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Nokia N81 Service Manual

Nokia N81
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Flash LED construction
Figure 52 Mechanical construction of the flash LED module
Analysing image quality
Possible faults in image quality
When checking for possible errors in the flash functionality, knowing what error is suspected, significantly
helps the testing by narrowing down the number of possible test cases. The following types of image quality
problems may be expected to appear:
LED module is not flashing at all
Image colours are not good
Flash power is weak
Testing flash module functionality
Context
With the help of this test you can check the flash module's overall functionality.
Always set the flash to FORCED FLASH mode when performing the test. The FORCED FLASH mode enforces the
LED module to flash, even if there is some ambient light present.
Steps
1. Take an image with the flash and monitor at same time whether the LED module flashes.
RM-179; RM-223
Camera Module Troubleshooting
Page 5 –18 COMPANY CONFIDENTIAL Issue 1
Copyright © 2007 Nokia. All rights reserved.

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Nokia N81 Specifications

General IconGeneral
Display diagonal2.4 \
Display resolution240 x 320 pixels
Display number of colors16.78 million colors
Ringer typePolyphonic
Internal memory8196 MB
Front camera typeSingle camera
Rear camera resolution1600 x 1200 pixels
Personal info management (PIM)Alarm clock, Calculator, Calendar, Notes, To-do list
Headphone connectivity3.5 mm
USB 2.0 ports quantity1
Text prediction system typeT9
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 factorSlider
Product colorBrown
Gaming time6 h
Browsing time5 h
Talk time (2G)4 h
Talk time (3G)3 h
Battery capacity1050 mAh
Standby time (2G)1020 h
Continuous audio playback time11.5 h
Continuous video playback time4.5 h
2G standardsGPRS
Data networkwcdma
Bluetooth version2.0+EDR
Bluetooth profilesA2DP, BIP, DUN, FTP, GAP, GOEP, HFP, HSP, OPP, SPP
SIM card capabilitySingle SIM
Weight and Dimensions IconWeight and Dimensions
Depth102 mm
Width50 mm
Height17.9 mm
Weight140 g

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