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Pentax Super Program Main PCB Removal

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  1. Pentax Super Program Main PCB Removal, Remove film advance lever: step 1, image 1 of 3 Pentax Super Program Main PCB Removal, Remove film advance lever: step 1, image 2 of 3 Pentax Super Program Main PCB Removal, Remove film advance lever: step 1, image 3 of 3

    • Remove the rubber decorative cap. It is attached with contact cement underneath. Isopropyl Alcohol may be used to soften the adhesive.

    • Unscrew the lock nut using a spanner wrench. The lock nut is reverse threaded.

    • Lift off the advance lever.

    • Remove the spring washer.

    • Remove one shim washer.

    Edit

  2. Pentax Super Program Main PCB Removal, Remove mode dial: step 2, image 1 of 2 Pentax Super Program Main PCB Removal, Remove mode dial: step 2, image 2 of 2

    • Set the mode dial to the 'L' position.

    • Use a spanner wrench to unscrew the dial lock nut.

    • Lift off the mode dial.

    Edit

  3. Pentax Super Program Main PCB Removal, Remove exposure compensation dial: step 3, image 1 of 3 Pentax Super Program Main PCB Removal, Remove exposure compensation dial: step 3, image 2 of 3 Pentax Super Program Main PCB Removal, Remove exposure compensation dial: step 3, image 3 of 3

    • Place a rigid object in the fork.

    • Unscrew the rewind lever.

    • Use a spanner wrench to remove the lock nut.

    • Lift off the exposure compensation dial.

    Edit

  4. Pentax Super Program Main PCB Removal, Remove top cover screws: step 4, image 1 of 3 Pentax Super Program Main PCB Removal, Remove top cover screws: step 4, image 2 of 3 Pentax Super Program Main PCB Removal, Remove top cover screws: step 4, image 3 of 3

    • Remove two screws on either side of the eye piece.

    • Remove two screws on either side of the lens mount.

    Edit

  5. Pentax Super Program Main PCB Removal, Remove top cover: step 5, image 1 of 3 Pentax Super Program Main PCB Removal, Remove top cover: step 5, image 2 of 3 Pentax Super Program Main PCB Removal, Remove top cover: step 5, image 3 of 3

    • Remove one screw by the exposure compensation dial.

    • Use a spanner wrench to remove the lock nut under the advance lever.

    • Lift off the top cover slowly. It is still attached by one wire.

    • Unsolder one gray flash sync wire.

    Edit

  6. Pentax Super Program Main PCB Removal, Remove bottom cover: step 6, image 1 of 1

    • Remove three M1.7 x 3 mm screws.

    • Remove bottom cover.

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  7. Pentax Super Program Main PCB Removal, Remove front leatherette panels: step 7, image 1 of 3 Pentax Super Program Main PCB Removal, Remove front leatherette panels: step 7, image 2 of 3 Pentax Super Program Main PCB Removal, Remove front leatherette panels: step 7, image 3 of 3

    • Use a nickel or other large coin to remove the hand grip.

    • Drip isopropyl alcohol along the edge of the leatherette to soften the adhesive.

    • Use a dull scraper to lift one corner and pull off the panel.

    • Repeat on the rewind side of the camera.

    • Installation Notes: Use contact cement to reattach the leatherette after the camera has been fully reassembled and tested.

    Edit

  8. Pentax Super Program Main PCB Removal, Detach flex PCB with adjustment pots: step 8, image 1 of 2 Pentax Super Program Main PCB Removal, Detach flex PCB with adjustment pots: step 8, image 2 of 2

    • Remove one M1.7 x 4.5 mm screw.

    • Remove one slotted screw.

    • Use isopropyl alcohol to soften the adhesive under the flex PCB.

    • Gently lift the PCB until it is free from the camera body.

    Edit

  9. Pentax Super Program Main PCB Removal, Unsolder motor drive connections: step 9, image 1 of 2 Pentax Super Program Main PCB Removal, Unsolder motor drive connections: step 9, image 2 of 2

    • Unsolder red wire for positive battery.

    • Unsolder green wire.

    • Unsolder orange wire for motor drive shutter release.

    • Unsolder purple wire for wind completion switch.

    Edit

  11. Pentax Super Program Main PCB Removal, Remove tripod mount: step 10, image 1 of 2 Pentax Super Program Main PCB Removal, Remove tripod mount: step 10, image 2 of 2

    • Remove one M1.7 x 4.5 mm screw.

    • Remove one M1.7 x 5 mm screw.

    • Remove one countersunk M1.7 x 5.5 mm screw.

    • Lift the contact terminal free from its seat.

    • Remove the tripod mount.

    Edit

  12. Pentax Super Program Main PCB Removal, Detach ISO resistor assembly: step 11, image 1 of 2 Pentax Super Program Main PCB Removal, Detach ISO resistor assembly: step 11, image 2 of 2

    • Remove one slotted screw.

    • Remove one M1.7 x 4 mm screw.

    • Loosen one slotted screw (this will remain connected to the assembly).

    • Lift the ISO resistor assembly off the rewind post. It is still attached by a flex PCB.

    Edit

  13. Pentax Super Program Main PCB Removal, Detach mode dial unit: step 12, image 1 of 3 Pentax Super Program Main PCB Removal, Detach mode dial unit: step 12, image 2 of 3 Pentax Super Program Main PCB Removal, Detach mode dial unit: step 12, image 3 of 3

    • Remove one M1.7 x 2.5 mm screw. It is only accessible when the mode dial is in the 'L' position.

