GE CT-9800

GE MEDICAL SYSTEMS CT 9800 QUICK SYSTEM
Rev. 1 Direction 18000
6-3-14
3-4 Disk System Adjustments (Continued)
b. At the terminal, command the heads to seek the alignment cylinder. The following assumes the
command string interpreter of ZDKP RELI is still running from the Servo Null adjustment.
UNIT: ’CR’
DATA: ’CR’
COMMAND
STRING: REC, SEE 760 ’CR’
c. Verify the heads are positioned over cylinder 760
8
by comparing the waveform on CH#1 to
Illustration 6-3-4. If the waveform is “nowhere close”, try reading another head (see Step 2d). If
all the heads are “nowhere close”, there is a problem in the drive or servo alignment.