RM-30
5 - Disassembly InstructionsNokia Customer Care
Disassembly Instructions
■ General requirements
Use the correct ESD protection before handling the RM-30 product.
Use gloves to handle the RM-30 product.
Required tools:
•torx 6 screwdriver, for disassembly
•torx 6 torque-driver, set to 28Ncm torque for reassembly
•slotted screwdriver
•tweezers
•SS-42 camera removal tool
•SRT-6 opening tool
•DC-plug
Note: When shielding lids are removed from the shielding frames of the PWB, new lids
must be used in order to close the shielding properly. It is not allowed to re-use the removed ones.
Note that the IHF net stays in place during disassembly.
RM-30
Nokia Customer Care5 - Disassembly Instructions
Note: It is not possible to disassemble the power actuator without damaging it. The power actuator is the same material as B-cover.
Note: If a new B-cover is used, a torque setting of 28Ncm and speed in the range of 400 - 600
rpm is required to cut the new thread.
Caution: The display connector is fragile. Movement of the display module/UI shield assembly
can damage the solder joints of connector on the display module or phone PWB. Ensure it is
held in place during unscrewing and screwing.
RM-30
5 - Disassembly InstructionsNokia 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 PWM and light guide.
Note: In some regions the light guide assembly (which includes the ligh t guide, the meta l frame
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.
■ 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 (no t
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 th e 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:
Protecting foil will
stick on dome sheet
All dome sheet parts
are lifted.
(Nothing sticks on
the bottom foil.)
RM-30
5 - Disassembly InstructionsNokia Customer Care
■ Placing the light guide assembly onto the PWB
In some regions there is the possibility to order the light guide assembly including the dome
sheet. In any case the protecting foil needs to be carefully removed from the dome sheet.
Then place the assembly to the PWB and press it firmly together.
Note: It is very important to press the light guide assembly and the PWB properly together at any
point. If some points are not pressed properly together dust and humidity will sneak between
PWB and dome sheet and will cause corrosion, which lead usability problems and to a defect
which might lead to a total loss of the phone.
Now you can be continue with the assembly procedure.