Olympus OM-1 Service Manual Part 1 of 4
Contents
1. 8818 GEAR 1 SPRING 8819 K CLAW 8820 HOLDING SHAFT 8821 CHECKING LEVER 8824 LOCK LEVER 8826 LOCK SPRING 8827 SHAFT 2 8828 GEAR 2 SHAFT 8836 GEAR 3 8839 GEAR 4 8840 S WINDING PLATE NOTE 10 parts 5 parts 8 parts 2 parts t 0 05 t 0 08 2 parts 2 parts 8 parts 2 parts 2 parts 2 parts OM 1 7 kinds 5 kinds 7 kinds 2 kinds 2 kinds 2 kinds 8 kinds 2 kinds 2 kinds 2 kinds 5 PARTS LIST OM 1 PARIS NO NAME OF PARTS NOTE CA 8841 GEAR 4 BASE 8842 KS LEVER 2 parts 2 kinds 8843 SHAFT 4 8844a LEVER la o 88446 LEVER 1b 30 1 8844c LEVER le 0 1 8845 LEVER 2 8846 LEVER STOPPER 8847 KS HOLDER 8848 KS SHAFT 8849 KS SPRING 8851 GEAR 43 SPRING 8852 SHAFT 4 SCREW 8854 S RING 8855 STOPPER RING 8856 SHAFT 2 SCREW 8857 BASE PLATE SHAFT 8859 BULB PLATE SCREW 8861 RETURNING SPRING 88624 KL PLATE Viren kinds ERR e 8865 KM LEVER 6 parts 6 kinds 8867 M LEVER SHAFT 8872 XM SPRING 8875 TRIPOD SOCKET 8876 FRONT COVERING PLATE 8877 B MOUNT 8878 8 8 DIAL 8879 CONNECTING RING 2parts 2 kinds 8880 DIAL GEAR 2 parts 2 kinds 8881 B BASE PLATE 13 parts 11 kinds 8882 COVERING PLATE 8888 B MOUNT SPRING 8889 CONNECTING RING STOPPER 6 parts 6 kinds 8890 CLICK SPRING 8893 COVERING PLATE 8894 LOHER COVER 8895 SYNCHRO SOCKET 4 parts 4 kinds 8896 FX SYNCHRO KNOB x 8897 FP SYNCHRO CONTACT POINT 8898 FX SYNC2. 8441 pivoted at 8442 rotates counter clockwise The mirroris up Status 6 of Fig B in the Repair Data 17 12 Synchronizing Mechanism for the Exposure Meter When the shutter dial is turned this rotates 8880 directly connected thereto Then the string 8944 adhered to the outer perimeter of 8880 will move to rotate 8980 of the meter using the Moving pulley as a media Three pulleys 8883 in the route are for converting the string 8944 angle At this time the string is given tension by the spring 8999 on the meter side B 21 When the aperture ring is tumed the Connecting lever on the lens tums 8879 8932 which is clinched to the 8925 and is in contact with the Cam of 8879 will rotate itself While doing so it will 8925 in the arrowed direction and further 8929 which is engaged on 8925 Now 8924 will turn since it is made in unit with 8929 It will roll up 8945 to pull the Moving pulley and 8944 and further to turn the pulley on the exposure meter At this time 8946 adhered to the outer perimeter of 8879 will also move to pull 8938 When the aperture ring is returned to the previous position this will insure that the boss of 8879 will always hit the Connecting lever of the lens 13 Mechanical Section of Exposure Meter Changes in Shutter Speed and Lens Opening When the shutter dial is turned from 1 1000 toward B and the aperture ring from F 16 toward open the string 8944 moves in the arrowed d
3. ams 799 9 cers 2000 mer 18222 care E3casrse 327 48 EECH p aoc 2 ro CA9046 ene mine ed Co em e a casso GC BS 7 KS N REPAIR MANUAL MODEL House coo OLYMPUS M I 929 OLYMPUS OPTICAL CO LTD TOKYO JAPAN di um eec Ee Mod Ka oo 4 10280 mens triaso pd zen amna eum SN ensue A juss Ocasror el cane REPAIR MANUAL OLYMPUS M 1 we 935 mes OPTICAL COLD TOKYO JAPAN ecu apen 1 casess Drees casero mwa 240 0 GES 4 7819070 d 23 e usi caesa KE ter caso REPAIR MANUAL MODEL HOUSE CODE T OLYMPUS M i ws 5 5 pu y mm OLYMPUS M I DER OPTICAL TOKYO JAPAN 4 NAME PARTS NOTE PARTS LIST PARTS NO 5526 SPOOL HOLDER 6345 BATTERY COMPARTMENT 110 7381 STOPPER SCREW 7530 SPOOL B 7732 GUIDE 7963 RING E 8076 TUBE 8401 M FRAME o 8404 M LEVER SCREW 84098 ADJUSTING WASHER a 84095 ADJUSTING WASHER b 8409c ADJUSTING WASHER c 8410 LEFT SIDE PLATE 8411 RIGHT SIDE PLATE 8
4. COVER 8722 KEY SPRING 8723 BUSH 8724 KEY POSITIONING SCREW 8725 R KNOB 8726 R LEVER o 4 parts A kinds 8727 R PINCH 8729 PINCH SET SCREW e 8730 R LEVER PIN 8731 R LEVER SPRING 8732 R LEVER WASHER 8733 SHAFT 8734 R SHAFT HOLDER 8735 R SPRING 8738 COVERING PLATE 8739 R LEVER STOPPER 2 h 0 8 8740 R LEVER STOPPER 3 h 1 1 8741 FILM COUNTER COVER 8742 BATTERY CASE 8743 BATTERY CONTACT POINT 8744 STRAP EYELET 8745 LIGHT PROOF L 8746 LIGHT PROOF R 8747 LIGHT PROOF LOWER 8748 LIGHT PROOF SIDE 8749 F W LEVER 8750 F W LEVER WASHER 8751 F W LEVER COVER 8752 F W LEVER HOLDER PARTS LIST PARTS NO NAME OF PARTS CA 8753 F W LEVER DECORATION 8754 F W SHAFT 8757 F PLATE 8761 F W LC 8762 F W GEAR 8763 F SPRING 8764 IDLE 8765 IDLE SHAFT 8770 SPOOL SPRING 8773 SPOOL SHAFT 8774 F W SPRING 8775 F W BASE PLATE 8777 FASTENING RING 8778 F C RETURNING LEVER 8779 S T SHAFT 8780 SPROCKET HOLDER UPPER 8781 F C GEAR SHAFT 8783 RETURNING SPRING 8784 F C GEAR 8786 C RING 8788 S T GEAR 8793 F C LC 8794 F C PLATE 8795 F C SPRING 8796 L STOPPER 8797 WASHER RUBBER 8798 KS SHAFT 8799 K STOPPER 8800 K STOPPER COVER RUBBER 8801 SPOOL HOLDER LOWER 8803 F C STOPPER 8806 F W LEVER COVER STOPPER 8808 SPROCKET BASE SCREW 8810 BULB SETTING PLATE 8811 SPROCKET 8813a WASHER la 8813b WASHER 1b 8815 SPROCKET HOLDER LOWER 8816 GEAR 1 8817 GEAR 1 SCREW
