TECH TIPS PRODUCT: DVD Home Theater System TIP VERSION: DVD02-003 MODELS: HT-DL70D, HT-DL200P, HTDM150, HTDM550 SUBJECT: Dealer lock function SYMPTOM: Our DVD has a dealer lock function that locks access to the open/close and power function. REPAIR: Turn power on. Pressing and holding the “FUNCTION KEY” on the front panel for three seconds activates this function. If you press and hold the “FUNCTION KEY” for three seconds again, the dealer lock function will be released. REMARKS: Our “2002” line of DVD home theater systems models will all have this function.