Disassembling Pentax PZ-1p Shutter Unit

ID: 194348

Description:

Steps:

1. Unlatch battery compartment door.
2. Remove one 1.7 x 4.0 mm screw.
3. Remove six 1.7 x 2.5 mm shoulder screws.
4. Remove one 1.7 x 2.5 mm long shoulder screw.
5. The bottom cover may be adhered with double sided tape in some locations. Use a spudger to gently work it loose.

6. Check that the physical panorama switch on the bottom cover and the electrical switch mate properly.

7. Push button to pop up the flash.
8. Remove two 1.7 x 2.5 mm screws.
9. Detach snaps by lifting the side of the flash cover, bending it up and away from the housing.
10. Push flash back down to the stored position.

11. Remove two 1.7 x 2.5 mm screws underneath the pop-up flash.
12. Remove one 1.7 x 2.5 mm panhead screw above the pop-up flash.
13. Remove two 1.7 x 2.5 mm shoulder screws near the eye piece.

14. Remove two 1.7 x 2.5 mm shoulder screws by the strap lugs.
15. Remove one 1.7 x 6.0 mm screw inside the battery compartment.
16. Lift off the top cover.

17. Check that the physical power switch and the electrical power switch are both in the same position before installation.

18. Push the release latch down to remove the film door.

19. Peel off rubber covering from grip.
20. Remove one 1.7 x 5.0 mm screw.
21. Lift off the front body panel.

22. Connect a 10 kOhm high power resistor across the terminals of the flash capacitor for several seconds.
23. Proceeding with the repair without discharging the flash capacitor could result in shock to the repairer or the camera components.

24. Remove the hot shoe spring. Lift the front of the spring and slide it towards the back of the camera.
25. Remove four M1.7 x 6.5 mm screws from the hot shoe.
26. Remove black, brown, green, and blue wires from plastic guides.
27. Lift off the hot show mount.

28. Unsolder the black, green and yellow wires for the command dial contacts.
29. Remove one 1.7 x 4.5 mm screw.
30. Lift off command dial contact.

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

33. Unsolder three pads.
34. Unsolder three flex connections.
35. Unsolder two through-hole connections.

36. Remove one M1.7 x 2.5 mm screw.
37. Remove flex clamp and rubber pad.
38. Remove one M1.7 x 3.5 mm screw.
39. Remove one 1.7 x 3.5 mm screw.

40. Remove one M1.7 x 2.5 mm screw.
41. Remove flex clamp and rubber pad.
42. Remove two M1.7 x 2.5 mm screws.
43. Remove one 1.7 x 2.5 mm screw.
44. Unsolder one blue wire.

45. Remove rubber dome pads for ME an IF buttons.
46. Detach button contacts from housing.
47. Push shutter release button up to free it from its retention post.
48. Detach snaps under the LCD frame.
49. Gently lift off LCD flex PCB.

50. Remove two 1.7 x 7.0 mm screws.
51. Remove the eye piece.

52. Remove three 1.7 x 3.5 mm screws.
53. Remove one 1.7 x 3.5 mm screw.
54. Remove both base plates.
55. Installation Notes: Make sure to attach the ground wire at this location when installing the plate.

56. Unsolder the red and black wires to the battery contacts.
57. Unsolder the blue and brown wires.
58. Unsolder the red and black wires to the charging motor.

59. Unsolder the red and black wires for the film advance motor.
60. Unsolder one green wire.
61. Unsolder two through-hole connections for the charge block contact.
62. Remove one 1.7 x 3.0 mm screw.

63. Unsolder one brown wire from the AF spot beam.
64. Unsolder two flex connections.
65. Unsolder the red and black wires for the buzzer.

66. Unsolder the purple, green and brown wires for the aperture resistor.
67. Unsolder the red and yellow wires for the self-timer LED.
68. Unsolder the red and black wires for the TTL flash meter.

69. Unsolder five flex connections for the shutter unit flex cable.
70. Unsolder the white, black, and orange wires for aperture control unit.
71. Peal the shutter flex cable away from the main PCB. Apply isopropyl alcohol to loosen double-sided tape where necessary.

