Nokia N81 Service Manual

Figure 70 ITUT keyboard and side key backlight
NaviWheel illumination (power LED)
The NaviWheel illumination has three LEDs in parallel and driven in two modes: S60 and Power-Save mode.
In S60 mode driving current is 15mA with gives 5mA per LED. It is activated whenever S60 LEDs of menu
keyboard are activated. In this mode dimming is not supported.
In order to save current and increase the standby time, the phone provides an extra power saving mode
where the display will be switched off after a certain time of user inactivity. A low frequently blinking
NAVIWheel will indicate, that the phone is still alive (no empty battery). In Power-Save mode driving current
is 6mA which will lead to 2mA per LED.
RM-179; RM-223
System Module and User Interface
Page 6 –30 COMPANY CONFIDENTIAL Issue 1
Copyright © 2007 Nokia. All rights reserved.

Nokia N81 Specifications

General

Display diagonal	2.4 \
Display resolution	240 x 320 pixels
Display number of colors	16.78 million colors
Ringer type	Polyphonic
Internal memory	8196 MB
Front camera type	Single camera
Rear camera resolution	1600 x 1200 pixels
Personal info management (PIM)	Alarm clock, Calculator, Calendar, Notes, To-do list
Headphone connectivity	3.5 mm
USB 2.0 ports quantity	1
Text prediction system type	T9
Multimedia Messaging Service (MMS)	Multimedia Messaging Service (MMS) is a standard way to send messages that include multimedia content to and from a mobile phone over a cellular network
Form factor	Slider
Product color	Brown
Gaming time	6 h
Browsing time	5 h
Talk time (2G)	4 h
Talk time (3G)	3 h
Battery capacity	1050 mAh
Standby time (2G)	1020 h
Continuous audio playback time	11.5 h
Continuous video playback time	4.5 h
2G standards	GPRS
Data network	wcdma
Bluetooth version	2.0+EDR
Bluetooth profiles	A2DP, BIP, DUN, FTP, GAP, GOEP, HFP, HSP, OPP, SPP
SIM card capability	Single SIM

Weight and Dimensions

Depth	102 mm
Width	50 mm
Height	17.9 mm
Weight	140 g