5. CURTAIN STOPPER 8523 TUBE SHAFT HOLDER 8529 ROLLER B 8531 TENSION NUT 8532 TENSION NUT STOPPER 8535 FELT B 8538 lst CURTAIN 9 parts 9 kinds 8539 STOPPER FOR CAB540 8540 FRAME 5parts 3 kinds 8541 FELT 8543 53 parts 10 kinds 8545 GEAR SCREW e 8556 CONNECTING PLATE ll parts 11 kinds 85678 LEVER 5 4 parts 4 kinds 8567M LEVER M 4 parts 4 kinds 8567L LEVER L 4 parts 4 kinds 8570 SPRING FOR 8567 8571 6 CAM SHAFT 8575 LOW CAM 8576 HIGH CAM 8577 SPEED GEAR parts 3 kinds 8578 A LEVER 1 3 parts 3 kinds 8580 B LEVER 1 parts kinds 8585 LEVER SCREW 8586 A LEVER SPRING 8588 B LEVER SCREW 8589 SHAFT FOR CAB592 8590 B LEVER SPRING 8592 RELEASING CLAW 8594 SPRING FOR CA8592 8595 S LEVER 8598 S LEVER WASHER 8600 2nd CURTAIN 9 parts 9 kinds 3 PARTS LIST OM I PARTS NO NAME OF PARTS NOTE em CA 8601 STOPPER PLATE 8602 X SYNCHRO CONTACT POINT 8603 FX SYNCHRO CONTACT POINT 8604 SYNCHRO CONTACT POINT 8605 L CAM 8606 CAM 8609 M LEVER 2 parts 2 kinds 8610 M LEVER SHAFT 8611 M LEVER SPRING 8612 A LEVER 2 8614 LEVER 2 SCREW 8615 A LEVER 2 SPRING 8617 GOVERNOR BASE 8618 LIGHT PROOF PAPER 8701 DIE CAST BODY Be available 8702 FRONT CASTING PART 4 pa kinds 8703 TOP COVER 4 parts 4 kinds 8704 BOTTOM PLATE 8705 REAR COVER 20 parts 12 kinds 8710 PRESSURE PLATE 4 parts 3 kinds 8717 KEY 2 parts 2 kinds 8719 KEY COLLAR 8720 KEY
6. the curtain remains pulled by the Tension Spring equipped within 8527 in the arrowed direction When the shutter is released and the mirror is flipped up 8592 is released from the gear The first curtain runs as Main Spring in 8527 rolls it up The rotation speed of 8527 at this time is an important factor determining the exposure time since it relates to the speed of the first curtain LI 18506 8537 8519 For shock and noise absorption the brake mechanism is provided At end of the curtain movement the boss on 8547 or 8548 presses the tweezer squeezing up 8519 and 8520 to effect brake on shaft rotation i hes 8520 A 8579 MUT esis 2 8579 8548 NC 7 8 B 14 Second Curtain Operation While the shutter is charged the curtain remains pulled by the Tension Spring 8599 provided in 8526 in the arrowed direction Upon receipt of the signal from the first curtain 8563 is released and the second curtain string is wound up onto 8526 by means of the Tension Spring 8599 and the curtain runs At this time the rotation speed of 8526 is an important factor determining the exposure time since it relates to the speed of the second curtain Shutter Speed Adjustment The exposure time is determined by the curtain speed and the slit width interval between the first and the second curtain When the curtain speed is fixed the exposure depends on
7. the requirement i e 1 4 and 1 8 When the shutter dial is set at 1 4 or 1 8 the S lever of the governor escapes from 8606 and the Small Ankle will be engaged Then 8605 presses the A lever to release the Large Ankle The speed adjustment for 1 4 and 1 8 is directed from 8575 to the Cam lever and thus changes the operating angle of the lever Ref E 30 1 15 1 30 The only difference from the previous speeds 1 1 1 8 is that it does not use the ankle of the governor but the gear of the governor alone to apply a load on 8548 When the shutter dial is set at 1 15 or 1 30 positions of 8575 and 8605 are determined by the gear Both Large and Small Ankles are pressed toward outer perimeter of the Governor cam and released According to the height of 8575 the movement of the Cam lever is governed and further the position of the G lever Thus the start of the second curtain s run will be delayed as appropriate Ref 30 B Bulb The movement of the first curtain is same as in other cases By means of 8576 8551 is placed in the position to escape the action of 8549 Therefore the second curtain is not released by the operation of 8547 When the release button returns to the original position 9079 moves in the arrowed direction and its boss hits 8568 When 9078 retums 8568 rotates in the direction of 2 shown in the illustration below 8563 in unit with 8568 is released from the embossed portion of the Gear It will
