Page 1
1. Safety Precautions
1-1. Repair Precaution
● Before attempting any repair or detailed tuning, shield the device from RF noise or static
electricity discharges.
(Use only antistatic glove and strape.)
● Do not touch metallic parts or circuits with your bare hands as device(parts, circuits, etc) may be
corroded.
● Use only demagnetized tools that are specifically designed for small electronic repairs,
as most electronic parts are sensitive to electromagnetic forces.
● Use only high quality screwdrivers when servicing products. Low quality screwdrivers can
easily damage the heads of screws.
● Use only conductor wire of the properly gauge and insulation for low resistance, because of the low
margin of error of most testing equipment.
We recommend 22-gauge twisted copper wire.
● Hand-soldering is not recommended, because printed circuit boards (PCBs) can be easily
damaged, even with relatively low heat. Never use a soldering iron with a power rating of
more than 100 watts and use only lead-free solder with a melting point below 250°C (482°F).
● Prior to disassembling the battery charger for repair, ensure that the AC power is disconnected.
Always use the replacement parts that are registered in the SEC system. Third-party replacement parts
may not function properly.
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
Page 2
1. Safety Precautions
1-2. ESD(Electrostatically Sensitive Devices) Precaution
Many semiconductors and ESDs in electronic devices are particularly sensitive to static discharge and can
be easily damaged by it. We recommend protecting these components with conductive anti-static bags
when you store or transport them.
● Always use an anti-static strap or wristband and remove electrostatic buildup or dissipate
static electricity from your body before repairing ESDs.
● Ensure that soldering irons have AC adapter with ground wires and that the ground wires are properly
connected.
● Use only desoldering tools with plastic tips to prevent static discharge.
● Properly shield the work environment from accidental electrostatic discharge before opening
packages containing ESDs.
● The potential for static electricity discharge may be increased in low humidity environments,
such as air-conditioned rooms. Increase the airflow to the working area to decrease the
chance of accidental static electricity discharges.
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
Page 3
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
2. Specification
2-1. GSM General Specification
Item
GSM 850
EGSM 900
DCS1800
PCS1900
Freq. Band[MHz]
Uplink/Downlink
824~849
869~894
880~915
925~960
1710~1785
1805~1880
1850~1910
1930~1990
ARFCN range
128~251
0~124 & 975~1023
512~885
512~810
Tx/Rx spacing
45MHz
45MHz
95MHz
80MHz
Mod. Bit rate/
Bit Period
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
270.833kbps
3.692us
Time Slot Period/
Frame Period
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
576.9us
4.615ms
Modulation
GSM / EGPRS
GMSK/
8PSK
GMSK/
8PSK
GMSK/
8PSK
GMSK/
8PSK
MS Power
(dBm)
33dBm~5dBm
33dBm~5dBm
30dBm~0dBm
30dBm~0dBm
Power Class
4(GMSK)
E2(8PSK)
4(GMSK)
E2(8PSK)
1(GMSK)
E2(8PSK)
1(GMSK)
E2(8PSK)
