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Disassembling Pentax PZ-1p Shutter Unit

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  1. Disassembling Pentax PZ-1p Shutter Unit, Remove bottom cover: step 1, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove bottom cover: step 1, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove bottom cover: step 1, image 3 of 3
    • Unlatch battery compartment door.

    • Remove one 1.7 x 4.0 mm screw.

    • Remove six 1.7 x 2.5 mm shoulder screws.

    • Remove one 1.7 x 2.5 mm long shoulder screw.

    • The bottom cover may be adhered with double sided tape in some locations. Use a spudger to gently work it loose.

  2. Disassembling Pentax PZ-1p Shutter Unit, Installation Notes: Bottom cover: step 2, image 1 of 1
    • Check that the physical panorama switch on the bottom cover and the electrical switch mate properly.

  3. Disassembling Pentax PZ-1p Shutter Unit, Remove flash cover: step 3, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove flash cover: step 3, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove flash cover: step 3, image 3 of 3
    • Push button to pop up the flash.

    • Remove two 1.7 x 2.5 mm screws.

    • Detach snaps by lifting the side of the flash cover, bending it up and away from the housing.

    • Push flash back down to the stored position.

  4. Disassembling Pentax PZ-1p Shutter Unit, Remove top cover screws: step 4, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove top cover screws: step 4, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove top cover screws: step 4, image 3 of 3
    • Remove two 1.7 x 2.5 mm screws underneath the pop-up flash.

    • Remove one 1.7 x 2.5 mm panhead screw above the pop-up flash.

    • Remove two 1.7 x 2.5 mm shoulder screws near the eye piece.

  5. Disassembling Pentax PZ-1p Shutter Unit, Remove top cover: step 5, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove top cover: step 5, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove top cover: step 5, image 3 of 3
    • Remove two 1.7 x 2.5 mm shoulder screws by the strap lugs.

    • Remove one 1.7 x 6.0 mm screw inside the battery compartment.

    • Lift off the top cover.

  6. Disassembling Pentax PZ-1p Shutter Unit, Installation Notes: Top cover: step 6, image 1 of 1
    • Check that the physical power switch and the electrical power switch are both in the same position before installation.

  7. Disassembling Pentax PZ-1p Shutter Unit, Remove film door: step 7, image 1 of 1
    • Push the release latch down to remove the film door.

  8. Disassembling Pentax PZ-1p Shutter Unit, Remove front body panel: step 8, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove front body panel: step 8, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove front body panel: step 8, image 3 of 3
    • Peel off rubber covering from grip.

    • Remove one 1.7 x 5.0 mm screw.

    • Lift off the front body panel.

  9. Disassembling Pentax PZ-1p Shutter Unit, Discharge flash capacitor: step 9, image 1 of 1
    • Connect a 10 kOhm high power resistor across the terminals of the flash capacitor for several seconds.

    • Proceeding with the repair without discharging the flash capacitor could result in shock to the repairer or the camera components.

  10. Disassembling Pentax PZ-1p Shutter Unit, Remove hot shoe: step 10, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove hot shoe: step 10, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove hot shoe: step 10, image 3 of 3
    • Remove the hot shoe spring. Lift the front of the spring and slide it towards the back of the camera.

    • Remove four M1.7 x 6.5 mm screws from the hot shoe.

    • Remove black, brown, green, and blue wires from plastic guides.

    • Lift off the hot show mount.

  11. Disassembling Pentax PZ-1p Shutter Unit, Remove command dial contact: step 11, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Remove command dial contact: step 11, image 2 of 2
    • Unsolder the black, green and yellow wires for the command dial contacts.

    • Remove one 1.7 x 4.5 mm screw.

    • Lift off command dial contact.

  12. Disassembling Pentax PZ-1p Shutter Unit, Unsolder flash relay PCB: step 12, image 1 of 1
    • Unsolder the blue and green wires.

    • Unsolder the blue, green, brown and black wires from the flash relay PCB.

