Nokia Asha 308 RM-838, Asha 308 RM-852, Asha 309 RM-843, Asha 309 RM-844, Asha 310 RM-911 Service Manual

Service Manual for L1 and L2

Nokia Asha 308 (RM-838 / RM-852) Dual-SIM

Nokia Asha 309 (RM-843 / RM-844) Single-SIM

Nokia Asha 310 (In China, Nokia Asha 3100)
(RM-911) Dual-SIM Wi-Fi

Key features

S40 operating system with Full Touch UI
Dual SIM (Nokia Asha 308, Nokia Asha 310, Nokia 3100)
Wi-Fi (Nokia Asha 309, Nokia Asha 310, Nokia 3100)
Capacitive touch screen
EA Games Gift (40 free games)

Version 2.0

Check the repair

policy before

performing any

mechanical repair

on Service Level

1&2!

Exploded view Disassembly steps Assembly hints

More More More

Service devices Product controls and interfaces Service concept

More More More

Solder components

More

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

Service Manual Level 1 and 2

Nokia Asha 308, Nokia Asha 309,
Nokia Asha 310, Nokia Asha 3100

RM- 838, RM-852 / RM-843, RM- 844 / RM-911
Version 2.0

Version Date Description

1.0 25.09.2012 First published version

2.0 18.02.2013 Added Nokia Asha 310/3100 (RM-911) Dual- SIM Wi-Fi information,

Updated Solder components page

Version history

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

Service Manual Level 1 and 2

Nokia Asha 308, Nokia Asha 309,
Nokia Asha 310, Nokia Asha 3100

RM-838, RM-852 / RM-843, RM-844 / RM-911
Version 2.0

A-COVER ASSEMBLY

(I0001 - I0003)

1

A-COVER

I0001

EARPIECE

I0003

UI FRAME

I0005

Exploded view

TOUCH PANEL
I0002

DISPLAY
I0004

LIGHT SWAP PWB

D-COVER ASSEMBLY

(I0012 - I0018)

3

I0007

CAMERA

I0011

AV JACK

I0014

DC JACK

I0015

SIM DOOR

I0016

LIGHT SWAP PACKAGE

ANTENNA MODULE ASSEMBLY

(I0006 - I0010)

DOMESHEET
I0006

FEM SHIELDING LID
I0009

BB SHIELDING LID
I0008

(I0012, I0013)

IHF SPEAKER
I0012

ANTENNA MODULE
I0013

D-COVER
I0018

MICRO SD CARD DOOR
I0017

TYPE LABEL
I0010

2

4

SCREW TORX+ SIZE 4

v1.0

M1.4 x 4.5

I0020

B-COVER

I0021

Only available
as assembly

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

SCREW TORX+ SIZE 5
M1.4 X 2.7
I0019

Not reuseable
after removal

Repair/swap
only in level 3

Service Manual Level 1 and 2

Nokia Asha 308, Nokia Asha 309,
Nokia Asha 310, Nokia Asha 3100

RM- 838, RM-852 / RM-843, RM- 844 / RM-911
Version 2.0

Disassembly steps

For disassembling you need the Nokia Standard toolkit version 2. You will also need a DC plug, an AV plug
and the camera removal tool SS-276.

Note that the disassembly instructions are made with the Dual SIM variant (Nokia Asha 308, RM-838 and
RM-852).

Protect the TOUCH WINDOW with protective film.

Use the opening notch to release the BATTERY COVER.

Remove the BATTERY COVER.

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

Unscrew the four Torx+ size 5 screws in the order shown. Do not use them again. Discard them.

To detach the A-COVER, first release the left side of the bottom end of the A-COVER with the SRT-6.

Continue to release the A-COVER with the SRT-6 on the SIM and SD CARD DOOR side. Be careful not to
damage the SIM or SD CARD DOOR while releasing the A-COVER.

Release the right side of the bottom end of the A-COVER with the SRT-6.

Release also the LOCK KEY side with the SRT-6. Be careful not to damage the LOCK or VOLUME KEYS
while releasing the A-COVER.

To remove the A-COVER, first lift up the bottom end and then release the top end.

Remove the A-COVER.

Protect the DISPLAY with protective film.

Protect the inner side of the TOUCH WINDOW with protective film.

