PDC 2000/3000 Repair Manual
Diagnostics and Troubleshooting
79
Guide 4-4. Image Quality (Cont’d)
Problem
Cause
Corrective Action
Poor Picture Quality: (Cont’d)
Underexposed
•
Defective Front End PC
•
Replace Front End PC board.
Picture (Cont’d)
board.
•
Shutter not functioning
•
Replace Optics Module
properly.
assembly.
Overexposed
•
Defective shutter.
•
Replace Optics Module
Picture
assembly.
•
Improperly calibrated.
•
Recalibrate using LabView.
•
Defective Front End PC
•
Replace Front End PC board.
board.
Half (1/2) Picture
•
Defective Front End
•
Replace Front End PC board.
(Rest of picture
PC board.
striped or no
image)
•
Poor connection between •
Reseat connection between
Hard Drive and Back End
Hard Drive and Back End
PC board.
PC board.
•
Defective Hard Drive.
•
Replace Hard Drive.
•
Damaged or disconnected •
Connect flex or replace
flex (CCD to Front End
Optics Module assembly.
PC board).
•
Defective CCD.
•
Replace Optics Module
assembly.
Spots or
•
Defective CCD.
•
Replace Optics Module
Vertical/Horizontal
assembly.
Lines on Picture