  13. Disassembling Pentax PZ-1p Shutter Unit, Unsolder flex PCB: step 13, image 1 of 1
    • Unsolder three pads.

    • Unsolder three flex connections.

    • Unsolder two through-hole connections.

  14. Disassembling Pentax PZ-1p Shutter Unit, Remove retaining screws: step 14, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove retaining screws: step 14, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove retaining screws: step 14, image 3 of 3
    • Remove one M1.7 x 2.5 mm screw.

    • Remove flex clamp and rubber pad.

    • Remove one M1.7 x 3.5 mm screw.

    • Remove one 1.7 x 3.5 mm screw.

  15. Disassembling Pentax PZ-1p Shutter Unit, Remove retaining screws: step 15, image 1 of 1
    • Remove one M1.7 x 2.5 mm screw.

    • Remove flex clamp and rubber pad.

    • Remove two M1.7 x 2.5 mm screws.

    • Remove one 1.7 x 2.5 mm screw.

    • Unsolder one blue wire.

  16. Disassembling Pentax PZ-1p Shutter Unit, Remove LCD Flex PCB: step 16, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove LCD Flex PCB: step 16, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove LCD Flex PCB: step 16, image 3 of 3
    • Remove rubber dome pads for ME an IF buttons.

    • Detach button contacts from housing.

    • Push shutter release button up to free it from its retention post.

    • Detach snaps under the LCD frame.

    • Gently lift off LCD flex PCB.

  17. Disassembling Pentax PZ-1p Shutter Unit, Remove eye piece: step 17, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Remove eye piece: step 17, image 2 of 2
    • Remove two 1.7 x 7.0 mm screws.

    • Remove the eye piece.

  18. Disassembling Pentax PZ-1p Shutter Unit, Remove base plates: step 18, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Remove base plates: step 18, image 2 of 2
    • Remove three 1.7 x 3.5 mm screws.

    • Remove one 1.7 x 3.5 mm screw.

    • Remove both base plates.

    • Installation Notes: Make sure to attach the ground wire at this location when installing the plate.

  19. Disassembling Pentax PZ-1p Shutter Unit, Unsolder main PCB wires: step 19, image 1 of 1
    • Unsolder the red and black wires to the battery contacts.

    • Unsolder the blue and brown wires.

    • Unsolder the red and black wires to the charging motor.

  20. Disassembling Pentax PZ-1p Shutter Unit, Unsolder main PCB wires: step 20, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Unsolder main PCB wires: step 20, image 2 of 2
    • Unsolder the red and black wires for the film advance motor.

    • Unsolder one green wire.

    • Unsolder two through-hole connections for the charge block contact.

    • Remove one 1.7 x 3.0 mm screw.

  21. Disassembling Pentax PZ-1p Shutter Unit, Unsolder main PCB wires: step 21, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Unsolder main PCB wires: step 21, image 2 of 2
    • Unsolder one brown wire from the AF spot beam.

    • Unsolder two flex connections.

    • Unsolder the red and black wires for the buzzer.

  22. Disassembling Pentax PZ-1p Shutter Unit, Unsolder main PCB wires: step 22, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Unsolder main PCB wires: step 22, image 2 of 2
    • Unsolder the purple, green and brown wires for the aperture resistor.

    • Unsolder the red and yellow wires for the self-timer LED.

    • Unsolder the red and black wires for the TTL flash meter.

  23. Disassembling Pentax PZ-1p Shutter Unit, Unsolder shutter unit connections: step 23, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Unsolder shutter unit connections: step 23, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Unsolder shutter unit connections: step 23, image 3 of 3
    • Unsolder five flex connections for the shutter unit flex cable.

    • Unsolder the white, black, and orange wires for aperture control unit.

    • Peal the shutter flex cable away from the main PCB. Apply isopropyl alcohol to loosen double-sided tape where necessary.

  24. Disassembling Pentax PZ-1p Shutter Unit, Unsolder DX reader connections: step 24, image 1 of 1
    • Unsolder all connections to the DX code reader pins.

  25. Disassembling Pentax PZ-1p Shutter Unit, Remove panorama switch: step 25, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Remove panorama switch: step 25, image 2 of 2
    • Unsolder two flex connections for the panorama switch.

