Service Manual for L1 and L2
Nokia Asha 308
(RM-838 / RM-852) Dual-SIM
Nokia Asha 309
(RM-843 / RM-844) Single-SIM
Check the repair
Key features
S40 operating system with Full Touch UI
Dual SIM (Nokia Asha 308) / Wi-Fi (Nokia Asha 309)
Capacitive touch screen
EA Games Gift (40 free games)
Version 1.0
Exploded view Disassembly steps Assembly hints
More More More
policy before
performing any
mechanical repair
on Service Level
1&2!
Service devices Product controls and interfaces Service concept
More More More
Solder components
More
©2012 Nokia | Nokia Internal Use only | All Rights Reserved.
Service Manual Level 1 and 2
Nokia Asha 308
Nokia Asha 309
RM-838, RM-852 / RM-843, RM-844
Version 1.0
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
©2012 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
RM- 838, RM-852, RM-843, RM- 844
Version 1.0
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-
©2012 Nokia | Nokia Internal Use only | All Rights Reserved.
Service Manual Level 1 and 2
Nokia Asha 308
Nokia Asha 309
RM- 838, RM-852 / RM-843, RM- 844
Version 1.0
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.
©2012 Nokia | Nokia Internal Use only | All Rights Reserved.
Service Manual Level 1 and 2
V
s
Nokia Asha 308
Nokia Asha 309
RM-838, RM-852 / RM-843, RM-844
ersion 1.0
CA-101 Service cable AC-16 Travel charger SS-276 Camera removal tool
Service device
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.
©2012 Nokia | Nokia Internal Use only | All Rights Reserved.
Service Manual Level 1 and 2
Nokia Asha 308
Nokia Asha 309
RM-838, RM-852 / RM-843, RM-844
Version 1.0
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
©2012 Nokia | Nokia Internal Use only | All Rights Reserved.
Service Manual Level 1 and 2
Nokia Asha 308
Nokia Asha 309
RM-838, RM-852 / RM-843, RM-844
Version 1.0
Flashing concept
Service
software
Service concept
CA-101
FLS-5
Transceiver
©2012 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
RM-838, RM-852 / RM-843, RM-844
Version 1.0
No Level 1 and 2 soldering work for Nokia Asha 308 and Nokia Asha 309
Solder components
BOTTOM
No Level 1 and 2 soldering work for Nokia Asha 308 and Nokia Asha 309
v1.0
©2012 Nokia | Nokia Internal Use Only | All Rights Reserved.
Service Manual Level 1 and 2
Nokia Asha 308
Nokia Asha 309
RM- 838, RM-852 / RM-843, RM- 844
Version 1.0
Version Date Description
1.0 25.09.2012 First published version
Version history
©2012 Nokia | Nokia Internal Use only | All Rights Reserved.
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