Sensitivity (QPSK, BW
10MHz) (dBm)
-102dBm
-102dBm
-100dBm
-100dBm
TDMA Mux
8 8 8
8
Page 4
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
2. Specification
2-2. GSM Tx Power Class
TX Power
control level
GSM850
TX Power
control level
EGSM900
TX Power
control level
DCS1800
TX Power
control level
PCS1900
5
33±2 dBm
5
33±2 dBm
0
30±3 dBm
0
30±3 dBm
6
31±2 dBm
6
31±2 dBm
1
28±3 dBm
1
28±3 dBm
7
29±2 dBm
7
29±2 dBm
2
26±3 dBm
2
26±3 dBm
8
27±2 dBm
8
27±2 dBm
3
24±3 dBm
3
24±3 dBm
9
25±2 dBm
9
25±2 dBm
4
22±3 dBm
4
22±3 dBm
10
23±2 dBm
10
23±2 dBm
5
20±3 dBm
5
20±3 dBm
11
21±2 dBm
11
21±2 dBm
6
18±3 dBm
6
18±3 dBm
12
19±2 dBm
12
19±2 dBm
7
16±3 dBm
7
16±3 dBm
13
17±2 dBm
13
17±2 dBm
8
14±3 dBm
8
14±3 dBm
14
15±2 dBm
14
15±2 dBm
9
12±4 dBm
9
12±4 dBm
15
13±2 dBm
15
13±2 dBm
10
10±4 dBm
10
10±4 dBm
16
11±3 dBm
16
11±3 dBm
11
8±4 dBm
11
8±4 dBm
17
9±3 dBm
17
9±3 dBm
12
6±4 dBm
12
6±4 dBm
18
7±3 dBm
18
7±3 dBm
13
4±4 dBm
13
4±4 dBm
19
5±3 dBm
19
5±3 dBm
14
2±5 dBm
14
2±5 dBm
- - - - 15
0±5 dBm
15
0±5 dBm
Page 5
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
2. Specification
2-3. WCDMA General Specification
Item
WCDMA2100(B1)
WCDMA1900(B2)
WCDMA AWS(B4)
WCDMA850(B5)
WCDMA900(B8)
Freq. Band[MHz]
Uplink/Downlink
1920~1980
2110~2170
1850~1910
1930~1990
1710~1755
2110~2155
824~849
869~894
880~915
925~960
ARFCN range
UL：9612~9888
DL：10562~10838
UL：9262~9538
DL：9662~9938
UL：1312~1513
DL：1537~1738
UL：4132~4233
DL：4357~4458
UL：2712~2868
DL：2937~3088
Tx/Rx spacing
190MHz
80MHz
400MHz
45MHz
45MHz
Mod. Bit rate/
Bit Period
42.2Mbps(DL)
5.42Mbps(UL)
42.2Mbps(DL)
5.42Mbps(UL)
42.2Mbps(DL)
5.42Mbps(UL)
42.2Mbps(DL)
5.42Mbps(UL)
42.2Mbps(DL)
5.42Mbps(UL)
Time Slot Period/
Frame Period
WCDMA
10ms/0.667ms
HSPA
2ms/0.667ms
WCDMA
10ms/0.667ms
HSPA
2ms/0.667ms
WCDMA
10ms/0.667ms
HSPA
2ms/0.667ms
WCDMA
10ms/0.667ms
HSPA
2ms/0.667ms
WCDMA
10ms/0.667ms
HSPA
2ms/0.667ms
Modulation
QPSK
16QAM
64QAM
QPSK
16QAM
64QAM
QPSK
16QAM
64QAM
QPSK
16QAM
64QAM
QPSK
16QAM
64QAM
MS Power
(dBm)
25.7 ~ -49(↓)
25.7 ~ -49(↓)
25.7 ~ -49(↓)
25.7 ~ -49(↓)
25.7 ~ -49(↓)
Power Class
3(max+24dBm)
3(max+24dBm)
3(max+24dBm)
3(max+24dBm)
3(max+24dBm)
Sensitivity (QPSK,
BW 10MHz) (dBm)
-106dBm
-104dBm
-106dBm
-104dBm
-103dBm
Page 6
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
2. Specification
2-4. LTE General Specification
Item
LTE Ban d 1
LTE Ban d 2
LTE Ban d 3
LTE Ban d 4
LTE Ban d 5
Freq. Band[MHz]
Uplink/Downlink
1920~1980
2110~2170
1850~1910
1930~1990
1710~1785
1805~1880
1710~1755
2110~2155
824~849
869~894
ARFCN range
UL:18000~18599
DL:0~599
UL:18600~19199
DL:600~1199
UL:19200~19949
DL:1200~1949
UL:19950~20399
DL:1950~2399
UL:20400~20649
DL:2400~2649
Tx/Rx spacing
(MHz)
190
80
95
400
45
Channel Bandwidth
(MHz)
5/10/15/20
1.4/3/5/10/15/20
1.4/3/5/10/15/20
1.4/3/5/10/15/20
1.4/3/5/10
Modulation
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
MS Power
(dBm)
25.7~-39(↓)
25.7~-39(↓)
25.7~-39(↓)
25.7~-39(↓)
25.7~-39(↓)
Sensitivity (QPSK,
BW 10MHz) (dBm)
-96.3
-94.3
-93.3
-96.3
-94.3
Item
LTE Ban d 7
LTE Ban d 8
LTE Ban d 1 2
LTE Ban d 1 3
[On l y f or A525M ]
LTE Ban d 1 7
Freq. Band[MHz]
Uplink/Downlink
2500~2570
2620~2690
88 0 ~915
92 5 ~960
69 9 ~716
72 9 ~746
