User Guide
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Table Of Contents
External Signals and Connections
Functional Description
Circuit Description
Main components on the DU8 module
Keyboard scanning and display driver control
Keyboard and display illumination
Audio Circuitry
LCD Module Interface
Power Distribution Diagram
Parts List DU8D_05
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T
echnical Documentation
NHD–4
Uif Module
P
AMS
Page 6–7
Original 1
1/97
Power Distribution Diagram
Figure 2.
Power Distribution
VBA
TT
VL1
VA
2
GND
Call
LED
KEY/LC
D
Lights
Buzzer
LCD
Keyboard
scan
Audio
AGND
VL5VOL
T
1
...
...
5
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7
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9
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