Nokia 6020b Service Manual
Issue 1 03/2005
COMPANY CONFIDENTIAL
11
Copyright © 2005 Nokia. All Rights Reserved.
RM-31
5 - Disassembly Instructions
5 - Disassembly Instructions
Nokia Customer Care
Dome Sheet Placement
Since the dome sheet has to be removed before every soldering process a new dome sheet
needs to be placed between the PWB and light guide.
needs to be placed between the PWB and light guide.
Note: In some regions the light guide assembly (which includes the light guide, the metal frame
and the domesheet) will be replaced as one part (this is the preferred procedure). The descrip-
tion below is needed, when the domesheet needs to be replaced separately, which is not the
preferred procedure.
and the domesheet) will be replaced as one part (this is the preferred procedure). The descrip-
tion below is needed, when the domesheet needs to be replaced separately, which is not the
preferred procedure.
■
Cleaning
The PWB needs to be cleaned and all remaining material from the old dome sheet needs to be
removed. In some regions there is the possibility to exchange the dome sheet separately (not
together with the light guide assembly), then the light guide needs to be cleaned as well.
removed. In some regions there is the possibility to exchange the dome sheet separately (not
together with the light guide assembly), then the light guide needs to be cleaned as well.
■
Placing the dome sheet to the light guide
The dome sheet is delivered on transparency foil. First step is to remove the dome sheet from
the foil, where you need to ensure that the complete dome sheet is lifted and the protecting foil
on the other side of the dome sheet still sticks on the dome sheet. Please see picture below:
the foil, where you need to ensure that the complete dome sheet is lifted and the protecting foil
on the other side of the dome sheet still sticks on the dome sheet. Please see picture below:
Protecting foil will
stick on dome sheet
stick on dome sheet
All dome sheet parts
are lifted.
(Nothing sticks on
the bottom foil.)
are lifted.
(Nothing sticks on
the bottom foil.)