Samsung SM-N770F Specification
1. Safety Precautions
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1-1. Repair Precaution
Before attempting any repair or detailed tuning, shield the device from RF noise or static
electricity discharges.
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 err or 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.
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1. Safety Precautions
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1-2. ESD(Electrostaticall y 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-stat i c 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.
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2. 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
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
-102dBm
-102dBm
-100dBm
-100dBm
TDMA Mux
8 8 8
8
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2-1. GSM General Specification
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2. Specification
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
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2-2. GSM Tx Power Class
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2. 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
-106dBm
-104dBm
-106dBm
-104dBm
-103dBm
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2-3. WCDMA General Specification
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2. Specification
Item
LTE Band1
LTE Band2
LTE Band3
LTE Band4
Freq. Band[MHz]
Uplink/Downlink
1920~1980
2110~2170
1850~1910
1930~1990
1710~1785
1805~1880
1710~1755
2110~2155
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
Tx/Rx spacing
(MHz)
190
80
95
400
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
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)
-96.3
-94.3
-93.3
-96.3
Item
LTE Band5
LTE Band7
LTE Band8
LTE Band12
Freq. Band[MHz]
Uplink/Downlink
824~849
869~894
2500~2570
2620~2690
880~915
925~960
699~716
729~746
ARFCN range
UL:20400~20649
DL:2400~2649
UL:20750~21449
DL:2750~3449
UL:21450-21799
DL:3450-3799
UL:23010~23179
DL:5010~5179
Tx/Rx spacing
(MHz)
45
120
45
30
Channel Bandwidth
(MHz)
1.4/3/5/10
5/10/15/20
1.4/3/5/10
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)
MS Power (dBm)
25.7~-39(↓)
25.7~-39(↓)
25.7~-39(↓)
25.7~-39(↓)
Sensitivity(QPSK, BW
10MHz)(dBm)
-94.3
-94.3
-93.3
-93.3
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2-4. LTE General Specification
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2. Specification
Item
LTE Band13
LTE Band17
LTE Band20
LTE Band26
Freq. Band[MHz]
Uplink/Downlink
777~787
746~756
704~716
734~746
832~862
791~821
832~862
791~821
ARFCN range
UL:23180~23279
DL:5180~5279
UL:23730~23849
DL:5730~5849
UL:24150~24449
DL:6150~6449
UL:24150~24449
DL:6150~6449
Tx/Rx spacing (MHz)
-31
30
-41
-41
Channel Bandwidth
(MHz)
1.4/3/5/10
5/10
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(↓)
25.7~-39(↓)
Sensitivity(QPSK, BW
10MHz) (dBm)
-93.3
-93.3
-93.3
-93.3
Item
LTE Band28
LTE Band38
LTE Band40
LTE Band41
LTE Band66
Freq. Band[MHz]
Uplink/Downlink
703~748
758~803
2570~2620
2300~2400
2496~2690
1710~1780
2110~2200
ARFCN range
UL:27210~27659
DL:9210~9659
UL/DL:37750 ~
38249
UL/DL:38650 ~
39649
UL/DL:39650 ~
41589
UL:131972~132671
DL:66436~67335
Tx/Rx spacing (MHz)
55 0 0 0 400
Channel Bandwidth
(MHz)
3/5/10/15/20
5/10/15/20
5/10/15/20
5/10/15/20
1.4/3/5/10/15/20
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)
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)
-94.8
-96.3
-96.3
-94.3
-95.8
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3. Product Function
Main Function
Item
OS Android OS V10.0
GSM850 / GSM900 / DCS1800 / PCS1900
RF
Battery
Base Band
Other RF
Camera
LCD
RAM/ROM 사양
(6/8 + 128)
Storage 128 GB
WCDMA: B1/ B2/ B4/ B5/ B8
LTE: B1 / B2 / B3 / B4 / B5 / B7 / B8 / B12 / B13 / B17 / B20 / B26 / B28 / B38 / B40 / B41 /
B66
4,500mAh
Upto 2.7Ghz + 1.7Ghz
GPS, Glonass, Beidou, Galileo / BT5.0 / USB 2.0 / WIFI 802.11 a/b/g/n/ac 2.4G+5GHz /
NFC / MST
Triple Camera : 12M (Wide), 12M (Tele), 12M(Ultra Wide) with LED Flash,
Front : 32MP FF
1080 x 2400 (FHD+), Super AMOLED, 6.7" + OCTA
6 GB LPDDR4X + 128 GB UFS / 8 GB LPDDR4X + 128 GB UFS
Description
Sensor
Accessory
S-PEN Remote control function, drawing and hovering.
Accelerometer, Fingerprint Sensor, Gyro Sensor, Hall Sensor, Grip Sensor, Proximity
Sensor, RGB Light Sensor, Geomagnetic Sensor
Charger : 9V/2.77A DC
Data cable : USB Type-C
Ear jack : 3.5 pi
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6. Level 1 Repair
6-1. S/W Update
6-1-1. Preparation
S/W Update program: Fenrir 5.17.xxxx
Mobile Phone
Data Cable
※ Settings
Data Cable : GH39-02003A
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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.
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