Use the dental tool to release the EARPIECE. Remove the EARPIECE with tweezers. Do not use it again.
Discard it. Be careful not to injure yourself with the sharp end of the dental tool.

Disconnect the DISPLAY CONNECTOR with the SS-93. Be careful not to damage the connector or any
components nearby.

Remove the UI FRAME including the DISPLAY.

Detach the DISPLAY from the UI FRAME with the dental tool. Be careful not to damage the DISPLAY or
the UI FRAME.

Separate the DISPLAY and the UI FRAME.

Use the SS-93 to release the clip holding the ENGINE BOARD on the bottom end of the D-COVER.

Use the SS-93 to release the clip holding the ENGINE BOARD near the VOLUME KEY.

Use the SS-93 to release the clip holding the ENGINE BOARD on the left side of the D-COVER.

To detach the ENGINE BOARD first lift up the bottom end and then pull to the direction shown.

Remove the ENGINE BOARD.

Release one corner of the DOMESHEET with the dental tool and then peel it off with fingers. Be careful
not to damage any components nearby. Do not use the DOMESHEET again. Discard it.

Place the camera removal tool SS-276 on top of the CAMERA and hold down the button on top of the
SS-276.

Lift up the SS-276 and remove the CAMERA.

Use an AV plug to lever out the AV JACK. Remove the AV JACK with tweezers.

Use a DC plug to lever out the DC JACK. Remove the DC JACK with tweezers.

Release the clip holding the ANTENNA with the sharp end of the SS-93.

Remove the ANTENNA.

Use the SS-93 to detach the IHF SPEAKER. Remove the IHF SPEAKER tweezers.

The Nokia Asha 308 and 309 disassembly procedure is complete.

-END OF DISASSEMBLY-

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

Service Manual Level 1 and 2

Nokia Asha 308, Nokia Asha 309,
Nokia Asha 310, Nokia Asha 3100

RM- 838, RM-852 / RM-843, RM- 844 / RM-911
Version 2.0

Assembly hints

Tighten the four Torx+ size 5 screws to the torque of 14 Ncm in the order shown.

Tighten the four Torx+ size 4 screws to the torque of 16 Ncm in the order shown.

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

Service Manual Level 1 and 2

Nokia Asha 308, Nokia Asha 309,
Nokia Asha 310, Nokia Asha 3100

RM- 838, RM-852 / RM-843, RM- 844 / RM-911
Version 2.0

CA-101 Service cable AC-16 Travel charger SS- 276 Camera removal tool

Service devices

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 Asha 308, Nokia Asha 309,
Nokia Asha 310, Nokia Asha 3100

RM-838, RM-852 / RM-843, RM-844 / RM-911
Version 2.0

Product controls and interfaces

1

2

3

1 — Charger connector

2 — Micro USB connector

3 — Nokia AV 3.5 mm connector

4

4 — Earpiece

5 — Touch screen

6 — Call key

7 — End/Power key

5

8 — Microphone

9 — Camera lens

10 — Volume keys

11 — Lock key

67

8

12 — SIM card slot (SIM 2)

(Only in dual SIM variant)

13 — Memory card slot

14 — Strap holder

12

11

14

15 — Loudspeaker

9

10

11

15

Ver. 1.0

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

Service Manual Level 1 and 2

Nokia Asha 308, Nokia Asha 309,
Nokia Asha 310, Nokia Asha 3100

RM-838, RM-852 / RM-843, RM-844 / RM-911
Version 2.0

Flashing concept

Service

software

Service concept

CA-101

FLS-5

Transceiver

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

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

Service Manual Level 1 and 2

Nokia Asha 308, Nokia Asha 309,
Nokia Asha 310, Nokia Asha 3100

RM-838, RM-852 / RM-843, RM-844 / RM-911
Version 2.0

Solder components

Grounding

spring

X7451

BOTTOM

BT Antenna

grounding spring

J7403

Charger

fuse

F2200

X7450

Grounding

spring

Antenna

grounding spring

J7401

v2.0

USB
fuse

S1000F3300

Volume key

switch

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

Volume key

switch

C2250

Back-up

capacitor

S1002

Lock key

switch

J7402

Antenna

grounding spring

J7400S1001

Antenna

spring