777~787
746~756
70 4 ~716
73 4 ~746
ARFCN range
UL:20750~21449
DL:2750~3449
UL:21450-21799
DL:3450-3799
UL:23010~23179
DL:5010~5179
UL:23180~23279
DL:5180~5279
UL:23730~23849
DL:5730~5849
Tx/Rx spacing
(MHz)
120
45
30
-31
30
Channel Bandwidth
(MHz)
5/10/15/20
1. 4 /3/5 / 10
1. 4 /3/5 / 10
1. 4 /3/5 / 10
5/ 1 0
Modulation
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
MS Power
(dBm)
25.7~-39(↓)
25 . 7~-39(↓)
25 . 7 ~-39(↓)
25 . 7~-39(↓)
25 . 7~-39(↓)
Sensitivity (QPSK,
BW 10MHz) (dBm)
-94.3
-9 3 .3
-9 3 .3
-9 3 .3
-9 3 .3
Page 7
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
2. Specification
Item
LTE Ban d 2 0
LTE Ban d 26
LTE Ban d 28
LTE Ban d 32
[On l y f or A525F]
Freq. Band[MHz]
Uplink/Downlink
832~8 62
791~8 21
859~8 94
814~8 49
703~7 48
758~8 03
N/ A
14 5 2~149 6
ARFCN range
UL:24150~24449
DL:6150~6449
UL:26690~27039
DL:8690~9039
UL:27210~27659
DL:9210~9659
N/A
DL:9920~10359
Tx/Rx spacing
(MHz)
-41
-45
55
DL On ly
Channel Bandwidth
(MHz)
5/ 1 0/15 / 20
1. 4 /3/5 / 10/15
3/5/10/1 5/20
5/ 1 0/15/ 2 0
Modulation
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
MS Power (dBm)
25 . 7~-39(↓)
25 . 7~-39(↓)
25 . 7~-39(↓)
25 . 7~-39(↓)
Sensitivity (QPSK, BW
10MHz) (dBm)
-9 3 .3
-9 3 .8
-94. 8
-9 6 .5
Item
LTE Ban d 66
LTE Ban d 3 8
LTE Ban d 4 0
LTE Ban d 4 1
Freq. Band[MHz]
Uplink/Downlink
1710~1780
211 0 ~220 0
25 7 0~262 0
23 0 0~240 0
24 9 6~269 0
ARFCN range
UL:131972~132671
DL:66436~67335
UL/DL:37750 ~ 38249
UL/DL:38650 ~ 39649
UL/DL:39650 ~ 41589
Tx/Rx spacing
(MHz)
400 0 0
0
Channel Bandwidth
(MHz)
1.4/ 3/5/10/15/ 20
5/10 /15/20
5/10 /15/20
5/10 /15/20
Modulation
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
QPSK,16/64QAM
256QAM(DL only)
MS Power (dBm)
25 . 7~-39(↓)
25 . 7~-39(↓)
25 . 7~-39(↓)
PC 2:28.7~- 39(↓)
PC 3:25.7 ~ -39(↓)
Sensitivity (QPSK, BW
10MHz) (dBm)
-95. 8
-96. 3
-96. 3
-94. 3
Page 8
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
3. Product Function
Specification
Item
Description
OS
Android R OS V11.0
SM-A525F
Network
GSM850 / GSM900 / DCS1800 / PCS1900
WCDMA : B1 / B2 / B4 / B5 / B8
LTE
- FDD : B1 / B2 / B3 / B4 / B5 / B7 / B8 / B12 / B17 / B20 / B26 / B28 / B32 / B66
- TDD : B38 / B40 / B41
SM-A525M
Network
GSM850 / GSM900 / DCS1800 / PCS1900
WCDMA : B1 / B2 / B4 /B5 / B8
LTE
- FDD : B1 / B2 / B3 / B4 / B5 / B7 / B8 / B12 / B13 / B17 / B20 / B26 / B28 / B66
- TDD : B38 / B40 / B41
Battery
4,500mAh
Processor
Octa core (2.3GHz, 1.8GHz) Qualcomm / SM7125-1-AB
Connectivity
GPS, Glonass, Galileo, Beidou, BT5.0, USB 2.0, WIFI 802.11 a/b/g/n/ac(2.4G + 5G), NFC
Camera
Rear : 64.0MP+12MP+5M+5MP
Front : 32.0MP
Display
6,5” Super Amoled, 1080 x 2400 (FHD+)
SM-A525F
RAM
4 / 6 / 8 GB
SM-A525M
RAM
6 / 8 GB
ROM
128 / 256 GB
Sensor
Accelerometer, Fingerprint Sensor, Gyro Sensor, Gemagnetic Sensor Hall Sensor, Light Sensor,
Virtual Proximity Sensing
Page 9
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
6. Level 1 Repair
6-1. S/W Update
6-1-1. Preparation
S/W Update program: Fenrir 5.20.xxxx
Mobile Phone
Data Cable
※ Settings
Data Cable : GH39-02002A
Page 10
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
6. Level 1 Repair
6-1-2. How to use ‘Fenrir’ S/W update program.
