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Pentax ZX-5n Mirror Drive Lever Replacement

Qué necesitas

  1. Pentax ZX-5n Mirror Drive Lever Replacement, Remove back cover: paso 1, imagen 1 de 1
    • Push down on the screw to depress the spring loaded hinge and release the door.

  2. Pentax ZX-5n Mirror Drive Lever Replacement, Remove bottom cover: paso 2, imagen 1 de 1
    • Remove six 5.3 mm #00 screws.

    • Remove one 3.4 mm #00 screw.

    • The short screw has a machine thread and screws into the plate underneath. The rest screw into the plastic body.

  3. Pentax ZX-5n Mirror Drive Lever Replacement, Remove left front cover: paso 3, imagen 1 de 1
    • Remove three 5.3 mm #00 screws (the bottom-most screw is not always present).

    • Remove one 7.3 mm #00 screw.

    • Remove the remote trigger cover.

  4. Pentax ZX-5n Mirror Drive Lever Replacement, Remove front cover: paso 4, imagen 1 de 2 Pentax ZX-5n Mirror Drive Lever Replacement, Remove front cover: paso 4, imagen 2 de 2
    • Remove one 3.4 mm #00 screw.

    • Remove two 5.3 mm #00 screw.

    • Gently lift up on the flash housing to help remove the cover if necessary.

  5. Pentax ZX-5n Mirror Drive Lever Replacement, Remove right front cover: paso 5, imagen 1 de 1
    • Remove two 3.9 mm #00 screws.

  6. Pentax ZX-5n Mirror Drive Lever Replacement, Remove eye cup: paso 6, imagen 1 de 1
    • Slide the eye cup up and off to access the screws underneath.

  7. Pentax ZX-5n Mirror Drive Lever Replacement, Unscrew top cover: paso 7, imagen 1 de 3 Pentax ZX-5n Mirror Drive Lever Replacement, Unscrew top cover: paso 7, imagen 2 de 3 Pentax ZX-5n Mirror Drive Lever Replacement, Unscrew top cover: paso 7, imagen 3 de 3
    • Remove two 5.3 mm #00 screws by the eyepiece.

    • Remove one 6.8 mm #00 screw in the battery compartment.

    • Remove one 7.0 mm #00 screw near the take up spool.

  8. Pentax ZX-5n Mirror Drive Lever Replacement, Lift top cover: paso 8, imagen 1 de 1
    • Lift the cover so it is just free of the body. It is still attached by several wires.

  9. Pentax ZX-5n Mirror Drive Lever Replacement, Discharge flash capacitors: paso 9, imagen 1 de 1
    • Use a 1kΩ-10kΩ 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.

  10. Pentax ZX-5n Mirror Drive Lever Replacement, Release top cover: paso 10, imagen 1 de 1
    • De-solder the green, blue, brown and black wires from the flash PCB.

  11. Pentax ZX-5n Mirror Drive Lever Replacement, De-solder battery connections: paso 11, imagen 1 de 3 Pentax ZX-5n Mirror Drive Lever Replacement, De-solder battery connections: paso 11, imagen 2 de 3 Pentax ZX-5n Mirror Drive Lever Replacement, De-solder battery connections: paso 11, imagen 3 de 3
    • Move the top cover to the side to access the battery connections. It is still connected by a flex cable.

    • De-solder the indicated joints. Use a solder sucker on the tabbed connections.

    • Pull the black wire from the battery flex to get more slack in the connection to the top cover.

    • Be careful not to overheat the flex circuit. Work in short durations. Allow for cool downs in between if necessary.

  12. Pentax ZX-5n Mirror Drive Lever Replacement, Desolder flex cable: paso 12, imagen 1 de 1
    • Desolder the flex cable connecting the top plate to the camera body.

    • Be careful not to overheat the flex circuit. Work in short durations. Allow for cool downs in between if necessary.

    • The top cover can be completely removed at this point.

  13. Pentax ZX-5n Mirror Drive Lever Replacement, De-solder flex posts: paso 13, imagen 1 de 1
    • Use a solder sucker to de-solder the four posts from the flex circuit.

    • This is the most difficult part of the repair. Patience and persistence are required.

    • Be careful not to overheat the flex circuit. Work in short durations. Allow for cool downs in between if necessary.

  14. Pentax ZX-5n Mirror Drive Lever Replacement, De-solder flex connections: paso 14, imagen 1 de 1
    • De-solder the marked connections.

    • Be careful not to overheat the flex circuit. Work in short durations. Allow for cool downs in between if necessary.

