55--4422
Use the number buttons and enter 7.
As in <Fig. 5.4.4-5>, 7 is entered in No. 1, and the cursor moves to No. 2 for entry.
Repeat the above method and enter 3, 5, 1, 6, 4, 2, 1 in order by using the number buttons.
Make sure of the accurate setting and press .