Microsoft LUMIA 520 Service Manual

Service Manual for L1 and L2

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Nokia Lumia 520

RM-914, RM-915

Key features

Full WP8 Experience in affordable package
1 GHZ Dual core CPU

4.0" LCD Display (800 x 480 pixels)
720P HD Video recording
MicroSD card support up to 64GB

Version 1.0

Exploded view Disassembly steps Assembly hints

Check the repair

policy before

performing any

mechanical repair

on Service Level

1&2!

More More More

Solder components Service devices Product controls and interfaces

More More More

Service concept Phone reset

More More

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

Service Manual Level 1 and 2

Nokia Lumia 520

RM-914, RM-915
Version 1.0

Exploded view

TOUCH WINDOW & A-COVER

DISPLAY SUPPORT ASSEMBLY

(I0003 - I0010)

1

ASSEMBLY

I0001

DISPLAY SUPPORT

EARPIECE GASKET

AV JACK ADHESIVE

WCN SHIELDING LID

LIGHT SWAP PWB

I0003

I0005

EARPIECE

I0004

I0007

I0019

I0011

DISPLAY
I0002

DISPLAY CONDUCTIVE TAPE
I0029

TYPE LABEL
I0012

MICROPHONE GASKET
I0010

HEAT SPREADER
I0009

AV JACK FLEX ADHESIVE
I0008

AV JACK
I0006

RF IC SHIELDING LID
I0018
CELL PA SHIELDING LID
I0021

LIGHT SWAP PACKAGE

(I0011 - I0012)

2

PMU SHIELDING LID

CAMERA MODULE

D-COVER ASSEMBLY

(I0022 - I0024)

3

SCREW TORX+ SIZE 4

B-COVER ASSEMBLY

(I0026 - I0028)

4

v1.0

I0016

I0015

MAIN ANTENNA

I0024

M1.4 x 4.5

I0025

VOLUME KEY

I0026

Only available
as assembly

EMMC SHIELDING
LID
I0017

BATTERY BL-5J
I0014

IHF SPEAKER
I0023
SPEAKER GASKET
I0022

SCREW TORX+ SIZE 4
M1.4 X 3.4
I0013

CAMERA KEY
I0027
POWER KEY
I0028

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 520

RM- 914, RM-915
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 520 disassembly procedure is complete.

-END OF DISASSEMBLY-

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

Service Manual Level 1 and 2

Nokia Lumia 520

RM- 914, RM-915
Version 1.0

Assembly hints

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

2) After the DISPLAY connector is connected, hold the connector with a finger and use the SS-93 to bend
the flex down from the edge of the ENGINE BOARD, so that the result is as shown. Be careful not to
damage the flex when bending it!

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

4) Fasten the five Torx+ size 4 screws in the order shown to the torque of 14 Ncm.

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

Service Manual Level 1 and 2

Nokia Lumia 520

RM-914, RM-915
Version 1.0

Solder components

Antenna

GND spring

Volume up

switch

Volume down

switch

Power/Lock

switch

Camera

switch

X7771 S4403 S4401 S4400 X7770

X7773

F1400

Antenna

GND spring

Camera

fuse

IHF Speaker

spring +

IHF Speaker

spring -

X2101

X1353 X2105

ALS/Proxy
connector

AV Jack

connector

Antenna

GND spring

Antenna

GND spring

X7774

Antenna

GND spring

BOTTOM

X7767 X1401Z5200X7720

WLAN Antenna

spring

v1.0

GNSS Antenna

spring

Micro SD

ASIP filter

Main antenna

GND spring

Main antenna

spring

X7760

X7761

Display

connector

©2013 Nokia | Confidential | All Rights Reserved.

Service Manual Level 1 and 2

V

0

Nokia Lumia 520

RM-914, RM-915

ersion 1.

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

Service devices

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 520

RM-914, RM-915
Version 1.0

Product controls and interfaces

1 — 3.5 mm AHJ connector

2 — Earpiece

3

3 — Ambient light & Proximity

sensors

4 — Touch screen

5 — Home key

6 — Back key

7 — Search key

4

8 — Microphone

9 — Micro USB connector

10 — Camera

11 — Volume keys

5

6

7

8

12 — Power/Lock key

13 — Camera key

14 — Loudspeaker

15 — GNSS antenna

9

16 — Cellular antenna

15

v1.0

10

16

11

12

13

14

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

Service Manual Level 1 and 2

Nokia Lumia 520

RM-914, RM-915
Version 1.0

Flashing concept

Service concept

Service

software

CA-101

Care Dummy Battery
with power supply
via Nokia charger
or product
specific battery

Transceiver

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

Service Manual Level 1 and 2

0

t

u

Nokia Lumia 520

RM-914, RM-915
Version 1.

Phone rese

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

- 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

V

0

y

Nokia Lumia 520

RM-915, RM-915

ersion 1.

Version Date Description

1.0 28.02.2013 First published version

Version histor

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