Pioneer PDP503CMX/MXE Manufacturer: Pioneer Model: PDP503CMX/MXE Chassis: Type: Plasma Activate Service Mode: With power off, press MENU, then POWER, on the remote, within 3 seconds. Select Adjustment Item: Press the SET button (stores data and advances to next item). Select Category: Press the UP/DN buttons to select WHITE BALANCE mode. Change Data: Press the VOL+/- buttons. Recover Memory Values: Write to Memory: Exit Service Mode: Press the MENU button. Read New Values: