Nokia E62 Service Manual

Display module troubleshooting
General instructions for display troubleshooting
The first step is to verify with a working display that the fault is not on the display module itself. The display
module cannot be repaired.
The second step is to check that the cellular engine is working normally. This can be done by connecting the
phone to a docking station and starting Phoenix service software. With the help of Phoenix read the phone
information to check that also the application engine is functioning normally (you should be able to read the
APE ID).
After these checks proceed to the display troubleshooting flowcharts. Use the Display Test tool in Phoenix to
find the detailed fault mode.
Operating modes of the display
The display is in a normal mode when the phone is in active use.
The display is in a partial idle mode when the phone is in the screen saver mode.
The operating modes of the display can be controlled with the help of Phoenix.
Table 9 Display module troubleshooting cases
Display blank There is no image on the display. The display looks
the same when the phone is on as it does when the
phone is off. The backlight can be on in some cases.
Image on the display not correct Image on the display can be corrupted or a part of
the image can be missing. If a part of the image is
missing, change the display module. If the image is
otherwise corrupted, follow the appropriate
troubleshooting diagram.
Backlight dim or not working at all Backlight LED components are inside the display
module. Backlight failure can also be in the
connector or in the backlight power source in the
main engine of the phone. Backlight is also
controlled automatically by the ambient light
sensor.
This means that in case the display is working
(image OK), but the backlight is not, follow the
Display and Keyboard Backlight troubleshooting.
Visual defects (pixel) Pixel defects can be checked by controlling the
display with Phoenix. Use both colours, black and
white, on a full screen.
The display may have some random pixel defects
that are acceptable for this type of display. The
criteria when pixel defects are regarded as a display
failure, resulting in a replacement of the display, are
presented the following table.
RM-88
Nokia Customer Care BB Troubleshooting and Manual Tuning Guide
Page 6 –18 COMPANY CONFIDENTIAL Issue 1
Copyright © 2006 Nokia. All rights reserved.

Nokia E62 Specifications

General

Panel type	LCD
Display resolution	320 x 240 pixels
Display number of colors	16.78 million colors
Ringer type	Polyphonic
Processor frequency	0.235 GHz
Internal memory	80 MB
Compatible memory cards	miniSD
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
Bundled software	S 60 UI
Form factor	Bar
Product color	Silver, White
Talk time (2G)	5.5 h
Battery capacity	1500 mAh
Standby time (2G)	330 h
2G standards	EDGE, GPRS
Keyboard layout	QWERTY
Personal info management (PIM)	Alarm clock, Calculator, Calendar, Notes

Weight and Dimensions

Depth	14 mm
Width	69.7 mm
Height	177 mm
Weight	144 g