1) Launch Fenrir by clicking on the icon on the desktop
- SVH (Fenrir_Home) : It uses Home binary which does not have user data area in the memory when
flashed to a device. (Keep user data)
- SVC (Fenrir_Factory) : It uses Factory binary which erases all user data in the memory when flashed to a
device. (Clear user data)
- SVA (Fenrir_All) : It uses Factory and Home binaries. you can download Home and Factory binary in a
PC. (but requires double HDD storage and NW traffic)
2) Input ID & password
※You need to reset the ID information in case of PC change and format and repair, hard disk change.
Page 11
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
6. Level 1 Repair
3) Ensure device has sufficient charge (at least 20%) to start firmware update.
4) Connect the device to PC via data cable.
Page 12
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
6. Level 1 Repair
5) Upon USB connection, you will be presented with below screen.
6) Once device is detected, you will be presented with below screen.
To update S/W, select “S/W Update” or to exit select “SVC Connection”.
If you select “SVC Connection”, only Fenrir connection history (record) will be stored in the FUS server to
support warranty validation. (This is known as “Service Connection” history)
Page 13
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
6. Level 1 Repair
7) Once Fenrir starts, application will display the below screen. And select the Start button & Agree button.
8) The status circle increases as the update installs.
The update process takes approximately 5-10 minutes to complete.
Do not disconnect the device from USB during processing.
Page 14
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
6. Level 1 Repair
9) Once complete, application will present the below screen indicating update complete.
Click Ok and detach device from USB.
Page 15
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
6. Level 1 Repair
6-2. How to use ‘Odin’ program
※ S/W Update via Fenrir is mandatory.
Below is the method to use ‘Odin’ program in any specific case.
6-2-1. Preparation
Installation program: Odin3 v3.14.4.exe or above
Mobile Phone
Data Cable
S/W Binary files (downloaded from GSPN)
※ Settings
Data Cable : GH39-02002A
Page 16
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
6. Level 1 Repair
6-2-2. S/W Installation Program (Downloader program)
Open up the S/W Installation Program by executing the "Odin3 v3.14.4.exe"
Page 17
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
6. Level 1 Repair
1. Enable the check mark by click on the following options
- Check Auto Reboot, F. Reset Time, Nand Erase
- Check BOOTLOADER, PDA, PHONE, CSC and USERDATA Files
* Note : "Odin v3.14.4 or above" checks MD5 checksum just after file selection.
Page 18
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
6. Level 1 Repair
2. Enter into Download Mode
- Enter into Download Mode by pressing 2 button(Volume Up button + Volume Down) simultaneously and
connect USB cable.
- Press volume up button after ‘Warning’ message and ‘Downloading’ message is displayed.
Volume Up
+
Volume Down
USB Cable
Page 19
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
6. Level 1 Repair
3. Connect the device to PC via Data Cable.
Make sure that the one of communication ports [ID:COM] box is highlighted in sky blue.
The device is now connected with the PC and ready to download the binary files in it.
Page 20
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
6. Level 1 Repair
4. Start downloading the binary files into the device by clicking Start button on the screen.
The green colored "PASS!" sign will appear on the upper-left box if the binary files have been successfully
downloaded into the device.
5. Disconnect the device from the Data cable.
6. Once the device boots up, you can check the version of the binary file or name by pressing the following
code in sequence; *#1234#
You can perform Factory data Reset by Settings → General Management → Reset
※ Caution. Never disconnect during the S/W downloading.
6-3. IMEI writing
: Please check with the separate notice file about IMEI Guide.
Page 21
9. Reference Abbreviation
Reference Abbreviation
― AAC: Advanced Audio Coding.
― AVC : Advanced Video Coding.
― BER : Bit Error Rate
― BPSK: Binary Phase Shift Keying
― CA : Conditional Access
― CDM : Code Division Multiplexing
― C/I : Carrier to Interference
― DMB : Digital Multimedia Broadcasting
― EN : European Standard
― ES : Elementary Stream
― ETSI: European Telecommunications Standards Institute
― MPEG: Moving Picture Experts Group
― PN : Pseudo-random Noise
― PS : Pilot Symbol
― QPSK: Quadrature Phase Shift Keying
― RS : Reed-Solomon
― SI : Service Information
― TDM : T ime Division Multiplexing
― TS : Transport Stream
Confidential and proprietary-the contents in this s ervice guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung’s written authorization is strictly prohibited.
Loading...