  15. Pentax ZX-5n Mirror Drive Lever Replacement, Unscrew flex circuit: paso 15, imagen 1 de 1
    • Remove one 4.3 mm #00 screw.

  16. Pentax ZX-5n Mirror Drive Lever Replacement, Lift the flex circuit: paso 16, imagen 1 de 2 Pentax ZX-5n Mirror Drive Lever Replacement, Lift the flex circuit: paso 16, imagen 2 de 2
    • Gently pry up the plastic carrier under the flex circuit. It may catch slightly on the battery contact tab.

    • Pay close attention to the connections around the four through-hole posts as you lift the flex. Make sure that no solder is left over and that it pulls away freely.

    • This metal tab is lightly held in place with lacquer and can easily come loose. Keep an eye on it.

  17. Pentax ZX-5n Mirror Drive Lever Replacement, Unscrew flash PCB: paso 17, imagen 1 de 1
    • Remove one 3.3mm #00 screw.

    • Remove one 3.9 #00 screw.

    • De-solder the red wire.

    • Peel off the black tape. Leave it attached to the wires.

  18. Pentax ZX-5n Mirror Drive Lever Replacement, Remove flash PCB and capacitors: paso 18, imagen 1 de 2 Pentax ZX-5n Mirror Drive Lever Replacement, Remove flash PCB and capacitors: paso 18, imagen 2 de 2
    • Gently peel the flex circuit from the surface of the capacitor.

    • There may be additional adhesive underneath the larger capacitor.

    • Lift the two capacitors and the flash PCB out as a single unit.

    • The double sided tape used to secure the capacitors can be softened with isopropyl alcohol if necessary.

  19. Pentax ZX-5n Mirror Drive Lever Replacement, Prepare bottom plate: paso 19, imagen 1 de 2 Pentax ZX-5n Mirror Drive Lever Replacement, Prepare bottom plate: paso 19, imagen 2 de 2
    • Remove two 3.4 mm #00 screws. Remove the plate holding the contacts in place.

    • Peel tape from the plate. Leave the tape attached to the flex circuit.

    • Remove the flex circuits from their retaining studs.

  20. Pentax ZX-5n Mirror Drive Lever Replacement, Remove bottom plate: paso 20, imagen 1 de 2 Pentax ZX-5n Mirror Drive Lever Replacement, Remove bottom plate: paso 20, imagen 2 de 2
    • Remove one 3.3 mm #0 countersunk screw.

    • Remove one 3.9 mm #0 shoulder screw.

    • Remove four 3.3 mm #00 screws.

    • Pull a little slack through the housing on this flex cable.

    • Pop the plate off its posts, rotate slightly clockwise and pull gently through the loosened flex cable.

    • To the camera tech that left me a happy little note...I see you.

  21. Pentax ZX-5n Mirror Drive Lever Replacement, Remove loose parts: paso 21, imagen 1 de 2 Pentax ZX-5n Mirror Drive Lever Replacement, Remove loose parts: paso 21, imagen 2 de 2
    • It's best to remove these parts now so they don't fall out later on in the repair.

  22. Pentax ZX-5n Mirror Drive Lever Replacement, Detach DOF preview switch: paso 22, imagen 1 de 1
    • Remove one 3.8 mm #00 screw.

  23. Pentax ZX-5n Mirror Drive Lever Replacement, De-solder shutter control flex: paso 23, imagen 1 de 2 Pentax ZX-5n Mirror Drive Lever Replacement, De-solder shutter control flex: paso 23, imagen 2 de 2
    • De-solder the connections.

    • Lift the flex off the retaining studs.

    • Be careful not to overheat the flex circuit. Work in short durations. Allow for cool downs in between if necessary.

  24. Pentax ZX-5n Mirror Drive Lever Replacement, Remove eye piece assembly: paso 24, imagen 1 de 1
    • Remove two 5.3 mm #0 screws.

  25. Pentax ZX-5n Mirror Drive Lever Replacement, Unscrew front housing block: paso 25, imagen 1 de 2 Pentax ZX-5n Mirror Drive Lever Replacement, Unscrew front housing block: paso 25, imagen 2 de 2
    • Remove two 7.4 mm #0 screws.

    • Remove one 8.3 mm #0 screw.

    • Remove one 3.3 mm #00 screw. The metal bracket will be loose and should be removed as well.

  26. Pentax ZX-5n Mirror Drive Lever Replacement, Lift front housing block: paso 26, imagen 1 de 1
    • Push the front housing block slightly up then lift the left side up and away from the housing.

