Nokia Lumia 925, RM-892, RM-893, RM-910 Service Manual

Service Manual for L1 and L2

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z

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Nokia Lumia 925

RM-892, RM-893, RM-910

Key features

Check the repair

8.7 Mpix PureView camera with OIS
Built-in wireless charging support

4.5" AMOLED WXGA display
New Lumia design with an anodized aluminum chassis

policy before

performing any

mechanical repair

on Service Level

1&2!

Version 1.0

Exploded view Disassembly steps Assembly steps

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 925

RM-892, RM-893, RM-910
Version 1.0

DISPLAY ASSEMBLY

(I0001, I0002)

1

METAL DECO

I0001

CAMERA BOOT

I0028

FRONT CAMERA

I0016

TYPE LABEL

I0009

SIM TRAY

I0029

Exploded view

DISPLAY
I0002

CAMERA
I0015

BATTERY
I0003

CONNECTOR SUPPORT

LIGHT SWAP PACKAGE

(I0008, I0009)

3

WATER INGRESS LABEL

CONNECTOR ASSEMBLY

(I0017 - I0019)

4

CONNECTOR SUPPORT FRAME

MICROPHONE

AV CONNECTOR

USB CONNECTOR

CONNECTOR LATCH

VIBRA HOLDER

WLAN/GPS ANTENNA

WATER INGRESS LABEL

MIMO ANTENNA

SCREW TORX+

SIZE 4 RF1.2 x 4.0

BATTERY

I0004

I0017

I0018

I0019

I0007

VIBRA
I0020

I0030

I0022

I0011

I0010

I0027

THERMAL PAD
I0024

LIGHT SWAP PAWB
I0008

SIDE KEY ASSEMBLY
I0013

BOTTOM FLEX
I0014

ANTENNA COAX CABLE
I0023

SPEAKER BOX
I0021

MAIN ANTENNA
I0012

SCREW TORX+
SIZE 4 RF1.2 X 2.8
I0025

SCREW TORX+
SIZE 6 M1.6 X 3.0
I0026

BACK COVER ASSEMBLY

(I0005, I0006)

2

LED FLASH

I0006

Only available
as assembly

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

BACK COVER
I0005

Not reuseable
after removal

Repair/swap
only in level 3

Service Manual Level 1 and 2

Nokia Lumia 925

RM- 892, RM-893, RM-910
Version 1.0

Disassembly steps

1) For disassembling you need the Nokia Standard toolkit version 2. You will also need the SIM door key,
the SS-311 Back cover release tool, an AV plug, SS-317 Battery removal tool, SS-318 Protective cover
and the SS-231 RF connector disassembly/assembly tool.

2) Protect the DISPLAY with protective film.

3) Release the SIM TRAY with the SIM door key and pull it out.

4) Release the shown corner of the BACK COVER with the SS-311 back cover release tool.

5) Release the top end of the BACK COVER with the SS-93 by sliding it to the direction shown. When
releasing the BACK COVER, hold the SS-93 as shown to avoid damaging any components underneath the
BACK COVER. Be also careful not to damage the clips holding the BACK COVER!

6) Slide the SS-93 to the direction shown to release the left side of the BACK COVER. Be careful not to
damage the BACK COVER or any components underneath it!

7) Slide the SS-93 to the direction shown to release the bottom end of the BACK COVER. Be careful not
to damage the BACK COVER or any components underneath it!

8) Slide the SS-93 to the direction shown to release the right side of the BACK COVER. Be careful not to
damage the BACK COVER or the ANTENNA COAX CABLE underneath it!

9) When all sides of the BACK COVER are open, release the camera clip by pulling BACK COVER up while
gently turning and pushing towards top end of the phone. Be careful not to damage the BACK COVER
camera clip!

10) Remove the BACK COVER. Check all the BACK COVER clips for damages. Check also the camera clip. In
case any of the clips are damaged, discard the BACK COVER.

11) Open the BATTERY connector with the SS-93. Always open the connectors carefully to avoid
damaging them or any components nearby.

12) Unscrew the three Torx+ size 6 screws.

13) Remove the CONNECTOR SUPPORT FRAME with tweezers.

14) Open the BOTTOM FLEX connector with the SS-93.

15) Open the SIDE KEY connector.

16) Open the DISPLAY connector.

17) Open the CONNECTOR FLEX.

18) Open the FRONT CAMERA connector.

19) Disconnect the ANTENNA COAX CABLE connector from the ENGINE BOARD with the SS-231. Lock the
SS-231 to the top of the connector as shown and lift it up carefully. Keep the other end of the ANTENNA
COAX CABLE connected. Be careful not to damage the connector.

20) Unscrew the two Torx+ size 4 screws.

21) Remove the MIMO ANTENNA with tweezers.

22) Release the ENGINE BOARD by lifting it up from the shown place with the SS-93.

23) Lift up and remove the ENGINE BOARD. Be careful not to damage any of the flexes. Use the SS-93 to
guide the flexes away from the ENGINE BOARD.

24) Pull the WLAN/GPS ANTENNA to the direction shown and remove it.

