Sony CPD-1730 Operating Instructions (primary manual) - Page 11

When the 19th condition is stored If you attempt to store a 19th set of adjustment items, it will replace the first set of user-stored adjustment items. If you modify the condition for the preset-type models It also will be stored in memory. When called back from memory, priority is given to the modified condition. When the stored conditions are cleared, the factory-preset conditions return. Resetting Every User-Stored Condition to Factory-Preset Condition Method You can clear every user-stored condition at once. Clear the user-stored condition when you want to erase unnecessary conditions from memory and store only the necessary conditions again. Turn off the power and turn it on again while pressing the SELECT -4 and ► buttons simultaneously. When every condition is cleared The 5 indicators light up at the same time. The rotation, O (contrast) and 0. (brightness) also return to their factory-preset conditions. 11