    • Proceed slowly and watch for any components that are catching. The right side is still attached by a large flex cable.

  27. Pentax ZX-5n Mirror Drive Lever Replacement, Check for shims: paso 27, imagen 1 de 1
    • There may be shims at the mounting points of the front housing block.

    • Note the positions and remove if loose.

  28. Pentax ZX-5n Mirror Drive Lever Replacement, Detach mirror motor assembly: paso 28, imagen 1 de 2 Pentax ZX-5n Mirror Drive Lever Replacement, Detach mirror motor assembly: paso 28, imagen 2 de 2
    • De-solder the black wire.

    • Remove four 3.7 mm #00 screws.

    • Detach the buzzer from its mounting posts. Use isopropyl alcohol to soften the lacquer if necessary.

  29. Pentax ZX-5n Mirror Drive Lever Replacement, Remove mirror motor assembly: paso 29, imagen 1 de 1
    • Grab the motor and gently wiggle the plate loose.

    • If it feels stuck, move the sliding plate down, towards the bottom of the camera

  30. Pentax ZX-5n Mirror Drive Lever Replacement, Remove drive gears: paso 30, imagen 1 de 1
    • Slide the green and yellow gears off of their shafts.

  31. Pentax ZX-5n Mirror Drive Lever Replacement, Remove broken mirror drive lever: paso 31, imagen 1 de 1
    • The broken part. If the small tip is completely detached, locate it and remove it from the camera before reassembly.

    • Place a finger over the larger spring to keep it in place as you slide off the lever.

  32. Pentax ZX-5n Mirror Drive Lever Replacement, Install new mirror drive lever: paso 32, imagen 1 de 2 Pentax ZX-5n Mirror Drive Lever Replacement, Install new mirror drive lever: paso 32, imagen 2 de 2
    • Use tweezers to place the spring arm on the lower side of the post and tension the lever.

    • Place the long spring arm on the left side of the mirror pivot.

    • Check proper function of the mirror by moving the bottom arm of the lever back and forth. The mirror should rest in the upper position but be able to move up and down.

    • If using a 3D printed replacement part, remove the tensioning spring and temporarily install the green gear Turn it counterclockwise through the entire mirror cycle. There should be no binding of the gear at any point. Adjust the drive lever as necessary until it moves through the entire cycle without resistance.

  33. Pentax ZX-5n Mirror Drive Lever Replacement, Install green and yellow drive gears: paso 33, imagen 1 de 1
    • When placing the gears, line up the two indicated holes. The gears must be in sync for the shutter and mirror to work properly.

    • Turn them back and forth a few degrees to make sure they are fully seated.

    • Aperture set lever spring. Note this part for installation of the mirror motor assembly.

  34. Pentax ZX-5n Mirror Drive Lever Replacement, Prepare mirror motor assembly for install: paso 34, imagen 1 de 2 Pentax ZX-5n Mirror Drive Lever Replacement, Prepare mirror motor assembly for install: paso 34, imagen 2 de 2
    • Disengage latch so the slide bar can move freely.

    • Move the slide bar about half way down its total travel.

    • Let the latch snap back into place so the slide bar is held in the new position.

    • This ensures that the aperture set lever spring couples properly with the slide bar during reassembly.

  35. Pentax ZX-5n Mirror Drive Lever Replacement, Install mirror motor assembly: paso 35, imagen 1 de 1
    • Place the left side first. Then swing the right side in, coming up and under the spring loaded lens release.

  36. Pentax ZX-5n Mirror Drive Lever Replacement, Charge mirror: paso 36, imagen 1 de 1
    • Rotate the grey gear downward until the mirror is in the charged/down position.

  37. Pentax ZX-5n Mirror Drive Lever Replacement, Charge shutter: paso 37, imagen 1 de 2 Pentax ZX-5n Mirror Drive Lever Replacement, Charge shutter: paso 37, imagen 2 de 2
    • Push the shutter charge lever upward. You should see the shutter blades move as you do this.

    • The second picture shows the shutter in the charged position. It may already be in this position and not need charging.

    • Gently place the front assembly block. Work it into place until the back of the block is flush to the back of camera.

    • Proceed with the rest of the re-assembly, following the guide in reverse.

Conclusión

To reassemble your device, follow these instructions in reverse order. Pay attention to the wire routing as you re-solder connections. They need to be in the correct places to install the body covers.

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Sam Gustafson

Miembro Desde 09/01/22

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