10ConfigurationLeft(counter-clockwise)Level decreasesRight(clockwise)Level increasesInitial SettingThe Jog Dial can be used for the display contrast and the volume control. Rotate the JogDial in either direction as desired. The contrast or the volume level will change as follows.Display Contrast AdjustmentThe MODE button and the Jog Dial for KX-T7431 users, and a Soft button and the Jog Dialfor KX-T7433 and KX-T7436 users are used to adjust the display contrast. The contrastlevel is indicated on the display by the number.– KX-T7431While on-hook1. Press the MODE button six times.• The display shows:(— contrast volume level 3)2. Rotate the Jog Dial in the desired direction.– KX-T7433 and KX-T7436While 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 a headsetThe Panasonic Digital Super Hybrid System supports the use of a headset with a proprietarytelephone (PT). When you use a headset (optional), you should switch the selection modefirst. Selection is explained in the “Handset/Headset Selection” in Initial Settings (Section 2in the KX-TD208 Operating Instructions).To change to the headset modePress: [PROGRAM] [9] [9] [8] [2] [STORE] [PROGRAM].Contrast: 3Contrast: 312MODE12S 1 S 2 S 3CONT