Dome Sheet Placement; Cleaning; Placing The Dome Sheet To The Light Guide - Nokia RH-37 Series Disassembly Instructions Manual

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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 PWM and light guide.

Note: In some regions the lightguide assembly (which includes the lightguide,the metalframe and the

domesheet) will be replaced as one part (this is the preferred procedure). The description below is

needed, when the domesheet needs to be replaced separately, which is not the preferred procedure.

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 sepa-

rately (not together with the light guide assembly), then the light guide needs to be

cleaned as well.

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:

Issue 1 07/04

Nokia Corporation

5 - Disassembly Instructions

Protecting foil will

stick on dome sheet

All dome sheet parts

are lifted.

(Nothing sticks on

the bottom foil.)

RH-37

Page 11

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