Nokia Customer Care 5 - Disassembly/ Reassembly Instructions Issue 1 04/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-94 Nokia Customer Care 5 - Disassembly/Reassembly Instructions This page has been intentionally left blank. 2 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-94 5 - Disassembly/Reassembly Instructions Nokia Customer Care Table of Contents Page No Disassembly Instructions................................................................................... 5 General requirements ............................................................................................................................... 5 Detailed disassembly instructions......................................................................................................... 6 Reassembly .....
RM-94 Nokia Customer Care 5 - Disassembly/Reassembly Instructions This page has been intentionally left blank. 4 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-94 5 - Disassembly/Reassembly Instructions Nokia Customer Care Disassembly Instructions ■ General requirements Use the correct ESD protection before handling the RM-94 product. Use gloves to handle the RM-94 product.
RM-94 Nokia Customer Care 5 - Disassembly/Reassembly Instructions ■ Detailed disassembly instructions Needed tools for disassembly. Protect the window with a plastic film. Remove the C-cover and protect the camera window. Unlock the side snaps with SRT-6 when opening the A-cover. Also protect the inner side of the window with a protective film. Remove the keymat. Unscrew the six Torx Plus® size 6 screws. For assembly, the reverse order and a Torx Plus® driver with a torque of 28Ncm has to be used.
RM-94 5 - Disassembly/Reassembly Instructions Nokia Customer Care Carefully open the LCD connector. Do not damage the LCD connector. Remove the UI shield assy with the LCD module. Lever out the LDC module from the UI shield. Protect the LCD module with a protective film. Separate the light guide assy from the engine module. Do not use the SRT-6 on the right side to avoid damaging underneath components. Now, take away the light guide assy. Remove the DC-jack with a DC-plug.
RM-94 Nokia Customer Care 5 - Disassembly/Reassembly Instructions Lever out the vibra motor. Remove the PDC key. Remove the volume key. Remove the Bluetooth antenna with tweezers. First unlock this side of the IHF lid with SRT-6. Note that the IHF net stays in place during disassembly. Release the IHF speaker carefully with a slotted screwdriver. Always use a new speaker adhesive when assembling. 8 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-94 5 - Disassembly/Reassembly Instructions Nokia Customer Care 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.
RM-94 Nokia Customer Care 5 - Disassembly/Reassembly Instructions 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 light guide, the metal frame and the domesheet) will be replaced as one part (this is the preferred procedure).
RM-94 5 - Disassembly/Reassembly Instructions Nokia Customer Care Place the dome sheet onto the cleaned light guide and press them firmly together. Take care, that the holes of the domesheet align exactly with the holes on the light-guide. Issue 1 04/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-94 Nokia Customer Care 5 - Disassembly/Reassembly Instructions ■ 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.
RM-94 5 - Disassembly/Reassembly Instructions Nokia Customer Care Component Replacement Hints When exchanging components, all components must be placed properly. There is an extra challenge when: • Components are manually replaced • Lead free process is applicable (which is the case for all RM-94 devices) Therefore, the following replacement support and check possibilities have been implemented: Figure 1: PWB overview Issue 1 04/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-94 Nokia Customer Care 5 - Disassembly/Reassembly Instructions ■ Power switch (S2419) The power switch replacement has a direct influence to the phone usability and failure rates. Improper placement can cause difficulties to switch the phone on / off or increase the switch’s sensitivity when dropping the phone (peeling of the switch or its pads).
RM-94 5 - Disassembly/Reassembly Instructions Nokia Customer Care ■ Hardware accelerator (D1470) There are also corner marks introduced in order to enable checking placement after rework process. ■ UPP (D2800) There are also corner marks introduced in order to help checking placement after rework process. Issue 1 04/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-94 Nokia Customer Care 5 - Disassembly/Reassembly Instructions ■ Flash (D3000) There are some corner marks introduced. ■ SIM card reader (X2700) There are some corner marks introduced. 16 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-94 5 - Disassembly/Reassembly Instructions Nokia Customer Care ■ System connector (X2002) There are also some marks introduced (bars) in order to help placing the system connector and checking placement after rework. The placement bars need to be visible (they can be partly hidden by the connector), but the connector must equally hide them in order to be parallel to the PWB. In addition, the connectors must meet their pads properly as well.
RM-94 Nokia Customer Care 5 - Disassembly/Reassembly Instructions ■ Battery connector (X2000) There are also some corner marks introduced in order to support placement of the connector and checking placement after rework. 18 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-94 5 - Disassembly/Reassembly Instructions Nokia Customer Care ■ Bluetooth transceiver There are also some corner marks introduced in order to help checking placement after rework. Issue 1 04/2005 COMPANY CONFIDENTIAL Copyright © 2005 Nokia. All Rights Reserved.
RM-94 Nokia Customer Care 5 - Disassembly/Reassembly Instructions ■ Label placement Different countries require different labels. This guide explains where it is possible to place these labels. In the figure below, there are numbered shaded areas (1 - 5) where labels can be placed. On the right hand side there are numbers and labels. The numbers refer to the place where the label is allowed to be placed.
