User Interface (Ui); Display; Roller Key - Nokia NSW-5 Series Service Manual

NSW-5
System Module UT5U

User Interface (UI)

Radio module provides the connections for keymat, roller key, mic, buzzer
and display module. Slide sensor switch is placed in bottom connector.
Microphone lines in slide are connected to the PWB via contacts on
A–cover. Speaker is connected to display module.

Display

Display assembly (figure below) consists of LCD, flexfoil with power key
and pads for speaker and LEDs for back light, PWB connector, Plastic
lens with ESD shield and light guide parts which also hold the assembly
parts together.

Roller key

The roller is a state type encoder. It has 3 states, the contact arrange-
ment is shown in the following table, "x" marks a closed contact.
Position
1
2
3
Page 10
Contact A Contact B
x
x
x x
E Nokia Mobile Phones Ltd.
PAMS Technical Documentation
Contact C
x
x
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