Nokia Mobile Phones NSE-5 Series Service Manual page 79

PAMS
Technical Documentation
LEDs
LEDs for the backlight of the LCD via the lightguide are mounted on the
back side of the module's FPC. There are 4 specially designed LEDs
placed with a chip in the upper part of the LED.
Figure 20.
Plastic Window
The window is mounted on top of the LCD module. It snaps into the
lightguide in three places. If a broken window needs replacing, it is
replaced together with the dust seal.
Dust Seal
The dust seal is made of foam with adhesive backing on both sides. It
keeps dust out of the LCD module and protects it from excessive pressure
on the window, if pressed too hard. The dust seal is mounted inside the
window and placed onto the LCD module. The window adhesive is high
tack. The LCD adhesive is low tack to ease replacement of the window.
LCD Adhesive
This is a thin strip of foil with adhesive on both sides, it keeps the LCD
module in place and protects it if the phone is dropped.
Reflector
The reflector is adhered to the underside of the lightguide to reflect the
backlight up to the viewing area. A thin adhesive border holds it in place
and also keeps out dust.
Issue 1 07/99
Mounting of LEDs for backlight. Seen from underside.
NSE–5
System Module
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