8. the slit width In case of MDS the curtain speed is set at 11 7 12 1 ms for both the first and the second curtains and the exposure time is adjusted by various slit width The major part of the mechanism used for this purpose is Low Speed 1 1 1 2 Large ankle on the governor 1 8 Small ankle on the governor 1 15 1 30 Gear only of the governor High Speed 1 60 1 1000 the shape of 549 Cam not using the governor 15 High Speed 1 60 1 1000 There is constantly a force by Tension Spring 8599 trying to make various parts work in such an order as 8527 8538 8537 8506 8519 8547 When 8592 is released as a result of mirror lifting it releases 8547 Then the first curtain starts moving and 8506 rotating as 8527 is rotated by the force from 8530 The interval between curtains i e how soon the second curtain should start after the first curtain is controlled as follows 8547 clinched on the Gear A rotates in unit with the Gear A and pushes out 8551 to let the back of 8551 release 8563 It will rotate 8548 and start the second curtain The shutter speed adjustment for 1 60 1 1000 is made by 8577 engaged on the shutter dial When it is set at the desired speed between 1 60 1 1000 it will determine the position of 8576 Through 8559 connected to 8576 it will further determine the position of 8551 When released 8551 retums to its original position Low Speed 1 1 1 30 Since t
9. 05 Position of 9044 at the time the sprocket is synchronized Release for CA8849 KS spring Action At the time of film advancing motion the embossed portion of 8847 is rotated in the arrowed direction and hits 8842 immediately prior to completion of shutter charging action 8847 turns 8842 in the arrowed direction to release the lock If the shutter is operated while 8842 is in contact with the embossed portion of 8547 the 8849 engaged on 8842 works to push 8847 and the curtain speed is influenced Therefore such should be avoided 8842 Me ER 8547 HA Jf 8 9 1 When 9082 bufton is pressed 8862 moves in the arrowed direction and tums by means of 8863 8810 in the arrowed direction 2 When 8810 is moved it hits 8850 clinched on the KS lever When it is further moved it turns the KS lever by 8850 action in the arrowed direction and releases 8842 from the boss on 8547 3 When the 8862 is moved still further the mirror commences its operation and the shutter also works 8842 8547 B 10 4 Shutter Timing Overall Time of Operation BEER ms Shutter Mirror First Second Overall Release elected Curtain Curtain operation First finishes finishes completed Curtain its run its run starts Second Mirror Curtain lowered Starts The above timing is based on the curtain movement from one edge to another edge of the mask Therefore it does not i
10. 12 is lowered 8425 is locked by 8432 The mechanism returns to the original state shown in Fig A B 19 10 Mirror Brake Mechanism To absorb or prevent shocks during the mirror travel an air brake is provided consisting of a cylinder and a piston which is effected towards the latter part of the mirror movement vertically Steps of Operation 1 When the mirror begins its movement 8456 moves in the direction of 1 and its other end in the direction of 2 2 8456 and 8462 being connected by 8460 8462 moves in the direction of 3 3 8464 is fixed onto 8462 8464 moves in the direction 4 4 When the mirror is raised 20 22 8464 will hit 8469 absorb the shock at this time 8464 is used and further a piece of rubber sheet is glued at its tip 5 8464 while bending itself will push down 8469 in the direction of 5 6 The mirror is completely raised Positioning 45 of the Mirror 8401 hits 8476 and the mirror thereby is fixed in position of 45 The necessary adjustment is made by rotating the PUK1 4 x 350 and changing 8476 position B 20 1 Mirror Up Mechanism When a short focus lens is used the lens will hit the mirror Therefore it is necessary to lift up the mirror and thus the mirror up mechanism is provided to meet the reguirement 1 When 8719 is turned 8918 moves in the arrowed direction 2 8486 presses 8456 thus lifting the mirror 3 Simultaneously with 8456 movement
