Olympus OM-4 Service Manual Part 1 of 4
Contents
1. OLYMPUS OPTICAL TOKYO JAPAN MDY 2 ZEBRA IMPROVED PARTS TABLE 565000 564700 su NEW 4 594000 SY CE422000 OLD 9 WIS 567800 3 NEW 9 ES93000 CES92900 MDY 2 2 IMPROVED PARTS TABLE 2 NEW OLD 22 1 178200 23178200 566300 594300 Mov 2 IMPROVED FARTS TABLE 4 NEW ICIO NO 55211 2179400 ICIO 0 25241 4 Kenn CN ZC458600 585000 FAS lt gt gt DouBLE SA om A A DOUBLE BENS COATED 555 Dy 52 RUE er A UA 1557 gt QUA Sail Nacasasoo 7 20497300 224 gt 22178800 20463600 aS RE pos E ex DSII4400 SCRY Up 593800 MDY2 CIRCUIT DIAGRAM NOA 5 MDY2 CIRCUT DIAGRAM roma 4 baker d apro tmi IDY2 WIRING DIAGRAM MDY2 WIRING DIAGRAM2. n the technical manual Parts position The technical manual is divided into 16 equal sections Esch section can be identified by 15173 B and from left right and 4 from top to bottom Indicates page number wnicn the technical manual appear is not indicated particularly sand However 1 1 page EXPLODED PARTS DIAGRAM as EXPLODED PARTS DIAGRAM o HOUSE_000 UNIT FIG OPTICAL co tro TOKYO MODEL 4 EXPLODED PARTS DIAGRAM 4 EXPLODED DIAGRAM jaceseroo mouse cone uri 4 las OLYMPUS OPTICAL CO LTD TOKYO JAPAN d Porras DIAGRAM EXPLODED PAR MODEL HOUSE CODE or UNIT 4 2 IJ OLYMPUS OPTICAL CO LTD TOKYO JAPAN 9 4 EXPLODED PARTS DIAGRAM MODEL HOUSE CODE or UNIT 4 2 OLYMPUS OPTICAL CO LTD TOKYO JAPAN 4 EXPLODED PARTS DIAGRAM MODEL HOUSE CODE or UNIT FIG 4 2 OLYMPUS OPTICAL LTD TOKYO JAPAN EXPLODED PARTS DIAGRAM MODEL HOUSE CODE or UNIT FIG 4 2
3. x 84 H x 50 mm body only 5409 body only 2 e 25 2 A3 This notation is entered in the Remarks column of parts list and indicates parts po EXPLANATION OF MARKS Indicates parts that are supplied both as a sincl piece and ar assemoteo cr case the single part is incorporated in the assembled unit indicated with the ma Exception Parts in the mark not supplied in single pieces Parts that are sunplied only in single pieces are not indicated with any mark While parts that are supplied as an assembled unit are prefixed with 2 or A Several types of parts for the same position are available from which most sui be selected Parts differ according to different models and tunes This rrark is used to irc combinations in a picture Left handed screw The mate screw hole is not marked particularly Indicates parts that should not be touched directly by bare hand because special surface treatment is applied Wear fingerstalis or use tweezers Not supplied as a repair part Used exclusively for black finish models Indicates original parts New modified ones are not indicated with this mark Eoth original and modified parts are supplied No more available parts due to design cnange or aut of stock correction mark Parts with this mark are not vailable Modified parts that are unable to show in te technical manual The figure indicstzs reference page number
4. OLYMPUS REPAIR MANUAL OLYMPUS OPTICAL CO LTD TOKYO JAPAN CE NOTE CONTENTS OM 4 REPAIR MANUAL General Outlines Inspection Standards Disassembling Procedures 255 55 iReassenbling and Adjusting Procedures Diagnostic Procedures eene of Tools amp Jigs Description of Mechanism information and compatability with OM Systems Accessories Some of the information in this manual is specific to either early later production cameras and may not apply to the model you are working on Wiring and circuit diagrams are supplied for both early ROM 1 and later ROM 4 models 1 Outline of Product Model name House code 2 Main Specifications Type Film format Lens mount Shutter Synchronization Light measuring method Automatic exposure control by average light measurement Automatic exposure control by spot measurement Automatic exposure memory control Manual exposure control sensitivity Film advance Film rewind Viewtinder A GENERAL OUTLINE OLYMPUS OM SYSTEM OM 4 MDY 2 TTL auto exposure SLR camera 24 mm x 36 mm Olympus OM mount Electronically controlled focal plane shutter with horizontally travelling cloth curtain 1 to 1 2000 sec shutter speed 1 60 sec mechanical shutter speed contact synchronization at speed of 1 60 sec slower hot shoe with contac
5. ewfinder with dioptric correction 1 0 3 diopters with dioptric correcting lock mechanism interchangeable focusing screens microprism split image matter standardized 1 13 types Finder viewfield 97 of actual picture field jon 0 84X at infinity with 015 diop and 50 mm lens Viewfinder information Mirror Self timer Battery check Power source Camera back Dimensions Weight LCD multi mode display built in illuminator 10 sec limiter Ingication limiter 120 sec Suitable shutter speeds 1 1 2000 sec indicated by a bar in 1 2 EV steps Luminance of photographic body indicated by a dot and calculated value indicated by bar in spot light measurement mode Indication marks SPOT HILIGHT and SHADOW Mark indication on red LED upon completing flash charging Suitable strobe flashing indicated by flickering of red LED in flash mode Over and under exposure indicated by OVER and UNDER marks Definite point matching and set shutter speed indicated in manual exposure mode MEMO mark indicated upon setting and MEMO mark flickers upon completion in exposure memory mode Large quick return mirror coated with multi layer film 12 sec delay electronic self timer Zevel display with LED and alarm sound automatic lock with barteriesexhausted Two silver oxide batteries SR44 or alkaline manganese batteries 1844 Removable hinge type with memo holder interchangeable with Recordata Backs and 250 Film Back 136 W
6. ts for T series flash Spin connector for T series flash synchro socket JIS type Center weighted average light measurement switchable to spot measurement measuring spot at the microprism area of the finder screen spot metering selective in 3 modes multi spot mesturement highlight and shadow based methods Light measuring range OEV to 19 EV ISO ASA 100 50 mm 2171 4 TTL direct off the film ligat measuring with aperture preferred electronic shutter exposure control range about 1 min 1 2000 sec approx 5 EV 19 EV at ISO ASA 100 50 mm F1 4 normal temperature and humidity 2 EV exposure compensation TTL spot metering memory system AE lock exposure contro range about 4 min 1 2000 sec approx 0 19 EV at ISO ASA 100 50 mm F1 4 normal temperature and humidity multiple spot method highlight method and shadow based method selectable 22 EV exposure compensation Exposure value memory system 60 min limiter Automatic exposure value obtained by TTL direct light metering stored in average light measurement mode EE lock value obtained by spot light measurement stored 1 sec 1 2000 sec mechanical exposure time 1 60 sec contact syhchronized at speeds of 1 60 sec or slower ISO ASA 6 3200 Film advancer lever with 130 angle for one long or severa short strokes and pre advance angle 30 motor drive and winder usable Rewind crank motorized rewind with Motor Drive 2 possible Vi
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