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Pentax MZ-S Mirror Drive Lever Replacement

Wat je nodig hebt

  1. Pentax MZ-S Mirror Drive Lever Replacement, Remove film door: stap 1, afbeelding 1 van 1
    • Push down the latch to release the film door.

  2. Pentax MZ-S Mirror Drive Lever Replacement, Remove top cover screws: stap 2, afbeelding 1 van 3 Pentax MZ-S Mirror Drive Lever Replacement, Remove top cover screws: stap 2, afbeelding 2 van 3 Pentax MZ-S Mirror Drive Lever Replacement, Remove top cover screws: stap 2, afbeelding 3 van 3
    • Remove two 7.5 mm #00 screws.

    • Remove one 9.0 mm #00 screw.

    • Remove one 13.5 mm #00 screw from inside the battery compartment.

  3. Pentax MZ-S Mirror Drive Lever Replacement, Remove top cover screws: stap 3, afbeelding 1 van 3 Pentax MZ-S Mirror Drive Lever Replacement, Remove top cover screws: stap 3, afbeelding 2 van 3 Pentax MZ-S Mirror Drive Lever Replacement, Remove top cover screws: stap 3, afbeelding 3 van 3
    • Push the button to pop up the flash.

    • Remove one 3.5 mm #00 screw.

    • Remove one 5.5 mm #00 screw.

  4. Pentax MZ-S Mirror Drive Lever Replacement, Lift top cover: stap 4, afbeelding 1 van 1
    • Carefully lift the top cover away from the body to access wired connections.

    • The top cover is still connected in several locations.

  5. Pentax MZ-S Mirror Drive Lever Replacement, Access flash connections: stap 5, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Access flash connections: stap 5, afbeelding 2 van 2
    • Peel back the corner of the rubber grip.

    • Remove the small plastic cover.

    • Be careful not to short the wires before the flash capacitors have been properly discharged.

  6. Pentax MZ-S Mirror Drive Lever Replacement, Discharge flash capacitors: stap 6, afbeelding 1 van 1
    • Use a 1kΩ-10kΩ high power resistor to discharge the capacitor. Place the resistor between the blue wire, exposed in the previous step, and ground.

    • The flash capacitors store energy at a very high voltage. Failing to discharge the capacitors properly could result in personal injury and/or damage to the camera.

  7. Pentax MZ-S Mirror Drive Lever Replacement, Disconnect right flex cable: stap 7, afbeelding 1 van 1
    • Carefully lift the sides of the white latch.

    • Hold the flex PCB on the camera body in place as you lift to prevent damaging the flex.

  8. Pentax MZ-S Mirror Drive Lever Replacement, Disconnect left flex cable: stap 8, afbeelding 1 van 1
    • Desolder the red wire.

    • Carefully lift the sides of the white latch.

    • Hold the flex PCB on the camera body in place as you lift to prevent damaging the flex.

  9. Pentax MZ-S Mirror Drive Lever Replacement, Desolder flash connections: stap 9, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Desolder flash connections: stap 9, afbeelding 2 van 2
    • Desolder blue, black, brown and green wires.

    • Remove the loose shim washer if present.

  10. Pentax MZ-S Mirror Drive Lever Replacement, Desolder the flash flex cable: stap 10, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Desolder the flash flex cable: stap 10, afbeelding 2 van 2
    • Remove the piece of cellophane tape covering the flex connections.

    • Desolder flex connetions.

  11. Pentax MZ-S Mirror Drive Lever Replacement, Remove bottom cover: stap 11, afbeelding 1 van 3 Pentax MZ-S Mirror Drive Lever Replacement, Remove bottom cover: stap 11, afbeelding 2 van 3 Pentax MZ-S Mirror Drive Lever Replacement, Remove bottom cover: stap 11, afbeelding 3 van 3
    • Use isopropyl alcohol to soften the adhesive under the country plate and remove.

    • Remove one 5mm #00 screw.

    • Remove one 7.5mm #00 screw.

    • Remove two 4.5mm #00 screws.

    • Remove one 5.5mm #00 screw.

    • Remove the plastic frame around the accessory grip contacts.

