Μsd Card Interface; User Interface; Display Module; Keyboard - Nokia RM-579 Service Manual

RM-578; RM-579
System Module
µSD card interface
The µSD card is connected to the engine by an external level shifter and ESD protection filter. Supplied
voltages:
• VMMC: 2.85 V (from level shifter)
• VIO: 1.8 V (from AVILMA)
The card removal is detected by a push detect switch.

User interface

Display module

The interconnection between the LCD module and the engine is implemented with a 24-pin board-to-board
connector.
The LCD module does not require any tuning in service.

Keyboard

GENIO ROW
32 ROW0
33 ROW1
34 ROW2
35 ROW3
36 ROW4

Backlight and illumination

There is backlight illuminating for the display consisting of 2 LEDs.
The keypad is side lit by 2 LEDs with film lightguide.
Issue 3
Table 8 Key signal matrix
Col_0 Col_1
(GENIO-39) (GENIO-40)
Left SK Left
Send UP
1 4
2 5
3 6
COMPANY CONFIDENTIAL
Copyright © 2009 Nokia. All rights reserved.
Col_2 Col_3
(GENIO-41) (GENIO-42)
Right SK Right
Action Down
7 *
8 0
9 #
Page 5 –11