Nokia 6250 服务手册

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页码 22
PAMS Technical Documentation
Disassembly Instructions
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Thick covers of durable plastic
Internal cushioning of the circuit board
Dust and water resistance membranes over the microphone, speaker 
and buzzer
Ultrasonic welding of display window and keymat to front cover
Watertight RF-connector and system connector
Watertight sealing between covers
Thick display with extra firm circuit board mounting
Shock-deterrent design details:
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External bumpers
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Dust and water resistance membranes over the microphone, speaker 
and buzzer
Display window and keymat are ultrasonically welded to front cover
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Watertight sealing of cover
Watertight RF-connector 
Embedded infrared window
Vibra  Frame
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