8.1 TEST CONDITIONS Tests should be conducted under the following conditions : Ambient temperature : 25 ± 5°C Humidity : 60 ± 25% RH. 8.2 SAMPLING PLAN Sampling method shall be in accordance with MIL-STD-105E , level II, normal single sampling plan . 8.3 ACCEPTABLE QUALITY LEVEL A major defect is defined as one that could cause failure to or materially reduce the usability of the unit for its intended purpose. A minor defect is one that does not materially reduce the usability of the unit for its intended purpose or is an infringement from established standards and has no significant bearing on its effective use or operation. 8.4 APPEARANCE An appearance test should be conducted by human sight at approximately 30 cm distance from the LCD module under flourescent light. The inspection area of LCD panel shall be within the range of following limits.