211.1 ConfigurationInitial Settings for KX-T7400 SeriesThe Jog Dial can be used for the display contrast and the volume control. Rotate the Jog Dialin either direction as desired. The contrast or the volume level will change as follows.Display Contrast AdjustmentA Soft button and the Jog Dial for KX-T7433 and KX-T7436 users are used to adjust thedisplay contrast. The contrast level is indicated on the display by the number of asterisks.While on-hook or during a conversation1. Press the CONT (S1) button.2. Rotate the Jog Dial in the desired direction.• The display shows:(— contrast volume level 3)When using the headsetThe Panasonic Digital Super Hybrid System supports the use of a headset with a proprietarytelephone (PT). When you use the headset (optional), you should switch the selection modefirst. Selection is explained in the “Handset/Headset Selection” in Station Programming(Section 2).To change to the headset modePress: [PROGRAM] [9] [9] [9] [2] [STORE] [PROGRAM].Left(counter-clockwise)Level decreasesRight(clockwise)Level increasesContrast: 312S 1 S 2 S 3CONT