14 washers 39 Also add the machine screw 42 it acting as the rear bearing for same Make sure the cur...

Page 19: ...als start from zero dial indication Add main dial pointer to movable bracket 15 with the pointer set to the main dial first frequency mark line 8 3 RESOLDERING AND RETROPICALIZATION The reassembly of...

Page 20: ...nd audio gain knobs to the appropriate control shaft of each and tighten the set screws contained in each e Assemble the small eccentric the large eccen tric and tie rod which together provide the dri...

Page 21: ...comprises the final reassembly of the complete equipment SECTION XI INSPECTION AND TESTING 11 1 GENERAL The radio receiver comprising the complete equipment is aligned inspected and tested with regard...

Page 22: ...ical 12 mechanical parts 7 minimum 17 overall 7 Preservation preservation 7 gear train 7 Corrosion 8 main gang 7 r f coils chokes 7 D trimmers 7 Dismantling R chassis 6 gear train 6 Reassembly tuning...