25) Open the CAMERA CONNECTOR from the shown side.

26) Remove the CAMERA.

27) Remove and discard the THERMAL PAD.

28) Release the CONNECTOR LATCH from the shown place.

29) Remove the CONNECTOR LATCH. Be careful not to damage the flex when guiding it through the
CONNECTOR LATCH.

30) Remove the FRONT CAMERA.

31) Remove the CAMERA BOOT from the FRONT CAMERA.

32) To remove the CONNECTOR FLEX, first gently pull the secondary microphone and the micro USB
connector away from the METAL DECO ASSEMBLY.

33) Then lift up the CONNECTOR FLEX with an AV plug.

34) Remove the CONNECTOR FLEX.

35) Unscrew the two Torx+ size 4 screws.

36) Release the SIDE KEY ASSEMBLY with the SS-93 from both ends. Be careful not to damage it.

37) Remove the SIDE KEY ASSEMBLY.

38) Release the SPEAKER BOX from the shown place with the SS-93.

39) Remove the SPEAKER BOX.

40) Remove the MAIN ANTENNA from the SPEAKER BOX with the SS-93 only if either one is damaged.
Remove any adhesive remains from the MAIN ANTENNA and the SPEAKER BOX.

41) Carefully disconnect the other end of the ANTENNA COAX CABLE.

42) Remove the ANTENNA COAX CABLE with tweezers. Make sure to grab the ANTENNA COAX CABLE only
from the metal shields and not from the cable itself.

43) Release the BOTTOM FLEX with the SS-93. Be careful no to damage it.

44) Remove the BOTTOM FLEX.

45) Release the VIBRA HOLDER by inserting the SS-93 between the HOLDER and the VIBRA.

46) Remove the VIBRA HOLDER.

47) Carefully release the VIBRA with the SS-93.

48) Remove the VIBRA.

49) Insert the DISPLAY ASSEMBLY to the SS-318 Protective cover bottom end first.

50) Push the SS-317 Battery removal tool in between the BATTERY and the METAL DECO. Slowly push
the SS-317 until the BATTERY is released. Lift up and remove the BATTERY. Do not use it again. Discard
it.

51) The Nokia Lumia 925 disassembly procedure is complete.

-END OF DISASSEMBLY-

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

Service Manual Level 1 and 2

Nokia Lumia 925

RM- 892, RM-893, RM-910
Version 1.0

Assembly steps

1) For assembling you need the Nokia Standard toolkit version 2. You will also need the SS-231 RF
connector disassembly/assembly tool.

2) Remove the BATTERY CONNECTOR SUPPORT protective film.

3) Attach the BATTERY CONNECTOR SUPPORT to the battery connector. Ba careful not to damage the
battery connector.

4) Remove the BATTERY protective film. Place the BATTERY to its cavity and press it to activate the
adhesive.

5) Remove the VIBRA protective film.

6) Align the VIBRA to its place by using the shown screw hole. Press the VIBRA gently to activate the
adhesive. Be careful not to damage the VIBRA.

7) Place the VIBRA HOLDER shown side first.

8) Lock the other side of the VIBRA HOLDER with the SS-93.

9) Remove the BOTTOM FLEX protective film.

10) Align the BOTTOM FLEX by using the two shown holes. Press the BOTTOM FLEX with the SS-93 to
activate the adhesive. Be careful not to damage the small components on the BOTTOM FLEX.

11) Lock the SS-231 tool to the ANTENNA COAX CABLE connector by first placing the tool on the cable
and then sliding it towards the connector.

12) Connect the ANTENNA COAX CABLE connector. Be careful not to damage the connector.

13) Push the ANTENNA COAX CABLE around the shown corner and lock it to the shown three holder clips.

14) Push the MAIN ANTENNA to the SPEAKER BOX. Check that the shown three clips are attached.

15) Place the SPEAKER BOX with the MAIN ANTENNA to the METAL DECO bottom end first. Then press it
to its place.

16) Place the SIDE KEY ASSEMBLY.

17) Fasten the two TORX+ size 4 screws in the order shown to the torque of 8 Ncm.

18) Remove the MICROPHONE protective film.

19) Push the AV CONNECTOR to its place first.

20) Use the SS-93 to push the MICROPHONE and the USB CONNECTOR to their places.

21) Check that the CONNECTOR ASSEMBLY is correctly aligned.

22) Remove the FRONT CAMERA support protective film.

23) Place the FRONT CAMERA support.

24) Place the CAMERA BOOT to the FRONT CAMERA. Note the alignment of the CAMERA BOOT.

25) Place the FRONT CAMERA as shown.

26) Push the CONNECTOR ASSEMBLY connector through the CONNECTOR LATCH. Push the CONNECTOR
LATCH to its place with the SS-93. Be careful not to damage the CONNECTOR ASSEMBLY connector.

27) Place the THERMAL PAD.

28) Remove the CAMERA support protective film. Place the CAMERA support as shown.

29) Gently bend the CAMERA connector flex.

30) Connect the CAMERA connector. Be careful not to damage the connector.

