Sony DSR-300 Service Manual page 241

(5) Press the ADVANCE button once to display Menu No.
604.
The display window (LCD) will display as follows.
Each time the ADVANCE button is pressed, Menu
Nos. are changed as follows.
600 → 601 → 603 → ... → 513 → 600 → 601 → ...
Each time the SHIFT button is pressed, Menu Nos. are
changed as follows.
600 → 513 → 509 → ... → 601 → 600 → 513 → ...
4. Press the RESET (MENU SET) button.
The display window (LCD) will display as follows.
5. Press the ADVANCE button to select "10."
(Each time the ADVANCE button is pressed, "oFF →
10 → 5 → 20 → oFF" is repeatedly displayed.)
6. Press the RESET (MENU SET) button.
"604" is displayed and the mode is set.
DSR-300/P(E)/V1 5-5