RH-128
Baseband Description and Troubleshooting
different battery sizes. The resistors are connected to the BSI pin inside the battery connector.
BSI= BATID
Charging Circuitry
Display and Keypad
The mobile terminal uses light-emitting diodes (LEDs) for liquid crystal display (LCD) and keypad
illumination. There are two white LEDs for the LCD and six LEDs for the keypad. KEYPAD_LED is
the signal used to drive keypad LEDs. LCD_BL_EN is the signal used to drive LCD LEDs. The
mobile terminal uses a color LCD. The interface uses a parallel bus to transfer the Command/ Data
between CBP and LCD.
COMPANY CONFIDENTIAL
Copyright © 2009 Nokia. All rights reserved.
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