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INTRODUCTION

This user guide User Guide will help thin section Thin Section technicians start up and check the flatness of the Logitech LP50. For more information refer to the Logitech Thin Rock Section Production manual, available in the Thin Section Lab both on a Logitech thumb drive in the bookcase and computer under the "Manual" folder on the desktop. Or,  Also refer to Operation and Maintenance of the LP50 Lapping and Polishing Machine manual, located in the black binder in the Thin Section Lab bookcase labeled "LP50, PM5 and Associated Equipment".

PROCEDURE

LOGITECH LP50 START UP

1. Press the Main button (Fig. 1) under the joystick (make sure the Vacuum button stays off).

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     4.  Process Screen and Machine Setup (Fig. 4) screen will appear.

Figure 4

ZEROING MONITOR

1. Clean the monitor's bottom surface and diamond edges with water and a soft brush. Make sure no water gets inside the top half. Blow it dry with the air gun.
2. Clean the master flat (Fig. 5) by wiping it down with a kimwipe and isopropyl alcohol.
3. Place monitor on the master flat then set the weight on top of it (Fig. 5).
4. Plug in long cord to the top of the monitor and LP 50 just under the slurry container (Fig. 4).
5. Move the monitor around on the Master flat to let it 'bed down' to the surface.

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              f.  It will return back to the Process Screen and Machine Setup (Fig. 4) screen.

LP50 MONITOR AND ARM POSITION SET UP

1. On the Process Screen and Machine Setup screen (Fig. 4) move the joystick up and select Process Screen. Press ok.
2. On the Confirm Action screen (Fig. 8) move the joystick down, select and press OK.

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              e. On the Please Set Jig Positions screen (Fig. 9) select and press OK.

CHECKING LAPPING PLATE FLATNESS

1. On the Operating screen (Fig.12), move the joystick up and to the right. Select Abrasive and press ok.

Figure 12

     2.  On the Abrasive screen (Fig. 13), select Abrasive Drum and rotate the joystick clockwise to change it from OFF to ON

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1. 1. If screen is left untouched for four seconds it will revert back to the Operating screen (Fig. 12). Just reselect the previous screen and press ok.

     3. On the   Abrasive screen (Fig. 13), move the joystick down and select Override. Press ok to change it from an X to a checkmark.

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     4.  Move the joystick down and select and press OK.

     5.  On the Operating screen (Fig. 12), move the joystick up and select Set Time. Press ok.

     6. On the   Timer screen (Fig. 14)

          If screen is left untouched for four seconds it will revert back to the Operating screen (Fig. 12). Just reselect the previous screen and press ok.

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1. 1. Move joystick up and select Timer rotate clockwise to change "Disable" to "Enable".
   2. Move the joystick down to select Rest Timer and press ok.
   3. Move the joystick down to select Set Time rotate clockwise to increase time and counterclockwise to decrease time.
      1. Set Time to 15 minutes
   4. Move the joystick down to select and press OK.

     7. On the Operating screen (Fig. 12), move the joystick down and left and select Plate. Press ok.

     8. On the Plate screen (Fig. 13), select Target Plate Speed.

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            c. Move the joystick down to select OK. Press ok.

     9. On the   Operating screen (Fig. 12), move the joystick down and to the left to select Start. Press ok.

     10. The lapping plate will begin to rotate.

     11. On the Operating screen (Fig. 12), move the joystick up and select Plate. Press ok.

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     12. The test block and monitor should rotate counterclockwise. If it does not right away, it just may take a couple of minutes to adjust to the plate flatness. Then they will begin to rotate.

     13. On the Operation screen (Fig. 12), the Actual Flatness should stay within plus or minus 5 um and the Target Flatness should stay at 0 um.

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          b. Wipe down the drip tray and turn off the drip monitor.

MEASURING THE TEST BLOCK

1. Take the weight off the test block and set it down. Put the test block upside down on top of the weight (Fig. 19).
2. Clean the test block off with isopropyl alcohol and a kimwipe.
   1. If it is not cleaned right away it will begin to rust.
   2. Keep cleaning until NO more abrasive comes off the surface of the face of the block. When all the abrasive is off the kimwipe will be clean after wiping it.
3. Gently, Clean the master flat and Logitech micrometer scale support rim and spindle tips (Fig. 17) using a kimwipe and isopropyl alcohol.

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