11. 412 M CHARGING LEVER 8418 STOPPER SPRING 8419 M HOOKING LEVER 8421 HOOKING LEVER SPRING 8422 TUBE 2 8423 RETURNING SPRING 8425 CONNECTING LEVER 8427 M WASHER RUBBER 8434 HOOK SPRING 8435 M BASE PLATE e 8437 MS SPRING 8441 M LEVER 8444 TUBE 93 e 8446 M RING 8447 M SPRING 8448 CONNECTING LEVER SPRING 8450 MU RING 0 8451 MU RING 1 8452 MU RING 2 8453 MU RING 3 8454 M PIVOT 8457 LEVER SHAFT 8459 MU RING 4 8460 e 84606 LINK b 8460c LINK c e 8463 E RING 08 8464 SPRING 1 8466 SPRING 2 8467 SPRING 3 8468 SPRING COVER 1 8469 PIPE CONNECTOR 8471 PIPE e 8473 PIPE HOLDER UPPER 8474 PIPE HOLDER LOWER 8476 M POSITIONING SPRING 11 parts 8 t 0 15 t 0 20 t 0 30 11 parts 10 5 parts 4 5 parts 5 4 parts 3 5 parts 5 6 parts 6 kinds kinds kinds kinds kinds kinds kinds kinds kinds kinds kinds PARTS LIST OM i PARTS NO NAME OF PARTS NOTE CA 8477 M POSITIONING SCREW 8478 POSITIONING PLATE 8479 M POSITIONING SHAFT 8481 S WASHER RUBBER 8483 LIGHT PROOF PLATE MU SHAFT 8486 MU LEVER 5 parts 5 kinds 8489 MU SPRING 8490 RIGHT COVERING PLATE 8499 B MASK 8501 S BASE PLATE 6 parts 6 kinds 8508 CURTAIN BASE R 2 parts 2 kinds 8510 ROLLER A 8513 ROLLER HOLDER 2 parts 2 kinds 8517 TUBE STOPPER SCREW 8519 TUBE SHAFT 2 parts 2 kinds 8520 TUBE SHAFT B 2 2 kinds 8521 2nd CURTAIN STOPPER 8522 lst
12. HRO CONTACT PLATE 8899 FX SYNCHRO CONTACT SPRING 8900 INSULATING PLATE 8901 INSULATING PLATE 8902 FX RIVET 8904 PENTAPRISM BASE 2 parts 2 kinds 8905 VIEW FIELD MASK 1 8907 FRAME 8909 SPRING 8910 F SPRING SHAFT 6 PARTS LIST OM I 5 5 8911 F SHAFT 8912 F LOCK SCREW 8914 DAMPER 1 8915 DAMPER 2 8916 DAMPER 3 8917 MU KNOB 8918 MU CAM 8922 MU BASE 4 parts 4 kinds 8924 F PULLEY 6 parts 6 kinds 8925 CAM GEAR 5 parts 5 kinds 8931 PULLEY SHAFT 8933a RETURNING ROLLER a 3 3um diam 8933b RETURNING ROLLER b 3 4mm dian 8933c RETURNING ROLLER c 3 5mm diam 89334 RETURNING ROLLER d 3 6mm diam 8933e RETURNING ROLLER e 3 7mm dian 8933 RETURNING ROLLER f 3 8mm dian 8936 P COVER 8938 B SPRING 4 parte 4 kinds 8939 B SPRING SHAFT 8940 COVERING PLATE B 8941 F HINGE 8944 B STRING M L 8946 B STRING R 8947 B MOUNT SCREW 8949 B SPRING PLATE 4 parts 4 kinds 8950 COVERING PLATE 8951 D FASTENING RING 8955 F PULLEY SCREW 8957a R ROLLER a 3 6mm diam 8957b R ROLLER b 3 7m diam 8957c R ROLLER c 3 8m diam 8959 DIAL STOPPER 8960 COVERING PLATE WASHER 8961 SM FRAME 8962 S LEVER 8963 S LEVER BASE 8964 S LEVER BASE NUT 8965 S LEVER CONNECTING PLATE 2 parts 2 kinds 8968 PIN FOR 970 8970 CONTACT POINT 1 8971 CONTACT POINT 2 8972 PIN HOLDING PLATE 8973 C LIGHT PROOF 8974 S COVER 8975 C COVE
13. NE AND MECHANICAL FEATURES General Outline OLYMPUS Code Name MDS Model Name Olympus OM 1 Main Features Format 24 x 36mm Lens Mount Olympus OM Mount bayonet type Flange back 46 0mm Bayonet rotation 70 clockwise to mount Lens release button on the side of the lens Shutter Type Focal plane type Shutter Speed 1 to 1 1000 of a second Dial On the lens mount Charging Self cocking Flash Synchronization X and FP with switch With electronic flash X 1 to 1 60 sec With Class M bulbs X 1 to 1 15 sec With Class F bulbs X 1 to 1 15 sec With focal plane bulbs FP 1 60 to 1 1000 sec Viewfinder Type Single reflex type eye level viewfinder Prism Pentagonal roof prism fixed silver coated Focusing 8 1 1 Microprism Matte Type provided Interchangeable with any of ll additional screens available Viewfield Exposure Indicator Magnification Reflex Mirror Type Mirror up Mirror Cut Out Reflection Exposure Meter Type Method of Measurement Sensing Cell Measuring Range Film Type Indication Insufficient Light Waming ASA Ratings Power Source B 2 97 both vertically and horizontally Visible in the viewfield is the exposure measurement indication 0 92X at infinity with standard 50mm lens Quick retum type The mirror can be looked up by 90 rotation of the mirrorlock up lever No mirror Cut Out in the viewfinder re