    • Remove panorama switch.

  26. Disassembling Pentax PZ-1p Shutter Unit, Unsolder main PCB wires: step 26, image 1 of 1
    • Unsolder the blue and brown wires to the aperture control solenoid.

    • Unsolder the red and black wires to the AF motor.

    • Unsolder the white, pink and green wires to the AF motor unit.

  27. Disassembling Pentax PZ-1p Shutter Unit, Unsolder main PCB wires: step 27, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Unsolder main PCB wires: step 27, image 2 of 2
    • Unsolder five flex connections to the film door contacts.

    • Unsolder the black, orange, and gray wires for the AF motor unit.

    • Unsolder the orange, gray and yellow wires for the mirror release solenoid.

    • Unsolder three flex connections to the sprocket counter PCB.

  28. Disassembling Pentax PZ-1p Shutter Unit, Disconnect flex cables to main PCB: step 28, image 1 of 1
    • Remove two M1.7 x 2.5 mm screws.

    • Remove two flex cable clamps and rubber pads.

    • Remove one M2.0 x 4.0 mm screw.

  29. Disassembling Pentax PZ-1p Shutter Unit, Detach metering cell PCB: step 29, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Detach metering cell PCB: step 29, image 2 of 2
    • Remove one F1.7 x 3.0 mm screw.

    • Use tweezers to pull off one brass clip from the end of the adjustment post.

    • Installation Notes: Consult page 32 of the Z1 service manual to adjust the precise position of the metering cell. This should be done before the LCD flex PCB is installed.

  30. Disassembling Pentax PZ-1p Shutter Unit, Remove main flex PCB: step 30, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove main flex PCB: step 30, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove main flex PCB: step 30, image 3 of 3
    • Begin by freeing the PCB from the bottom of the camera.

    • Work up and around the top.

    • Carefully work free the section between the grip and the lens mount.

    • Watch for areas where the flex may catch.

    • Slowly lift the entire PCB away from the camera looking for snags and wires that may still be connected.

  31. Disassembling Pentax PZ-1p Shutter Unit, Remove flash block: step 31, image 1 of 1
    • Remove two M1.7 x 4.0 mm screws.

    • Lift off flash block.

  32. Disassembling Pentax PZ-1p Shutter Unit, Remove rewind gearing plate: step 32, image 1 of 1
    • Remove one M2.0 screw.

    • Remove two E2.0 x 4.5 mm screws.

    • Remove rewind gearing plate.

  33. Disassembling Pentax PZ-1p Shutter Unit, Unscrew front housing block: step 33, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Unscrew front housing block: step 33, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Unscrew front housing block: step 33, image 3 of 3
    • Remove one screw.

    • Remove two screws.

    • Remove four E2.0 x 4.0 mm screws.

  34. Disassembling Pentax PZ-1p Shutter Unit: step 34, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit: step 34, image 2 of 2
    • Gently pull the front housing block away from the main camera chassis.

    • Check for shim washers. Remove if loose and note their positions.

  35. Disassembling Pentax PZ-1p Shutter Unit, Installation Notes: Front Housing Block: step 35, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Installation Notes: Front Housing Block: step 35, image 2 of 2
    • Charge the mirror box by pushing this lever forward until it catches. The mirror should be in the lower/viewing position.

    • Position the white aperture release lever to the right.

  36. Disassembling Pentax PZ-1p Shutter Unit, Mirror box operation: step 36, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Mirror box operation: step 36, image 2 of 2
    • Push this lever to the right to release the mirror. It should flip up into the taking position.

    • Push this lever forward to charge the mirror and return it to the lower/viewing position.

  37. Disassembling Pentax PZ-1p Shutter Unit, Remove shutter charge block: step 37, image 1 of 1
    • Remove one D1.7 x 6.0 mm screw.

    • Remove one D1.7 x 5.0 mm screw.

  38. Disassembling Pentax PZ-1p Shutter Unit, Installation Notes: Shutter Charge Block: step 38, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Installation Notes: Shutter Charge Block: step 38, image 2 of 2
    • Turn the indicated gear to the right.

