67
Slide Scanner Repair Manual
Calibration and Adjustments
Magnification Adjustment
Note: To check magnification, measure the delta time between the single vertical lines between
each set of line pairs of the waveform signal. Use the dual time delay function of the
oscilloscope. See Figure 3-9.
There should be 1000 +/- 10 pixels between lines 2 & 5. The slide scanner
operates at 0.5 microseconds per pixel. The specified limit for magnification is 1.0%.
Example - To calculate magnification for 1005 pixels:
Magnification = Number of pixels times the slide scanner speed = 1005 x 0.5 usec = 502.5 usec
1. Loosen the two (2) screws that secures the optical block assembly (Figure 3-14) to the controller
PC board.
2. Loosen the two (2) screws that secures the lens block assembly to its bracket.
3. Slightly move the lens block assembly in or out.
4. Tighten the two (2) screws that secures the lens block assembly to its bracket.
5. Tighten the two (2) screws that secures the optical block assembly to the chassis
assembly.
6. Recheck focus as explained in the focus adjustment and then recheck magnification.
Note: Always recheck focus after each magnification adjustment.
7. Repeat steps 1 through 5 until magnification is equal to its specification:
500 = +\- 5.0 usec
Notes: • Actual time is a function of slight variations in lead screw pitch and clock
frequencies from unit lot-to-lot.
• LabVIEW Test will suggest relative correction in usec's for optimum
performance in it's test results. The result is listed as Best mag time change .
Summary of Contents for SprintScan SS35
Page 9: ...Slide Scanner Repair Manual Scanner Overview 9 1 Scanner Overview...
Page 31: ...Slide Scanner Repair Manual FunctionalDescription 31 2 Functional Description...
Page 50: ...50 Slide Scanner Repair Manual Calibration and Adjustments 3 Calibration and Adjustments...
Page 72: ...72 Slide Scanner Repair Manual Parts Replacement 4 Parts Replacement...
Page 96: ...96 SlideScannerRepairManual Diagnostics and Troubleshooting 5 Diagnostics and Troubleshooting...
Page 157: ...157 Slide Scanner Repair Manual System Diagrams 6 System Diagrams...
Page 159: ...159 Slide Scanner Repair Manual System Diagrams Power Supply Specification Sheet 1 of 4...
Page 160: ...160 Slide Scanner Repair Manual System Diagrams Power Supply Specification Sheet 2 of 4...
Page 161: ...161 Slide Scanner Repair Manual System Diagrams Power Supply Specification Sheet 3 of 4...
Page 162: ...162 Slide Scanner Repair Manual System Diagrams Power Supply Specification Sheet 4 of 4...
Page 163: ...163 Slide Scanner Repair Manual System Diagrams AC Inverter PC Board...
Page 164: ...164 Slide Scanner Repair Manual System Diagrams Image Sensor CCD PC Board Sheet 1 of 3...
Page 165: ...165 Slide Scanner Repair Manual System Diagrams Image Sensor CCD PC Board Sheet 2 of 3...
Page 166: ...166 Slide Scanner Repair Manual System Diagrams Image Sensor CCD PC Board Sheet 3 of 3...
Page 184: ...Slide Scanner Repair Manual Appendix 184 Appendix...