    • Lift the LCD out of the way. It is still attached by a flex PCB.

    • Remove one M1.7 x 2.5 mm screw.

    • Remove one slotted post.

    Edit

  14. Pentax Super Program Main PCB Removal, Unsolder flash sync wires: step 13, image 1 of 1

    • Unsolder two gray wires.

    Edit

  15. Pentax Super Program Main PCB Removal, Unsolder shutter wires: step 14, image 1 of 2 Pentax Super Program Main PCB Removal, Unsolder shutter wires: step 14, image 2 of 2

    • Unsolder white wire.

    • Unsolder brown wire.

    • Unsolder red wire.

    Edit

  16. Pentax Super Program Main PCB Removal, Unscrew mirror box: step 15, image 1 of 2 Pentax Super Program Main PCB Removal, Unscrew mirror box: step 15, image 2 of 2

    • Remove two M1.7 x 2.5 mm screws.

    • Remove one M1.7 x 3.5 mm screw under the bottom plate.

    • Some versions of the camera may have an additional screw under the tripod mount that needs to be removed.

    Edit

  17. Pentax Super Program Main PCB Removal, Unscrew front board: step 16, image 1 of 2 Pentax Super Program Main PCB Removal, Unscrew front board: step 16, image 2 of 2

    • Wind the advance lever to put the shutter and mirror box in the charged state.

    • Remove four M1.9 x 5 mm screws.

    Edit

  18. Pentax Super Program Main PCB Removal, Remove mirror box and front board: step 17, image 1 of 1

    • Make sure the mode dial unit and ISO selector unit are free from their mounting points.

    • Wiggle the mirror box and front board free.

    • Watch for wire snags as you pull it free.

    • Check for loose shim washers on the front board and note their position.

    Edit

  19. Pentax Super Program Main PCB Removal, Installation Notes: Front Block: step 18, image 1 of 1

    • Shutter should be in the charged state.

    • Mirror box should be in released state.

    • Pay close attention to wire routing during install.

    • To test the actuation of the mirror and shutter, wind the camera, then insert a tool into this slot and push the release lever to the left.

    Edit

  20. Pentax Super Program Main PCB Removal, Unsolder Main PCB: step 19, image 1 of 1

    • Unsolder one orange and one blue wire for the mirror release solenoid.

    • Unsolder one pink wire for the LCD backlight.

    • Unsolder two purple wires for the TL switch.

    • Unsolder one green wire for the MD switch.

    Edit

  21. Pentax Super Program Main PCB Removal, Unsolder lens mount connections (early production): step 20, image 1 of 1

    • Unsolder six wires for the lens mount pin connections.

    • These are only present on the early production models. Later production models moved these connection points to the flex connector.

    Edit

  22. Pentax Super Program Main PCB Removal, Unsolder aperture resistor: step 21, image 1 of 2 Pentax Super Program Main PCB Removal, Unsolder aperture resistor: step 21, image 2 of 2

    • Unsolder two yellow wires for the aperture resistor.

    Edit

  23. Pentax Super Program Main PCB Removal, Unsolder eye piece: step 22, image 1 of 3 Pentax Super Program Main PCB Removal, Unsolder eye piece: step 22, image 2 of 3 Pentax Super Program Main PCB Removal, Unsolder eye piece: step 22, image 3 of 3

    • Unsolder the red and black wires for the metering cells in the eye piece.

    • Unsolder pink and green wires for the flash sync connections.

    Edit

  24. Pentax Super Program Main PCB Removal, Unsolder front board connections (early production): step 23, image 1 of 2 Pentax Super Program Main PCB Removal, Unsolder front board connections (early production): step 23, image 2 of 2

    • Unsolder blue and black wires for self-timer LED.

    • Unsolder orange wire for beeper.

    • Unsolder gray and pink wires for aperture solenoid.

    • Unsolder light blue and yellow wires for aperture optical encoder.

    • Unsolder purple wire for self-timer contact.

    • Remove one screw.

    Edit

  25. Pentax Super Program Main PCB Removal, Detach flex PCB connection (late production): step 24, image 1 of 2 Pentax Super Program Main PCB Removal, Detach flex PCB connection (late production): step 24, image 2 of 2

    • Remove two M1.4 x 2 mm screws.

    • Use a spudger to gently pry off the connector plate.

    • Remove the silicone insulating pad.

    Edit

  26. Pentax Super Program Main PCB Removal, Detach viewfinder LCD: step 25, image 1 of 1

    • Remove two M1.4 x 1.6 mm screws.

    • Look for shim washers when removing and note their position.

    Edit

  27. Pentax Super Program Main PCB Removal, Remove mirror governor: step 26, image 1 of 3 Pentax Super Program Main PCB Removal, Remove mirror governor: step 26, image 2 of 3 Pentax Super Program Main PCB Removal, Remove mirror governor: step 26, image 3 of 3

    • Remove one M1.7 x 4.5 mm screw.

    • Loosen one M1.7 x 4.5 mm screw but leave it in place.

    • Remove two M1.7 x 1.6 mm screws.

    • Remove the mirror governor.

    • Remove one plastic bushing.

    Edit

  28. Pentax Super Program Main PCB Removal, Remove main PCB: step 27, image 1 of 1

    • Gently lift away the PCB from the mirror box.

    • The TTL flash metering cell needs to be unseated from the side of the mirror box to free the PCB for removal.

    Edit
Conclusion

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

Author

with 1 other contributor

Sam Gustafson

Member since: 09/01/22

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