72. Unsolder all connections to the DX code reader pins.

73. Unsolder two flex connections for the panorama switch.
74. Remove panorama switch.

75. Unsolder the blue and brown wires to the aperture control solenoid.
76. Unsolder the red and black wires to the AF motor.
77. Unsolder the white, pink and green wires to the AF motor unit.

78. Unsolder five flex connections to the film door contacts.
79. Unsolder the black, orange, and gray wires for the AF motor unit.
80. Unsolder the orange, gray and yellow wires for the mirror release solenoid.
81. Unsolder three flex connections to the sprocket counter PCB.

82. Remove two M1.7 x 2.5 mm screws.
83. Remove two flex cable clamps and rubber pads.
84. Remove one M2.0 x 4.0 mm screw.

85. Remove one F1.7 x 3.0 mm screw.
86. Use tweezers to pull off one brass clip from the end of the adjustment post.
87. 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.

88. Begin by freeing the PCB from the bottom of the camera.
89. Work up and around the top.
90. Carefully work free the section between the grip and the lens mount.
91. Watch for areas where the flex may catch.
92. Slowly lift the entire PCB away from the camera looking for snags and wires that may still be connected.

93. Remove two M1.7 x 4.0 mm screws.
94. Lift off flash block.

95. Remove one M2.0 screw.
96. Remove two E2.0 x 4.5 mm screws.
97. Remove rewind gearing plate.

98. Remove one screw.
99. Remove two screws.
100. Remove four E2.0 x 4.0 mm screws.

101. Gently pull the front housing block away from the main camera chassis.
102. Check for shim washers. Remove if loose and note their positions.

103. Charge the mirror box by pushing this lever forward until it catches. The mirror should be in the lower/viewing position.
104. Position the white aperture release lever to the right.

105. Push this lever to the right to release the mirror. It should flip up into the taking position.
106. Push this lever forward to charge the mirror and return it to the lower/viewing position.

107. Remove one D1.7 x 6.0 mm screw.
108. Remove one D1.7 x 5.0 mm screw.

109. Turn the indicated gear to the right.
110. Keep turning until the mirror charge lever is up, or towards the rear of the camera.
111. The shutter charge lever should sit to the right as well.
112. Make sure that the shutter charge lever on the charge block is to the right of the lever on the shutter unit when installed.

113. Remove two D1.7 x 7.5 mm screws.
114. Remove one D1.7 x 5.0 mm screw.
115. Push the charging motor down a few millimeters. This will allow access to one of the shutter unit screws while avoiding more significant disassembly.
116. 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.

117. Detach the shutter flex cable from the camera chassis. Use isopropyl alcohol to loosen the adhesive if necessary.
118. Remove three D2.0 x 4.0 mm screws.
119. Remove the shutter unit.
120. Replace the foam light seal on the right hand side if necessary.

121. Discharge the shutter before beginning disassembly with the shutter release lever.
122. Remove two screws.
123. Move the panorama lever so the blinds are in the frame.
124. Push the back plate to the left...
125. Moving the two posts into the larger opening of the key holes.
126. Lift off the back plate.

127. The opening curtain may come free from this post when removing the back plate. Remount it before proceeding.
128. Remove closing curtain helper spring.
129. Remove rubber damper.
130. Remove curtain guide.
131. Remove spacer bushing.

132. Unmount the opening curtain from the driving post. The curtain will want to move to the top of the frame.
133. Unmount the opening curtain from the pivot.
134. Continue rotating the curtain until the blades are collapsed and completely vertical.
135. Lift the opening curtain from the last post. Look for the helper spring underneath.
136. 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.

137. Remove curtain separator.
138. Remove spacer bushing.
139. Remove curtain guide.

140. Remove spacer bushing.
141. Remove opening curtain helper spring.
142. Remove closing curtain.
143. Remove curtain guide.
144. Installation Notes: When installing the opening curtain helper spring, make sure the straight leg is underneath the flange on the post.

145. Clean curtain pivots with isopropyl alchohol.
146. Clean any residue from the shutter frame and back plate.
147. Clean the curtains where they interface with the pivots.