14. OLYMPUS OM 1 REPAIR MANUAL OLYMPUS OPTICAL CO LTD TOKYO JAPAN DRAWING AND PARTS LIST GENERAL OUTLINE AND MECHANICAL FEATURES CHECK POINTS INSPECTION STANDARD ORDER OF DISASSEMBLY OUTLINE OF REPAIRS PARTS WHERE OIL GREASE ETC SHALL BE USED SPECIAL TOOLS OTHERS DRAWING AND PARTS LIST OLYMPUS OPTICAL CO LTD oe EXPLANATORY NOTES ON VARIOUS MARKS amp NUMBERS USED IN IMPROVED PARTS TABLE Only Body Die Cast is not available in case of overse An assembled parts is supplied including parts marked with Single parts is supplied Not to be supplied in single parts but as an assembled parts Left handed screw the mate screw hole is not marked particularly All right handed screws have no special indication Improved parts Number shows INDEX in IMPROVED PARTS TABLE where more details are explained No more available parts The place where parts have been improved Dimensions of improved parts and improved points Replacing parts of no more available parts marked with How to replace parts or how to repair Original parts are also usable instead of improved parts Printing error No parts are built in cameras The part which should not be touched directly by fingers Be sure to cover fingers with rubber sacks Clarify HOUSE CODE PARTS NUMBER and QUANTITY in your ORDER SHEETS pr we CA8793 gt 783 cams 798
15. R 8976 M EARTH 8977 M LOWER PLATE 10 parts 10 kinds 8980 M PULLEY 2 parts 2 kinds 8981 PULLEY HOLDER 2 parts 2 kinds 8982 M GEAR L PARTS LIST OM 1 yA PARTS NO NAME OF PARTS NOTE CA 8988 VIEM FIELD MASK 2 8995 M BASE 1l parts 11 kinds 8996 GEAR FOR 977 8998 SCREW FOR CA8996 o 8999 SPRING FOR 977 9001 LOCKING SPRING 9003 LOCK BUTTON 9004 LOCK BUTTON SPRING 9005 LOCKING RING 9007 DIAL 9008 PULLEY SCREW 9010 CAM 2 parts 2 kinds 9011 CAM HOLDER 9016 A LEVER SCREW 9020 ASA PLATE 9021 ST SPRING 9024 INSULATION SHAFT 9025 8 BASE Sparts 5 kinds 9026a T WASHER a t 0 1 9026b T WASHER b t 0 2 9026 T WASHER t 0 4 9030 T NUT 9031 LEAD WIRE 105mm LONG BLACK 9032 LEAD WIRE 45mm LONG BLACK 9033 LEAD WIRE 90mm LONG BLACK 9034 LEAD WIRE 70mm LONG RED 9036 LEAD WIRE 100mm LONG BLACK 9037 P PLATE 9041 6 parts 6 kinds 9044 INNER PLATE rj 9045 LEVER SPRING 9046 PLATE HOLDER 9047 ST CLAW 2 parts 2 kinds 9049 ST SPRING 9051 ST SCREW 2 parts 2 kinds 9052 STOPPER SCREW 9053 LEVER CUSHION 9056 SPACING PLATE 9057 CIUCUIT PLATE 9060 CONTACT POINT COLLAR 9064 M RELEASE 1 9065 2 2 parts 2 kinds 9067 MR SHAFT 9068 M ECCENTRIC COLLER 9069 MR SPRING 9070 C SCREW 9071 S LEVER STOPPER 9072 ST LEVER 2 parts 2 kinds 9073 S COVERING PLATE 9074 ST START LEVER 2parts 2 kinds 9075 F SPRING 2 part
16. USTING PLATE f 9144g FRONT ADJUSTING PLATE g 9144h FRONT ADJUSTING PLATE h 9145 REAR ADJUSTING PLATE a 9145b REAR ADJUSTING PLATE b 9145c REAR ADJUSTING PLATE 91454 REAR ADJUSTING PLATE d 9145 REAR ADJUSTING PLATE e 9145 REAR ADJUSTING PLATE f 9145g REAR ADJUSTING PLATE g 9145h REAR ADJUSTING PLATE h 9146 SPOOL SHAFT 9148 LEAD WIRE 45um LONG BLACK 9501 FLESNEL LENS LC 4070 EYE PIECE LENS 4073 PENTAPRISM 6 30 GOVERNOR V 40 SELF TIMER 951 EXPOSURE METER SET SCREW PUK 1 4 x 1 8 30 1 4 x 1 8 SN 1 4 x2 so 1 4 x 2 2 50 1 4x3 so 1 7 x 1 8 50 1 2x2 17x2 2 50 1 7 x 2 5 50 1 7 4 so 1 7 8 50 2 x 1 8 0 2 180 2 x 2 2 50 2 x3 50 2 3 88 2 3 550 2 x4 550 2 x6 so 3PUK 1 4 x 1 8 50 1 4 50 1 4 x 5 5 SO 1x3 so 1 x4 50 PSK 1 4 x 1 8 50 1 4x2 so 1 4 x 2 5 50 1 7 x 1 8 SO 1 7 2 so 1 7 x 2 2 50 1 7 x 2 5 50 1 2x3 50 1 7 x 3 5 50 1 7 SH 2 x2 50 2 2 2 50 2 2 5 50 2 x3 50 2 x3 sk 2 x4 11 parts 10 kinds PARTS LIST A 10 OM 1 PARTS NO NAME OF PARTS NOTE SIUE COE JE Wi 958 E Lr 101 Bo 1 4 102 BO 1 4 604 BO 1 4 104 1 7 463 SN 310 Bo 103 203 SN 1 7 2 5 BO 1 5 SA 6 wa e 228 UO 1 4 430 00 1 5 230 00 1 8 336 2 1 350 8 6 101 602 636 405 204 2228 GENERAL OUTLINE AND MECHANICAL FEATURES OLYMPUS OPTICAL CO LTD GENERAL OUTLI
17. gardless of the lens used from 8mm fisheye tnrough 800mm ultra long telephoto in case of full open aperture Highly reflective special coating is applied on the reflecting surface Through the lens light measuring meter Open aperture light measuring method for average light measurement Zero method system Two CdS cadmium sulphide type cells EV1 2 EV16 9 with 55512 at ASALOO EV2 EV1 7 with MS5014 at 100 EV2 35 EV17 35 with MS5018 at ASALOO Film sensitivity indicator dial with ASA ratings with the locking device When switched in the needle jumps down extremely beyond the lower limit of the range indicator if light is insufficient ASA 25 1600 Mercury battery 1 3V JIS H D type e g National H D Toshiba H D Mallory RM 625R GE No 625 Eveready E625N etc On Off Switch Calibration Film Loading Loading Method Film Advance Exposure Counter Exposure Counter Index Film Rewinding Interchangeable Rear Cover Shutt er Release Self Timer Accessory Shoe Synchro socket Lever type 1 3 Easy loading system EL system by opening up the rear cover which is hinged and provided with the magic lock opened when the film rewinding knob is pulled out The take up spool rotates in the direction contrary to the lever movement Single stroke rapid winding lever Also capable of film advancement by several short strokes Winding angle 150 Pre wind
