Nokia Lumia 525 RM 998 Service Manual Level 1&2. Www.s Manuals.com. 1,2 V1.0

User Manual: Smartphone Nokia Lumia 525 RM-998 - Service manuals and Schematics, Disassembly / Assembly. Free.

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Page Count: 32

Check the repair

policy before

performing any

mechanical repair

on Service Level

1&2!

Service Manual for L1 an

d

L

2

Nokia Lumia 525

RM-998

Key features

z

Full WP8 Experience in affordable package

z

1 GHz Dual core CPU

z

4.0" IPS LCD Display (800 x 480 pixels)

z

5 MP Auto focus camera and 720p HD video recording

z

MicroSD card support up to 64GB

Versio

n

1.0

Exploded view Disassembly steps Assembly hints

Solder components Service devices Product controls and interfaces

Service concept Phone reset

©2013 Nokia | Nokia Internal Use only | All Rights Reserved.

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Service Manual Level 1 and 2

Nokia Lumia 525

RM-998

Version 1.0

Exploded view

EARPIECE GASKET

I0005

TOUCH WINDOW &

A-COVER ASSEMBLY

I0001

DISPLAY SUPPORT

I0003

EARPIECE

I0004

AV JACK ADHESIVE

I0007

LIGHT SWAP PWB

I0011

CAMERA MODULE

I0015

MAIN ANTENNA

I0024

WCN SHIELDING LID

I0019

VOLUME KEY

I0026

PMU SHIELDING LID

I0016

DISPLAY

I0002

DISPLAY CONDUCTIVE TAPE

I0029

AV JACK FLEX ADHESIVE

I0008

CAMERA KEY

I0027

HEAT SPREADER

I0009

TYPE LABEL

I0012

AV JACK

I0006

SPEAKER GASKET

I0022

IHF SPEAKER

I0023

POWER KEY

I0028

CELL PA SHIELDING LID

I0021

RF IC SHIELDING LID

I0018

MICROPHONE GASKET

I0010

SCREW TORX+

SIZE 4 M1.4 X 3.4

I0013

EMMC SHIELDING LID

I0017

SCREW TORX+

SIZE 4 M1.4 x 4.5

I0025

DISPLAY SUPPORT ASSEMBLY

(I0003 - I0010)

1

B-COVER ASSEMBLY

(I0026 - I0028)

4

D-COVER ASSEMBLY

(I0022 - I0024)

3

LIGHT SWAP PACKAGE

(I0011 - I0012) 2

Only available

as assembly

Not reuseable

after removal

Repair/swap

only in level 3

©2013 Nokia | Nokia Internal Use only | All Rights Reserved.

Service Manual Level 1 and 2

Nokia Lumia 525

RM-998

Version 1.0

Disassembly steps

1) For disassembling you need the Nokia Standard toolkit version 2. You will also need the camera

removal tool SS-305 and an AV plug.

2) Protect the TOUCH WINDOW with protective film.

3) Release the BACK COVER by pushing from the top.

4) Remove the BACK COVER.

5) Lift up the BATTERY from the bottom and remove it.

6) Unscrew the five Torx+ size 4 screws in the order shown. Do not use them again. Discard them.

7) Unscrew the three Torx+ size 4 screws in the order shown. Do not use them again. Discard them.

8) Release the two clips on the left side of the D-COVER with the SRT-6, starting from the bottom.

9) Then release the two clips on the right side of the D-COVER, starting from the bottom.

10) Release also the top side of the D-COVER from the shown place.

11) Lift up and remove the D-COVER.

12) Release the IHF SPEAKER with the SS-93 and remove it with tweezers. Do not use it again. Discard it.

13) Remove the SPEAKER GASKET with tweezers. Do not use it again. Disard it.

14) Open the DISPLAY connector with the SS-93. Be careful not to damage the connector or any

components nearby.

