Removal of Top and Base Covers Removal of Base Cover Cautions: There are possibilities that the sprocket lower A button may be undone because the adhesives applied to it lose resistance to separation, so that be sure not to miss iL Removal of Top Cover 1. Peel off the W lever leather {147660}, 2. Remove the W lever $8 {66001037), and take off the W.lever {147651} and the lever mount (147652). Cautions: The W lever SS is of the left-handed screw. 3.
5. Remove the rewind knob says {086920}, Cautions: Use the root of the tweezers but not the screw driver for removing the rewind shaft fork. 6. Take off the top cover nut {on the rewind side} (147659); as a result, the rewind shaft cover {147681} will be removed, 7. Remove two pieces of top cover 83° {61915523} {2) and {81808020} {1}, respectively; four pieces in total. 8. Gently separate the top cover ass'y {066920) from the body.
Removal of AMP Says Gray 1. Remove the solder of each lead wire. ray 2. Remove 2 AMP substrates 58 (61012524), 3. Remove the solder of & legs of LED. Purple Purple Removal of Mirror Box Ass’y 1. Remove 4 body mount S8 {131177} and body mount (147821), Cautions: {1} The standard position when assembling: At the back cover of the mount ring, the insulating collar (132489) Is made to agree with the red mark put on the mount cover.
Faults that may occur Setting failure: The stop levers do not plunge into the arms. {Due to short setting, or moving failure of the stop levers.) In this event, viewing from the film side, the rear sector returns (ascends) when the winding lever returns.
Operation of Bulb {1} When the speed change gear is set at B, the convex of B lever is set 10 the concave of B cam below the gear. {2} When depressing the release button, B lever descends and is set to the concave of B cam as in the case of {1} the lever descends lower than other shutter speeds. The low speed governor gear is locked at the upper side of B lever, {3} The mirror box works, the shutter is released, the drive cam rotates, and it spats when hitting against the coupling plate.
Adjustment of Shutter Adjustment of shutter speed The drive spring engages with the drive spring Drive spring base base; yet its position is to be moved, However, the shutter speeds change in the same tendency from high speed down to low speed, For example, such defects as a second being over and 1/126 sec being under cannot be repaired.
Composition of Circuits The circuit composition consists of 4 components as shown in the left figure, {1} information , (2) Adjustment {Quantity of light) i {8 Output (4) iC {Control} : EC switch : Calculate and adjust information by IC; by using the result of which as output, information LED is driven.
Operation of Counter Phenomenon The firm counter does not advance when making the winding lever operate, and the latter half of the film counter slips. {It will advance while passing the back cover.} Cause Although the counter G-1 engages the counter gear, yet the former slips and does not advance because the counter release SP is soft that pushes the counter G-1, {in case the spring is deformed during installation.) .
Adjustment Ra2: The volume to determine the amount of change per EV of aperture and ASA. Making the voltage of Reg — V1 agree with 226%1mV, R3: This is to change the lighting width of LED, Fixed resistance is soldered to it, being selected in the range from ohms to ohms, Standard value: {1} + and green are lit, Abt, 0.8 EV (2) Only gran Ditto {3} Green and—are lit. Ditto The standard resistance is 8.
Winding Operation Phenomenon When gently returning the winding lever, it stops midway, and cannot return to the full, Cause Perform the winding until the winding lever engages the check anti-rewind claw, where the operation of the lever should be checked, In case the lever does not smoothly move: 1. The winding lever edges up to the projection due to an inclination of the top cover, 2. No upward and downward plays are found on the Winding feeding plate ass'y and. the winding lever base. 3.
Phenomenon When gently returning the winding lever, the winding shaft and the set cam fixer do not return all the way, so that the shutter cannot be released, Cause ® There is no upward or downward play in the winding stopper and the set cam, ® The holes of A-gear holder and the winding shaft holder into which the winding shaft is put do not agree with each other. ® There is no play. in thé winding shaft and A-gear base, and no allowance is provided for winding shaft. holder inclination of the shaft.
Phenomenon Concurrently with the winding, the mirror moves up. “Cause .
Mirror Box Explanation of operation ® QR-Y (065201) is set with winding operation, ® QR-4 (147726) moves in the direction of arrow (up) by pressing the shutter release bunion, the tip of QR-2 1085202) is released, striking against QR-8 {139731}, and A-ML-2 {085212} is released, which causes A-ML-3 {085213} to move, springing up the mirror plate by means of ML-4 {066214}.
Phenomenon Concurrently with winding up, the mirror moves upward, Cause " Because of an inclination of the stake for QR-2 metal and QR-2, the engagement of QR-2 with QRL~4 is insufficient 50 that the former is apt to be released from the latter, QR-4 23 OR-2 Re paring technique and confirming method » if due to the engagement of QR-2 with QR-4 being insufficient, they cannot be sat, a little bend the tip of QR-2 such that it engages ORL by 2/3 of the thickness of the latter, Note: As OR-2 is hardened, do no
Phenomenon When pressing the shutter button, the mirror moves up and the shutter is released, but the mirror fails to descend, Cause Her the shutter is released, the rear curtain runs and presses ML-S, actuating QR-S and releasing QR-1, then causing the mirror to descend, However, if the clearance between ML-8 and QR-G is fare, and tha installing position of the shutter is too high, the amount of press is short so that the mirror fails to return, | Repairing technique and confirming method ® Check the clear
Repairing technique and confirming method ® The normal clearance between ML-6 and M pin-2 When ML-6 touches M pin-2, a little open only the touching part of ML-6, and when the clearance is "is not uniform with respect to up and down pairs, a little twist ML-6 to make the clearance uniform, ® if there are burrs on M pin-2, scrape them first of all, # When the clearance between M pin-2 and ML-6 increases, the mirror may be released due to shock, etc, so that the clearance should Faults that may occur The mirr
Phenomenon When reversing the camera, releasing the shutter, or roving the mirror by hand, the mirror fails to-return all the way, Cause ML Is bent, and a washer is put in between M IK -— frame and ML-6.
Phenomenon Move the mirror upward by hand and return it gently, and then the mirror is caught midway. Cause: * Up and down plays of ML-3 are remarkable, ® Twisting of MCL due to crimping.
Operation of Counter Time of change: Af the beginning of March 1980, New indication: The last digit, A, is changed to B, {Indication of lot} Example: (CB B8C8 Interchangeability of parts; Counter base says is replaceable, but singles such as Counter Counter clamp {147871} : Counter gear {147865} are not interchangeable, Counter SP (147867) & Counter base says Arr't No. 066830 .
Description of Mechanism ® Push in the counter release lever {147868) by closing the back cover, and closely attach the gear {1} {138887] to the counter gear {147865), # With one turn of the gear {1) made by once winding up, one tooth of the counter gear is fed by use of the notch of the head.
Phenomena When the counter counts 36 frames or less and then the back cover is opened, the counter is not reset, Cause 1, When forcibly tightening the counter G-1 before it completely enters the hole in case the counter base is installed, burrs are produced, so that malfunction of the counter G-1 is caused, 2. The counter release SP 8 clamped by the counter base SS with the result that malfunction of SP is caused, 3.