18. he mechanism of the first curtain operates in a same manner in case of a high shutter speed the exposure time is adjusted by controlling the timing after the start of the second curtain until the moment the Patch of the second curtain appears in the wash The control is performed by the governor When the shutter dial is set at 1 1 or 1 2 it will determine the position of 8577 engaged onto the shutter dial It will further set the position of 8605 screwed with 8577 The A lever is dropped into the concave of 8605 and the Large Ankle is engaged The speed adjustment of 1 1 and 1 2 is made by the Cam lever connected to 8575 The Cam lever will determine the position of the G lever and thus change the angle of operation of the Governor to adjust the speed Ref E 29 Now the preparation of speed adjustment for 1 1 or 1 2 is completed After the first curtain run 8563 is released When the Gear B second curtain starts moving the boss on the Gear G hits the G lever on the governor After its operation for appropriate time on the governor the boss on the Gear B is released from the G lever This removes the Gear B load and the second curtain runs in a hfgh speed The position of 8551 will be the same in the case of 1 60 B 16 Ya 1 8 Among the series of the governors for 1 1 and 1 2 a Large Ankle is used in place of the Small Ankle to lessen the load This controls the operating angle of the governor by 8575 so as to meet
19. ing angle 30 Prevention against double exposure and double film advance Progressive and automatic retum type 8 12 4 6 34 36 E Rewind crank Film release knob to be turned 90 toward the R mark with a red dot Automatically reset when film is to be advanced By the mounting pin Shutter release button on the body Also with a cable release JIS approved screw in type Lever system Rotation angle 180 with approx 4 12 sec delay Action is started by the start lever In the middle of the timer action the start lever may be shifted back to stop it The timer may be reset then Direct contact shoe to be screwed on As per JIS standards 2 2 3 4 5 6 7 8 9 10 12 13 14 15 16 Mechanical Features Tripod Screw As per JIS standards Size amp Weight Body only 136 x 83h x 502 4909 17 3 oz with 55512 136 x 83h x 974 8109 28 2 with 85014 136 x 83h 86 54 7209 25 4 oz with 55018 136w x 83h x 81d 6609 23 3 Film Advance Sprocket Release EE 6 Release for KS spring Action Shutter Timing e WEE 10 Shutter Charging e ee deeg Wye dees vases of g Zem First Curtain Operation ba 13 Second DEM hs dT d AERE 14 Shutter Speed Adjustment En EE 14 Mirror Opera
20. irection as shown in the illustration next page to tum 8980 9000 in unit with 8980 turns 8984 and further 8982 through 8983 which is united with 8984 8982 is fixed on the meter frame by screws Thus the meter is activated On the pulley is applied a force in the direction gt by 8999 and 9021 engaged on 8996 and the string 8944 is given tension constantly 14 ASA Setting Transmission When the ASA dial 9007 is turned 9009 which is engaged onto the groove of the A dial tums 9010 9010 is in contact with 9018 The lifting force of 9010 is transmitted to turn the 9013 pivoted at 9015 To 9013 is connected 9014 by 9016 On 9014 is clinched 9017 which is fitted into the groove of 9019 Thus 9019 is turned 9019 is connected to 8985 by a screw When 8985 is turned the meter will be activated 23 15 Warning Switch When the light is insufficient and below the synchronous range of the exposure meter a warning is given in the viewfinder In case of various lenses used if the light is below the lower limit of the measurable range the needle is made to swing approximately 2EV toward the plus 4 side and not to meet the center of the index Switched off When within the range Mechanical Section When out of Mechanical Section the range i a F Range of Measurement of Each Lens MS5014 BV2 17 M85018 BV2 35 17 35 MS5512 BV1 9 16 9 ON