  12. Pentax MZ-S Mirror Drive Lever Replacement, Remove front left cover: stap 12, afbeelding 1 van 1
    • Remove one 4.0 mm #00 screw.

    • Remove left cover.

  13. Pentax MZ-S Mirror Drive Lever Replacement, Remove front cover: stap 13, afbeelding 1 van 1
    • Remove front cover.

  14. Pentax MZ-S Mirror Drive Lever Replacement, Unscrew front right cover: stap 14, afbeelding 1 van 3 Pentax MZ-S Mirror Drive Lever Replacement, Unscrew front right cover: stap 14, afbeelding 2 van 3 Pentax MZ-S Mirror Drive Lever Replacement, Unscrew front right cover: stap 14, afbeelding 3 van 3
    • Remove one 6.0 mm #00 screw.

    • Remove two 3.5 mm #00 screws.

    • Remove one 5.0 mm #00 screw.

    • Remove the strap lug.

  15. Pentax MZ-S Mirror Drive Lever Replacement, Remove the front right cover: stap 15, afbeelding 1 van 1
    • Carefully pull the right panel away from the body. It is still attached.

    • Desolder the flex connections.

  16. Pentax MZ-S Mirror Drive Lever Replacement, Remove bottom plate: stap 16, afbeelding 1 van 3 Pentax MZ-S Mirror Drive Lever Replacement, Remove bottom plate: stap 16, afbeelding 2 van 3 Pentax MZ-S Mirror Drive Lever Replacement, Remove bottom plate: stap 16, afbeelding 3 van 3
    • Remove the protective mask around the accessory grip contacts.

    • Lift the flex contacts free of their retaining posts. Use isopropyl alcohol to soften any glue or tape that is present.

    • Remove four 4.0 mm #00 screws.

    • Remove four 4.0 mm #00 screws.

  17. Pentax MZ-S Mirror Drive Lever Replacement, Desolder speaker: stap 17, afbeelding 1 van 1
    • Desolder the black and red wires for the speaker.

  18. Pentax MZ-S Mirror Drive Lever Replacement, Desolder connections to bottom flex circuit: stap 18, afbeelding 1 van 3 Pentax MZ-S Mirror Drive Lever Replacement, Desolder connections to bottom flex circuit: stap 18, afbeelding 2 van 3 Pentax MZ-S Mirror Drive Lever Replacement, Desolder connections to bottom flex circuit: stap 18, afbeelding 3 van 3
    • Desolder the white and pink wires.

    • Desolder the red, black and gray wires.

    • Desolder the red, black and orange wires.

    • Desolder the white and blue wires.

    • Carefully peal the tape away and detach the red, black, white and blue wires from the glue. Use isopropyl alcohol to soften the glue if necessary.

    • Desolder the flex connection.

    • Desolder the flex connection.

  19. Pentax MZ-S Mirror Drive Lever Replacement, Desolder connections to top flex circuit: stap 19, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Desolder connections to top flex circuit: stap 19, afbeelding 2 van 2
    • Desolder red, black, gray and orange wires.

    • Desolder flex contacts.

    • Disconnect flex connector.

  20. Pentax MZ-S Mirror Drive Lever Replacement, Desolder connections to top flex circuit: stap 20, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Desolder connections to top flex circuit: stap 20, afbeelding 2 van 2
    • Desolder black wire.

    • Desolder battery contact tab.

    • Desolder flex contacts.

    • Remove one 4.0 mm #00 screw.

  21. Pentax MZ-S Mirror Drive Lever Replacement, Desolder flex connection above the lens mount: stap 21, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Desolder flex connection above the lens mount: stap 21, afbeelding 2 van 2
    • Desolder flex connection and remove from retention posts. Use isopropyl alcohol to soften the glue if necessary.

    • Carefully peal the flex cable from the surface of the flash capacitor. Use isopropyl alcohol to soften the glue if necessary.

  22. Pentax MZ-S Mirror Drive Lever Replacement, Remove eye piece assembly: stap 22, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Remove eye piece assembly: stap 22, afbeelding 2 van 2
    • Remove two 5.0 mm #00 screws.

    • Remove the eye piece.

