Here are our guides for Nokia 5 Series Phones:

Nokia 5100 Disassembly/Dismantle instructions: Pictorial guide with narrative on opening the phone.
Nokia 5110/5146 Opening/Disassembly Instructions: Guide with pictures on how to remove the LCD.
Nokia 5140/5140i Dismantle/Disassembly Guide: Good guide with pictures showing how to take apart the phone.
Nokia 5200 Disassmbly/Housing Change Guide: Guide to opening the phone and changing housing.
Nokia 5210 LED Change/Dismantle Guide: Germanic guide to changing the LED on the phone - with pictures.
Nokia 5230 Disassembly Guide Video: Very clear guide on how to change the housing and remove LCD.
Nokia 5300 Express Disassembly/Dismantle Guide: Good guide with pictures on taking the handset apart.
Nokia 5310 LCD Replacement/Disassembly Guide: Guide with photos illustrating the LCD change procedure.
Nokia 5510 Housing Change/Disassembly Guide: How to change the housing and dismantle the phone.
Nokia 5530 Disassembly/Dismantle Guide: Clear video on how to change housing and take apart handset.
Nokia 5800 ExpressMusic Dismantle/Disassembly Guide: Great step-by-step guide with additional video.