21. nclude the movement of the first and the second curtains before they appear one end of the mask and after they will have reached the other end of the mask B 11 5 Shutter Charging 1 When film is advanced 8836 and 8839 are rotated which in turn makes the embossed portion of 8840 of 8839 push A pin 2 connected to 8547 Thus 8547 is rotated 2 When 8547 is rotated it turns 8506 by means of 8519 connected thereto 3 At each end of 8506 is glued a string to which is attached 8538 of the first curtain When 8506 is rotated the strings are wound up towards 8506 against the spring force effected on 8524 and 8527 and thus the first curtain moves in the arrowed direction 8537 8538 8506 8506 lt 4 8536 i Imus i aas 8519 a P 8524 5 8836 8838 A Pin 2 B 12 4 When 8547 is rotated pin of the 8547 pushes B pin of the 8548 thus moving the second curtain in the arrowed direction 8447 and 8548 will move simultaneously 5 Upon completion of winding as shown below 592 is engaged onto the tooth of 8547 and locks 8547 and 8548 The first and second curtains will remain wound up while pooling the returning force towards the spring This will complete the charging action of the shutter Curtains are wound up towards this side 8547 B 13 6 First Curtain Operation While the shutter is charged
22. position of the Warning Switch 85014 The range where the warning switch is turned on ASA 100 SS 1 1 14 2 2 8 4 5 6 d 1 1 1 1 MS5018 The range where the warning switch is turned on ASA 100 SS B 18 28 4 56 8 1 1 1 zi 1 16 Flash Synchfonization Circuit EL FP X switch X circuit when not in contact FP circuit when in contact In a single reflex normally it takes the mechanism wherein the X contact is always kept ON and or it is switched on again when the film is advanced This causes an explosion at the time of the film advance Therefore normally the X contact piece is made movable to prevent it However because it means unstable positioning of the contact piece FP and X are connected parallelly in case of MDS To check the insulation resistance of the contact piece in case of X contact set the shutter dial at 1 1 and release it While the 1 1 governor is in operation move the film advance lever for about half a stroke See if the needle of the Insulation Resistance Meter shows over 30MA check can then be carried out In case of FP tumed ON and X being OFF when the film advance lever is moved for a full stroke curtains will make their runs and will return to the normal position A check can then be carried out 8 25 Do not attempt checking too frequently since it may cause for strings for curtains to come off the pulley FP Contact The FP contact ha
23. rotate the Gear B and the second curtain starts running 8548 8568 Function of C 8612 Lever In case of snapshot at low shutter speeds 1 1 1 4 CA8612 removes ankle from Gear governor and retums G lever immediately to the appropriate position This prevents irregularity of low shutter speeds Ref 27 9 Mirror Operation 8447 Shutter Charging Mirror Charging 1 When the film is advanced 8412 is pressed in the direction of Q Fig A 2 Since 8448 is stopped by 8432 and 8441 by 8448 8448 and 8412 are charged Fig B 3 8412 is locked by 8419 Fig B Tig B Subsequent to Mirror Charging B 18 Mirror Operation 1 o x When 9082 Botton is pressed 8432 is pushed in the direction of 3 to be released from 8425 E 8425 is pushed by 8448 in th direction of 4 Fig B in the direction of 6 Along with the movement of 8425 8441 movi to lift the mirror Fig When the 8441 moves in the direction of 6 8439 is moved towards 7 to transmit the mirror lift up to the shutter 8425 8423 Fig C Mirror Lifted 8412 8419 8425 is fixed in position by 8418 which acts as the shock absorber Upon receipt of the message from the shutter that the second curtain has completed its run 8419 is pressed in the direction of 8 Fig C When 8419 is released from 8412 8412 is lowered by 8423 8425 is pressed down at the same time 84
