MALFUNCTION | PROBABLE CAUSE | REMEDY |
Locked lens can be rotated slightly positioning incorrect brightline frames. | Worn slot in lens mounting flange | Replace lens mounting flange |
Lens seats roughly or loosely in lens mounting flange. | Worn or damaged flange ring (23) fig. 39 Worn or damaged spring ring (25) fig. 39 | Replace flange ring Replace spring ring |
Light leaks on film. | Loose or missing eyelets (43) fig. 39 Hole in shutter curtains Deformed shutter curtains Damaged or missing light shields. Defective or misadjusted shutter brake Defective guide spring (14) fig. 30 | Replace eyelet Replace defective curtain Replace curtains Replace light shields. Replace or adjust shutter brake. Replace guide spring |
Shutter does not completely traverse film aperture when release knob is depressed. | Shutter curtain ribbons Fig. 1-2 loose Light shield felt strips loose. Loose stop disc retaining nut (29) fig. 35 Slow speed escapement hanging at shutter speeds below 1/50-second | Reglue ribbons Reglue felt strips Adjust and tighten nut Clean and repair slow speed escapement |
Unequal spacing between frames. | Loose stop disc retaining nut (29) fig. 35 Loose sprocket wheel screw (34) fig. 35 Improper friction of rewind knob assembly fig. 31 Improper adjustment of compensating friction clutch fig. 1-2. | Adjust and tighten nut Tighten screw. Clean, lubricate and adjust rewind knob assembly Readjust friction clutch |
Baseplate lock has no positive stop. | Locking plate stops (5) fig. 22, bent Angled stop fig. 22, bent or broken | Straighten stops Straighten stop or replace baseplate. |
Baseplate lock has insufficient friction. | Defective upper or lower spring washer (7) & (10) fig. 22 | Replace spring washer |
MALFUNCTION | PROBABLE CAUSE | REMEDY |
Shutter speeds below 1/50-second too slow. | Foreign matter in slow speed escapement Slow speed escapement dry | Remove foreign matter Clean and lubricate |
Shutter speeds below 1, 50-second too fast. | Slow speed escapement anchor does not fully engage Hair spring on gear (8) Tig. 32 defective Spring tension of second shutter curtain too high | Readjust anchor Replace slow speed mechanism Reduce spring tension |
Shutter speeds higher than 1/50- second too slow. | Foreign matter in shutter mechanism Dry shutter mechanism bearings. First Shutter curtain spring tension too high Second shutter curtain spring tension too low | Clean and relubricate Clean and lubricate bearings. Adjust tension Adjust tension |
Shutter speeds higher than 1/50-second too fast. | First shutter curtain spring tension too low Second shutter curtain spring tension too high | Adjust tension Adjust tension |
Uneven exposures | Foreign matter in shutter mechanism Dry shutter mechanism bearings. Shutter spring tensions not properly adjusted | Clean and relubricate Clean and relubricate bearings Adjust spring tensions of shutter curtains. |
Flash bulb does not fire when shutter release is depressed. | Note: Shutter must be correctly adjusted before troubleshooting synchronization. Damaged flash lamp socket Flash lamp socket lead defective Foreign matter between contacts or precontact switch (S1) fig. 4-13 Pitted or burned contacts of switch (S2) fig. 4-13. | Repair or replace socket Resolder or replace lead Clean contacts Replace synchro adjusting lever and clean contact switch of synchro adjusting arm. |
MALFUNCTION j PROBABLE CAUSE | REMEDY |
Flash unit fires when connecting cord is inserted in flash lamp socket. | Shorted flash lamp socket Flash lamp socket lead grounded Precontact switch upper spring (S1) fig. 4-13, grounded Insulating cap (35) fig- 31 of arresting lever missing | Repair or replace socket Repair or replace lead Remove ground. Replace insulation plates if required Replace insulating cap |
Flash bulb fires when winding shutter. | Shorted precontact switch | Remove short |
Flash unit fires erratically. | Intermittent open in flash lamp socket Intermittent open in flash lamp socket lead Intermittent contact of precon-tact switch (S1) fig. 4-13. due to foreign matter Dirty, pitted or burned contacts of switch (S2) fig. 4-13 Broken or disconnected ground wire (9) fig. 31 | Repair or replace socket Resolder or replace lead Remove foreign matter Clean switch contacts. Replace synchro adjusting lever if necessary. Resolder or replace wire |
Flash bulb fires too early or too late. | Incorrectly adjusted contact arm fig. 4-13 | Readjust synchro adjusting arm. |
Electronic flash does not fire when shutter release is depressed. | Damaged electronic flash socket Foreign matter between contacts of precontact switch (3) fig. 4-15 Pitted or burned contacts of precontact switch (3) fig. 4-15. Foreign matter between contacts of main contact switch (4) fig. 4-15 Pitted or burned contacts of main contact switch (4) fig. 4-15 Electronic flash socket lead defective | Repair or replace socket Clean contacts Replace flat spring (20) fig. 35 with contact spring and contact spring (9) fig. 30 Remove foreign matter Replace short contact spring (9) and long contact spring (3) fig. 30 Resolder or replace lead |
Electronic flash fires when connecting cord is inserted in electronic flash socket and shutter is wound or released. | Shorted electronic flash socket. Electronic flash socket lead (16) fig. 30 grounded . Grounded long contact spring (3) fig. 30. | Repair or replace socket Repair or replace Remove ground. Replace insulation plates (2) & (4) fig. 30 if required |
