FujiFilm DR-ID 1300 Service Manual page 98

n Adjustment Procedures for the Grid Drive Timing
If the cause of the moiré is determined to be misalignment of the grid drive timing,
follow the procedures below:
(1) Register the following menu on the CL.
"QC test" - "Image format"
(2) Move the grid and make exposures with a dose of 1 mR.
The grid and the SE should be set on the exposure stand beforehand.
REFERENCE
Example of exposure conditions with a dose of 1 mR.
- Distance: 1.8 m
- Voltage: 80 kV
- Amperage: 50 mA
- Time: 0.013 msec
(3) Output a film in a single image format.
(4) Check if the moiré is observed on the output film.
If the moiré occurs although the X-ray irradiation time is suitable (longer than 10
msec), the cause of the problem is determined to be misalignment of the grid drive
timing.
(5) Report the situations to the service personnel of the X-ray equipment
to have timing delay adjusted by means of the exposure stand
trimmer.
Check to make sure that no moiré occurs on the output film.
CAUTION
Commission the service personnel of the X-ray equipment to make adjustment
of the grid drive timing.
REFERENCE
If the moiré occurs after the timing is adjusted by means of the exposure stand
trimmer, the cause might lie in some failure in the drive unit mechanism of the grid
mounted on the exposure stand.
018-234-06E DR-ID 1300 / DR-ID 1300PU Service Manual
MT-21
MT-21