24. s 2 kinds PARTS LIST PARTS NO NAME OF PARTS 9076 RELEASE BASE NUT 9077 START LEVER 9078 5 RELEASE PLATE 9082 S RELEASE BUTTON 9083 SR BUTTON WASHER 9084 o 9086 S LEVER PLATE D 9087 D SCREW 9088 W SPRING 9091 COVER RUBBER 9092 SM COVER 9093 SPRING FOR CA9099 9094 HINGE PIN HOLDER UPPER 9095 HINGE PIN HOLDER LOWER 9097 HINGE PIN SCREW 9098 HINGE PIN A 9099 HINGE PIN B 9100 COVERING PLATE 9102 LEFT SIDE LEATHER 9103 RIGHT SIDE LEATHER 9104 REAR COVER LEATHER 9105 HOLDER WASHER 9106 ADJUSTING WASHER 1 9107 ADJUSTING WASHER 2 9108 T COLLER 9111 ST WASHER 9112 C WASHER 9113 FW GEAR HOLDER 9114 M SPRING SCREW 9115 LEAD WIRE 30mm LONG BLACK 9117 LEAD WIRE 110mm LONG RED 9119 CELL 9124 L CONTACT POINT 9125 M CONTACT POINT 9128 LS GUIDE 9129 TAPE 9130 COVER HOLDER 9131 PRISM HOLDER RIGHT 9132 PRISM HOLDER LEFT 9133 PRISM HOLDING SPRING 9134 COVERING PLATE 1 9135 COVERING PLATE 2 9139 R COLLER 9141 PINCH 9142 M STOPPER SCREW 9143 LEAD WIRE 100mm LONG YELLOW 91442 FRONT ADJUSTING PLATE 91446 FRONT ADJUSTING PLATE b 9144 ADJUSTING PLATE c 91444 FRONT ADJUSTING PLATE d 9144e FRONT ADJUSTING PLATE e 9 4 parts parts btia OM 1 9 kinds 3 kinds 9 OM 1 PARTS LIST PARTS NO NAME OF PARTS NOTE 9144f FRONT ADJ
25. s to be switched in within 10 ms prior to complete opening of the first curtain Thus normally the signal is received from the mirror driving mechanism In case of MDS the signal notifying the mirror rising is transmitted to the shutter which in tum makes the switch work by 8439 When the mirror rises 8439 moves in the arrowed direction to switch the EP contact on X Contact Since the X contact is to be switched IN immediately upon completion of the first curtain opening the switching action 15 carried out by the first curtain cam and the first curtain brake In case of MDS it is switched in by 8578 of the first curtain brake lever Immediately prior to completion of the first curtain opening 8578 starts rotating in the arrowed direction thus effecting the brake The X contact is made effective immediately after completion of the first curtain opening The brake is kept effective until completion of the film advancement In the meantime the X contact 16 also kept effective
26. tion pe et egen ieti s are Saal Mirror Brake Mechanism 19 Mirror Look up 5 Exposure Meter Synchronization Mechanical Section of Exposure 21 ASA Setting Transmission Nen hig AKG eee nier ne s oa ee POP s ed 23 Flash Synchronization Circuit B 5 Film Advance When 8749 is turned 8755 is driven in the arrowed direction by means of 8805 When 8755 moves two 8758 pivoted at 8760 is moved in the arrowed direction to engage on 8761 and to turn it 8762 is screwed on 8761 which rotates simultaneously to drive gears engaged on it This starts the film advancing motion One of the two 8758 will rotate 8761 8759 8755 S Upon turning 8749 to the fullest extent and releasing it 8755 returns to the original positon moving in the arrowd direction by means of 8774 hooked on 8755 At this time since 8758 escapes in the arrowed direction pivoted at 8760 there is no clicking sound for 8758 going beyond the latchet Amount of 8758 s escape is determined by the guiding hole for 8760 on 8755 2 B 6 8755 stops when it hits 8796 8796 is covered with rubber to absorb noise Film advancing motion by engagement and disengagement of 8758 as described at right may be carried out by one single stroke or by several short strokes Sprocket Release Rewinding Mechanism Unlike the former push but
27. ton system it adopts such a mechanism where in 9141 located at the joint of CA8703 Top cover on the left front of the camera and the main body is turned to release the sprocket 9047 engaged into the groove of the sprocket moves jointly with 8788 It means that to release the sprocket this 9047 should be removed from the groove of the sprocket 9045 Order of Operation 3 8 When 9141 is turned counterclockwise 9141 adjoining 9044 pushes up 9051 at its tip Then 9047 connected to 9051 is pulled up simultaneously and comes off from the sprocket groove making the sprocket freely rotatable At the stage 2 above if CA8749 Lever is turned up 8788 rotates in the arrowed direction simultaneously rotating 9051 connected with 8788 On 9051 are 18 grooves which catches 9044 to rotate it as 9051 rotated When 9044 is turned until it is released from the groove of 9051 by 9045 9141 backs to the original position At the same time 9047 is pressed down by 9049 If the sprocket groove is in the position corresponding with 9047 the sprocket movement will also be synchronized 3 If the groove position does not correspond with 9047 the sprocket will not be synchronized at the moment 9141 is retumed to its original position but left released In this case winding operation needs to be repeated until 9047 fits into the sprocket groove Position of 9044 at the time the sprocket 18 released 2 ST A si y 9
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