15) Open the TOUCH WINDOW connector with the SS-93. Be careful not to damage the connector or any

components nearby.

16) Release the TOUCH WINDOW connector flex from the ENGINE BOARD by carefully pushing it with the

SS-93. Be careful not to damage the flex.

17) Release the two clips holding the ENGINE BOARD with the SS-93.

18) Lift up and remove the ENGINE BOARD.

19) Remove the CAMERA with the SS-305 camera removal tool. Insert the tool to the CAMERA socket.

Then press and hold from the sides and pull up the CAMERA.

20) Release the EARPIECE with the sharp end of the SS-93 and remove it with tweezers. Do not use it

again. Discard it.

21) Remove the EARPIECE GASKET with tweezers. Do not use it again. Discard it.

22) Lift up the AV JACK with an AV plug while holding the AV JACK flex with finger.

23) Then carefully release the AV JACK flex with the SS-93 and remove the AV JACK.

24) Remove the HEAT SPREADER with tweezers. Do not use it again. Discard it.

25) Release the DISPLAY SUPPORT from the shown place with the SRT-6.

26) Separate the DISPLAY SUPPORT including the DISPLAY from the TOUCH WINDOW.

27) Protect the other side of the TOUCH WINDOW with protective film.

28) Protect the DISPLAY with protective film.

29) Carefully release the DISPLAY from the DISPLAY SUPPORT by pushing from the hole next to the

DISPLAY flex with the sharp end of the SS-93. Note that releasing the DISPAY is allowed ONLY from the

shown place.

30) Separate the DISPLAY from the DISPLAY SUPPORT. Be careful not to damage the DISPlAY flex while

guiding it through the DISPLAY SUPPORT.

31) The Nokia Lumia 525 disassembly procedure is complete.

-END OF DISASSEMBLY-

©2013 Nokia | Nokia Internal Use only | All Rights Reserved.

Service Manual Level 1 and 2

Nokia Lumia 525

RM-998

Version 1.0

Assembly hints

1) Before assembling the DISPLAY attach the DISPLAY CONDUCTIVE TAPE to the bottom back side of the

DISPLAY. Start by removing the shown protective film from the DISPLAY CONDUCTIVE FILM.

2) Attach the DISPLAY CONDUCTIVE TAPE to the DISPLAY FPC as shown. Make sure that the shown holes

of the DISPLAY CONDUCTIVE TAPE are aligned correctly with the DISPLAY FPC.

3) Fold the DISPLAY CONDUCTIVE TAPE to the front side of the DISPLAY as shown.

4) Remove the remaining protective film of the DISPLAY CONDUCTIVE TAPE.

5) Fasten the three Torx+ size 4 screws in the order shown to the torque of 12 Ncm.

6) Fasten the five Torx+ size 4 screws in the order shown to the torque of 11 Ncm.

7) If there is a problem with the functionality of the CAMERA KEY, go through the following steps to fix it:

First check that the CAMERA KEY switch is working properly by pressing it halfway (focusing) and all the

way (taking a picture). If the CAMERA KEY switch is not working it has to be replaced. It is a level 2 part

and needs soldering.

8) Secondly, check that the CAMERA KEY is assembled firmly by pushing it outwards from the inside of

the BACK COVER.

9) Then assemble the BACK COVER to the device bottom left corner first. Do not touch the SIDE KEYS.

10) Then press the BACK COVER to the device until it snaps.

11) Check the tactility of the SIDE KEYS. If this does not solve the problem try using a BACK COVER from

another working device and if it works, swap the BACK COVER to a new one.

12) After the assembly procedure is complete, power on the device and put it in dark environment. Then

check that there is no light leakage visible on the bottom right corner of the display.

©2013 Nokia | Nokia Internal Use only | All Rights Reserved.

