Nokia 6610i Service Manual

Page of 58
CCS Technical Documentation
7-System Module and User Interface
                                 
Company confidential 
RM-37
Issue 1  04/2004
  ©Nokia Corporation.
Page 55
User Interface Modules
UI module consist of a separate 4-layer UI PWB TK8 for RM-37. 
The User Interface features a 130 x 130 8bpp (bits per pixel) passive matrix color STN 
display, 4096 colours. Interface is using 9-bit data transfer. 
The LCD display is connected to transceiver PWB by board-to-board connector.
The diagram below describes the user interface connections.
Figure 24: 
UI Board TK8
TK8 includes contacts for the keypad domes and LEDs for keypad illumination. UI board is 
connected to main PWB through 16 pole board-to-board connector with springs. Signals 
of the connector are described in  External and Internal Signals and Connections.
Keyboard
5x4 matrix keyboard is used in RM-37. Key pressing is detected by scanning procedure. 
Keypad signals are connected UPP keyboard interface.
LCD 
BASEBAND
 
IR 
IHF 
Keyboard 
TOMAHAWK 
System Connector 
Vibra