Definition of screws used in ATO assembly.doc

              CONFIDENTIAL              1 (2)

Customer and Market Operations              Service Bulletin No. SB-007/04.08.05

EMEA Customer Care             

              RM-51

DEFINITION OF SCREWS USED IN ATO ASSEMBLY

Instructions:

Since the product was launched some of the screws has been changed in order to achieve a better locking concept. Originally the locking mechanism was placed in the A-cover. The final solution will use thread lock screws instead.

For some of the screws 3 different types have been in use, as the table shows below.

Three different sizes of screw are used in this product, and two of these has been changed: I033 and I034.

This bulletin will describe the assembly order and other specific details.

Change history of the screws:

This means that all 3 types of screw can be found in the phones returned for service

Two types of screws are used when mounting the A-cover:

2 x ATO screws M1.6x10: NMP 6380379 – length 10 mm and blank

2 x ATO screws M1.6x7: NMP 6380377 – length 7 mm and black

M1.6x7

M1.6x10

Compatibility:

The first version of the screws were intended for A-cover version 3 that has a slightly smaller pitch than the screws in order to perform a locking mechanism.

Torque’s to be used with the different combinations:

*) When using version 3 of the A-cover assembly, you need to check that the screws can be fully inserted using the stated torques. The insert in the covers version 3 might get lose if higher a torques is applied. In such cases the screw will be difficult to remove and the A-cover needs to be replaced.

The version of the A-cover assembly can be found from the inside of the cover (marked by the red circle: “V4.0”)

RM-51 SB-007                            Copyright © Nokia Corporation 2005