    • Keep turning until the mirror charge lever is up, or towards the rear of the camera.

    • The shutter charge lever should sit to the right as well.

    • Make sure that the shutter charge lever on the charge block is to the right of the lever on the shutter unit when installed.

  39. Disassembling Pentax PZ-1p Shutter Unit, Loosen the film advance mechanism: step 39, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Loosen the film advance mechanism: step 39, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Loosen the film advance mechanism: step 39, image 3 of 3
    • Remove two D1.7 x 7.5 mm screws.

    • Remove one D1.7 x 5.0 mm screw.

    • Push the charging motor down a few millimeters. This will allow access to one of the shutter unit screws while avoiding more significant disassembly.

    • Installation Notes: The sprocket in the film chamber may fall out when the film advance mech is pushed out. Make sure it is put back in place when reinstalling.

  40. Disassembling Pentax PZ-1p Shutter Unit, Unscrew shutter unit: step 40, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Unscrew shutter unit: step 40, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Unscrew shutter unit: step 40, image 3 of 3
    • Detach the shutter flex cable from the camera chassis. Use isopropyl alcohol to loosen the adhesive if necessary.

    • Remove three D2.0 x 4.0 mm screws.

    • Remove the shutter unit.

    • Replace the foam light seal on the right hand side if necessary.

  41. Disassembling Pentax PZ-1p Shutter Unit, Remove back plate: step 41, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove back plate: step 41, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove back plate: step 41, image 3 of 3
    • Discharge the shutter before beginning disassembly with the shutter release lever.

    • Remove two screws.

    • Move the panorama lever so the blinds are in the frame.

    • Push the back plate to the left...

    • Moving the two posts into the larger opening of the key holes.

    • Lift off the back plate.

  42. Disassembling Pentax PZ-1p Shutter Unit, Remove first curtain guide: step 42, image 1 of 2 Disassembling Pentax PZ-1p Shutter Unit, Remove first curtain guide: step 42, image 2 of 2
    • The opening curtain may come free from this post when removing the back plate. Remount it before proceeding.

    • Remove closing curtain helper spring.

    • Remove rubber damper.

    • Remove curtain guide.

    • Remove spacer bushing.

  43. Disassembling Pentax PZ-1p Shutter Unit, Remove opening curtain: step 43, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove opening curtain: step 43, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove opening curtain: step 43, image 3 of 3
    • Unmount the opening curtain from the driving post. The curtain will want to move to the top of the frame.

    • Unmount the opening curtain from the pivot.

    • Continue rotating the curtain until the blades are collapsed and completely vertical.

    • Lift the opening curtain from the last post. Look for the helper spring underneath.

    • Installation Notes: Install the curtain in the same manner but reversed. Make sure the helper spring gets properly attached on the edge of the curtain arm as shown.

  44. Disassembling Pentax PZ-1p Shutter Unit, Remove curtain separator: step 44, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove curtain separator: step 44, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove curtain separator: step 44, image 3 of 3
    • Remove curtain separator.

    • Remove spacer bushing.

    • Remove curtain guide.

  45. Disassembling Pentax PZ-1p Shutter Unit, Remove closing curtain: step 45, image 1 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove closing curtain: step 45, image 2 of 3 Disassembling Pentax PZ-1p Shutter Unit, Remove closing curtain: step 45, image 3 of 3
    • Remove spacer bushing.

    • Remove opening curtain helper spring.

    • Remove closing curtain.

    • Remove curtain guide.

    • Installation Notes: When installing the opening curtain helper spring, make sure the straight leg is underneath the flange on the post.

  46. Disassembling Pentax PZ-1p Shutter Unit, Clean the shutter: step 46, image 1 of 1
    • Clean curtain pivots with isopropyl alchohol.

    • Clean any residue from the shutter frame and back plate.

    • Clean the curtains where they interface with the pivots.

Conclusion

To reassemble your device, follow these instructions in reverse order.

Sam Gustafson

Member since: 09/01/22

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