Nokia NHL-2NA Series Troubleshooting Instructions page 5

CCS Technical Documentation
E-GSM900 .............................................................................................................. 44
GSM1800 ................................................................................................................ 46
UI Troubleshooting ........................................................................................................ 1
Introduction ..................................................................................................................1
UI module troubleshooting cases .................................................................................1
Display blank............................................................................................................. 1
Image on display not correct ..................................................................................... 2
Key or 5-way switch not working ............................................................................. 4
Grip-Module Troubleshooting ....................................................................................... 1
Introduction ..................................................................................................................1
Backlight ......................................................................................................................2
Current Gauge ..............................................................................................................3
Vibra ............................................................................................................................4
Keyboard ......................................................................................................................5
Hall Sensor ...................................................................................................................6
Camera Troubleshooting Instructions ............................................................................ 1
Background, tools and terminology .............................................................................1
Terms......................................................................................................................... 1
Image taking conditions effect to image quality ..........................................................2
Camera construction ....................................................................................................8
Image quality analysis .................................................................................................9
Possible faults in image quality................................................................................. 9
Testing for dust.......................................................................................................... 9
Testing for sharpness............................................................................................... 10
Bit errors.................................................................................................................. 14
Fault finding trees ......................................................................................................15
Hardware failure message ....................................................................................... 15
No recognizable viewfinder image ........................................................................ 17
Bad image quality.................................................................................................... 18
Issue 1 07/02 ¤Nokia Corporation
NHL-2NA
Page 3