  23. Pentax MZ-S Mirror Drive Lever Replacement, Remove lens release switch: stap 23, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Remove lens release switch: stap 23, afbeelding 2 van 2
    • Remove one #00 screw.

    • Reassembly Note: Ensure that the lower contact catches on the plastic nub and that the contact is open when the lens release button is not pressed.

  24. Pentax MZ-S Mirror Drive Lever Replacement, Flip the mirror up: stap 24, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Flip the mirror up: stap 24, afbeelding 2 van 2
    • Apply a low DC voltage (3-6 V) to the mirror motor to move the mirror to the upper position.

    • The mirror box will not easily release from the camera body while the mirror is in the lower/charged position.

  25. Pentax MZ-S Mirror Drive Lever Replacement, Unscrew the mirror box: stap 25, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Unscrew the mirror box: stap 25, afbeelding 2 van 2
    • Remove two 6.5 mm #0 screws.

    • Remove one 8.0 mm #0 screw.

    • Remove one 4.0 mm #00 screw.

    • Remove one 4.5 mm #00 screw.

    • Remove two 2.5 mm #00 screws.

    • There may be a shim washer here. Remove if loose.

    • Remove one 4.0 mm #00 shoulder screw.

  26. Pentax MZ-S Mirror Drive Lever Replacement, Remove the mirror box: stap 26, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Remove the mirror box: stap 26, afbeelding 2 van 2
    • Push the mirror box up to free it from the bottom plate.

    • Lift the left side of the mirror box and rotate it up and out of the camera body.

    • Be gentle. Keep an eye out for any snagged flex cables or wires. The right side of the mirror box is still connected to the camera body and it cannot be completely removed.

    • Check for shim washers at the mount locations. Note location and remove if loose.

  27. Pentax MZ-S Mirror Drive Lever Replacement, Remove the mirror motor plate: stap 27, afbeelding 1 van 1
    • Desolder the black wire.

    • Remove one 3.0 mm #00 screw securing the mount LED.

    • Remove five 3.5 mm #00 screws.

  28. Pentax MZ-S Mirror Drive Lever Replacement, Remove mirror drive lever: stap 28, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Remove mirror drive lever: stap 28, afbeelding 2 van 2
    • Remove two drive gears from the mirror box.

    • Remove mirror drive lever. Place a finger over the spring to prevent it from shooting away.

  29. Pentax MZ-S Mirror Drive Lever Replacement, Install new mirror drive lever: stap 29, afbeelding 1 van 1
    • Transfer the two springs from the old drive lever to the new drive lever.

    • Install the new drive lever.

    • Check that all the bias springs are correctly tensioned against the indicated posts.

  30. Pentax MZ-S Mirror Drive Lever Replacement, Install drive gears: stap 30, afbeelding 1 van 1
    • Ensure that the indicated holes are aligned when installing the drive gears.

  31. Pentax MZ-S Mirror Drive Lever Replacement, Prepare mirror motor plate for install: stap 31, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Prepare mirror motor plate for install: stap 31, afbeelding 2 van 2
    • Slide the aperture actuator to the left.

    • Pinch the small lever downward and let it snap back into place.

    • The aperture actuator should be held in place on the left end of its travel if done correctly.

  32. Pentax MZ-S Mirror Drive Lever Replacement, Prepare mirror box assembly for install: stap 32, afbeelding 1 van 2 Pentax MZ-S Mirror Drive Lever Replacement, Prepare mirror box assembly for install: stap 32, afbeelding 2 van 2
    • Install mirror motor plate.

    • Turn the black gear downward until the mirror moves to the upper position.

    • Continue turning the black gear until this hole appears in the opening and the shutter charge lever moves to the right.

    • Make sure all wires and flex cables are in their proper place before beginning the install. Monitor carefully to avoid pinching things in the wrong place.

    • Apply a low DC voltage (3-6 V) to the mirror motor to check the operation of the mirror box. Normal movement in the shutter blades, aperture actuator and mirror should be observable.

Conclusie

To reassemble your device, follow these instructions in reverse order. Be careful to route wires and flex cables in the way that they were originally assembled.

Sam Gustafson

Lid sinds: 09/01/22

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