Wie man ein T919i zerlegt...

Hinweis: Ein Mausklick auf ein Bild zeigt eine größere Ansicht für die Details.

Purpose and scope

The purpose of this document is the specification of the T919i assembly process

Step 1

Separate the populated PCB´s from the panel. Take care, that no
excess material remains at the edges of the PCB. Excess material at the
edges might cause gaps in the plastic housing and SIM contact problems.

Step 2

Perform the board test.

Step 3

Assemble the shield covers. Assembly of the shield covers is a task
which is recommended to be done by the operator of the board tester.
Shield cover BB2 and shield cover RF do not need any special
proceedure. Bevore clamping the shield cover BB1 to the shield frame,
it is necessary to bring the hooks on the wide side of the cover into
the correct position – see picture below.

Step 4

Solder the MMC shield to ground. The length of each solder joint
needs to be min. 3mm. If this shield is not grounded correctly, a
software crash will result when there is an incoming call while
listening to MP3 or when using MP3
ringtones (lack of RF immunity of some MMC/SD cards). This step is a
task which is recommended to be done by the operator of the board
tester.

Step 5

Glue the self adhesive speaker foam to the PCB. This step is a task
which is recommended to be done by the operator of the board tester.

Step 6

Connect the display to the main PCB: First gently connect the flexprint to the 40-PIN
connector. Do not use excessive force. Then position the 3 clips at the
side which is closer to the connector. Finally clamp the 3 clips on the
opposite side of the PCB. This step is a task which is recommended to
be done by the operator of the board tester.

Step 7

Insert the microphone foam.

Step 8

Insert the microphone.

Step 9

Insert the speaker gasket.

Step 10

Insert the speaker.

Step 11

Fix the PCB at the front case. The torque of the screwdriver has to be set to 19Nm. Use two 8×1,8mm T6plus screws.

Step 12

Connect the camera to the ZIF connector. Connect the antenna.

Step 13

Place the vibra motor.

Step 14

Position the back case. Follow the procedures on the fotos. The
camera has to be positioned gently in order to avoid damage of the
flexprint. The torque of the screwdriver has to be set to 19Nm. Use two
8×1,8mm T6plus screws.

Check that the SIM connector is in line with the surrounding
plastics. In case of a step, SIM contact problems will occur. Reasons
are: shield cover BB1 not correctly clamped to the shield frame BB1,
solder on top of shield cover BB1 after soldering the MMC shield or
excess material at the edges of the PCB after de-panelisation.

Step 15

Perform the final test

Step 16

Assemble the back frame.

Step 17

Assemble battery cover and stylus.