Nokia RM-333 Service Manual page 200

RM-333 has three separate keyboards:
• ITU keyboard
• Multimedia Keyboard
• S60 keyboard
ITU keyboard is visible when the slider is moved upwards. ITU keypads are located on the system/RF module.
System/RF module includes also side keys (volume keys, 2-position capture key and keylock switch) and MM
dome switches. MM keyboard is visible when the slider is moved downwards. S60 keys are located on UI/
slide module. They are connected as 3x4 key matrix to the Naviscroll driver which operates like I/O Expander.
More detailed description of S60 keyboard can be found in chapter
Expander's
PINS
Lines
KP-X0 ROW0
KP-X1 ROW1
KP-X2 ROW2
KP-X3 ROW3
KP-X4 ROW4
KP-X5 ROW5
Page 8 –20
Figure 74 I/O expander and keyboard matrix
Table 10 Keyboard matrix
KP-Y0 KP-Y1
COL0 COL1
1 6
5 9
3 0
* 7
MM1 MM2
Keylock
COMPANY CONFIDENTIAL
Copyright © 2008 Nokia. All rights reserved.
System Module and User Interface
Naviscroll technical description .
KP-Y2 KP-Y3
COL2 COL3
2 Vol Up
# Vol Down
Capture
8 half
Capture
4 full
MM3 MM4
RM-333; RM-334; RM-335
Issue 2