31) Bend the CAMERA connector flex as shown. Be careful not to damage the CAMERA connector flex.

32) Place the WLAN/GPS ANTENNA to the ENGINE BOARD as shown.

33) Place the ENGINE BOARD to the METAL DECO bottom end first. Guide the connectors away with the
SS-93. Be careful not to damage or leave any connectors underneath the ENGINE BOARD.

34) Press the ENGINE BOARD gently until it snaps to its place.

35) Place the MIMO ANTENNA.

36) Fasten the two TORX+ size 4 screws in the order shown to the torque of 8 Ncm.

37) Lock the SS-231 tool to the ANTENNA COAX CABLE connector and connect it. Be careful not the
damage the connector.

38) Make sure that the ANTENNA COAX CABLE stays in its cavity.

39) Connect the FRONT CAMERA connector with the SS-93. When connecting connectors, be careful not
damage them or any components nearby.

40) Connect the CONNECTOR ASSEMBLY connector with the SS-93.

41) Connect the DISPLAY connector with the SS-93.

42) Connect the SIDE KEY ASSEMBLY connector with the SS-93.

43) Connect the BOTTOM FLEX connector with the SS-93.

44) Place the CONNECTOR SUPPORT FRAME.

45) Fasten the three TORX+ size 6 screws in the order shown to the torque of 15 Ncm.

46) Connect the BATTERY connector. Make sure to connect the BATTERY connector last to avoid short
circuit. Be careful not to damage the connector or any components nearby.

47) Remove the camera opening protective film.

48) Place the BACK COVER and press from the shown places to attach the right side of the back cover
first.

49) Attach the bottom end of the BACK COVER by pressing from the shown places.

50) Then attach the left side of the BACK COVER by pressing from the shown places.

51) Attach the top end of the BOTTOM COVER. You might need to push the BACK COVER slighty towards
bottom end of the phone and then press the BACK COVER to its place.

52) Remove the BACK COVER protective film.

53) Push in the SIM TRAY.

54) Remove the DISPLAY protective film.

55) The Nokia Lumia 925 assembly procedure is complete.

-END OF ASSEMBLY-

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

Service Manual Level 1 and 2

Nokia Lumia 925

RM-892, RM-893, RM-910
Version 1.0

TOP

Solder components

WLAN/GPS

ant spring

Display support

GND spring

Vibra

fuse

LB + B7 MIMO

ant spring

X7800

X1361

F2100

???

X7804

BOTTOM

F1351

F1400

F1351

X1362

X2104

X2103

X7805

Camera

fuse

Display support

GND spring

Vibra

+ spring

Vibra

-spring

LB + B7 MIMO

ant trimmin spring

HB MIMO

ant spring

NFC ant

spring

NFC ant

spring

Camera LED

GND spring

X7802

X6500

X6501

X1471

X7823

X1470

F1351

F1351

F1350

X3300

Main antenna

coax connector

Camera LED

+ spring

Display

backlight fuse

UI keys

backlight fuse

WLC

connector

©2013 Nokia | Confidential | All Rights Reserved.

Service Manual Level 1 and 2

V

0

Nokia Lumia 925

RM-892, RM-893, RM-910

ersion 1.

CA-190CD Service cable AC-50 USB charger SIM door key

Service devices

SS-311 Back cover release tool SS-231 RF connector disassembly/assembly tool SS-317 Battery removal tool

SS-318 Protective cover 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 925

RM-892, RM-893, RM-910
Version 1.0

Product controls and interfaces

1

2

5

9

12

10

11

3

4

1 — Micro-SIM holder
2 — Micro-USB connector
3 — Secondary microphone

6
7

4 — 3.5 mm AHJ connector
5 — Earpiece
6 — Ambient light & proximity sensor
7 — Front camera
8 — Touch display
9 — Back key
10 — Start key

8

11 — Search key
12 — Microphone
13 — Dual LED flash
14 — Main camera
15 — Volume keys
16 — Power/Lock key
17 — WLC cover contacts
18 — Camera key
19 — Loudspeaker
20 — MIMO antenna
21 — WLAN/GPS antenna
22 — NFC area
23 — Main antenna

v1.0

14

17

13

15

16

18

19

20

21

22

23

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

Service Manual Level 1 and 2

Nokia Lumia 925

RM-892, RM-893, RM-910
Version 1.0

Flashing concept

Service

software

Service concept

CA-101

Note: Charged
battery is man­datory

Transceiver with

embedded battery

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

Service Manual Level 1 and 2

0

t

Nokia Lumia 925

RM-892, RM-893, RM-910
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. Because the
consumer cannot remove the battery to reset the phone the phone
has a special electronic circuit which cuts the phone power when the
volume down and power keys are pressed for 10-15 seconds.

To perform the hardware reset, press and hold the Volume down and
Power keys at the same time for about 10-15 seconds until a short
vibration is felt. The phone should restart by itself.

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 menu

- 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

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

Service Manual Level 1 and 2

V

0

Nokia Lumia 925

RM-892, RM-893, RM-910

ersion 1.

Version Date Description

1.0 23.05.2013 First published version

Version history

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