Step 00
9662 - Navigate to SHOW COUNTS on SC-770 to verify gamma counts are...
Navigate to SHOW COUNTS on SC-770 to verify gamma counts are within normal range
9663 - Enter Program Mode by pressing "0" Press 01234#
Enter Program Mode by pressing "0"
Press 01234#
Then, press 2: GAMMA > 2: FUNCTIONS > 1:SHOW COUNTS