Service Manual Level 1 and 2

Nokia Lumia 525

RM-998

Version 1.0

Solder components

S4402X7771 S4403 S4401 S4400 X7770

X7761

X7760

F1400

X1353 X2105

X7773

X7774

X2101

X7767 Z5200X7720

Volume up

switch

Antenna

GND spring

Antenna

GND spring

Antenna

GND spring

WLAN Antenna

spring

GNSS Antenna

spring

Main antenna

GND spring

Main antenna

spring

Micro SD

ASIP filter

Camera

fuse

ALS/Proxy

connector

AV Jack

connector

Volume down

switch

Power/Lock

switch

Camera

switch

Antenna

GND spring

Antenna

GND spring

IHF Speaker

spring +

IHF Speaker

spring -

BOTTOM

TOP

©2013 Nokia | Confidential | All Rights Reserved.

Service Manual Level 1 and 2

Nokia Lumia 525

RM-998

Version 1.0

Service devices

CA-189CD Service cable AC-20 Travel charger BL-5J

SS-305 Camera removal tool Nokia Standard Toolkit (v2)

For more information, refer to the Service

Bulletin (SB-011) on Nokia Online. Supplier or

manufacturer contacts for tool re-order can be

found in “Recommended service equipment”

document on Nokia Online.

©2013 Nokia | Nokia Internal Use only | All Rights Reserved.

Service Manual Level 1 and 2

Nokia Lumia 525

RM-998

Version 1.0

Product controls and interfaces

3

4

5

6

11

12

13

14

7

8

9

10

16

15

10 — Camera

9 — Micro USB connector

8 — Microphone

7 — Search key

6 — Back key

5 — Home key

4 — Touch screen

3 — Ambient light & Proximity

sensors

1 — 3.5 mm AHJ connector

2 — Earpiece

11 — Volume keys

12 — Power/Lock key

13 — Camera key

14 — Loudspeaker

15 — GNSS antenna

16 — Cellular antenna

v1.0

©2013 Nokia | Nokia Internal Use only | All Rights Reserved.

Service Manual Level 1 and 2

Nokia Lumia 525

RM-998

Version 1.0

Service concept

Flashing concept

Transceiver

Service

software

CA-101

Care Dummy Battery

with power supply

via Nokia charger

or product

specific battery

©2013 Nokia | Nokia Internal Use only | All Rights Reserved.

Service Manual Level 1 and 2

Nokia Lumia 525

RM-998

Version 1.

0

Phon

e

rese

t

Hardware reset

If the phone hardware is jammed, you should first

recommend that the consumer performs a hardware reset.

The hardware reset does not reset the Windows Live ID or

remove any consumer data.

To perform a hardware reset, remove the battery and wait

for one minute before reinserting it. Boot up the phone

normally.

Software / operating system (OS) reset

The software / operating system (OS) reset returns the phone to its out-of-the-box state. Note that this

procedure erases all consumer data! Always first try to perform a hardware reset.

Option 1: About men

u

- Use this option if the consumer knows the lock code

- This option warns the consumer about data loss!

-Tap Settings > About > reset your phone

Option 2: Hardware key combination

- Use this option if the phone is locked and the consumer does not know the code

- Note: no warning about data loss!

- Do not advertise this feature to consumers!

Follow next steps to perform OS reset with phone keys.

Step 1

Make sure the phone is turned Off.

1. Press and hold the power key

2. Phone vibrates (release the

power key)

3. Press and hold the volume

down key

4. Exclamation mark is shown on

the screen (release the volume

down key)

Step 2

Input the following key

combination:

1. Volume up

2. Volume down

3. Power

4. Volume down

Step 3

The phone will reset and boot up

automatically. Please note that this

may take several minutes.

©2013 Nokia | Nokia Internal Use only | All Rights Reserved.

Service Manual Level 1 and 2

Nokia Lumia 525

RM-998

Version 1.0

Version histor

y

Version Date Description

1.0 28.11.2013 First published version

©2013 Nokia | Nokia Internal Use only | All Rights Reserved.

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